JP3288422B2 - High zoom lens - Google Patents
High zoom lensInfo
- Publication number
- JP3288422B2 JP3288422B2 JP9435792A JP9435792A JP3288422B2 JP 3288422 B2 JP3288422 B2 JP 3288422B2 JP 9435792 A JP9435792 A JP 9435792A JP 9435792 A JP9435792 A JP 9435792A JP 3288422 B2 JP3288422 B2 JP 3288422B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- group
- focal length
- object side
- wide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、高変倍レンズに関し、
特に、５群構成でリアフォーカス方式の全長の短い、大
口径比、高変倍比の変倍レンズに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-magnification lens,
In particular, the present invention relates to a variable magnification lens having a five-group configuration and a short focal length, a large aperture ratio, and a high zoom ratio, of a rear focus type.
【０００２】[0002]
【従来の技術】最近のビデオカメラの小型軽量化、低コ
スト化の進展は著しく、カムコーダー市場は大幅に活性
化し、一般ユーザーに急速に普及しつつある。ビデオカ
メラは、主に、電気回路基板、アクチュエーター（メ
カ）系、そして、光学系からなっており、従来、特に電
気系を中心に小型・低コスト化が進められてきたが、こ
こ最近になって、撮像光学系の大幅な小型化が急進展し
ている。撮像光学系の小型・低コスト化は、イメージャ
ーの小型化技術、回転対称非球面加工技術、ＴＴＬ自動
合焦技術の進展を効果的に利用した新しいズーム（変
倍）タイプの開発によってなされつつあるのが現状であ
る。その新しいズームレンズの例として、特開昭６２−
１７８９１７号のものがある。この引用例に示された変
倍レンズは、物体側から順に、正の屈折力を有する第１
群、負の屈折力を有する第２群からなる変倍系と、正の
屈折力を有し、常時固定の第３群、変倍時及び被写体距
離変化等による焦点位置調節のために可動の第４群から
なる結像系とから構成されるものであるが、このように
コンペンセーターを兼ねたリアフォーカスや非球面を採
用することにより、構成枚数を１０枚以下に減らせ、そ
れによって余分なスペースを減らすことができるので、
大幅に前玉径を小さくでき、かつ、全長を短くすること
が可能となった。オートフォーカスを高速かつ小電力で
行えるリアフォーカスのメリットと小型・低コスト化の
メリットから、この種のレンズが現在のカムコーダー用
のレンズの主流になりつつある。2. Description of the Related Art In recent years, video cameras have been significantly reduced in size and weight and cost has been remarkably advanced, and the camcorder market has been greatly activated and is rapidly spreading to general users. A video camera mainly includes an electric circuit board, an actuator (mechanical) system, and an optical system. Conventionally, miniaturization and cost reduction have been promoted, particularly in the electric system in recent years. Thus, the size of the imaging optical system has been drastically reduced. The miniaturization and cost reduction of the imaging optical system are being made by the development of a new zoom (magnification) type that effectively utilizes the advancement of the miniaturization technology of the imager, the rotationally symmetric aspherical surface processing technology, and the TTL automatic focusing technology. There is the present situation. As an example of the new zoom lens,
No. 178917. The variable power lens shown in this cited example has, in order from the object side, a first lens having a positive refractive power.
Group, a zooming system consisting of a second group having a negative refractive power, and a third group having a positive refractive power and being fixed at all times, movable for focal position adjustment at the time of zooming and a change in subject distance, etc. The imaging system is composed of the fourth group. By adopting the rear focus and the aspherical surface also functioning as a compensator, the number of components can be reduced to 10 or less, thereby increasing the number of extra components. Space can be reduced,
The diameter of the front lens can be greatly reduced, and the overall length can be reduced. This type of lens is becoming the mainstream lens for camcorders at present because of the advantages of rear focusing that can perform autofocusing at high speed and with low power, and the advantages of downsizing and cost reduction.
【０００３】このような小型軽量化、低コスト化が徹底
追求されてくると、次は、高機能化へと進展して行く。
その１つが、撮影レンズの高変倍化であり、さらには、
映像信号のディジタル処理による電子ズームの導入であ
る。しかし、カムコーダー用レンズの高変倍化は、専ら
望遠側の延長によるものばかりである。これに前記電子
ズームを導入しても、望遠側がさらに延長されるだけで
あり、広角側の延長は、相変わらずフロントコンバージ
ョンレンズの着脱による旧態然とした方法に頼る外はな
い。上記引用例に示された方式の変倍レンズを用いたの
では、変倍レンジを広角側に延長すベく設計した場合、
前玉径が著しく大きくなり、その分不足してしまう前玉
正レンズの縁肉を確保すべく肉厚化すると、それにより
入射瞳が深くなり、さらに前玉径が大きくなるという悪
循環が生じ、その実現が極めて難しい。[0003] When such miniaturization, weight reduction and cost reduction are thoroughly pursued, the next step is to advance to higher functions.
One of them is to increase the zoom ratio of the taking lens.
The introduction of electronic zoom by digital processing of video signals. However, the high zoom ratio of the camcorder lens is exclusively due to the extension on the telephoto side. Even if the electronic zoom is introduced, only the telephoto side is further extended, and the wide-angle side extension still depends on the old-fashioned method by attaching and detaching the front conversion lens. When using the variable power lens of the method shown in the above cited example, if the variable power range is designed to extend to the wide angle side,
When the diameter of the front lens becomes extremely large and the front lens is thickened to secure the rim of the front lens which is insufficient, a vicious circle occurs in which the entrance pupil is deepened and the front lens diameter is further increased, It is extremely difficult to achieve.
【０００４】このような欠点に対し、新たな試みがなさ
れたものとして、特開平３−２１５８１０号のものがあ
る。これは、前記特開昭６２−１７８９１７号のもので
用いられている変倍方式に対し、第３群を物体側に凸状
の軌跡に沿って可動とし、開口絞りもそれにならうよう
に移動するようにすることで、広角化ができることを示
している。しかし、この例のように第３群を物体側に凸
状の軌跡に沿って可動とし、開口絞りもそれにならうよ
うに移動する方式を用いると、第１群から第３群までに
よる変倍時のピント移動を補正するように動く第４群の
移動軌跡は、移動量がかなり大きなものとなり、第４群
の移動を制御するステッピングモーターの容量を大きく
せざるを得ず、コストアップにつながると同時に、電力
消費も多くなりやすい。この引用例の実施例のものの変
倍比は８程度であるが、さらに高変倍比化すると、第４
群の移動軌跡はさらに急速に移動量の多いカーブになっ
てしまい、実用化が難しくなる。Japanese Patent Laid-Open Publication No. 3-215810 discloses a new attempt to solve such a drawback. This is different from the zooming method used in Japanese Patent Application Laid-Open No. Sho 62-178917, in that the third lens unit is movable along a locus convex toward the object side, and the aperture stop is moved accordingly. In this case, it is possible to increase the angle of view. However, if the third lens group is movable along the locus convex toward the object side and the aperture stop is moved to follow the third lens group as in this example, zooming by the first lens group to the third lens group is performed. The movement trajectory of the fourth group, which moves so as to correct the focus movement at the time, has a considerably large moving amount, and the capacity of the stepping motor for controlling the movement of the fourth group must be increased, leading to an increase in cost. At the same time, power consumption tends to increase. The zoom ratio of the example of this cited example is about 8, but when the zoom ratio is further increased, the fourth zoom ratio is obtained.
The trajectory of the group becomes a curve with a large amount of movement more rapidly, which makes practical use difficult.
【０００５】[0005]
【発明が解決しようとする課題】本発明はこのような状
況に鑑みてなされたものであり、その目的は、上記従来
例（特開昭６２−１７８９１７号、特開平３−２１５８
１０号等）の長所を活かしつつ、変倍レンジを広角側へ
延長しても、前玉径がさほど大きくならず、全長も短
く、結像特性も良好で、焦点補正用の第４群の移動量が
少なくてすむ高変倍レンズを提供することである。SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has as its object the purpose of the prior art (Japanese Patent Application Laid-Open No. 62-178917, Japanese Patent Application Laid-Open No. Hei 3-2158).
No. 10, etc.), even if the zoom range is extended to the wide angle side, the front lens diameter is not so large, the overall length is short, the imaging characteristics are good, and the fourth group for focus correction is used. An object of the present invention is to provide a high-magnification lens requiring a small amount of movement.
【０００６】具体的には、例えば、広角端画角６３°、
変倍比１２、全長１５．５ｆW （ｆW ：広角端における
全系の焦点距離）、Ｆナンバー１．８、構成枚数１２枚
程度の大口径比、高変倍比、広画角の小型の変倍レンズ
を提供することである。Specifically, for example, a wide-angle end angle of view of 63 °,
Zoom ratio 12, total length 15.5f W (f W: focal length of the entire system at the wide angle end), F-number 1.8, configuration number 12 Like about large aperture ratio, compact high zoom ratio, a wide angle of view To provide a variable power lens.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成する本発
明の高変倍レンズは、物体側から順に、正の屈折力を有
する第１群、負の屈折力を有し、変倍時可動の第２群、
正の屈折力を有し、広角端から望遠端へ変倍する際、物
体側に凸状の軌跡に沿って可動の第３群、正の屈折力を
有し、変倍時及び物点位置の変化によるピント移動を補
正するように移動可能な第４群、負の屈折力を有し、常
時固定の第５群から構成されると共に、前記第２群の最
も像側の面と前記第４群の最も物体側の面の間に開口絞
りを有し、かつ、前記開口絞りが、広角端から望遠端へ
変倍する際に物体側に凸状の軌跡に沿って移動し、前記
第５群の横倍率をβ5 とすると、常時以下の条件を満足
することを特徴とするものである。 （１）１．０＜β5 ＜２．０A high-magnification lens according to the present invention, which achieves the above object, comprises, in order from the object side, a first lens unit having a positive refractive power, a negative lens unit having a negative refractive power, and movable during zooming. The second group of
A third lens group having a positive refractive power and movable along a locus convex toward the object side when zooming from the wide-angle end to the telephoto end. The fourth group, which is movable to correct the focus movement due to the change of the second group, has a fifth group which has a negative refractive power and is always fixed, and has the most image-side surface of the second group and the fifth group. An aperture stop between surfaces of the fourth group closest to the object side, and the aperture stop moves along a locus convex toward the object side when zooming from a wide-angle end to a telephoto end; Assuming that the lateral magnification of the fifth lens group is β 5 , the following condition is always satisfied. (1) 1.0 <β 5 <2.0
【０００８】[0008]
【作用】以下、本発明において上記構成をとる理由と作
用について説明する。本発明の小型な高変倍レンズは、
前記の目的を達成するために、物体側から順に、正の屈
折力を有する第１群、負の屈折力を有し、変倍時可動で
ある第２群、正の屈折力を有し、広角端から望遠端へ変
倍する際、物体側に凸状の軌跡に沿って可動である第３
群、正の屈折力を有し、変倍時及び物点位置の変化によ
るピント移動を補正するように移動可能な第４群、負の
屈折力を有し、常時固定である第５群から構成されると
共に、前記第２群の最も像側の面と前記第４群の最も物
体側の面の間に開口絞りを有するもので、高変倍レンズ
の広角端をより広角側に設定した場合、広角端の画面周
辺部の光線が従来例の第１群又は第２群にてケラレやす
くなり、それぞれの群の径を大きくしなくてはならな
い。それを防止するには、入射瞳位置が極力浅くなるよ
うなレンズ構成としなくてはならない。しかし、高変倍
レンズの場合、変倍のために移動する第２群の移動スペ
ースが多く必要であり、入射瞳位置が必然的に深くな
り、さらに、変倍比を高めるとよりその傾向は強まる。
この移動スペースを小さくするには、第２群のパワーを
強めればよいが、その分第１群のパワーもある程度強め
なくてはならいないで、その効果も薄くなるし、また、
望遠端付近での結像性能が悪化する。The reason and the operation of the above configuration in the present invention will be described below. The compact high zoom lens of the present invention
In order to achieve the above object, in order from the object side, a first group having a positive refractive power, a second group having a negative refractive power, and being movable at the time of zooming, having a positive refractive power, When zooming from the wide-angle end to the telephoto end, the third movable lens moves along a locus convex toward the object side.
From the fourth group, which has a positive refractive power and is movable to correct the focus movement at the time of zooming and the change of the object point position, from the fifth group, which has a negative refractive power and is always fixed In addition, the wide-angle end of the high-magnification lens is set to be more wide-angle side, with an aperture stop between the most image side surface of the second group and the most object side surface of the fourth group. In this case, light rays at the peripheral portion of the screen at the wide-angle end are easily vignetted in the first or second group of the conventional example, and the diameter of each group must be increased. To prevent this, the lens configuration must be such that the entrance pupil position is as shallow as possible. However, in the case of a high-magnification lens, a large moving space is required for the second group to move for zooming, and the position of the entrance pupil is inevitably deeper. Strengthen.
In order to reduce the moving space, the power of the second lens group should be increased. However, the power of the first lens group must be increased to some extent, and the effect is reduced.
The imaging performance near the telephoto end deteriorates.
【０００９】そこで、第２群のパワーを強めずに、特に
光線のケラレが発生しやすい広角端から少し望遠側へシ
フトした付近の焦点距離において、入射瞳位置を浅くす
るように、広角端から望遠端へ変倍する際に、開口絞り
を物体側に凸状の軌跡に沿って移動するようにしてい
る。Therefore, without increasing the power of the second lens unit, especially at a focal length slightly shifted to the telephoto side from the wide-angle end where the vignetting of light rays is likely to occur, the entrance pupil position is made shallow from the wide-angle end so as to be shallow. When the magnification is changed to the telephoto end, the aperture stop is moved along a locus convex toward the object side.
【００１０】しかし、単に開口絞りを移動するだけであ
ると、変倍に際して絞りより後ろのレンズ系への光線高
の変化が大きくなり、収差変動が発生しやすいので、第
３群も、開口絞りの移動軌跡同様、物体側に凸状の軌跡
に沿って移動する方式を採用している。However, if the aperture stop is simply moved, the change in the ray height to the lens system behind the stop during zooming becomes large, and aberrations are likely to fluctuate. As in the case of the movement trajectory, a method of moving along a trajectory convex toward the object side is adopted.
【００１１】本発明では、変倍のために発生する焦点位
置の移動や、物点位置の移動のために発生する焦点位置
の移動を第４群を用いて補正するが、この方式では、あ
る一定の物点に対し、変倍による焦点位置の変動を補正
する場合の移動軌跡（トラッキングカーブ）が変倍比が
大きくなるにつれて急速に急峻となり、そのアクチュエ
ーターへの負担が大きくなる傾向にあり、また、移動ス
ペースを多く要し、コンパクト化の障害となり、しか
も、前記のごとく第３群を物体側へ凸状の軌跡に沿って
移動させると、その傾向はさらに強まる。そこで、第４
群の像側に負の屈折力を有する第５群を加えることによ
り、その傾向を大幅に緩和させることができ、第４群ア
クチュエーターへの負担が軽減されると同時に、移動ス
ペースを小さくすることができ、全長の短縮化も容易と
なる。なお、前記第５群は以下の条件を満たさなくては
ならない。According to the present invention, the movement of the focal position caused by the magnification change and the movement of the focal position caused by the movement of the object point position are corrected by using the fourth lens unit. The movement trajectory (tracking curve) when correcting the change of the focal position due to zooming for a certain object point becomes steep rapidly as the zooming ratio increases, and the load on the actuator tends to increase. In addition, a large moving space is required, which hinders compactness. In addition, when the third lens unit is moved along the convex trajectory toward the object side as described above, the tendency is further strengthened. Therefore, the fourth
By adding the fifth group having negative refractive power to the image side of the group, the tendency can be greatly reduced, and the load on the fourth group actuator is reduced, and the moving space is reduced. And it is easy to shorten the overall length. Note that the fifth group must satisfy the following conditions.
【００１２】（１）１．０＜β5 ＜２．０ この条件は、第５群の倍率を規定したもので、その下限
を越えると、第５群を加えた効果が収差補正のみとな
り、第４群の移動軌跡は急峻で、その移動スペースは大
きく、好ましくない。また、その上限を越えると、第４
群の移動量は少なくなるが、第４群の駆動精度が厳しく
なりすぎ、実用的でない。(1) 1.0 <β 5 <2.0 This condition stipulates the magnification of the fifth lens unit. If the lower limit of the condition is exceeded, the effect of the fifth lens unit is only aberration correction. The moving trajectory of the fourth group is steep, and its moving space is large, which is not preferable. If the upper limit is exceeded, the fourth
Although the amount of movement of the group is small, the driving accuracy of the fourth group is too severe and is not practical.
【００１３】なお、本発明のように、後ろの群に負のパ
ワーを持たせると、射出瞳位置が浅くなるが、最近のマ
イクロレンズ付きの撮像デバイスを用いた時、それが問
題となることがある。そこで、撮像面の直前に正レンズ
を加えるとよい。こうすると、トータルパワーをほとん
ど変えることなく、射出瞳位置を深くできる。また、負
になりがちなペッツバール和を小さくすることも容易と
なる。この正レンズは要求精度が低くてすむので、安価
なプラスチックレンズで構成するのがよい。When the rear group is given a negative power as in the present invention, the exit pupil position becomes shallower. However, when a recent imaging device with a microlens is used, this becomes a problem. There is. Therefore, it is preferable to add a positive lens immediately before the imaging surface. By doing so, the exit pupil position can be deepened without substantially changing the total power. Further, it becomes easy to reduce the Petzval sum that tends to be negative. Since the required accuracy of the positive lens is low, it is preferable to use an inexpensive plastic lens.
【００１４】以上、開口絞りと正の屈折力を有する第３
群を、変倍に際し、物体側に凸状の軌跡に沿って移動す
るようにすることで、従来例に比べ、広画角をカバーし
つつも、高いズーム比を得ることができ、これにより移
動軌跡が急峻となった第４群の動きを緩和するために、
条件（１）を満足する負の屈折力を有する第５群を導入
し、場合によっては、撮像面の直前に正レンズを加える
ことによって、全長が短く、トラッキングの制御性もよ
く、マイクロレンズ付撮像デバイスを用いても問題のな
い射出瞳位置が確保できる高変倍レンズを得ることがで
きる。As described above, the aperture stop and the third lens having a positive refractive power
By moving the group along a locus convex toward the object side during zooming, a high zoom ratio can be obtained while covering a wide angle of view, compared to the conventional example. To mitigate the movement of the fourth group, whose moving trajectory has become steep,
A fifth lens unit having a negative refractive power that satisfies the condition (1) is introduced, and in some cases, by adding a positive lens immediately before the imaging surface, the total length is short, tracking controllability is good, and a micro lens is provided. It is possible to obtain a high-magnification lens capable of securing an exit pupil position that does not cause any problem even if an imaging device is used.
