CN114721128B - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
CN114721128B
CN114721128B CN202210463271.5A CN202210463271A CN114721128B CN 114721128 B CN114721128 B CN 114721128B CN 202210463271 A CN202210463271 A CN 202210463271A CN 114721128 B CN114721128 B CN 114721128B
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lens
optical axis
optical
optical imaging
image
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CN114721128A (en
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周雨
宁宁
戴付建
赵烈烽
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

The application discloses an optical imaging lens, which sequentially comprises the following components from an object side to an image side along an optical axis: a first lens having positive optical power, the object side of which is convex; a second lens having negative optical power; a third lens having positive optical power; a fourth lens with negative focal power, the object side surface of which is concave; a fifth lens having optical power; a sixth lens having positive optical power; a seventh lens having negative optical power; an eighth lens having negative optical power; wherein the number of lenses having optical power in the optical imaging lens is eight; half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies the following conditions: imgH > 8.0mm.

Description

Optical imaging lens
Technical Field
The application relates to the field of optical elements, in particular to an optical imaging lens.
Background
In recent years, with the vigorous development of the field of smart phones, the imaging lens of the mobile phone is increasingly developed towards a large image plane, a large aperture and ultra-thinning, wherein the large image plane means higher resolution, the large aperture represents more effective luminous flux and higher signal to noise ratio, and the ultra-thinning means better compatibility with the smart phone and is convenient to carry. Based on these challenges presented by mobile phone suppliers, the six-piece or seven-piece lens structure is insufficient to effectively address these challenges, and eight-piece optical imaging lens systems will gradually become the mainstream. In order to meet the application requirements of a main camera on a high-end smart phone in the future, designing an eight-piece optical imaging lens with a large image plane, a large aperture and ultra-thin structure becomes one of the main research and development hot spots in the field of current lenses.
Disclosure of Invention
The present application provides an optical imaging lens comprising, in order from an object side to an image side along an optical axis: a first lens having positive optical power, the object side of which is convex; a second lens having negative optical power; a third lens having positive optical power; a fourth lens with negative focal power, the object side surface of which is concave; a fifth lens having optical power; a sixth lens having positive optical power; a seventh lens having negative optical power; an eighth lens having negative optical power; wherein the number of lenses having optical power in the optical imaging lens is eight; half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens satisfies: imgH > 8.0mm.
In one embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD < 2.0.
In one embodiment, the effective focal length f4 of the fourth lens, the air interval T45 of the fourth lens and the fifth lens on the optical axis, the center thickness CT4 of the fourth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis, and the curvature radius R10 of the image side surface of the fifth lens satisfy: f4×T45/(R10×CT4—R10×CT5) < 26.5.
In one embodiment, a distance TTL between a half of a diagonal line length of the effective pixel area on the imaging surface of the optical imaging lens and the object side surface of the first lens to the imaging surface on the optical axis satisfies: TTL/ImgH < 1.1.
In one embodiment, the center thickness CT3 of the third lens on the optical axis, the center thickness CT4 of the fourth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis, the air interval T34 of the third lens and the fourth lens on the optical axis, and the air interval T45 of the fourth lens and the fifth lens on the optical axis satisfy: -9.0 < (CT 3 xT 45-CT4 xCT 4)/(CT 4 xT 34-CT5 xT 34) < -2.5.
In one embodiment, the center thickness CT5 of the fifth lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, the air interval T56 of the fifth lens and the sixth lens on the optical axis, and the air interval T67 of the sixth lens and the seventh lens on the optical axis satisfy: -1.5 < (CT 5 XCT 6-CT5 XCT 7-CT6 XCT 6+ CT6 XCT 7)/(T56 XT 67) < 0.
In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the effective focal length f of the optical imaging lens satisfy: -5.0 < R7/f < -3.5.
In one embodiment, the radius of curvature R9 of the object side surface of the fifth lens, the radius of curvature R10 of the image side surface of the fifth lens, and the distance TD between the object side surface of the first lens and the image side surface of the eighth lens on the optical axis satisfy: 2.5 < (R9+R10)/TD < 3.5.
In one embodiment, a sum Σat of air intervals on the optical axis between any adjacent two lenses of the first to eighth lenses, a sum Σct of center thicknesses on the optical axis of the first to eighth lenses, a center thickness CT7 on the optical axis of the seventh lens, a center thickness CT8 on the optical axis of the eighth lens, an air interval T78 on the optical axis of the seventh and eighth lenses, and a radius of curvature R11 of the object side surface of the sixth lens satisfy: r11 x T78/(. Sigma.CT x CT 7. Sigma.CT x CT 8. Sigma.AT x CT 7+. Sigma.AT x CT 8). Times.0.1 > 14.0.
In one embodiment, the effective focal length f6 of the sixth lens, the effective focal length f8 of the eighth lens, and the radius of curvature R11 of the object-side surface of the sixth lens satisfy: -1.5 < (f 6-f 8)/R11 < 0.5.