【００１５】さらに、良好な収差性能を維持しつつ、前
玉径のコンパクト化を図るために、以下の条件（２）を
満足するように構成することが望ましい。 （２）０．２５＜ｆIII ／ｆI ＜１．３ ただし、ｆI は第１群、ｆIII は第３群の焦点距離であ
る。Furthermore, in order to keep the diameter of the front lens compact while maintaining good aberration performance, it is desirable to configure the zoom lens so as to satisfy the following condition (2). (2) 0.25 <f III / f I <1.3 where f I is the focal length of the first lens unit and f III is the focal length of the third lens unit.
【００１６】上記条件（２）は、第１群と第３群の焦点
距離の比を規定したものである。この条件の下限を越え
ると、第４群、第５群の合成の焦点距離が短くなるた
め、開口絞りを通過する軸外光束の角度が大きくなりや
すく、前玉径が大きくなってしまい、好ましくない。ま
た、この条件の上限を越えると、コンパクト化と収差補
正の両立が難しくなり、好ましくない。The condition (2) defines the ratio between the focal lengths of the first and third lens units. If the lower limit of this condition is exceeded, the combined focal length of the fourth and fifth units will be short, so that the angle of the off-axis light beam passing through the aperture stop will tend to be large, and the diameter of the front lens will be large. Absent. If the upper limit of the condition is exceeded, it is difficult to achieve both compactness and aberration correction.
【００１７】また、本発明は、開口絞りよりも物体側に
は必ず正の屈折力を有する第１群と負の屈折力を有する
第２群とが存在するため、この第１群と第２群それぞれ
の屈折力を強くしすぎると、入射瞳位置が深くなりやす
く、そのため前玉径が大きくなってしまう。したがっ
て、上記条件（２）の代わりに、以下の条件（３）を満
足するようにすることによっても前玉径のコンパクト化
が図れる。 （３）０．２５＜ｆS ／ｆI ＜０．９ ただし、広角端での全系の焦点距離をｆW 、望遠端での
焦点距離をｆT とする時、ｆS ＝（ｆW ・ｆT ）1/2 で
ある。Further, according to the present invention, the first lens unit having the positive refractive power and the second lens unit having the negative refractive power always exist on the object side of the aperture stop. If the refracting power of each group is too strong, the entrance pupil position is likely to be deep, and the diameter of the front lens becomes large. Therefore, the diameter of the front lens can be reduced by satisfying the following condition (3) instead of the above condition (2). (3) 0.25 <f S / f I <0.9 where f S = (f W , where f W is the focal length of the entire system at the wide-angle end and f T is the focal length at the telephoto end. · f T) is 1/2.
【００１８】上記条件（３）の上限を越えると、変倍比
を大きくするためには有利であるが、前玉径が大きくな
りやすいため、好ましくない。また、上記条件（３）の
下限を越えると、高変倍比を得るのが難しく、好ましく
ない。Exceeding the upper limit of condition (3) is advantageous for increasing the zoom ratio, but is not preferred because the diameter of the front lens tends to increase. If the lower limit of the condition (3) is exceeded, it is difficult to obtain a high zoom ratio, which is not preferable.
【００１９】また、上記条件（３）は、第１群の焦点距
離を規定することによって前玉径のコンパクト化を図っ
ているが、第１群の代わりに、第２群の焦点距離を以下
の条件（４）を満足するように規定することによって
も、同様の効果を奏することができる。 （４）１．２＜ｆS ／｜ｆII｜＜４．０ ただし、ｆIIは第２群の焦点距離である。In the above condition (3), the front lens diameter is made compact by defining the focal length of the first lens unit. However, instead of the first lens unit, the focal length of the second lens unit is set as follows. The same effect can be obtained by defining so as to satisfy the condition (4). (4) 1.2 <f S / | f II | <4.0 where f II is the focal length of the second lens unit.
【００２０】上記条件（４）の上限を越えると、変倍比
を大きくするためには有利であるが、前玉径が大きくな
りやすいため、好ましくない。また、上記条件（４）の
下限を越えると、高変倍比を得るのが難しく、好ましく
ない。Exceeding the upper limit of condition (4) is advantageous for increasing the zoom ratio, but is not preferred because the front lens diameter tends to be large. If the lower limit of the condition (4) is exceeded, it is difficult to obtain a high zoom ratio, which is not preferable.
【００２１】なお、上記条件（２）〜（４）は、それぞ
れ単独でも上記効果を有するものであるが、これらの条
件の複数を同時に満足することによって、各群に加わる
負荷が減少するため、収差性能の向上が比較的容易に行
え、設計の自由度も向上する。The above conditions (2) to (4) have the above-mentioned effects even when used alone. However, by simultaneously satisfying a plurality of these conditions, the load applied to each group is reduced. The aberration performance can be relatively easily improved, and the degree of freedom in design can be improved.
【００２２】また、上記条件（２）〜（４）の規定は、
何れも前玉径の縮小に着目してなされたものであるが、
フォーカシングによる収差変動を抑えるためには、上記
条件（２）〜（４）の代わりに、以下の条件（５）を満
足するようにすることが望ましい。 （５）ｆS ／｜ｆI-III ｜＜０．７ ただし、ｆI-III は全系の焦点距離がｆS 時の第１群か
ら第３群までの合成の焦点距離である。The conditions (2) to (4) are defined as follows:
Both were made with a focus on the reduction of the front lens diameter,
In order to suppress aberration fluctuation due to focusing, it is desirable to satisfy the following condition (5) instead of the above conditions (2) to (4). (5) f S / | f I-III | <0.7 where f I-III is the combined focal length of the first to third groups when the focal length of the entire system is f S.
【００２３】上記条件（５）の上限を越えると、焦点調
節時の収差変動が大きくなりすぎ、特に球面収差が悪化
しやすく、好ましくない。When the value exceeds the upper limit of the condition (5), the fluctuation of aberration at the time of focus adjustment becomes too large, and particularly, the spherical aberration tends to deteriorate, which is not preferable.
【００２４】さらに、上記条件（５）を上記条件（２）
〜（４）の少なくとも１つの条件と共に満足させれば、
前玉径の縮小と共にフォーカシングによる収差変動を小
さく抑え、収差性能の良好な光学系が得られる。Further, the above condition (5) is changed to the above condition (2)
If satisfied with at least one condition of (4),
Along with the reduction of the front lens diameter, variation in aberration due to focusing is suppressed, and an optical system having good aberration performance is obtained.
【００２５】なお、各群の構成としては、物体側から順
に、第１群は、物体側に凸面を向けた負メニスカスレン
ズ、正レンズ、正レンズ、第２群は、像側に強い凹面を
向けた負レンズ、両凹レンズ、正レンズ、第３群は、非
球面を含む正レンズ、第４群は、両凸レンズと負メニス
カスレンズの接合、あるいは、分離されたダブレット、
第５群は、曲率の強い面同士を向かい合わせた正レンズ
と負レンズ、そして、必要に応じ、撮像面の直前に正レ
ンズを１枚加えた形とするのがよい。その場合、以下の
条件を満足するように構成するのが望ましい。 （６）０．２５＜ｎ6 −ｎ5 ＜０．４ （７）０．１５＜ｎ4 −ｎ5 ＜０．４ ただし、ｎ4 、ｎ5 、ｎ6 はそれぞれ第２群の負レン
ズ、両凹レンズ、正レンズの屈折率である。The first group has a negative meniscus lens having a convex surface facing the object side, the positive lens, the positive lens, and the second group has a strong concave surface on the image side. The third group is a positive lens including an aspheric surface, the fourth group is a cemented biconvex lens and a negative meniscus lens, or a separated doublet,
The fifth group may be formed by adding a positive lens and a negative lens having surfaces with strong curvatures facing each other, and, if necessary, one positive lens immediately before the imaging surface. In that case, it is desirable to configure so as to satisfy the following conditions. (6) 0.25 <n 6 -n 5 <0.4 (7) 0.15 <n 4 -n 5 <0.4 However, n 4, n 5, n 6 is the negative lens of the second group, respectively , The refractive index of the biconcave lens and the positive lens.
【００２６】条件（６）は、第２群の両凹レンズと正レ
ンズの屈折率差を規定したものである。変倍比が大きく
なるに従い、第２群の移動による収差変動を十分小さく
抑える必要がある。この２つのレンズによる空気レンズ
もしくは接合面が、そのための重要な役割を果している
が、逆に、高次収差も発生させる要因ともなっている。
したがって、両レンズの屈折率差を十分に大きくとるこ
とによって、前記空気レンズもしくは接合面の曲率半径
を大きくし、高次収差の発生を緩和することができる。
この条件（６）の下限を越えると、変倍時の高次収差の
変動が大きくなりやすい。一方、その上限を越えると、
現実の硝材では構成し難い問題がある。条件（７）は、
前記両凹レンズが必然的に低屈折率となり、弱まる第２
群の負のパワーを補う意味で、第２群の像面に強い凹面
を向けた負レンズの屈折率を十分に高くとることを意味
する条件である。この条件の下限を越えると、第２群の
負のパワーが不足し、十分な変倍比の確保がし難くなる
か、又は、ペッツバール和が負の大きな値になりやす
い。その上限を越えると、現実の硝材では構成し難い。Condition (6) defines the refractive index difference between the biconcave lens of the second group and the positive lens. As the zoom ratio increases, it is necessary to suppress aberration fluctuation due to movement of the second lens unit to a sufficiently small value. The air lens or the cemented surface formed by these two lenses plays an important role for that, but on the contrary, it also causes high-order aberrations.
Therefore, by making the difference between the refractive indices of both lenses sufficiently large, the radius of curvature of the air lens or the cemented surface can be increased, and the occurrence of higher-order aberrations can be reduced.
If the lower limit of the condition (6) is exceeded, the fluctuation of higher-order aberrations during zooming tends to increase. On the other hand, once that limit is exceeded,
There is a problem that is difficult to configure with actual glass materials. Condition (7) is:
The biconcave lens necessarily has a low refractive index,
In order to compensate for the negative power of the group, the condition means that the refractive index of the negative lens having a strong concave surface facing the image plane of the second group should be sufficiently high. If the lower limit of this condition is exceeded, the negative power of the second lens unit will be insufficient, and it will be difficult to ensure a sufficient zoom ratio, or the Petzval sum will tend to be a large negative value. If the upper limit is exceeded, it is difficult to construct with an actual glass material.
【００２７】[0027]
【実施例】次に、本発明の高変倍レンズの実施例１〜１
１について説明する。各実施例のレンズデータは後に示
すが、実施例１〜１１の広角端におけるレンズ断面をそ
れぞれ図１〜図１１に示す。各図中、各群の移動軌跡を
示す実線は、無限遠撮影時における広角端から望遠端ま
でのズーム時の移動軌跡を示しており、点線の軌跡は、
物体距離１ｍの近接撮影時における広角端から望遠端ま
でのズーム時の第４群Ｇ４の移動軌跡を示している。ま
た、本発明の高変倍レンズは、第４群Ｇ４の移動によっ
て物点位置変化によるピント移動の補正を行っている
が、各図の実線から点線へ向かうフォーカシングによっ
てこのピント移動の補正を行っている。Next, Examples 1 to 1 of the high-magnification lens of the present invention will be described.
1 will be described. Although lens data of each example will be described later, FIGS. 1 to 11 show lens cross sections of Examples 1 to 11 at the wide-angle end, respectively. In each figure, the solid line indicating the movement locus of each group indicates the movement locus during zooming from the wide-angle end to the telephoto end during infinity shooting, and the dotted line locus indicates
The movement locus of the fourth unit G4 during zooming from the wide-angle end to the telephoto end during close-up shooting at an object distance of 1 m is shown. The high-magnification lens of the present invention corrects the focus movement due to the change of the object point position by the movement of the fourth group G4, but corrects this focus movement by focusing from the solid line to the dotted line in each figure. ing.
【００２８】まず、各実施例の各群の構成について説明
する。第１群Ｇ１と第２群Ｇ２の構成は何れの実施例の
同様であり、第１群Ｇ１は、物体側に凸面を向けた負メ
ニスカスレンズと物体側に凸面を向けた正メニスカスレ
ンズとの接合レンズと、物体側に凸面を向けた正メニス
カスレンズの計３枚からなり、第２群Ｇ２は、物体側に
凸面を向けた負メニスカスレンズと、両凹レンズと物体
側に凸面を向けた正メニスカスレンズとの接合レンズの
計３枚からなる。First, the configuration of each group in each embodiment will be described. The configurations of the first group G1 and the second group G2 are the same as those of any of the embodiments. The first group G1 includes a negative meniscus lens having a convex surface facing the object side and a positive meniscus lens having a convex surface facing the object side. The second group G2 includes a cemented lens, and a positive meniscus lens having a convex surface facing the object side. It consists of a total of three cemented lenses with a meniscus lens.
【００２９】第３群Ｇ３から第５群の構成については、
実施例１の場合、第３群Ｇ３は、開口絞りを前側に一体
に有し、両凸レンズ１枚からなり、第４群Ｇ４は、物体
側に凸面を向けた負メニスカスレンズと両凸レンズの接
合レンズの計２枚からなり、第５群Ｇ５は、物体側に凸
面を向けた負メニスカスレンズと、物体側に凸面を向け
た正メニスカスレンズの計２枚からなる。したがって、
この実施例は全体で１１枚のレンズからなる。なお、無
限遠撮影時には、第３群Ｇ３と第４群Ｇ４は一体に同じ
軌跡に沿って移動する。非球面は、第３群Ｇ３の両凸レ
ンズの前面、第４群Ｇ４の最終面、及び、第５群Ｇ５の
正メニスカスレンズの前面の計３面に用いている。Regarding the configuration of the third group G3 to the fifth group,
In the case of the first embodiment, the third unit G3 includes an aperture stop integrally on the front side and includes one biconvex lens, and the fourth unit G4 includes a cemented negative meniscus lens having a convex surface facing the object side and a biconvex lens. The fifth group G5 includes a total of two lenses: a negative meniscus lens having a convex surface facing the object side, and a positive meniscus lens having a convex surface facing the object side. Therefore,
This embodiment consists of 11 lenses in total. During infinity shooting, the third group G3 and the fourth group G4 move together along the same locus. The aspherical surface is used for a total of three surfaces: the front surface of the biconvex lens of the third group G3, the last surface of the fourth group G4, and the front surface of the positive meniscus lens of the fifth group G5.
【００３０】実施例２においては、第３群Ｇ３は、開口
絞りを前側に一体に有し、両凸レンズ１枚からなり、第
４群Ｇ４は、物体側に凸面を向けた負メニスカスレンズ
と両凸レンズの接合レンズの計２枚からなり、第５群Ｇ
５は、物体側に凸面を向けた負メニスカスレンズと、物
体側に凸面を向けた正メニスカスレンズと、撮像面の直
前に配置された両凸レンズの計３枚からなる。したがっ
て、この実施例は全体で１２枚のレンズからなる。な
お、無限遠撮影時には、第３群Ｇ３と第４群Ｇ４は一体
に同じ軌跡に沿って移動する。非球面は、第３群Ｇ３の
両凸レンズの前面、第４群Ｇ４の最終面、及び、第５群
Ｇ５の正メニスカスレンズの前面、両凸レンズの前面の
計４面に用いている。In the second embodiment, the third unit G3 has an aperture stop integrally on the front side and includes one biconvex lens. The fourth unit G4 includes a negative meniscus lens having a convex surface facing the object side. The fifth group G consists of a total of two cemented lenses of convex lenses.
Reference numeral 5 includes a negative meniscus lens having a convex surface facing the object side, a positive meniscus lens having a convex surface facing the object side, and a biconvex lens disposed immediately before the imaging surface. Therefore, this embodiment consists of 12 lenses in total. During infinity shooting, the third group G3 and the fourth group G4 move together along the same locus. The aspherical surfaces are used on the front surface of the biconvex lens of the third group G3, the last surface of the fourth group G4, the front surface of the positive meniscus lens of the fifth group G5, and the front surface of the biconvex lens.
【００３１】実施例３においては、第３群Ｇ３は、開口
絞りを前側に一体に有し、両凸レンズ１枚からなり、第
４群Ｇ４は、物体側に凸面を向けた負メニスカスレンズ
と両凸レンズの接合レンズの計２枚からなり、第５群Ｇ
５は、物体側に凸面を向けた負メニスカスレンズと、物
体側に凸面を向けた正メニスカスレンズと、撮像面の直
前に配置された物体側に凸面を向けた正メニスカスレン
ズの計３枚からなる。したがって、この実施例は全体で
１２枚のレンズからなる。非球面は、第３群Ｇ３の両凸
レンズの前面、第４群Ｇ４の最終面、及び、第５群Ｇ５
の両正メニスカスレンズの前面の計４面に用いている。In the third embodiment, the third unit G3 has an aperture stop integrally on the front side and includes one biconvex lens. The fourth unit G4 includes a negative meniscus lens having a convex surface facing the object side. The fifth group G consists of a total of two cemented lenses of convex lenses.
5 is a negative meniscus lens having a convex surface facing the object side, a positive meniscus lens having a convex surface facing the object side, and a positive meniscus lens having a convex surface facing the object side disposed immediately before the imaging surface. Become. Therefore, this embodiment consists of 12 lenses in total. The aspheric surface includes the front surface of the biconvex lens of the third group G3, the last surface of the fourth group G4, and the fifth group G5.
Are used on a total of four front surfaces of both positive meniscus lenses.
【００３２】実施例４においては、第３群Ｇ３は、開口
絞りを前側に一体に有し、両凸レンズ１枚からなり、第
４群Ｇ４は、物体側に凸面を向けた負メニスカスレンズ
と両凸レンズの接合レンズの計２枚からなり、第５群Ｇ
５は、物体側に凸面を向けた負メニスカスレンズと、物
体側に凸面を向けた正メニスカスレンズと、撮像面の直
前に配置された物体側に凸面を向けた正メニスカスレン
ズの計３枚からなる。したがって、この実施例は全体で
１２枚のレンズからなる。非球面は、第２群Ｇ２の最終
面、第３群Ｇ３の両凸レンズの前面、第４群Ｇ４の最終
面、及び、第５群Ｇ５の両正メニスカスレンズの前面の
計５面に用いている。In the fourth embodiment, the third unit G3 has an aperture stop integrally on the front side and includes one biconvex lens. The fourth unit G4 includes a negative meniscus lens having a convex surface facing the object side and a biconvex lens. The fifth group G consists of a total of two cemented lenses of convex lenses.
5 is a negative meniscus lens having a convex surface facing the object side, a positive meniscus lens having a convex surface facing the object side, and a positive meniscus lens having a convex surface facing the object side disposed immediately before the imaging surface. Become. Therefore, this embodiment consists of 12 lenses in total. The aspherical surface is used for a total of five surfaces including the last surface of the second group G2, the front surface of the biconvex lens of the third group G3, the last surface of the fourth group G4, and the front surface of both positive meniscus lenses of the fifth group G5. I have.
【００３３】実施例５においては、第３群Ｇ３は、開口
絞りを前側に一体に有し、両凸レンズ１枚からなり、第
４群Ｇ４は、両凸レンズと像側に凸面を向けた負メニス
カスレンズの接合レンズの計２枚からなり、第５群Ｇ５
は、物体側に凸面を向けた負メニスカスレンズと、物体
側に凸面を向けた正メニスカスレンズと、撮像面の直前
に配置された物体側に凸面を向けた正メニスカスレンズ
の計３枚からなる。したがって、この実施例は全体で１
２枚のレンズからなる。非球面は、第２群Ｇ２の最終
面、第３群Ｇ３の両凸レンズの前面、第４群Ｇ４の第１
面、及び、第５群Ｇ５の両正メニスカスレンズの前面の
計５面に用いている。In the fifth embodiment, the third unit G3 has an aperture stop integrally on the front side and includes one biconvex lens, and the fourth unit G4 includes a biconvex lens and a negative meniscus having a convex surface facing the image side. The fifth group G5 consists of a total of two cemented lenses.
Is composed of a negative meniscus lens having a convex surface facing the object side, a positive meniscus lens having a convex surface facing the object side, and a positive meniscus lens having a convex surface facing the object side disposed immediately before the imaging surface. . Therefore, this embodiment has a total of 1
It consists of two lenses. The aspheric surface is the last surface of the second group G2, the front surface of the biconvex lens of the third group G3, and the first surface of the fourth group G4.
Surface and a total of five surfaces of the front surfaces of both positive meniscus lenses of the fifth group G5.
【００３４】実施例６においては、第３群Ｇ３は、開口
絞りを前側に一体に有し、両凸レンズ１枚からなり、第
４群Ｇ４は、物体側に凸面を向けた負メニスカスレンズ
と両凸レンズの接合レンズの計２枚からなり、第５群Ｇ
５は、物体側に凸面を向けた負メニスカスレンズと、撮
像面の直前に配置された物体側に凸面を向けた正メニス
カスレンズの計２枚からなる。したがって、この実施例
は全体で１１枚のレンズからなる。非球面は、第２群Ｇ
２の最終面、第３群Ｇ３の両凸レンズの前面、第４群Ｇ
４の最終面、及び、第５群Ｇ５の負メニスカスレンズの
後面、正メニスカスレンズの前面の計５面に用いてい
る。In the sixth embodiment, the third unit G3 includes an aperture stop integrally on the front side and includes one biconvex lens. The fourth unit G4 includes a negative meniscus lens having a convex surface facing the object side. The fifth group G consists of a total of two cemented lenses of convex lenses.
Reference numeral 5 includes a negative meniscus lens having a convex surface facing the object side and a positive meniscus lens having a convex surface facing the object side disposed immediately before the imaging surface. Therefore, this embodiment consists of 11 lenses in total. The aspheric surface is the second group G
2, the last surface of the second group, the front surface of the biconvex lens of the third group G3, the fourth group G
The final lens surface of No. 4, the rear surface of the negative meniscus lens of the fifth group G5, and the front surface of the positive meniscus lens are used in total for five surfaces.
【００３５】実施例７においては、第３群Ｇ３は、開口
絞りを前側に一体に有し、両凸レンズと、物体側に凸面
を向けた負メニスカスレンズの２枚からなり、第４群Ｇ
４は、両凸レンズと像側に凸面を向けた負メニスカスレ
ンズの接合レンズの計２枚からなり、第５群Ｇ５は、物
体側に凸面を向けた負メニスカスレンズと、撮像面の直
前に配置された物体側に凸面を向けた正メニスカスレン
ズの計２枚からなる。したがって、この実施例は全体で
１２枚のレンズからなる。非球面は、第２群Ｇ２の最終
面、第３群Ｇ３の両凸レンズの前面、第４群Ｇ４の第１
面、及び、第５群Ｇ５の負メニスカスレンズの後面、正
メニスカスレンズの前面の計５面に用いている。In the seventh embodiment, the third unit G3 includes two lenses: a biconvex lens and a negative meniscus lens having a convex surface facing the object side.
Reference numeral 4 denotes a cemented lens composed of a biconvex lens and a negative meniscus lens having a convex surface facing the image side. The fifth unit G5 includes a negative meniscus lens having a convex surface facing the object side and a lens disposed immediately before the imaging surface. And a positive meniscus lens having a convex surface facing the object side. Therefore, this embodiment consists of 12 lenses in total. The aspheric surface is the last surface of the second group G2, the front surface of the biconvex lens of the third group G3, and the first surface of the fourth group G4.
Surface, the rear surface of the negative meniscus lens of the fifth group G5, and the front surface of the positive meniscus lens, for a total of five surfaces.
【００３６】実施例８においては、第３群Ｇ３は、開口
絞りを前側に一体に有し、両凸レンズと、両凸レンズ
と、物体側に凸面を向けた負メニスカスレンズの３枚か
らなり、第４群Ｇ４は、両凸レンズ１枚からなり、第５
群Ｇ５は、物体側に凸面を向けた負メニスカスレンズ
と、撮像面の直前に配置された物体側に凸面を向けた正
メニスカスレンズの計２枚からなる。したがって、この
実施例は全体で１２枚のレンズからなる。非球面は、第
２群Ｇ２の最終面、第３群Ｇ３の第１の両凸レンズの前
面、第４群Ｇ４の両凸レンズの前面、及び、第５群Ｇ５
の負メニスカスレンズの後面、正メニスカスレンズの前
面の計５面に用いている。In the eighth embodiment, the third unit G3 includes an aperture stop integrally on the front side, and includes a biconvex lens, a biconvex lens, and a negative meniscus lens having a convex surface facing the object side. The fourth unit G4 includes one biconvex lens.
The group G5 includes a negative meniscus lens having a convex surface facing the object side and a positive meniscus lens having a convex surface facing the object side disposed immediately before the imaging surface. Therefore, this embodiment consists of 12 lenses in total. The aspheric surface includes a final surface of the second group G2, a front surface of the first biconvex lens of the third group G3, a front surface of the biconvex lens of the fourth group G4, and a fifth group G5.
Are used on the rear surface of the negative meniscus lens and the front surface of the positive meniscus lens.
【００３７】実施例９においては、開口絞りは第３群Ｇ
３の前側に配置されているが、図示のように、変倍時に
第２群Ｇ２、第３群Ｇ３と異なる軌跡に沿って移動す
る。第３群Ｇ３は、両凸レンズ１枚からなり、第４群Ｇ
４は、物体側に凸面を向けた負メニスカスレンズと両凸
レンズの接合レンズの計２枚からなり、第５群Ｇ５は、
物体側に凸面を向けた負メニスカスレンズと、撮像面の
直前に配置された物体側に凸面を向けた正メニスカスレ
ンズの計２枚からなる。したがって、この実施例は全体
で１１枚のレンズからなる。非球面は、第２群Ｇ２の最
終面、第３群Ｇ３の両凸レンズの前面、第４群Ｇ４の最
終面、及び、第５群Ｇ５の負メニスカスレンズの後面、
正メニスカスレンズの前面の計５面に用いている。In the ninth embodiment, the aperture stop is the third group G
Although it is arranged on the front side of the zoom lens 3, it moves along a locus different from that of the second group G2 and the third group G3 at the time of zooming as shown in the figure. The third unit G3 includes one biconvex lens, and the fourth unit G3.
The fourth lens unit G5 includes two lenses, a negative meniscus lens having a convex surface facing the object side and a cemented lens of a biconvex lens.
It consists of a negative meniscus lens having a convex surface facing the object side and a positive meniscus lens having a convex surface facing the object side disposed immediately before the imaging surface. Therefore, this embodiment consists of 11 lenses in total. The aspheric surface includes the last surface of the second group G2, the front surface of the biconvex lens of the third group G3, the last surface of the fourth group G4, and the rear surface of the negative meniscus lens of the fifth group G5.
It is used for a total of five front surfaces of the positive meniscus lens.
【００３８】実施例１０においては、第３群Ｇ３は、両
凸レンズ、一体に配置された開口絞り、物体側に凸面を
向けた正メニスカスレンズ、両凹レンズの計３枚からな
り、第４群Ｇ４は、両凸レンズ１枚からなり、第５群Ｇ
５は、物体側に凸面を向けた負メニスカスレンズと、撮
像面の直前に配置された物体側に凸面を向けた正メニス
カスレンズの計２枚からなる。したがって、この実施例
は全体で１２枚のレンズからなる。非球面は、第２群Ｇ
２の最終面、第３群Ｇ３の両凸レンズの前面、第４群Ｇ
４の両凸レンズの前面、及び、第５群Ｇ５の負メニスカ
スレンズの後面、正メニスカスレンズの前面の計５面に
用いている。In the tenth embodiment, the third unit G3 comprises a biconvex lens, an integrally arranged aperture stop, a positive meniscus lens having a convex surface facing the object side, and a biconcave lens. Consists of one biconvex lens, and the fifth group G
Reference numeral 5 includes a negative meniscus lens having a convex surface facing the object side and a positive meniscus lens having a convex surface facing the object side disposed immediately before the imaging surface. Therefore, this embodiment consists of 12 lenses in total. The aspheric surface is the second group G
2, the last surface of the second group, the front surface of the biconvex lens of the third group G3, the fourth group G
4 are used on the front surface of the biconvex lens, the rear surface of the negative meniscus lens of the fifth group G5, and the front surface of the positive meniscus lens.
【００３９】実施例１１においては、第３群Ｇ３は、両
凸レンズと、その後側に一体に配置された開口絞りから
なり、第４群Ｇ４は、物体側に凸面を向けた負メニスカ
スレンズと両凸レンズの接合レンズの計２枚からなり、
第５群Ｇ５は、物体側に凸面を向けた負メニスカスレン
ズと、物体側に凸面を向けた正メニスカスレンズと、撮
像面の直前に配置された物体側に凸面を向けた正メニス
カスレンズの計３枚からなる。したがって、この実施例
は全体で１２枚のレンズからなる。非球面は、第２群Ｇ
２の最終面、第３群Ｇ３の両凸レンズの前面、第４群Ｇ
４の最終面、及び、第５群Ｇ５の両正メニスカスレンズ
の前面の計５面に用いている。In the eleventh embodiment, the third unit G3 comprises a biconvex lens and an aperture stop integrally disposed on the rear side. The fourth unit G4 comprises a negative meniscus lens having a convex surface facing the object side. It consists of a total of two cemented lenses of convex lenses,
The fifth group G5 includes a negative meniscus lens having a convex surface facing the object side, a positive meniscus lens having a convex surface facing the object side, and a positive meniscus lens having a convex surface facing the object side disposed immediately before the imaging surface. Consists of three pieces. Therefore, this embodiment consists of 12 lenses in total. The aspheric surface is the second group G
2, the last surface of the second group, the front surface of the biconvex lens of the third group G3, the fourth group G
4 and a total of five front surfaces of both positive meniscus lenses of the fifth group G5.
【００４０】各実施例の第５群Ｇ５の前後、及び、その
中に配置された平行平面板は、フィルター等の光学部材
を示す。The plane-parallel plates disposed before and after the fifth lens unit G5 in each embodiment, and disposed therein, represent optical members such as filters.
【００４１】なお、以下において、記号は、上記の外、
ｆは全系の焦点距離、ＦNOはＦナンバー、ωは半画角、
ｒ1 、ｒ2 …は各レンズ面の曲率半径、ｄ1 、ｄ2 …は
各レンズ面間の間隔、ｎd1、ｎd2…は各レンズのｄ線の
屈折率、νd1、νd2…は各レンズのアッベ数であり、ま
た、非球面形状は、光軸方向をｘ、光軸に直交する方向
をｙとした時、次の式で表される。 ｘ=(ｙ2/ｒ）／［1+｛1-Ｐ( ｙ2/ｒ2)｝1/2 ］ ＋A4ｙ4 ＋A6ｙ6 ＋A8ｙ8 ＋ A10ｙ10 ただし、ｒは近軸曲率半径、Ｐは円錐係数、A4、A6、
A8、A10 は非球面係数である。In the following, the symbols are the same as above,
f is the focal length of the entire system, F NO is the F number, ω is the half angle of view,
r 1, r 2 ... is the radius of curvature, d 1, d 2 ... the spacing between the lens surfaces, n d1, n d2 ... d-line refractive index of each lens of the lens surfaces, ν d1, ν d2 ... Is the Abbe number of each lens, and the aspherical shape is represented by the following equation, where x is the optical axis direction and y is the direction orthogonal to the optical axis. x = (y 2 / r) / [1+ {1-P (y 2 / r 2)} 1/2] + A 4 y 4 + A 6 y 6 + A 8 y 8 + A 10 y 10 where, r is near The radius of curvature of the shaft, P is the conic coefficient, A 4 , A 6 ,
A 8 and A 10 are aspherical coefficients.
【００４２】実施例１ ｆ ＝ 5.15 〜 17.58 〜 60.00 ＦNO＝ 1.85 〜 2.06 〜 2.01 ω ＝ 31.5 °〜 10.2 ° 3.0 ° ｒ1 = 41.2268 ｄ1 = 1.1000 ｎd1 =1.84666 νd1 =23.78 ｒ2 = 25.4265 ｄ2 = 6.0000 ｎd2 =1.56873 νd2 =63.16 ｒ3 = 166.2931 ｄ3 = 0.1500 ｒ4 = 32.0995 ｄ4 = 3.4000 ｎd3 =1.66672 νd3 =48.32 ｒ5 = 143.3074 ｄ5 = （可変） ｒ6 = 132.6620 ｄ6 = 0.9000 ｎd4 =1.85026 νd4 =32.28 ｒ7 = 7.5882 ｄ7 = 3.8000 ｒ8 = -32.2691 ｄ8 = 0.8000 ｎd5 =1.48749 νd5 =70.20 ｒ9 = 9.0937 ｄ9 = 3.0000 ｎd6 =1.84666 νd6 =23.78 ｒ10= 32.7182 ｄ10= （可変） ｒ11= ∞（絞り） ｄ11= 1.5000 ｒ12= 11.7702（非球面） ｄ12= 2.7000 ｎd7 =1.58913 νd7 =61.18 ｒ13= -139.5648 ｄ13= 3.3000 ｒ14= 10.5081 ｄ14= 0.8000 ｎd8 =1.84666 νd8 =23.78 ｒ15= 6.5810 ｄ15= 4.0000 ｎd9 =1.58913 νd9 =61.18 ｒ16= -17.1548（非球面） ｄ16= （可変） ｒ17= 166.1652 ｄ17= 0.8000 ｎd10=1.80610 νd10=40.95 ｒ18= 7.7713 ｄ18= 0.4000 ｒ19= 14.8726（非球面） ｄ19= 2.0000 ｎd11=1.58913 νd11=61.18 ｒ20= 43.8112 ｄ20= 1.0000 ｒ21= ∞ ｄ21= 6.3000 ｎd12=1.54771 νd12=62.83 ｒ22= ∞ ｄ22= 1.2100 ｒ23= ∞ ｄ23= 0.6000 ｎd13=1.48749 νd13=70.20 ｒ24= ∞ 非球面係数 第１２面 Ｐ = 1 A4 =-0.84987×10-4 A6 =-0.20058×10-5 A8 = 0.14067×10-6 A10=-0.30366×10-8 第１６面 Ｐ = 1 A4 = 0.42220×10-3 A6 =-0.13230×10-5 A8 =-0.52250×10-7 A10=-0.54602×10-8 第１９面 Ｐ = 1 A4 =-0.45934×10-4 A6 = 0.20354×10-4 A8 =-0.50297×10-6 A10=-0.12090×10-6 β5 ＝1.616 ｆIII ／ｆI ＝0.409 ｆS ／ｆI ＝0.388 ｆS ／｜ｆII｜＝1.922 ｆS ／ｆI-III ＝0.459 ｎ6 −ｎ5 ＝0.359 ｎ4 −ｎ5 ＝0.363
。[0042] Example 1 f = 5.15 ~ 17.58 ~ 60.00 F NO = 1.85 ~ 2.06 ~ 2.01 ω = 31.5 ° ~ 10.2 ° 3.0 ° r 1 = 41.2268 d 1 = 1.1000 n d1 = 1.84666 ν d1 = 23.78 r 2 = 25.4265 d 2 = 6.0000 n d2 = 1.56873 ν d2 = 63.16 r 3 = 166.2931 d 3 = 0.1500 r 4 = 32.0995 d 4 = 3.4000 n d3 = 1.66672 ν d3 = 48.32 r 5 = 143.3074 d 5 = ( variable) r 6 = 132.6620 d 6 = 0.9000 n d4 = 1.85026 ν d4 = 32.28 r 7 = 7.5882 d 7 = 3.8000 r 8 = -32.2691 d 8 = 0.8000 n d5 = 1.48749 ν d5 = 70.20 r 9 = 9.0937 d 9 = 3.0000 n d6 = 1.84666 ν d6 = 23.78 r 10 = 32.7182 d 10 = ( variable) r 11 = ∞ (stop) d 11 = 1.5000 r 12 = 11.7702 ( aspherical) d 12 = 2.7000 n d7 = 1.58913 ν d7 = 61.18 r 13 = -139.5648 d 13 = 3.3000 r 14 = 10.5081 d 14 = 0.8000 n d8 = 1.84666 ν d8 = 23.78 r 15 = 6.5810 d 15 = 4.0000 n d9 = 1.58913 ν d9 = 61.18 r 16 = -17.1548 ( aspherical) d 16 = (variable) r 17 = 166.1652 d 17 = 0.8000 n d10 = 1.80610 ν d10 = 40.95 r 18 = 7.7713 d 18 = 0.4000 r 19 = 14.8726 (aspherical surface) d 19 = 2.0000 n d11 = 1.58913 ν d11 = 61.18 r 20 = 43.8112 d 20 = 1.0000 r 21 = ｄ d 21 = 6.3000 n d12 = 1.54771 ν d12 = 62.83 r 22 = ∞ d 22 = 1.2100 r 23 = ∞ d 23 = 0.6000 n d13 = 1.48749 ν d13 = 70.20 r 24 = ∞ Aspheric surface twelfth surface P = 1 A 4 = -0.84987 × 10 -4 A 6 = -0.20058 × 10 -5 A 8 = 0.14067 × 10 -6 A 10 = -0.30366 × 10 -8 Sixteenth surface P = 1 A 4 = 0.42220 × 10 -3 A 6 = -0.13230 × 10 -5 A 8 = -0.52 250 × 10 -7 A 10 = -0.54602 × 10 -8 Surface 19 P = 1 A 4 = -0.45934 × 10 -4 A 6 = 0.20354 × 10 -4 A 8 = -0.50297 × 10 -6 A 10 = -0.12090 × 10 -6 β 5 = 1.616 f III / f I = 0.409 f S / f I = 0.388 f S / | f II | = 1.922 f S / f I -III = 0.459 n 6 -n 5 = 0.359 n 4 -n 5 = 0.363
.