In one embodiment, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, the center thickness CT3 of the third lens on the optical axis, the air interval T12 of the first lens and the second lens on the optical axis, and the air interval T23 of the second lens and the third lens on the optical axis satisfy: -5.0 < (CT 1X CT2-CT 1X CT3-CT 2X CT2+ CT 2X CT 3)/(T12X T23) < -3.0.
The application provides the eight-piece type optical imaging lens with at least one of large image surface, large aperture, ultra-thin performance, good processing characteristics and the like through reasonably distributing the focal power and optimizing the optical parameters, and can better meet the application requirements of the main camera on the future high-end smart phone.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
Fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 shows a schematic configuration diagram of an optical imaging lens according to embodiment 5 of the present application; and
Fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 5.
Detailed Description
For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the application and is not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, then the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens having optical power. Any two adjacent lenses from the first lens to the eighth lens can have a spacing distance therebetween.
In an exemplary embodiment, the first lens may have positive optical power, with an object side surface being convex; the second lens may have negative optical power; the third lens may have positive optical power; the fourth lens can have negative focal power, and the object side surface of the fourth lens is concave; the fifth lens may have positive or negative optical power; the sixth lens may have positive optical power; the seventh lens may have negative optical power; the eighth lens may have negative optical power. The positive and negative focal power of each lens of the optical imaging lens is reasonably distributed, so that the low-order aberration of the optical imaging lens can be effectively balanced and controlled, the sensitivity of tolerance can be reduced, the miniaturization of the optical imaging lens is maintained, and meanwhile, the limited space is reasonably utilized, so that the optical imaging lens can meet the requirement of a large image plane.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 12.5 < f4×T45/(R10×CT4-R10×CT5) < 26.5, where f4 is the effective focal length of the fourth lens, T45 is the air gap on the optical axis between the fourth lens and the fifth lens, CT4 is the center thickness on the optical axis of the fourth lens, CT5 is the center thickness on the optical axis of the fifth lens, and R10 is the radius of curvature of the image side surface of the fifth lens. More specifically, f4, T45, R10, CT4, and CT5 may further satisfy: F4×T45/(R10×CT4—R10×CT5) < 26.19, 12.78. Satisfies the condition that f4×T45/(R10× CT4-R10× CT5) < 26.5, is favorable for correcting aberration, obtains good imaging quality, and realizes the efficacy of high resolution.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: f/EPD < 2.0, where f is the effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. The F/EPD is smaller than 2.0, which is favorable for reducing the F number of the optical imaging lens, increasing the aperture, increasing the light incoming quantity, enhancing the imaging effect in dark environment and simultaneously reducing the aberration of the marginal view field.
In an exemplary embodiment, the optical imaging lens according to the present application further includes a diaphragm disposed between the object side and the first lens.
In an exemplary embodiment, half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens satisfies: imgH is more than 8.0mm, which is beneficial to realizing the characteristic of large image plane.
In an exemplary embodiment, a distance TTL between a half of a diagonal length ImgH of an effective pixel region on an imaging surface of the optical imaging lens and an object side surface of the first lens to the imaging surface on the optical axis satisfies: TTL/ImgH is smaller than 1.1, which is beneficial to ensuring that the optical imaging lens is as small as possible and realizing an ultrathin structure.
In one embodiment, the distance TTL on the optical axis from the object side surface to the imaging surface of the first lens may be, for example, in the range of 8.88mm to 8.91 mm.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -9.0 < (CT 3×t45-CT4×ct 4)/(CT 4×t34-CT5×t34) < -2.5, wherein CT3 is the center thickness of the third lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, CT5 is the center thickness of the fifth lens on the optical axis, T34 is the air space of the third lens and the fourth lens on the optical axis, and T45 is the air space of the fourth lens and the fifth lens on the optical axis. More specifically, CT3, T45, CT4, T34, CT5, and T34 may further satisfy: -8.37 < (CT 3 xT 45-CT4 xCT 4)/(CT 4 xT 34-CT5 xT 34) < -3.68. Meets the condition that-9.0 < (CT 3 xT 45-CT4 xCT 4)/(CT 4 xT 34-CT5 xT 34) < -2.5, and is beneficial to realizing the miniaturization and the ultra-thin of the optical imaging lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -1.5 < (CT 5 x CT6-CT5 x CT7-CT6 x CT6+ CT6 x CT 7)/(T56 x T67) < 0, wherein CT5 is the center thickness of the fifth lens on the optical axis, CT6 is the center thickness of the sixth lens on