【００４３】実施例２ ｆ ＝ 5.15 〜 17.58 〜 60.00 ＦNO＝ 1.85 〜 2.09 〜 2.04 ω ＝ 31.5 °〜 10.2 ° 3.0 ° ｒ1 = 41.5179 ｄ1 = 1.1000 ｎd1 =1.84666 νd1 =23.78 ｒ2 = 25.2499 ｄ2 = 6.0000 ｎd2 =1.56873 νd2 =63.16 ｒ3 = 165.9358 ｄ3 = 0.1500 ｒ4 = 32.6393 ｄ4 = 3.4000 ｎd3 =1.66672 νd3 =48.32 ｒ5 = 168.1081 ｄ5 = （可変） ｒ6 = 173.3201 ｄ6 = 0.9000 ｎd4 =1.83400 νd4 =37.16 ｒ7 = 7.8302 ｄ7 = 3.8000 ｒ8 = -29.8723 ｄ8 = 0.8000 ｎd5 =1.48749 νd5 =70.20 ｒ9 = 9.3391 ｄ9 = 3.0000 ｎd6 =1.84666 νd6 =23.78 ｒ10= 31.2051 ｄ10= （可変） ｒ11= ∞（絞り） ｄ11= 1.5000 ｒ12= 12.8162（非球面） ｄ12= 2.4000 ｎd7 =1.58913 νd7 =61.18 ｒ13= -416.9902 ｄ13= 3.3000 ｒ14= 10.6561 ｄ14= 0.8000 ｎd8 =1.84666 νd8 =23.78 ｒ15= 6.6821 ｄ15= 4.2000 ｎd9 =1.58913 νd9 =61.18 ｒ16= -16.9807（非球面） ｄ16= （可変） ｒ17= 197.8083 ｄ17= 0.8000 ｎd10=1.80610 νd10=40.95 ｒ18= 7.9701 ｄ18= 0.4000 ｒ19= 13.8850（非球面） ｄ19= 1.8000 ｎd11=1.58913 νd11=61.18 ｒ20= 53.8060 ｄ20= 1.0000 ｒ21= ∞ ｄ21= 6.3000 ｎd12=1.54771 νd12=62.83 ｒ22= ∞ ｄ22= 0.4000 ｒ23= 30.9673（非球面） ｄ23= 1.9000 ｎd13=1.49241 νd13=57.66 ｒ24= -33.5176 ｄ24= 1.2100 ｒ25= ∞ ｄ25= 0.6000 ｎd14=1.48749 νd14=70.20 ｒ26= ∞ 非球面係数 第１２面 Ｐ = 1 A4 =-0.67246×10-4 A6 =-0.22699×10-5 A8 = 0.15482×10-6 A10=-0.31594×10-8 第１６面 Ｐ = 1 A4 = 0.33631×10-3 A6 =-0.17566×10-5 A8 = 0.15173×10-7 A10=-0.27686×10-8 第１９面 Ｐ = 1 A4 =-0.58468×10-4 A6 = 0.18208×10-4 A8 =-0.19845×10-5 A10= 0.82199×10-7 第２３面 Ｐ =16.7315 A4 = 0.94606×10-4 A6 = 0.12180×10-4 A8 =-0.96495×10-6 A10= 0 β5 ＝1.543 fIII ／ｆI ＝0.468 ｆS ／ｆI ＝0.389 ｆS ／｜ｆII｜＝1.944 ｆS ／ｆI-III ＝0.325 ｎ6 −ｎ5 ＝0.359 ｎ4 −ｎ5 ＝0.347
。[0043] Example 2 f = 5.15 ~ 17.58 ~ 60.00 F NO = 1.85 ~ 2.09 ~ 2.04 ω = 31.5 ° ~ 10.2 ° 3.0 ° r 1 = 41.5179 d 1 = 1.1000 n d1 = 1.84666 ν d1 = 23.78 r 2 = 25.2499 d 2 = 6.0000 n d2 = 1.56873 ν d2 = 63.16 r 3 = 165.9358 d 3 = 0.1500 r 4 = 32.6393 d 4 = 3.4000 n d3 = 1.66672 ν d3 = 48.32 r 5 = 168.1081 d 5 = ( variable) r 6 = 173.3201 d 6 = 0.9000 n d4 = 1.83400 ν d4 = 37.16 r 7 = 7.8302 d 7 = 3.8000 r 8 = -29.8723 d 8 = 0.8000 n d5 = 1.48749 ν d5 = 70.20 r 9 = 9.3391 d 9 = 3.0000 n d6 = 1.84666 ν d6 = 23.78 r 10 = 31.2051 d 10 = ( variable) r 11 = ∞ (stop) d 11 = 1.5000 r 12 = 12.8162 ( aspherical) d 12 = 2.4000 n d7 = 1.58913 ν d7 = 61.18 r 13 = -416.9902 d 13 = 3.3000 r 14 = 10.6561 d 14 = 0.8000 n d8 = 1.84666 ν d8 = 23.78 r 15 = 6.6821 d 15 = 4.2000 nd 9 = 1.58913 ν d9 = 61.18 r 16 = -16.9807 (aspheric) d 16 = (variable) r 17 = 197.8083 d 17 = 0.8000 n d10 = 1.80610 ν d10 = 40.95 r 18 = 7.9701 d 18 = 0.4000 r 19 = 13.8850 (aspherical surface) d 19 = 1.8000 n d11 = 1.58913 ν d11 = 61.18 r 20 = 53.8060 d 20 = 1.0000 r 21 = ｄ d 21 = 6.3000 n d12 = 1.54771 ν d12 = 62.83 r 22 = ∞ d 22 = 0.4000 r 23 = 30.9673 ( aspherical) d 23 = 1.9000 n d13 = 1.49241 ν d13 = 57.66 r 24 = -33.5176 d 24 = 1.2100 r 25 = ∞ d 25 = 0.6000 n d14 = 1.48749 ν d14 = 70.20 r 26 = ∞ Aspheric surface twelfth surface P = 1 A 4 = -0.67246 × 10 -4 A 6 = -0.22699 × 10 -5 A 8 = 0.15482 × 10 -6 A 10 = -0.31594 × 10 -8 Sixteenth surface P = 1 A 4 = 0.33631 × 10 -3 A 6 = -0.17566 × 10 -5 A 8 = 0.15173 × 10 -7 A 10 = -0.27686 × 10 -8 Surface 19 P = 1 A 4 = -0.58468 × 10 -4 A 6 = 0.18208 × 10 -4 A 8 = -0.19845 × 10 -5 A 10 = 0.82199 × 10 -7 Surface 23 P = 16.7315 A 4 = 0.94606 × 10 -4 A 6 = 0.12180 × 10 -4 A 8 =- 0.96495 × 10 -6 A 10 = 0 β 5 = 1.543 f III / f I = 0.468 f S / f I = 0.389 f S / | f II | = 1.944 f S / f I-III = 0.325 n 6 -n 5 = 0.359 n 4 -n 5 = 0.347
.
【００４４】実施例３ ｆ ＝ 5.15 〜 17.58 〜 60.00 ＦNO＝ 1.86 〜 2.18 〜 2.15 ω ＝ 31.5 °〜 10.2 ° 3.0 ° ｒ1 = 48.6449 ｄ1 = 1.1000 ｎd1 =1.84666 νd1 =23.78 ｒ2 = 26.5764 ｄ2 = 5.1000 ｎd2 =1.56873 νd2 =63.16 ｒ3 = 1433.1905 ｄ3 = 0.1500 ｒ4 = 27.5358 ｄ4 = 3.7000 ｎd3 =1.66672 νd3 =48.32 ｒ5 = 109.7352 ｄ5 = （可変） ｒ6 = 110.4877 ｄ6 = 0.9000 ｎd4 =1.83400 νd4 =37.16 ｒ7 = 6.9198 ｄ7 = 3.5000 ｒ8 = -14.1237 ｄ8 = 0.8000 ｎd5 =1.48749 νd5 =70.20 ｒ9 = 9.3009 ｄ9 = 2.6000 ｎd6 =1.84666 νd6 =23.78 ｒ10= 40.7111 ｄ10= （可変） ｒ11= ∞（絞り） ｄ11= 1.5000 ｒ12= 23.6424（非球面） ｄ12= 2.1000 ｎd7 =1.58913 νd7 =61.18 ｒ13= -65.2226 ｄ13= （可変） ｒ14= 11.2463 ｄ14= 0.8000 ｎd8 =1.84666 νd8 =23.78 ｒ15= 7.3097 ｄ15= 4.5000 ｎd9 =1.58913 νd9 =61.18 ｒ16= -19.8581（非球面） ｄ16= （可変） ｒ17= 31.1671 ｄ17= 0.8000 ｎd10=1.83400 νd10=37.16 ｒ18= 8.3648 ｄ18= 1.0000 ｒ19= 10.0709（非球面） ｄ19= 2.1000 ｎd11=1.58913 νd11=61.18 ｒ20= 36.7454 ｄ20= 2.2357 ｒ21= ∞ ｄ21= 6.3000 ｎd12=1.54771 νd12=62.83 ｒ22= ∞ ｄ22= 0.4000 ｒ23= 24.5145（非球面） ｄ23= 1.7000 ｎd13=1.49241 νd13=57.66 ｒ24= 99.4003 ｄ24= 1.2100 ｒ25= ∞ ｄ25= 0.6000 ｎd14=1.48749 νd14=70.20 ｒ26= ∞ 非球面係数 第１２面 Ｐ = 1 A4 =-0.81707×10-4 A6 = 0.25973×10-5 A8 =-0.87485×10-7 A10= 0.10448×10-8 第１６面 Ｐ = 1A4 = 0.57528×10-4 A6 = 0.86689×10-5 A8 =-0.43159×10-6 A10= 0.71730×10-8 第１９面 Ｐ = 1 A4 =-0.11655×10-3 A6 = 0.10038×10-4 A8 =-0.44848×10-6 A10= 0.14924×10-7 第２３面 Ｐ = 1 A4 = 0.14779×10-3 A6 =-0.48255×10-4 A8 = 0.32113×10-5 A10=-0.13812×10-6 β5 ＝1.271 ｆIII ／ｆI ＝0.731 ｆS ／ｆI ＝0.432 ｆS ／｜ｆII｜＝2.413 ｆS ／ｆI-III ＝-0.0557 ｎ6 −ｎ5 ＝0.359 ｎ4 −ｎ5 ＝0.347
。[0044] Example 3 f = 5.15 ~ 17.58 ~ 60.00 F NO = 1.86 ~ 2.18 ~ 2.15 ω = 31.5 ° ~ 10.2 ° 3.0 ° r 1 = 48.6449 d 1 = 1.1000 n d1 = 1.84666 ν d1 = 23.78 r 2 = 26.5764 d 2 = 5.1000 n d2 = 1.56873 ν d2 = 63.16 r 3 = 1433.1905 d 3 = 0.1500 r 4 = 27.5358 d 4 = 3.7000 n d3 = 1.66672 ν d3 = 48.32 r 5 = 109.7352 d 5 = ( variable) r 6 = 110.4877 d 6 = 0.9000 n d4 = 1.83400 ν d4 = 37.16 r 7 = 6.9198 d 7 = 3.5000 r 8 = -14.1237 d 8 = 0.8000 n d5 = 1.48749 ν d5 = 70.20 r 9 = 9.3009 d 9 = 2.6000 n d6 = 1.84666 ν d6 = 23.78 r 10 = 40.7111 d 10 = ( variable) r 11 = ∞ (stop) d 11 = 1.5000 r 12 = 23.6424 ( aspherical) d 12 = 2.1000 n d7 = 1.58913 ν d7 = 61.18 r 13 = -65.2226 d 13 = (variable) r 14 = 11.2463 d 14 = 0.8000 n d8 = 1.84666 ν d8 = 23.78 r 15 = 7.3097 d 15 = 4.5000 n d9 = 1.58913 ν d9 = 61.18 r 16 = -19.8581 ( aspherical) d 16 = ( Variable) r 17 = 31.1671 d 17 = 0.8000 n d10 = 1.83400 ν d10 = 37.16 r 18 = 8.3648 d 18 = 1.0000 r 19 = 10.0709 ( aspherical) d 19 = 2.1000 n d11 = 1.58913 ν d11 = 61.18 r 20 = 36.7454 d 20 = 2.2357 r 21 = ∞ d 21 = 6.3000 n d12 = 1.54771 ν d12 = 62.83 r 22 = ∞ d 22 = 0.4000 r 23 = 24.5145 ( aspherical) d 23 = 1.7000 n d13 = 1.49241 ν d13 = 57.66 r 24 = 99.4003 d 24 = 1.2100 r 25 = ∞ d 25 = 0.6000 n d14 = 1.48749 ν d14 = 70.20 r 26 = ∞ Aspherical surface twelfth surface P = 1 A 4 = -0.81707 × 10 -4 A 6 = 0.25973 × 10 -5 A 8 = -0.87485 × 10 -7 A 10 = 0.10448 × 10 -8 Sixteenth surface P = 1A 4 = 0.57528 × 10 -4 A 6 = 0.86689 × 10 -5 A 8 = -0.43159 × 10 -6 A 10 = 0.71730 × 10 -8 Surface 19 P = 1 A 4 = -0.11655 × 10 -3 A 6 = 0.10038 × 10 -4 A 8 = -0.44848 × 10 -6 A 10 = 0.14924 × 10 -7 Surface 23 P = 1 A 4 = 0.14779 × 10 -3 A 6 = -0.48255 × 10 -4 A 8 = 0.32113 × 10 −5 A 10 = −0.13812 × 10 −6 β 5 = 1.271 f III / f I = 0.731 f S / f I = 0.432 f S / | f II | = 2.413 f S / f I-III = −0.0557 n 6 −n 5 = 0.359 n 4 −n 5 = 0.347
.
【００４５】実施例４ ｆ ＝ 5.15 〜 17.58 〜 60.00 ＦNO＝ 1.86 〜 2.18 〜 2.15 ω ＝ 31.5 °〜 10.2 ° 3.0 ° ｒ1 = 48.9829 ｄ1 = 1.1000 ｎd1 =1.84666 νd1 =23.78 ｒ2 = 26.4056 ｄ2 = 5.1000 ｎd2 =1.56873 νd2 =63.16 ｒ3 = 2980.0458 ｄ3 = 0.1500 ｒ4 = 27.4720 ｄ4 = 3.7000 ｎd3 =1.67003 νd3 =47.25 ｒ5 = 112.5276 ｄ5 = （可変） ｒ6 = 111.5576 ｄ6 = 0.9000 ｎd4 =1.80100 νd4 =34.97 ｒ7 = 6.5701 ｄ7 = 3.5000 ｒ8 = -13.2640 ｄ8 = 0.8000 ｎd5 =1.48749 νd5 =70.20 ｒ9 = 9.4809 ｄ9 = 2.6000 ｎd6 =1.84666 νd6 =23.78 ｒ10= 45.8500（非球面） ｄ10= （可変） ｒ11= ∞（絞り） ｄ11= 1.5000 ｒ12= 23.5662（非球面） ｄ12= 2.1000 ｎd7 =1.58913 νd7 =61.18 ｒ13= -70.1401 ｄ13= （可変） ｒ14= 11.1680 ｄ14= 0.8000 ｎd8 =1.84666 νd8 =23.78 ｒ15= 7.3776 ｄ15= 4.5000 ｎd9 =1.58913 νd9 =61.18 ｒ16= -20.2708（非球面） ｄ16= （可変） ｒ17= 32.6113 ｄ17= 0.8000 ｎd10=1.83400 νd10=37.16 ｒ18= 8.4427 ｄ18= 1.0000 ｒ19= 9.9291（非球面） ｄ19= 2.1000 ｎd11=1.58913 νd11=61.18 ｒ20= 36.9166 ｄ20= 2.4023 ｒ21= ∞ ｄ21= 6.3000 ｎd12=1.54771 νd12=62.83 ｒ22= ∞ ｄ22= 0.4000 ｒ23= 24.2370（非球面） ｄ23= 1.7000 ｎd13=1.49241 νd13=57.66 ｒ24= 85.8387 ｄ24= 1.2100 ｒ25= ∞ ｄ25= 0.6000 ｎd14=1.48749 νd14=70.20 ｒ26= ∞ 非球面係数 第１０面 Ｐ = 1 A4 =-0.33777×10-4 A6 = 0.96382×10-6 A8 =-0.16935×10-7 A10= 0 第１２面 Ｐ = 1 A4 =-0.76667×10-4 A6 = 0.24271×10-5 A8 =-0.94886×10-7 A10= 0.14146×10-8 第１６面 Ｐ = 1 A4 = 0.90653×10-4 A6 = 0.70656×10-5 A8 =-0.37791×10-6 A10= 0.64935×10-8 第１９面 Ｐ = 1Ａ４ ＝−０．７０２６４×10-4 A6 = 0.15360×10-4 A8 =-0.11677×10-5 A10= 0.37919×10-7 第２３面 Ｐ = 1 A4 =-0.15728×10-3 A6 =-0.77801×10-4 A8 = 0.51668×10-5 A10=-0.16430×10-6 β5 ＝1.270 ｆIII ／ｆI ＝0.752 ｆS ／ｆI ＝0.438 ｆS ／｜ｆII｜＝2.455 ｆS ／ｆI-III ＝-0.0740 ｎ6 −ｎ5 ＝0.359 ｎ4 −ｎ5 ＝0.314
。[0045] Example 4 f = 5.15 ~ 17.58 ~ 60.00 F NO = 1.86 ~ 2.18 ~ 2.15 ω = 31.5 ° ~ 10.2 ° 3.0 ° r 1 = 48.9829 d 1 = 1.1000 n d1 = 1.84666 ν d1 = 23.78 r 2 = 26.4056 d 2 = 5.1000 n d2 = 1.56873 ν d2 = 63.16 r 3 = 2980.0458 d 3 = 0.1500 r 4 = 27.4720 d 4 = 3.7000 n d3 = 1.67003 ν d3 = 47.25 r 5 = 112.5276 d 5 = ( variable) r 6 = 111.5576 d 6 = 0.9000 n d4 = 1.80100 ν d4 = 34.97 r 7 = 6.5701 d 7 = 3.5000 r 8 = -13.2640 d 8 = 0.8000 n d5 = 1.48749 ν d5 = 70.20 r 9 = 9.4809 d 9 = 2.6000 n d6 = 1.84666 ν d6 = 23.78 r 10 = 45.8500 (aspherical) d 10 = (variable) r 11 = ∞ (stop) d 11 = 1.5000 r 12 = 23.5662 ( aspherical) d 12 = 2.1000 n d7 = 1.58913 ν d7 = 61.18 r 13 = -70.1401 d 13 = (variable) r 14 = 11.1680 d 14 = 0.8000 n d8 = 1.84666 ν d8 = 23.78 r 15 = 7.3776 d 15 = 4.5000 n d9 = 1.58913 ν d9 = 61.18 r 16 = -20.2708 ( aspherical) d 16 = (variable) r 17 = 32.6113 d 17 = 0.8000 n d10 = 1.83400 ν d10 = 37.16 r 18 = 8.4427 d 18 = 1.0000 r 19 = 9.9291 ( aspherical) d 19 = 2.1000 n d11 = 1.58913 ν d11 = 61.18 r 20 = 36.9166 d 20 = 2.4023 r 21 = ∞ d 21 = 6.3000 n d12 = 1.54771 ν d12 = 62.83 r 22 = ∞ d 22 = 0.4000 r 23 = 24.2370 ( aspherical) d 23 = 1.7000 n d13 = 1.49241 ν d13 = 57.66 r 24 = 85.8387 d 24 = 1.2100 r 25 = ∞ d 25 = 0.6000 n d14 = 1.48749 ν d14 = 70.20 r 26 = ∞ Aspheric surface 10th surface P = 1 A 4 = -0.33777 × 10 -4 A 6 = 0.96382 × 10 -6 A 8 = -0.16935 × 10 -7 A 10 = 0 12th surface P = 1 A 4 = -0.76667 × 10 -4 A 6 = 0.24271 × 10 -5 A 8 = -0.94886 × 10 -7 A 10 = 0.14146 × 10 -8 16th surface P = 1 A 4 = 0.90653 × 10 -4 A 6 = 0.70656 × 10 - 5 A 8 = -0.37791 × 10 -6 A 10 = 0.64935 × 10 -8 19th surface P = 1A 4 = -0.70264 × 10 -4 A 6 = 0.15360 × 10 -4 A 8 = -0.11677 × 10 - 5 A 10 = 0.37919 × 10 -7 Surface 23 P = 1 A 4 = -0.15728 × 10 -3 A 6 = -0.77801 × 10 -4 A 8 = 0.51668 × 10 -5 A 10 = -0.16430 × 10 -6 β 5 = 1.270 f III / f I = 0.752 f S / f I = 0.438 f S / | f II | = 2.455 f S / f I-III = -0.0740 n 6 -n 5 = 0.359 n 4 -n 5 = 0.314
.
【００４６】実施例５ ｆ ＝ 5.15 〜 17.58 〜 60.00 ＦNO＝ 1.86 〜 2.21 〜 2.11 ω ＝ 31.5 °〜 10.2 ° 3.0 ° ｒ1 = 49.3029 ｄ1 = 1.1000 ｎd1 =1.84666 νd1 =23.78 ｒ2 = 26.5580 ｄ2 = 5.1000 ｎd2 =1.56873 νd2 =63.16 ｒ3 = 1337.9724 ｄ3 = 0.1500 ｒ4 = 27.4225 ｄ4 = 3.7000 ｎd3 =1.67003 νd3 =47.25 ｒ5 = 105.8052 ｄ5 = （可変） ｒ6 = 104.9194 ｄ6 = 0.9000 ｎd4 =1.80100 νd4 =34.97 ｒ7 = 6.2340 ｄ7 = 3.5000 ｒ8 = -17.4801 ｄ8 = 0.8000 ｎd5 =1.48749 νd5 =70.20 ｒ9 = 9.1491 ｄ9 = 2.6000 ｎd6 =1.84666 νd6 =23.78 ｒ10= 44.4892（非球面） ｄ10= （可変） ｒ11= ∞（絞り） ｄ11= 1.5000 ｒ12= 21.5451（非球面） ｄ12= 2.1000 ｎd7 =1.58913 νd7 =61.18 ｒ13= -50.4931 ｄ13= （可変） ｒ14= 20.9010（非球面） ｄ14= 4.5000 ｎd8 =1.58913 νd8 =61.18 ｒ15= -7.7555 ｄ15= 0.8000 ｎd9 =1.84666 νd9 =23.78 ｒ16= -12.0313 ｄ16= （可変） ｒ17= 39.7400 ｄ17= 0.8000 ｎd10=1.83400 νd10=37.16 ｒ18= 8.3497 ｄ18= 1.0000 ｒ19= 9.0749（非球面） ｄ19= 2.1000 ｎd11=1.58913 νd11=61.18 ｒ20= 41.5791 ｄ20= 2.7222 ｒ21= ∞ ｄ21= 6.3000 ｎd12=1.54771 νd12=62.83 ｒ22= ∞ ｄ22= 0.4000 ｒ23= 25.1729（非球面） ｄ23= 1.7000 ｎd13=1.49241 νd13=57.66 ｒ24= 58.4007 ｄ24= 1.2100 ｒ25= ∞ ｄ25= 0.6000 ｎd14=1.48749 νd14=70.20 ｒ26= ∞ 非球面係数 第１０面 Ｐ = 1 A4 =-0.73438×10-4 A6 = 0.21797×10-5 A8 =-0.70409×10-7 A10= 0 第１２面 Ｐ = 1 A4 =-0.55870×10-4 A6 = 0.50334×10-6 A8 =-0.32793×10-7 A10= 0.73728×10-9 第１４面 Ｐ = 1 A4 =-0.10464×10-3 A6 =-0.20783×10-5 A8 = 0.78274×10-7 A10=-0.13763×10-8 第１９面 Ｐ = 1 A4 =-0.17092×10-4 A6 = 0.74912×10-5 A8 =-0.59054×10-6 A10= 0.24852×10-7 第２３面 Ｐ = 1A4 =-0.70069×10-4 A6 =-0.69659×10-4 A8 = 0.49173×10-5 A10=-0.17157×10-6 β5 ＝1.270 ｆIII ／ｆI ＝0.630 ｆS ／ｆI ＝0.428 ｆS ／｜ｆII｜＝2.324 ｆS ／ｆI-III ＝0.0772 ｎ6 −ｎ5 ＝0.359 ｎ4 −ｎ5 ＝0.314
。[0046] Example 5 f = 5.15 ~ 17.58 ~ 60.00 F NO = 1.86 ~ 2.21 ~ 2.11 ω = 31.5 ° ~ 10.2 ° 3.0 ° r 1 = 49.3029 d 1 = 1.1000 n d1 = 1.84666 ν d1 = 23.78 r 2 = 26.5580 d 2 = 5.1000 n d2 = 1.56873 ν d2 = 63.16 r 3 = 1337.9724 d 3 = 0.1500 r 4 = 27.4225 d 4 = 3.7000 n d3 = 1.67003 ν d3 = 47.25 r 5 = 105.8052 d 5 = ( variable) r 6 = 104.9194 d 6 = 0.9000 n d4 = 1.80100 ν d4 = 34.97 r 7 = 6.2340 d 7 = 3.5000 r 8 = -17.4801 d 8 = 0.8000 n d5 = 1.48749 ν d5 = 70.20 r 9 = 9.1491 d 9 = 2.6000 n d6 = 1.84666 ν d6 = 23.78 r 10 = 44.4892 (aspherical) d 10 = (variable) r 11 = ∞ (stop) d 11 = 1.5000 r 12 = 21.5451 ( aspherical) d 12 = 2.1000 n d7 = 1.58913 ν d7 = 61.18 r 13 = -50.4931 d 13 = (variable) r 14 = 20.9010 (aspherical) d 14 = 4.5000 n d8 = 1.58913 ν d8 = 61.18 r 15 = -7.7555 d 15 = 0.8000 n d9 = 1.84666 ν d9 = 23.78 r 16 = - 12.0313 d 16 = (variable) r 17 = 39.7400 d 17 = 0.8000 n d10 = 1.83400 ν d10 = 37.16 r 18 = 8.3497 d 18 = 1.0000 r 19 = 9.0749 ( aspherical) d 19 = 2.1000 n d11 = 1.58913 ν d11 = 61.18 r 20 = 41.5791 d 20 = 2.7222 r 21 = ∞ d 21 = 6.3000 n d12 = 1.54771 ν d12 = 62.83 r 22 = ∞ d 22 = 0.4000 r 23 = 25.1729 ( aspherical) d 23 = 1.7000 n d13 = 1.49241 ν d13 = 57.66 r 24 = 58.4007 d 24 = 1.2100 r 25 = ∞ d 25 = 0.6000 n d14 = 1.48749 ν d14 = 70.20 r 26 = ∞ Aspheric surface 10th surface P = 1 A 4 = -0.73438 x 10 -4 A 6 = 0.21797 x 10 -5 A 8 = -0.70409 x 10 -7 A 10 = 0 12th surface P = 1 A 4 = -0.55870 × 10 -4 A 6 = 0.50334 × 10 -6 A 8 = -0.32793 × 10 -7 A 10 = 0.73728 × 10 -9 Surface 14 P = 1 A 4 = -0.10464 × 10 -3 A 6 = -0.20783 × 10 -5 A 8 = 0.78274 × 10 -7 A 10 = -0.13763 × 10 -8 Surface 19 P = 1 A 4 = -0.17092 × 10 -4 A 6 = 0.74912 × 10 -5 A 8 = -0.59054 × 10 -6 A 10 = 0.24852 × 10 -7 Surface 23 P = 1A 4 = -0.70069 × 10 -4 A 6 = -0.69659 × 10 -4 A 8 = 0.49173 × 10 -5 A 10 = -0.17157 × 10 -6 β 5 = 1.270 f III / f I = 0.630 f S / f I = 0.428 f S / | f II | = 2.324 f S / f I-III = 0.0772 n 6 -n 5 = 0.359 n 4 -n 5 = 0.314
.
【００４７】実施例６ ｆ ＝ 5.15 〜 17.58 〜 60.00 ＦNO＝ 1.86 〜 2.09 〜 2.15 ω ＝ 31.5 °〜 10.2 ° 3.0 ° ｒ1 = 49.3537 ｄ1 = 1.1000 ｎd1 =1.84666 νd1 =23.78 ｒ2 = 26.5119 ｄ2 = 5.1000 ｎd2 =1.56873 νd2 =63.16 ｒ3 = 844.0106 ｄ3 = 0.1500 ｒ4 = 27.0137 ｄ4 = 3.7000 ｎd3 =1.67003 νd3 =47.25 ｒ5 = 107.4470 ｄ5 = （可変） ｒ6 = 106.3036 ｄ6 = 0.9000 ｎd4 =1.80100 νd4 =34.97 ｒ7 = 7.2328 ｄ7 = 3.5000 ｒ8 = -11.2733 ｄ8 = 0.8000 ｎd5 =1.48749 νd5 =70.20 ｒ9 = 8.7754 ｄ9 = 2.6000 ｎd6 =1.84666 νd6 =23.78 ｒ10= 37.5089（非球面） ｄ10= （可変） ｒ11= ∞（絞り） ｄ11= 1.5000 ｒ12= 21.7729（非球面） ｄ12= 2.1000 ｎd7 =1.58913 νd7 =61.18 ｒ13= -72.3173 ｄ13= （可変） ｒ14= 11.2938 ｄ14= 0.8000 ｎd8 =1.84666 νd8 =23.78 ｒ15= 7.3029 ｄ15= 4.5000 ｎd9 =1.58913 νd9 =61.18 ｒ16= -19.0102（非球面） ｄ16= （可変） ｒ17= 72.2260 ｄ17= 0.8000 ｎd10=1.58423 νd10=30.49 ｒ18= 15.0212（非球面） ｄ18= 3.9740 ｒ19= ∞ ｄ19= 6.3000 ｎd11=1.54771 νd11=62.83 ｒ20= ∞ ｄ20= 0.4000 ｒ21= 20.1404（非球面） ｄ21= 1.7000 ｎd12=1.49241 νd12=57.66 ｒ22= 79.4196 ｄ22= 1.2100 ｒ23= ∞ ｄ23= 0.6000 ｎd13=1.48749 νd13=70.20 ｒ24= ∞ 非球面係数 第１０面 Ｐ = 1 A4 = 0.36849×10-4 A6 = 0.85849×10-6 A8 = 0.16305×10-7 A10= 0 第１２面 Ｐ = 1 A4 =-0.68982×10-4 A6 = 0.22183×10-5 A8 =-0.87033×10-7 A10= 0.12840×10-8 第１６面 Ｐ = 1 A4 = 0.97893×10-4 A6 = 0.65630×10-5 A8 =-0.35433×10-6 A10= 0.60002×10-8 第１８面 Ｐ = 1 A4 = 0.96953×10-4 A6 =-0.88180×10-5 A8 = 0.26168×10-6 A10= 0 第２１面 Ｐ = 1 A4 =-0.50127×10-3 A6 =-0.68751×10-5 A8 =-0.44091×10-6 A10= 0 β5 ＝1.269 ｆIII ／ｆI ＝0.702 ｆS ／ｆI ＝0.431 ｆS ／｜ｆII｜＝2.430 fS ／ｆI-III ＝0.547 ｎ6 −ｎ5 ＝0.359 ｎ4 −ｎ5 ＝0.314
。[0047] Example 6 f = 5.15 ~ 17.58 ~ 60.00 F NO = 1.86 ~ 2.09 ~ 2.15 ω = 31.5 ° ~ 10.2 ° 3.0 ° r 1 = 49.3537 d 1 = 1.1000 n d1 = 1.84666 ν d1 = 23.78 r 2 = 26.5119 d 2 = 5.1000 n d2 = 1.56873 ν d2 = 63.16 r 3 = 844.0106 d 3 = 0.1500 r 4 = 27.0137 d 4 = 3.7000 n d3 = 1.67003 ν d3 = 47.25 r 5 = 107.4470 d 5 = ( variable) r 6 = 106.3036 d 6 = 0.9000 n d4 = 1.80100 ν d4 = 34.97 r 7 = 7.2328 d 7 = 3.5000 r 8 = -11.2733 d 8 = 0.8000 n d5 = 1.48749 ν d5 = 70.20 r 9 = 8.7754 d 9 = 2.6000 n d6 = 1.84666 ν d6 = 23.78 r 10 = 37.5089 (aspherical) d 10 = (variable) r 11 = ∞ (stop) d 11 = 1.5000 r 12 = 21.7729 ( aspherical) d 12 = 2.1000 n d7 = 1.58913 ν d7 = 61.18 r 13 = -72.3173 d 13 = (variable) r 14 = 11.2938 d 14 = 0.8000 n d8 = 1.84666 ν d8 = 23.78 r 15 = 7.3029 d 15 = 4.5000 n d9 = 1.58913 ν d9 = 61.18 r 16 = -19.0102 ( aspherical) d 16 = (variable) r 17 = 72.2260 17 = 0.8000 n d10 = 1.58423 ν d10 = 30.49 r 18 = 15.0212 ( aspherical) d 18 = 3.9740 r 19 = ∞ d 19 = 6.3000 n d11 = 1.54771 ν d11 = 62.83 r 20 = ∞ d 20 = 0.4000 r 21 = 20.1404 (aspherical) d 21 = 1.7000 n d12 = 1.49241 ν d12 = 57.66 r 22 = 79.4196 d 22 = 1.2100 r 23 = ∞ d 23 = 0.6000 n d13 = 1.48749 ν d13 = 70.20 r 24 = ∞ Aspheric surface 10th surface P = 1 A 4 = 0.36849 × 10 -4 A 6 = 0.85849 × 10 -6 A 8 = 0.16305 × 10 -7 A 10 = 0 12th surface P = 1 A 4 = -0.68982 × 10 -4 A 6 = 0.22183 × 10 -5 A 8 = -0.87033 × 10 -7 A 10 = 0.12840 × 10 -8 Surface 16 P = 1 A 4 = 0.97893 × 10 -4 A 6 = 0.65630 × 10 -5 A 8 = -0.35433 × 10 -6 A 10 = 0.60002 × 10 -8 Surface 18 P = 1 A 4 = 0.96953 × 10 -4 A 6 = -0.88 180 × 10 -5 A 8 = 0.26168 × 10 -6 A 10 = 0 21st page P = 1 A 4 = -0.50127 × 10 -3 A 6 = -0.68751 × 10 -5 A 8 = -0.44091 × 10 -6 A 10 = 0 β 5 = 1.269 f III / f I = 0.702 f S / f I = 0.431 f S / | f II | = 2.430 f S / f I-III = 0.547 n 6 −n 5 = 0.359 n 4 −n 5 = 0.314
.
【００４８】実施例７ ｆ ＝ 5.15 〜 17.58 〜 60.00 ＦNO＝ 1.86 〜 2.04 〜 2.09 ω ＝ 31.5 °〜 10.2 ° 3.0 ° ｒ1 = 48.6479 ｄ1 = 1.1000 ｎd1 =1.84666 νd1 =23.78 ｒ2 = 27.3067 ｄ2 = 5.1000 ｎd2 =1.56873 νd2 =63.16 ｒ3 = 432.2291 ｄ3 = 0.1500 ｒ4 = 29.0372 ｄ4 = 3.7000 ｎd3 =1.65844 νd3 =50.86 ｒ5 = 116.1249 ｄ5 = （可変） ｒ6 = 115.0131 ｄ6 = 0.9000 ｎd4 =1.83400 νd4 =37.16 ｒ7 = 7.1322 ｄ7 = 3.5000 ｒ8 = -14.8634 ｄ8 = 0.8000 ｎd5 =1.48749 νd5 =70.20 ｒ9 = 10.7360 ｄ9 = 2.6000 ｎd6 =1.84666 νd6 =23.78 ｒ10= 88.3413（非球面） ｄ10= （可変） ｒ11= ∞（絞り） ｄ11= 1.5000 ｒ12= 8.9714（非球面） ｄ12= 3.7000 ｎd7 =1.58913 νd7 =61.18 ｒ13= -34.1315 ｄ13= 0.1500 ｒ14= 26.6219 ｄ14= 0.8000 ｎd8 =1.80610 νd8 =40.95 ｒ15= 8.7687 ｄ15= （可変） ｒ16= 11.7459（非球面） ｄ16= 4.5000 ｎd9 =1.58913 νd9 =61.18 ｒ17= -8.0854 ｄ17= 0.8000 ｎd10=1.80518 νd10=25.43 ｒ18= -13.6671 ｄ18= （可変） ｒ19= 30.0849 ｄ19= 0.8000 ｎd11=1.58423 νd11=30.49 ｒ20= 9.9473（非球面） ｄ20= 2.5114 ｒ21= ∞ ｄ21= 6.3000 ｎd12=1.54771 νd12=62.83 ｒ22= ∞ ｄ22= 0.4000 ｒ23= 12.5034（非球面） ｄ23= 1.7000 ｎd13=1.49241 νd13=57.66 ｒ24= 27.5750 ｄ24= 1.2100 ｒ25= ∞ ｄ25= 0.6000 ｎd14=1.48749 νd14=70.20 ｒ26= ∞ 非球面係数 第１０面 Ｐ = 1 A4 =-0.27025×10-4 A6 = 0.14778×10-6 A8 =-0.11989×10-8 A10= 0 第１２面 Ｐ = 1 A4 =-0.16340×10-3 A6 =-0.17226×10-5 A8 =-0.10592×10-7 A10= 0 第１６面 Ｐ = 1 A4 =-0.15126×10-3 A6 =-0.12817×10-5 A8 = 0.48361×10-7 A10= 0 第２０面 Ｐ = 1 A4 = 0.11504×10-3 A6 =-0.87052×10-5 A8 = 0.40211×10-6 A10= 0 第２３面 Ｐ = 1 A4 = 0.36345×10-3 A6 =-0.22025×10-4 A8 = 0.50014×10-6 A10= 0 β5 ＝1.270 ｆIII ／ｆI ＝0.689 ｆS ／ｆI ＝0.401 ｆS ／｜ｆII｜＝2.128 ｆS ／ｆI-III ＝0.448 ｎ6 −ｎ5 ＝0.359 ｎ4 −ｎ5 ＝0.347
。[0048] Example 7 f = 5.15 ~ 17.58 ~ 60.00 F NO = 1.86 ~ 2.04 ~ 2.09 ω = 31.5 ° ~ 10.2 ° 3.0 ° r 1 = 48.6479 d 1 = 1.1000 n d1 = 1.84666 ν d1 = 23.78 r 2 = 27.3067 d 2 = 5.1000 n d2 = 1.56873 ν d2 = 63.16 r 3 = 432.2291 d 3 = 0.1500 r 4 = 29.0372 d 4 = 3.7000 n d3 = 1.65844 ν d3 = 50.86 r 5 = 116.1249 d 5 = ( variable) r 6 = 115.0131 d 6 = 0.9000 n d4 = 1.83400 ν d4 = 37.16 r 7 = 7.1322 d 7 = 3.5000 r 8 = -14.8634 d 8 = 0.8000 n d5 = 1.48749 ν d5 = 70.20 r 9 = 10.7360 d 9 = 2.6000 n d6 = 1.84666 ν d6 = 23.78 r 10 = 88.3413 (aspherical) d 10 = (variable) r 11 = ∞ (stop) d 11 = 1.5000 r 12 = 8.9714 ( aspherical) d 12 = 3.7000 n d7 = 1.58913 ν d7 = 61.18 r 13 = -34.1315 d 13 = 0.1500 r 14 = 26.6219 d 14 = 0.8000 n d8 = 1.80610 ν d8 = 40.95 r 15 = 8.7687 d 15 = ( variable) r 16 = 11.7459 (aspherical) d 16 = 4.5000 n d9 = 1.58913 ν d9 = 61.18 r 17 = -8.0854 d 17 = 0.8000 n d10 = 1.80518 ν d10 = 25.43 r 18 = -13.6671 d 18 = ( Variable) r 19 = 30.0849 d 19 = 0.8000 n d11 = 1.58423 ν d11 = 30.49 r 20 = 9.9473 ( aspherical) d 20 = 2.5114 r 21 = ∞ d 21 = 6.3000 n d12 = 1.54771 ν d12 = 62.83 r 22 = ∞ d 22 = 0.4000 r 23 = 12.5034 ( aspherical) d 23 = 1.7000 n d13 = 1.49241 ν d13 = 57.66 r 24 = 27.5750 d 24 = 1.2100 r 25 = ∞ d 25 = 0.6000 n d14 = 1.48749 ν d14 = 70.20 r 26 = ∞ Aspheric surface 10th surface P = 1 A 4 = -0.27025 × 10 -4 A 6 = 0.14778 × 10 -6 A 8 = -0.11989 × 10 -8 A 10 = 0 12th surface P = 1 A 4 = -0.16340 × 10 -3 A 6 = -0.17226 × 10 -5 A 8 = -0.10592 × 10 -7 A 10 = 0 16th page P = 1 A 4 = -0.15 126 × 10 -3 A 6 = -0.12817 × 10 -5 A 8 = 0.48361 × 10 -7 A 10 = 0 Surface 20 P = 1 A 4 = 0.11504 × 10 -3 A 6 = -0.87052 × 10 -5 A 8 = 0.40211 × 10 -6 A 10 = 0 Surface 23 P = 1 A 4 = 0.36345 × 10 -3 A 6 = -0.22025 × 10 -4 A 8 = 0.50014 × 10 -6 A 10 = 0 β 5 = 1.270 f III / f I = 0.689 f S / f I = 0.401 f S / | f II | = 2.128 f S / f I-III = 0.448 n 6 -n 5 = 0.359 n 4 -n 5 = 0.347
.
【００４９】実施例８ ｆ ＝ 5.15 〜 17.58 〜 60.00 FNO＝ 1.86 〜 2.04 〜 2.09 ω ＝ 31.5 °〜 10.2 ° 3.0 ° ｒ1 = 46.3320 ｄ1 = 1.1000 ｎd1 =1.84666 νd1 =23.78 ｒ2 = 27.6061 ｄ2 = 5.1000 ｎd2 =1.56873 νd2 =63.16 ｒ3 = 651.6182 ｄ3 = 0.1500 ｒ4 = 28.5073 ｄ4 = 3.6000 ｎd3 =1.62299 νd3 =58.14 ｒ5 = 107.2832 ｄ5 = （可変） ｒ6 = 106.1988 ｄ6 = 0.9000 ｎd4 =1.77250 νd4 =49.66 ｒ7 = 7.7456 ｄ7 = 3.9000 ｒ8 = -11.2936 ｄ8 = 0.8000 ｎd5 =1.48749 νd5 =70.20 ｒ9 = 15.0093 ｄ9 = 2.3000 ｎd6 =1.84666 νd6 =23.78 ｒ10= 150.4581（非球面） ｄ10= （可変） ｒ11= ∞（絞り） ｄ11= 1.5000 ｒ12= 14.9578（非球面） ｄ12= 2.6000 ｎd7 =1.66524 νd7 =55.12 ｒ13= -76.8064 ｄ13= 0.1500 ｒ14= 16.4932 ｄ14= 2.2000 ｎd8 =1.58267 νd8 =46.33 ｒ15= -494.6834 ｄ15= 0.8000 ｒ16= 95.7939 ｄ16= 0.8000 ｎd9 =1.84666 νd9 =23.78 ｒ17= 11.3082 ｄ17= （可変） ｒ18= 10.8619（非球面） ｄ18= 3.3000 ｎd10=1.58913 νd10=61.18 ｒ19= -19.7402 ｄ19= （可変） ｒ20= 30.7610 ｄ20= 0.8000 ｎd11=1.58423 νd11=30.49 ｒ21= 9.0104（非球面） ｄ21= 1.4000 ｒ22= ∞ ｄ22= 6.3000 ｎd12=1.54771 νd12=62.83 ｒ23= ∞ ｄ23= 0.4000 ｒ24= 11.9053（非球面） ｄ24= 1.7000 ｎd13=1.49241 νd13=57.66 ｒ25= 34.3844 ｄ25= 1.2100 ｒ26= ∞ ｄ26= 0.6000 ｎd14=1.48749 νd14=70.20 ｒ27= ∞ 非球面係数 第１０面 Ｐ = 1 A4 =-0.27658×10-4 A6 =-0.35480×10-6 A8 = 0.20967×10-7 A10= 0 第１２面 Ｐ = 1 A4 =-0.46537×10-4 A6 =-0.99368×10-6 A8 = 0.15703×10-7 A10= 0 第１８面 Ｐ = 1 A4 =-0.17455×10-3 A6 =-0.33653×10-5 A8 = 0.76028×10-7 A10= 0 第２１面 Ｐ = 1 A4 = 0.22469×10-3 A6 =-0.27049×10-4 A8 = 0.11262×10-5 A10= 0 第２４面 Ｐ = 1 A4 = 0.26447×10-3 A6 =-0.50161×10-4 A8 = 0.49950×10-6 A10= 0 β5 ＝1.270 ｆIII ／ｆI ＝0.574 ｆS ／ｆI ＝0.409 ｆS ／｜ｆII｜＝2.200 ｆS ／ｆI-III ＝0.780 ｎ6 −ｎ5 ＝0.359 ｎ4 −ｎ5 ＝0.285
。[0049] Example 8 f = 5.15 ~ 17.58 ~ 60.00 F NO = 1.86 ~ 2.04 ~ 2.09 ω = 31.5 ° ~ 10.2 ° 3.0 ° r 1 = 46.3320 d 1 = 1.1000 n d1 = 1.84666 ν d1 = 23.78 r 2 = 27.6061 d 2 = 5.1000 n d2 = 1.56873 ν d2 = 63.16 r 3 = 651.6182 d 3 = 0.1500 r 4 = 28.5073 d 4 = 3.6000 n d3 = 1.62299 ν d3 = 58.14 r 5 = 107.2832 d 5 = ( variable) r 6 = 106.1988 d 6 = 0.9000 n d4 = 1.77250 ν d4 = 49.66 r 7 = 7.7456 d 7 = 3.9000 r 8 = -11.2936 d 8 = 0.8000 n d5 = 1.48749 ν d5 = 70.20 r 9 = 15.0093 d 9 = 2.3000 n d6 = 1.84666 ν d6 = 23.78 r 10 = 150.4581 (aspherical) d 10 = (variable) r 11 = ∞ (stop) d 11 = 1.5000 r 12 = 14.9578 ( aspherical) d 12 = 2.6000 n d7 = 1.66524 ν d7 = 55.12 r 13 = -76.8064 d 13 = 0.1500 r 14 = 16.4932 d 14 = 2.2000 n d8 = 1.58267 ν d8 = 46.33 r 15 = -494.6834 d 15 = 0.8000 r 16 = 95.7939 d 16 = 0.8000 n d9 = 1.84666 ν d9 = 23.78 r 17 = 11.3082 d 17 = (variable) r 18 = 10.8619 (aspherical surface) d 18 = 3.3000 n d10 = 1.58913 ν d10 = 61.18 r 19 = -19.7402 d 19 = (variable) r 20 = 30.7610 d 20 = 0.8000 nd 11 = 1.58423 ν d11 = 30.49 r 21 = 9.0104 (aspherical) d 21 = 1.4000 r 22 = ∞ d 22 = 6.3000 n d12 = 1.54771 ν d12 = 62.83 r 23 = ∞ d 23 = 0.4000 r 24 = 11.9053 ( aspherical) d 24 = 1.7000 n d13 = 1.49241 ν d13 = 57.66 r 25 = 34.3844 d 25 = 1.2100 r 26 = ∞ d 26 = 0.6000 n d14 = 1.48749 ν d14 = 70.20 r 27 = ∞ Aspheric coefficient 10th surface P = 1 A 4 = -0.27658 × 10 -4 A 6 = -0.35480 × 10 -6 A 8 = 0.20967 × 10 -7 A 10 = 0 12th surface P = 1 A 4 = -0.46537 × 10 -4 A 6 = -0.99368 × 10 -6 A 8 = 0.15703 × 10 -7 A 10 = 0 18th page P = 1 A 4 = -0.17455 × 10 -3 A 6 = -0.33653 × 10 -5 A 8 = 0.76028 × 10 -7 A 10 = 0 Surface 21 P = 1 A 4 = 0.22469 × 10 -3 A 6 = -0.27049 × 10 -4 A 8 = 0.11262 × 10 -5 A 10 = 0 Surface 24 P = 1 A 4 = 0.26447 × 10 -3 A 6 = -0.50161 × 10 -4 A 8 = 0.49950 × 10 -6 A 10 = 0 β 5 = 1.270 f III / f I = 0.574 f S / f I = 0.409 f S / | f II | = 2.200 f S / f I-III = 0.780 n 6 -n 5 = 0.359 n 4 -n 5 = 0.285
.
【００５０】実施例９ ｆ ＝ 5.15 〜 17.58 〜 60.00 ＦNO＝ 1.86 〜 2.11 〜 2.14 ω ＝ 31.5 °〜 10.2 ° 3.0 ° ｒ1 = 50.7458 ｄ1 = 1.1000 ｎd1 =1.84666 νd1 =23.78 ｒ2 = 25.9574 ｄ2 = 5.1000 ｎd2 =1.56873 νd2 =63.16 ｒ3 = 647.2871 ｄ3 = 0.1500 ｒ4 = 27.5776 ｄ4 = 3.7000 ｎd3 =1.68250 νd3 =44.65 ｒ5 = 127.2963 ｄ5 = （可変） ｒ6 = 126.5391 ｄ6 = 0.9000 ｎd4 =1.80100 νd4 =34.97 ｒ7 = 7.2843 ｄ7 = 3.5000 ｒ8 = -12.0938 ｄ8 = 0.8000 ｎd5 =1.48749 νd5 =70.20 ｒ9 = 8.8444 ｄ9 = 2.6000 ｎd6 =1.84666 νd6 =23.78 ｒ10= 37.6677（非球面） ｄ10= （可変） ｒ11= ∞（絞り） ｄ11= （可変） ｒ12= 20.7361（非球面） ｄ12= 2.1000 ｎd7 =1.58913 νd7 =61.18 ｒ13= -53.6235 ｄ13= （可変） ｒ14= 10.1462 ｄ14= 0.8000 ｎd8 =1.84666 νd8 =23.78 ｒ15= 6.7238 ｄ15= 4.5000 ｎd9 =1.58913 νd9 =61.18 ｒ16= -19.3327（非球面） ｄ16= （可変） ｒ17= 73.8493 ｄ17= 0.8000 ｎd10=1.58423 νd10=30.49 ｒ18= 9.9263（非球面） ｄ18= 2.8105 ｒ19= ∞ ｄ19= 6.3000 ｎd11=1.54771 νd11=62.83 ｒ20= ∞ ｄ20= 0.4000 ｒ21= 15.1517（非球面） ｄ21= 1.7000 ｎd12=1.49241 νd12=57.66 ｒ22= 84.8457 ｄ22= 1.2100 ｒ23= ∞ ｄ23= 0.6000 ｎd13=1.48749 νd13=70.20 ｒ24= ∞ 非球面係数 第１０面 Ｐ = 1 A4 = 0.26655×10-4 A6 = 0.11457×10-5 A8 = 0.12038×10-7 A10= 0 第１２面 Ｐ = 1 A4 =-0.60438×10-4 A6 = 0.32146×10-6 A8 = 0.33627×10-7 A10=-0.91890×10-9 第１６面 Ｐ = 1 A4 = 0.15549×10-3 A6 = 0.55055×10-5 A8 =-0.29328×10-6 A10= 0.44761×10-8 第１８面 Ｐ = 1 A4 = 0.21739×10-3 A6 =-0.20237×10-4 A8 = 0.75429×10-6 A10= 0 第２１面 Ｐ = 1 A4 =-0.80460×10-4 A6 =-0.14854×10-4 A8 =-0.63785×10-6 A10= 0 β5 ＝1.400 ｆIII ／ｆI ＝0.625 ｆS ／ｆI ＝0.428 ｆS ／｜ｆII｜＝2.373 ｆS ／ｆI-III ＝0.862 ｎ6 −ｎ5 ＝0.359 ｎ4 −ｎ5 ＝0.314
。[0050] Example 9 f = 5.15 ~ 17.58 ~ 60.00 F NO = 1.86 ~ 2.11 ~ 2.14 ω = 31.5 ° ~ 10.2 ° 3.0 ° r 1 = 50.7458 d 1 = 1.1000 n d1 = 1.84666 ν d1 = 23.78 r 2 = 25.9574 d 2 = 5.1000 n d2 = 1.56873 ν d2 = 63.16 r 3 = 647.2871 d 3 = 0.1500 r 4 = 27.5776 d 4 = 3.7000 n d3 = 1.68250 ν d3 = 44.65 r 5 = 127.2963 d 5 = ( variable) r 6 = 126.5391 d 6 = 0.9000 n d4 = 1.80100 ν d4 = 34.97 r 7 = 7.2843 d 7 = 3.5000 r 8 = -12.0938 d 8 = 0.8000 n d5 = 1.48749 ν d5 = 70.20 r 9 = 8.8444 d 9 = 2.6000 n d6 = 1.84666 ν d6 = 23.78 r 10 = 37.6677 (aspherical) d 10 = (variable) r 11 = ∞ (stop) d 11 = (variable) r 12 = 20.7361 (aspherical) d 12 = 2.1000 n d7 = 1.58913 ν d7 = 61.18 r 13 = -53.6235 d 13 = (variable) r 14 = 10.1462 d 14 = 0.8000 n d8 = 1.84666 ν d8 = 23.78 r 15 = 6.7238 d 15 = 4.5000 n d9 = 1.58913 ν d9 = 61.18 r 16 = -19.3327 ( non Spherical surface) d 16 = (variable) r 17 = 73. 8493 d 17 = 0.8000 n d10 = 1.58423 ν d10 = 30.49 r 18 = 9.9263 ( aspherical) d 18 = 2.8105 r 19 = ∞ d 19 = 6.3000 n d11 = 1.54771 ν d11 = 62.83 r 20 = ∞ d 20 = 0.4000 r 21 = 15.1517 (aspherical) d 21 = 1.7000 n d12 = 1.49241 ν d12 = 57.66 r 22 = 84.8457 d 22 = 1.2100 r 23 = ∞ d 23 = 0.6000 n d13 = 1.48749 ν d13 = 70.20 r 24 = ∞ Aspheric surface 10th surface P = 1 A 4 = 0.26655 × 10 -4 A 6 = 0.11457 × 10 -5 A 8 = 0.12038 × 10 -7 A 10 = 0 12th surface P = 1 A 4 = -0.604438 × 10 -4 A 6 = 0.32146 × 10 -6 A 8 = 0.33627 × 10 -7 A 10 = -0.91890 × 10 -9 Surface 16 P = 1 A 4 = 0.15549 × 10 -3 A 6 = 0.55055 × 10 -5 A 8 = -0.29328 × 10 -6 A 10 = 0.44761 × 10 -8 Surface 18 P = 1 A 4 = 0.21739 × 10 -3 A 6 = -0.20237 × 10 -4 A 8 = 0.75429 × 10 -6 A 10 = 0 Surface 21 P = 1 A 4 = -0.80460 × 10 -4 A 6 = -0.14854 × 10 -4 A 8 = -0.63785 × 10 -6 A 10 = 0 β 5 = 1.400 f III / f I = 0.625 f S / f I = 0.428 f S / | f II | = 2.373 f S / f I-III = 0.862 n 6 -n 5 = 0.359 n 4 -n 5 = 0.314
.
【００５１】実施例１０ ｆ ＝ 5.15 〜 17.58 〜 60.00 ＦNO＝ 1.86 〜 2.04 〜 2.09 ω ＝ 31.5 °〜 10.2 ° 3.0 ° ｒ1 = 48.5865 ｄ1 = 1.1000 ｎd1 =1.84666 νd1 =23.78 ｒ2 = 27.2588 ｄ2 = 5.1000 ｎd2 =1.56873 νd2 =63.16 ｒ3 = 455.3065 ｄ3 = 0.1500 ｒ4 = 29.5164 ｄ4 = 3.6000 ｎd3 =1.65844 νd3 =50.86 ｒ5 = 128.2994 ｄ5 = （可変） ｒ6 = 127.3849 ｄ6 = 0.9000 ｎd4 =1.80610 νd4 =40.95 ｒ7 = 7.6226 ｄ7 = 3.9000 ｒ8 = -16.7784 ｄ8 = 0.8000 ｎd5 =1.48749 νd5 =70.20 ｒ9 = 11.5963 ｄ9 = 2.6000 ｎd6 =1.84666 νd6 =23.78 ｒ10= 60.6529（非球面） ｄ10= （可変） ｒ11= 13.8512（非球面） ｄ11= 2.3000 ｎd7 =1.66524 νd7 =55.12 ｒ12= -202.0041 ｄ12= 0.6000 ｒ13= ∞（絞り） ｄ13= 1.5000 ｒ14= 15.9995 ｄ14= 1.8000 ｎd8 =1.67003 νd8 =47.25 ｒ15= 138.4845 ｄ15= 0.8000 ｒ16= -2429.7156 ｄ16= 0.8000 ｎd9 =1.80518 νd9 =25.43 ｒ17= 10.3949 ｄ17= （可変） ｒ18= 9.5861（非球面） ｄ18= 3.3000 ｎd10=1.58913 νd10=61.18 ｒ19= -16.6742 ｄ19= （可変） ｒ20= 24.4581 ｄ20= 0.8000 ｎd11=1.58423 νd11=30.49 ｒ21= 7.8870（非球面） ｄ21= 1.4000 ｒ22= ∞ ｄ22= 6.3000 ｎd12=1.54771 νd12=62.83 ｒ23= ∞ ｄ23= 0.4000 ｒ24= 10.3762（非球面） ｄ24= 2.2000 ｎd13=1.49241 νd13=57.66 ｒ25= 38.4791 ｄ25= 1.2100 ｒ26= ∞ ｄ26= 0.6000 ｎd14=1.48749 νd14=70.20 ｒ27= ∞ 非球面係数 第１０面 Ｐ = 1 A4 =-0.22286×10-4 A6 =-0.17408×10-6 A8 = 0.31905×10-8 A10= 0 第１１面 Ｐ = 1 A4 =-0.27644×10-4 A6 =-0.41026×10-6 A8 =-0.52935×10-8 A10= 0 第１８面 Ｐ = 1 A4 =-0.27803×10-3 A6 =-0.29162×10-5 A8 = 0.58773×10-7 A10= 0 第２１面 Ｐ = 1 A4 = 0.48928×10-3 A6 =-0.57900×10-4 A8 = 0.27500×10-5 A10= 0 第２４面 Ｐ = 1 A4 = 0.12110×10-2 A6 =-0.54513×10-4 A8 = 0.10133×10-5 A10= 0 β5 ＝1.270 ｆIII ／ｆI ＝0.698 ｆS ／ｆI ＝0.405 ｆS ／｜ｆII｜＝2.045 ｆS ／ｆI-III ＝0.580 ｎ6 −ｎ5 ＝0.359 ｎ4 −ｎ5 ＝0.319
。[0051] Example 10 f = 5.15 ~ 17.58 ~ 60.00 F NO = 1.86 ~ 2.04 ~ 2.09 ω = 31.5 ° ~ 10.2 ° 3.0 ° r 1 = 48.5865 d 1 = 1.1000 n d1 = 1.84666 ν d1 = 23.78 r 2 = 27.2588 d 2 = 5.1000 n d2 = 1.56873 ν d2 = 63.16 r 3 = 455.3065 d 3 = 0.1500 r 4 = 29.5164 d 4 = 3.6000 n d3 = 1.65844 ν d3 = 50.86 r 5 = 128.2994 d 5 = ( variable) r 6 = 127.3849 d 6 = 0.9000 n d4 = 1.80610 ν d4 = 40.95 r 7 = 7.6226 d 7 = 3.9000 r 8 = -16.7784 d 8 = 0.8000 n d5 = 1.48749 ν d5 = 70.20 r 9 = 11.5963 d 9 = 2.6000 n d6 = 1.84666 ν d6 = 23.78 r 10 = 60.6529 (aspherical) d 10 = (variable) r 11 = 13.8512 (aspherical) d 11 = 2.3000 n d7 = 1.66524 ν d7 = 55.12 r 12 = -202.0041 d 12 = 0.6000 r 13 = ∞ (stop) d 13 = 1.5000 r 14 = 15.9995 d 14 = 1.8000 n d8 = 1.67003 ν d8 = 47.25 r 15 = 138.4845 d 15 = 0.8000 r 16 = -2429.7156 d 16 = 0.8000 n d9 = 1.80518 ν d9 = 25.43 r 17 = 10.3949 d 17 = (variable r 18 = 9.5861 (aspherical) d 18 = 3.3000 n d10 = 1.58913 ν d10 = 61.18 r 19 = -16.6742 d 19 = ( Variable) r 20 = 24.4581 d 20 = 0.8000 n d11 = 1.58423 ν d11 = 30.49 r 21 = 7.8870 (aspherical) d 21 = 1.4000 r 22 = ∞ d 22 = 6.3000 n d12 = 1.54771 ν d12 = 62.83 r 23 = ∞ d 23 = 0.4000 r 24 = 10.3762 ( aspherical) d 24 = 2.2000 n d13 = 1.49241 ν d13 = 57.66 r 25 = 38.4791 d 25 = 1.2100 r 26 = ∞ d 26 = 0.6000 n d14 = 1.48749 ν d14 = 70.20 r 27 = ∞ Aspheric surface 10th surface P = 1 A 4 = -0.22286 × 10 -4 A 6 = -0.17408 × 10 -6 A 8 = 0.31905 × 10 -8 A 10 = 0 11th surface P = 1 A 4 = -0.27644 × 10 -4 A 6 = -0.41026 × 10 -6 A 8 = -0.52935 × 10 -8 A 10 = 0 18th page P = 1 A 4 = -0.27803 × 10 -3 A 6 = -0.29162 × 10 -5 A 8 = 0.58773 × 10 -7 A 10 = 0 Surface 21 P = 1 A 4 = 0.48928 × 10 -3 A 6 = -0.57900 × 10 -4 A 8 = 0.27500 × 10 -5 A 10 = 0 Surface 24 P = 1 A 4 = 0.12110 × 10 -2 A 6 = -0.54513 × 10 -4 A 8 = 0.10133 × 10 -5 A 10 = 0 β 5 = 1.270 f III / f I = 0.698 f S / f I = 0.405 f S / | f II | = 2.045 f S / f I-III = 0.580 n 6 -n 5 = 0.359 n 4 -n 5 = 0.319
.
【００５２】実施例１１ ｆ ＝ 5.15 〜 17.58 〜 60.00 ＦNO＝ 1.86 〜 2.18 〜 2.15 ω ＝ 31.5 °〜 10.2 ° 3.0 ° ｒ1 = 48.4331 ｄ1 = 1.1000 ｎd1 =1.84666 νd1 =23.78 ｒ2 = 26.7655 ｄ2 = 5.1000 ｎd2 =1.56873 νd2 =63.16 ｒ3 = 17050.4298 ｄ3 = 0.1500 ｒ4 = 27.6169 ｄ4 = 3.7000 ｎd3 =1.66672 νd3 =48.32 ｒ5 = 110.0610 ｄ5 = （可変） ｒ6 = 108.2896 ｄ6 = 0.9000 ｎd4 =1.80100 νd4 =34.97 ｒ7 = 6.9714 ｄ7 = 3.5000 ｒ8 = -14.0637 ｄ8 = 0.8000 ｎd5 =1.48749 νd5 =70.20 ｒ9 = 9.4503 ｄ9 = 2.6000 ｎd6 =1.84666 νd6 =23.78 ｒ10= 39.3635（非球面） ｄ10= （可変） ｒ11= 20.9972（非球面） ｄ11= 2.1000 ｎd7 =1.58913 νd7 =61.18 ｒ12= -86.8208 ｄ12= 0.8000 ｒ13= ∞（絞り） ｄ13= （可変） ｒ14= 11.1717 ｄ14= 0.8000 ｎd8 =1.84666 νd8 =23.78 ｒ15= 7.4201 ｄ15= 4.5000 ｎd9 =1.58913 νd9 =61.18 ｒ16= -20.1319（非球面） ｄ16= （可変） ｒ17= 31.9705 ｄ17= 0.8000 ｎd10=1.80100 νd10=34.97 ｒ18= 7.8159 ｄ18= 1.0000 ｒ19= 11.0842（非球面） ｄ19= 2.1000 ｎd11=1.58913 νd11=61.18 ｒ20= 95.2442 ｄ20= 2.0790 ｒ21= ∞ ｄ21= 6.3000 ｎd12=1.54771 νd12=62.83 ｒ22= ∞ ｄ22= 0.4000 ｒ23= 15.1381（非球面） ｄ23= 1.7000 ｎd13=1.49241 νd13=57.66 ｒ24= 495.7590 ｄ24= 1.2100 ｒ25= ∞ ｄ25= 0.6000 ｎd14=1.48749 νd14=70.20 ｒ26= ∞ 非球面係数 第１０面 Ｐ = 1 A4 =-0.15672×10-4 A6 = 0.16675×10-6 A8 = 0.11985×10-7 A10= 0 第１１面 Ｐ = 1 A4 =-0.71017×10-4 A6 = 0.19429×10-5 A8 =-0.14798×10-6 A10= 0.33691×10-8 第１６面 Ｐ = 1 A4 = 0.11912×10-3 A6 = 0.56770×10-5 A8 =-0.40152×10-6 A10= 0.82922×10-8 第１９面 Ｐ = 1 A4 =-0.60065×10-4 A6 = 0.20930×10-4 A8 =-0.24113×10-5 A10= 0.96736×10-7 第２３面 Ｐ = 1 A4 = 0.35380×10-3 A6 =-0.52968×10-4 A8 = 0.48508×10-5 A10=-0.16920×10-6 β5 ＝1.222 ｆIII ／ｆI ＝0.724 ｆS ／ｆI ＝0.440ｆＳ ／｜ｆII｜＝2.349 ｆS ／ｆI-III ＝0.499 ｎ6 −ｎ5 ＝0.359 ｎ4 −ｎ5 ＝0.314
。[0052] Example 11 f = 5.15 ~ 17.58 ~ 60.00 F NO = 1.86 ~ 2.18 ~ 2.15 ω = 31.5 ° ~ 10.2 ° 3.0 ° r 1 = 48.4331 d 1 = 1.1000 n d1 = 1.84666 ν d1 = 23.78 r 2 = 26.7655 d 2 = 5.1000 n d2 = 1.56873 ν d2 = 63.16 r 3 = 17050.4298 d 3 = 0.1500 r 4 = 27.6169 d 4 = 3.7000 n d3 = 1.66672 ν d3 = 48.32 r 5 = 110.0610 d 5 = ( variable) r 6 = 108.2896 d 6 = 0.9000 n d4 = 1.80100 ν d4 = 34.97 r 7 = 6.9714 d 7 = 3.5000 r 8 = -14.0637 d 8 = 0.8000 n d5 = 1.48749 ν d5 = 70.20 r 9 = 9.4503 d 9 = 2.6000 n d6 = 1.84666 ν d6 = 23.78 r 10 = 39.3635 (aspherical) d 10 = (variable) r 11 = 20.9972 (aspherical) d 11 = 2.1000 n d7 = 1.58913 ν d7 = 61.18 r 12 = -86.8208 d 12 = 0.8000 r 13 = ∞ (stop) d 13 = (variable) r 14 = 11.1717 d 14 = 0.8000 n d8 = 1.84666 ν d8 = 23.78 r 15 = 7.4201 d 15 = 4.5000 n d9 = 1.58913 ν d9 = 61.18 r 16 = -20.1319 ( aspherical) d 16 = (variable) r 17 = 31.9 705 d 17 = 0.8000 n d10 = 1.80100 ν d10 = 34.97 r 18 = 7.8159 d 18 = 1.0000 r 19 = 11.0842 ( aspherical) d 19 = 2.1000 n d11 = 1.58913 ν d11 = 61.18 r 20 = 95.2442 d 20 = 2.0790 r 21 = ∞ d 21 = 6.3000 n d12 = 1.54771 ν d12 = 62.83 r 22 = ∞ d 22 = 0.4000 r 23 = 15.1381 ( aspherical) d 23 = 1.7000 n d13 = 1.49241 ν d13 = 57.66 r 24 = 495.7590 d 24 = 1.2100 r 25 = ∞ d 25 = 0.6000 n d14 = 1.48749 ν d14 = 70.20 r 26 = ∞ Aspheric surface 10th surface P = 1 A 4 = -0.15672 × 10 -4 A 6 = 0.16675 × 10 -6 A 8 = 0.11985 × 10 -7 A 10 = 0 11th surface P = 1 A 4 = -0.71017 × 10 -4 A 6 = 0.19429 × 10 -5 A 8 = -0.14798 × 10 -6 A 10 = 0.33691 × 10 -8 Surface 16 P = 1 A 4 = 0.11912 × 10 -3 A 6 = 0.56770 × 10 -5 A 8 = -0.40152 × 10 -6 A 10 = 0.82922 × 10 -8 Surface 19 P = 1 A 4 = -0.60065 × 10 -4 A 6 = 0.20930 × 10 -4 A 8 = -0.24113 × 10 -5 A 10 = 0.96736 × 10 -7 Surface 23 P = 1 A 4 = 0.35380 × 10 -3 A 6 = -0.52968 × 10 -4 A 8 = 0.48508 × 10 -5 A 10 = -0.16920 × 10 -6 β 5 = 1.222 f III / f I = 0.724 f S / f I = 0.440f S / | f II | = 2.349 f S / f I-III = 0.499 n 6 -n 5 = 0.359 n 4 -n 5 = 0.314
.
【００５３】上記実施例１〜１１の無限遠撮影時の広角
端（ａ）、標準状態（ｂ）、望遠端（ｃ）、及び、物体
距離１ｍでの撮影時の望遠端（ｄ）における球面収差、
非点収差、歪曲収差、倍率色収差を示す収差図をそれぞ
れ図１２〜図２２に示す。The spherical surfaces at the wide-angle end (a), the standard state (b), the telephoto end (c), and the telephoto end (d) at the time of shooting at an object distance of 1 m in Examples 1 to 11 at infinity shooting. aberration,
12 to 22 show aberration diagrams showing astigmatism, distortion, and chromatic aberration of magnification, respectively.
【００５４】[0054]
【発明の効果】以上の説明から明らかなように、本発明
の高変倍レンズによると、正の屈折力を有する第１群、
負の屈折力する第２群、正の屈折力を有する第３群、正
の屈折力を有する第４群で構成され、第２群を移動する
ことで変倍を行い、第４群で変倍や物点の移動に伴う焦
点移動を補正するように移動させる変倍レンズにおい
て、第２群の最も像側の面と第４群の最も物体側の面の
間に開口絞りを配置し、開口絞りと第３群を変倍時に物
体側に凸状のほぼ同様な形状の軌跡に沿って移動させる
ことで、前玉径を大きくせずに、焦点距離を広角側に延
長した高変倍比の変倍レンズを得ることができると同時
に、第３群の移動や高変倍比化に伴う第４群の移動量の
増大を緩和し、移動スペースを節約するために、負の屈
折力を有する第５群を付け加えて、第４群の移動量を少
なくし、節約した移動スペース分だけ全長を短くするこ
とができる。また、最も像側の群が負の屈折力を有する
ために、射出瞳が浅くなり、シェーディングの問題が発
生しやすいが、撮像素子の直前に正レンズを１枚付加す
ることによりこの問題は解決できる。As is apparent from the above description, according to the high-magnification lens of the present invention, the first lens unit having a positive refractive power,
The zoom lens is composed of a second group having a negative refractive power, a third group having a positive refractive power, and a fourth group having a positive refractive power. In a variable power lens that moves so as to correct the focal point shift accompanying the magnification and the movement of the object point, an aperture stop is arranged between the most image side surface of the second group and the most object side surface of the fourth group, By moving the aperture stop and the third lens unit along a locus similar in shape to the object side during zooming, the focal length is extended to the wide-angle side without increasing the front lens diameter. In addition to obtaining a variable power lens having the same ratio, the negative refractive power is used to reduce the movement of the third unit and the increase in the amount of movement of the fourth unit due to the increase in the zoom ratio, and to save the moving space. By adding the fifth group having the above, the moving amount of the fourth group can be reduced, and the total length can be shortened by the saved moving space. Also, since the group closest to the image side has a negative refractive power, the exit pupil becomes shallow and a problem of shading is likely to occur. However, this problem can be solved by adding one positive lens immediately before the image sensor. it can.
【００５５】最終的には、本発明によると、広角端画角
２ω＝６３°、変倍比１２倍、Ｆ値１．８（広角端）、
全長１５ｆW 、前玉径５．８ｆW と、超小型で高い仕様
でありながら、結像特性の良好な変倍レンズが得られ
る。Finally, according to the present invention, the wide-angle end angle of view 2ω = 63 °, the magnification ratio is 12 times, the F-number is 1.8 (wide-angle end),
Full length 15f W, and front lens diameter 5.8F W, yet high specification in a very small, good zoom lens of the imaging characteristics.
【図１】本発明の実施例１の高変倍レンズの広角端にお
ける断面図である。FIG. 1 is a sectional view of a high-power lens according to a first embodiment of the present invention at a wide-angle end.
【図２】実施例２の高変倍レンズの広角端における断面
図である。FIG. 2 is a cross-sectional view of a high-power lens according to a second embodiment at a wide-angle end.
【図３】実施例３の高変倍レンズの広角端における断面
図である。FIG. 3 is a cross-sectional view of a high-power lens according to a third embodiment at a wide-angle end.
【図４】実施例４の高変倍レンズの広角端における断面
図である。FIG. 4 is a cross-sectional view of the high-power lens according to Example 4 at the wide-angle end.
【図５】実施例５の高変倍レンズの広角端における断面
図である。FIG. 5 is a cross-sectional view at a wide-angle end of a high-power lens according to a fifth embodiment.
【図６】実施例６の高変倍レンズの広角端における断面
図である。FIG. 6 is a sectional view of a high-power lens according to a sixth embodiment at a wide-angle end.
【図７】実施例７の高変倍レンズの広角端における断面
図である。FIG. 7 is a sectional view of a high-power lens according to Example 7 at the wide-angle end.
【図８】実施例８の高変倍レンズの広角端における断面
図である。FIG. 8 is a cross-sectional view of the high-power lens according to Example 8 at the wide-angle end.
【図９】実施例９の高変倍レンズの広角端における断面
図である。FIG. 9 is a sectional view of a high-power lens according to a ninth embodiment at a wide-angle end.
【図１０】実施例１０の高変倍レンズの広角端における
断面図である。FIG. 10 is a sectional view of the high-power lens according to Example 10 at the wide-angle end.
【図１１】実施例１１の高変倍レンズの広角端における
断面図である。FIG. 11 is a sectional view of a high-power lens according to an eleventh embodiment at a wide-angle end.
【図１２ａ】実施例１の無限遠撮影時の広角端における
球面収差、非点収差、歪曲収差、倍率色収差を示す収差
図である。12A is an aberration diagram showing a spherical aberration, an astigmatism, a distortion, and a chromatic aberration of magnification at the wide-angle end in imaging at infinity in Example 1. FIG.
【図１２ｂ】実施例１の無限遠撮影時の標準状態におけ
る球面収差、非点収差、歪曲収差、倍率色収差を示す収
差図である。12B is an aberration diagram showing a spherical aberration, an astigmatism, a distortion, and a chromatic aberration of magnification in the standard state at the time of infinity shooting in Example 1. FIG.
【図１２ｃ】実施例１の望遠端における球面収差、非点
収差、歪曲収差、倍率色収差を示す収差図である。12C is an aberration diagram showing a spherical aberration, an astigmatism, a distortion, and a chromatic aberration of magnification at the telephoto end in Example 1. FIG.
【図１２ｄ】実施例１の物体距離１ｍでの撮影時の望遠
端における球面収差、非点収差、歪曲収差、倍率色収差
を示す収差図である。FIG. 12D is an aberration diagram showing a spherical aberration, an astigmatism, a distortion, and a chromatic aberration of magnification at the telephoto end in imaging at an object distance of 1 m in Example 1.
【図１３ａ】実施例２の図１２ａと同様な収差図であ
る。FIG. 13A is an aberration diagram similar to FIG. 12A of the second embodiment.
【図１３ｂ】実施例２の図１２ｂと同様な収差図であ
る。13b is an aberration diagram similar to FIG. 12b of Example 2. FIG.
【図１３ｃ】実施例２の図１２ｃと同様な収差図であ
る。FIG. 13C is an aberration diagram similar to FIG. 12C of the second embodiment.
【図１３ｄ】実施例２の図１２ｄと同様な収差図であ
る。FIG. 13D is an aberration diagram similar to FIG. 12D of the second embodiment.
【図１４ａ】実施例３の図１２ａと同様な収差図であ
る。FIG. 14A is an aberration diagram similar to FIG. 12A of the third embodiment.
【図１４ｂ】実施例３の図１２ｂと同様な収差図であ
る。FIG. 14B is an aberration diagram similar to FIG. 12B of the third embodiment.
【図１４ｃ】実施例３の図１２ｃと同様な収差図であ
る。FIG. 14C is an aberration diagram similar to FIG. 12C of the third embodiment.
【図１４ｄ】実施例３の図１２ｄと同様な収差図であ
る。FIG. 14D is an aberration diagram similar to FIG. 12D of the third embodiment.
【図１５ａ】実施例４の図１２ａと同様な収差図であ
る。FIG. 15a is an aberration diagram similar to FIG. 12a in Example 4.
【図１５ｂ】実施例４の図１２ｂと同様な収差図であ
る。FIG. 15b is an aberration diagram similar to FIG. 12b of the fourth embodiment.
【図１５ｃ】実施例４の図１２ｃと同様な収差図であ
る。FIG. 15c is an aberration diagram similar to FIG. 12c of the fourth embodiment.
【図１５ｄ】実施例４の図１２ｄと同様な収差図であ
る。FIG. 15d is an aberration diagram similar to FIG. 12d of Example 4.
【図１６ａ】実施例５の図１２ａと同様な収差図であ
る。FIG. 16a is an aberration diagram similar to FIG. 12a of the fifth embodiment.
【図１６ｂ】実施例５の図１２ｂと同様な収差図であ
る。16b is an aberration diagram similar to FIG. 12b of Example 5. FIG.
【図１６ｃ】実施例５の図１２ｃと同様な収差図であ
る。FIG. 16c is an aberration diagram similar to FIG. 12c of Example 5.
【図１６ｄ】実施例５の図１２ｄと同様な収差図であ
る。FIG. 16d is an aberration diagram similar to FIG. 12d of Example 5.
【図１７ａ】実施例６の図１２ａと同様な収差図であ
る。FIG. 17a is an aberration diagram similar to FIG. 12a in Example 6.
【図１７ｂ】実施例６の図１２ｂと同様な収差図であ
る。17b is an aberration diagram similar to FIG. 12b of Example 6. FIG.
【図１７ｃ】実施例６の図１２ｃと同様な収差図であ
る。FIG. 17C is an aberration diagram similar to FIG. 12C of the sixth embodiment.
【図１７ｄ】実施例６の図１２ｄと同様な収差図であ
る。FIG. 17D is an aberration diagram similar to FIG. 12D of the sixth embodiment.
【図１８ａ】実施例７の図１２ａと同様な収差図であ
る。18a is an aberration diagram similar to FIG. 12a of Example 7. FIG.
【図１８ｂ】実施例７の図１２ｂと同様な収差図であ
る。18b is an aberration diagram similar to FIG. 12b of Example 7. FIG.
【図１８ｃ】実施例７の図１２ｃと同様な収差図であ
る。FIG. 18c is an aberration diagram similar to FIG. 12c of the seventh embodiment.
【図１８ｄ】実施例７の図１２ｄと同様な収差図であ
る。FIG. 18D is an aberration diagram similar to FIG. 12D of the seventh embodiment.
【図１９ａ】実施例８の図１２ａと同様な収差図であ
る。FIG. 19a is an aberration diagram similar to FIG. 12a in Example 8.
【図１９ｂ】実施例８の図１２ｂと同様な収差図であ
る。19b is an aberration diagram similar to FIG. 12b of Example 8. FIG.
【図１９ｃ】実施例８の図１２ｃと同様な収差図であ
る。FIG. 19c is an aberration diagram similar to FIG. 12c of Example 8.
【図１９ｄ】実施例８の図１２ｄと同様な収差図であ
る。FIG. 19d is an aberration diagram similar to FIG. 12d of Example 8.
【図２０ａ】実施例９の図１２ａと同様な収差図であ
る。FIG. 20a is an aberration diagram similar to FIG. 12a in Example 9.
【図２０ｂ】実施例９の図１２ｂと同様な収差図であ
る。20b is an aberration diagram similar to FIG. 12b in Example 9. FIG.
【図２０ｃ】実施例９の図１２ｃと同様な収差図であ
る。FIG. 20c is an aberration diagram similar to FIG. 12c of the ninth embodiment.
【図２０ｄ】実施例９の図１２ｄと同様な収差図であ
る。FIG. 20d is an aberration diagram similar to FIG. 12d of the ninth embodiment.
【図２１ａ】実施例１０の図１２ａと同様な収差図であ
る。FIG. 21a is an aberration diagram similar to FIG. 12a in Example 10.
【図２１ｂ】実施例１０の図１２ｂと同様な収差図であ
る。21b is an aberration diagram similar to FIG. 12b of Example 10. FIG.
【図２１ｃ】実施例１０の図１２ｃと同様な収差図であ
る。FIG. 21c is an aberration diagram similar to FIG. 12c of the tenth embodiment.
【図２１ｄ】実施例１０の図１２ｄと同様な収差図であ
る。FIG. 21d is an aberration diagram similar to FIG. 12d of the tenth embodiment.
【図２２ａ】実施例１１の図１２ａと同様な収差図であ
る。FIG. 22a is an aberration diagram similar to FIG. 12a of Example 11.
【図２２ｂ】実施例１１の図１２ｂと同様な収差図であ
る。22b is an aberration diagram similar to FIG. 12b of Example 11. FIG.
【図２２ｃ】実施例１１の図１２ｃと同様な収差図であ
る。FIG. 22c is an aberration diagram similar to FIG. 12c of the eleventh embodiment.
【図２２ｄ】実施例１１の図１２ｄと同様な収差図であ
る。FIG. 22d is an aberration diagram similar to FIG. 12d of Example 11.
Ｇ１…第１群 Ｇ２…第２群 Ｇ３…第３群 Ｇ４…第４群 Ｇ５…第５群 G1 first group G2 second group G3 third group G4 fourth group G5 fifth group
Claims (6)
１群、負の屈折力を有し、変倍時可動の第２群、正の屈
折力を有し、広角端から望遠端へ変倍する際、物体側に
凸状の軌跡に沿って可動の第３群、正の屈折力を有し、
変倍時及び物点位置の変化によるピント移動を補正する
ように移動可能な第４群、負の屈折力を有し、常時固定
の第５群から構成されると共に、前記第２群の最も像側
の面と前記第４群の最も物体側の面の間に開口絞りを有
し、かつ、前記開口絞りが、広角端から望遠端へ変倍す
る際に物体側に凸状の軌跡に沿って移動し、常時以下の
条件を満足することを特徴とする高変倍レンズ： （１）１．０＜β5 ＜２．０ ここで、β5 は第５群の横倍率である。1. A first lens unit having a positive refractive power, a second lens unit having a negative refractive power and movable at the time of zooming, and a positive refractive power, from the wide-angle end to the telephoto end in order from the object side. When zooming to the third group, having a positive refractive power, movable along a locus convex toward the object side,
The fourth group, which is movable so as to correct the focus movement at the time of zooming and the change of the object point position, has a negative refractive power and is always composed of a fifth group which is always fixed. An aperture stop is provided between an image-side surface and a surface of the fourth group closest to the object, and the aperture stop changes magnification from a wide-angle end to a telephoto end.
A high-magnification lens characterized by moving along a locus convex toward the object side and always satisfying the following condition: (1) 1.0 <β 5 <2.0 where β 5 is the lateral magnification of the fifth group.
前記第５群が、像面の直前に配された正レンズを有する
ことを特徴とする高変倍レンズ。2. The high-magnification lens according to claim 1,
A high-magnification lens, wherein the fifth unit has a positive lens disposed immediately before an image plane.
以下の条件（２）を満足することを特徴とする高変倍レ
ンズ： （２）０．２５＜ｆ III ／ｆ I ＜１．３ ただし、ｆ I は第１群、ｆ III は第３群の焦点距離であ
る。 3. The high-magnification lens according to claim 1,
A high zoom ratio characterized by satisfying the following condition (2):
Lens: (2) 0.25 <f III / f I <1.3 However, f I first group, f III is the focal length der of the third group
You.
以下の条件（３）を満足することを特徴とする高変倍レ
ンズ： （３）０．２５＜ｆS ／ｆI ＜０．９ ただし、ｆS は、広角端での全系の焦点距離をｆW 、望
遠端での焦点距離をｆTとする時、ｆS ＝（ｆW ・
ｆT ）1/2 で与えられ、ｆI は第１群の焦点距離であ
る。4. The high-magnification lens according to claim 1 ,
High magnification lens and satisfies the following condition (3): (3) 0.25 <f S / f I <0.9 However, f S is the focal length of the entire system at the wide-angle end Is f W and the focal length at the telephoto end is f T , f S = (f W ·
f T ) 1/2, where f I is the focal length of the first group.
以下の条件（４）を満足することを特徴とする高変倍レ
ンズ： （４）１．２＜ｆS ／｜ｆII｜＜４．０ ただし、ｆS は、広角端での全系の焦点距離をｆW 、望
遠端での焦点距離をｆTとする時、ｆS ＝（ｆW ・
ｆT ）1/2 で与えられ、ｆIIは第２群の焦点距離であ
る。5. The high-magnification lens according to claim 1 ,
A high-magnification lens characterized by satisfying the following condition (4): (4) 1.2 <f S / | f II | <4.0 where f S is the value of the entire system at the wide-angle end. When the focal length is f W and the focal length at the telephoto end is f T , f S = (f W ·
f T ) 1/2, where f II is the focal length of the second group.
以下の条件（５）を満足することを特徴とする高変倍レ
ンズ： （５）ｆS ／｜ｆI-III ｜＜０．７ ただし、ｆS は、広角端での全系の焦点距離をｆW 、望
遠端での焦点距離をｆTとする時、ｆS ＝（ｆW ・
ｆT ）1/2 で与えられ、ｆI-III は全系の焦点距離がｆ
S 時の第１群から第３群までの合成の焦点距離である。6. The high-magnification lens according to claim 1 , wherein
A high zoom lens characterized by satisfying the following condition (5): (5) f S / | f I-III | <0.7 where f S is the focal length of the entire system at the wide-angle end. Is f W and the focal length at the telephoto end is f T , f S = (f W ·
f T ) 1/2 , and f I-III is the focal length of the entire system
It is the focal length of the combination of the first to third groups at S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9435792A JP3288422B2 (en) | 1992-04-14 | 1992-04-14 | High zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9435792A JP3288422B2 (en) | 1992-04-14 | 1992-04-14 | High zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06109976A JPH06109976A (en) | 1994-04-22 |
| JP3288422B2 true JP3288422B2 (en) | 2002-06-04 |
Family
ID=14108045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9435792A Expired - Fee Related JP3288422B2 (en) | 1992-04-14 | 1992-04-14 | High zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3288422B2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4059228B2 (en) * | 2004-06-14 | 2008-03-12 | ソニー株式会社 | Zoom lens and imaging device |
| JP4823684B2 (en) * | 2005-12-28 | 2011-11-24 | 株式会社タムロン | Zoom lens |
| JP5049751B2 (en) * | 2007-11-21 | 2012-10-17 | 富士フイルム株式会社 | High magnification zoom lens and imaging device |
| JP5049752B2 (en) * | 2007-11-21 | 2012-10-17 | 富士フイルム株式会社 | High magnification zoom lens and imaging device |
| JP5804878B2 (en) * | 2010-11-01 | 2015-11-04 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| JPWO2012081251A1 (en) * | 2010-12-16 | 2014-05-22 | 富士フイルム株式会社 | Projection zoom lens and projection device |
| JP6323742B2 (en) * | 2013-12-06 | 2018-05-16 | コニカミノルタ株式会社 | Zoom lens, lens unit, and imaging apparatus |
| JP6173279B2 (en) | 2014-08-28 | 2017-08-02 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| JP6415278B2 (en) * | 2014-11-28 | 2018-10-31 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| JP6646244B2 (en) * | 2015-03-18 | 2020-02-14 | キヤノン株式会社 | Zoom lens and imaging device |
| JP7217935B2 (en) * | 2018-12-25 | 2023-02-06 | 株式会社シグマ | Variable magnification imaging optical system |
-
1992
- 1992-04-14 JP JP9435792A patent/JP3288422B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06109976A (en) | 1994-04-22 |
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