the optical axis, CT7 is the center thickness of the seventh lens on the optical axis, T56 is the air space of the fifth lens and the sixth lens on the optical axis, and T67 is the air space of the sixth lens and the seventh lens on the optical axis. More specifically, CT5, CT6, CT7, T56, and T67 may further satisfy: -1.16 < (CT 5 XCT 6-CT5 XCT 7-CT6 XCT 6+ CT6 XCT 7)/(T56 XT 67) < -0.31. Meets the condition that-1.5 < (CT 5X CT6-CT 5X CT7-CT 6X CT6+ CT 6X CT 7)/(T56X T67) < 0, and is beneficial to improving the lens processability of the optical imaging lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -5.0 < R7/f < -3.5, wherein R7 is the radius of curvature of the object side of the fourth lens and f is the effective focal length of the optical imaging lens. More specifically, R7 and f may further satisfy: -4.74 < R7/f < -3.56. Satisfies R7/f < -3.5 which is less than-5.0, is favorable for reducing the on-axis chromatic aberration of the optical imaging lens and improves the imaging quality of the lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2.5 < (R9+R10)/TD < 3.5, wherein R9 is the radius of curvature of the object-side surface of the fifth lens element, R10 is the radius of curvature of the image-side surface of the fifth lens element, and TD is the distance on the optical axis between the object-side surface of the first lens element and the image-side surface of the eighth lens element. More specifically, R9, R10, and TD may further satisfy: 2.52 < (R9+R10)/TD < 3.10. Satisfies 2.5 < (R9+R10)/TD < 3.5, is favorable for reducing the on-axis chromatic aberration of the optical imaging lens and improves the imaging quality of the lens.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: R11xT 78/(ΣCTxCT7- ΣCTxCT 7- ΣAT x CT7+ ΣATx CT 8). Times.0.1 > 14.0, wherein ΣAT is the sum of the air intervals on the optical axis between any adjacent two lenses of the first lens to the eighth lens, ΣCT is the sum of the center thicknesses on the optical axis of the first lens to the eighth lens, CT7 is the center thickness on the optical axis of the seventh lens, CT8 is the center thickness on the optical axis of the eighth lens, T78 is the air interval on the optical axis of the seventh lens and the eighth lens, and R11 is the radius of curvature of the object side face of the sixth lens. More specifically, R11, T78, Σct, CT7, CT8, and Σat may further satisfy: r11 x T78/(. Sigma.CT x CT 7. Sigma.CT x CT 8. Sigma.AT x CT 7+. Sigma.AT x CT 8). Times.0.1 > 14.02. Meets R11 xT 78/(ΣCTxCT7- ΣCTxCT 8- ΣAT xCT7+ ΣATxCT 8) x 0.1 > 14.0, is beneficial to reasonably distributing the space of each lens and is easy to realize an ultrathin structure.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -1.5 < (f 6-f 8)/R11 < 0.5, wherein f6 is the effective focal length of the sixth lens, f8 is the effective focal length of the eighth lens, and R11 is the radius of curvature of the object-side surface of the sixth lens. More specifically, f6, f8, and R11 further satisfy: -1.14 < (f 6-f 8)/R11 < -0.60. Satisfies-1.5 < (f 6-f 8)/R11 < 0.5, is favorable for reducing the optical distortion and ensures better imaging quality.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -5.0 < (CT 1 xct2-CT 1 xct3-CT 2 xct2+ct2 xct3)/(T12 x T23) < -3.0, wherein CT1 is the central thickness of the first lens on the optical axis, CT2 is the central thickness of the second lens on the optical axis, CT3 is the central thickness of the third lens on the optical axis, T12 is the air space of the first lens and the second lens on the optical axis, and T23 is the air space of the second lens and the third lens on the optical axis. More specifically, CT1, CT2, CT3, T12, and T23 may further satisfy: -4.78 < (CT 1X CT2-CT 1X CT3-CT 2X CT2+ CT 2X CT 3)/(T12X T23) < -3.15. Meets the condition that-5.0 < (CT 1X CT2-CT 1X CT3-CT 2X CT2+ CT 2X CT 3)/(T12X T23) < -3.0, is beneficial to reducing the optical distortion and ensures better imaging quality.
In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: the Semi-FOV is more than 46 degrees, wherein the Semi-FOV is half of the maximum field angle of the optical imaging lens. More specifically, the Semi-FOV may be, for example, in the range of 46.7 ° to 47.1 °, which is advantageous for achieving characteristics such as a large image plane.
In an exemplary embodiment, the effective focal length f of the optical imaging lens may be, for example, in the range of 7.65mm to 7.76mm, the effective focal length f1 of the first lens may be, for example, in the range of 9.37mm to 9.74mm, the effective focal length f2 of the second lens may be, for example, in the range of-31.78 mm to-30.40 mm, the effective focal length f3 of the third lens may be, for example, in the range of 15.86mm to 17.67mm, the effective focal length f4 of the fourth lens may be, for example, in the range of-60.27 mm to-40.61 mm, the effective focal length f5 of the fifth lens may be, for example, in the range of-144.16 mm to 508.70mm, the effective focal length f6 of the sixth lens may be, for example, in the range of 6.18mm to 9.80mm, the effective focal length f7 of the seventh lens may be, for example, in the range of-58.44 mm to-12.10 mm, and the effective focal length f8 of the eighth lens may be, for example, in the range of-56.56 to-5.55 mm.
In an exemplary embodiment, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface. The application provides an optical imaging lens with the characteristics of miniaturization, large image surface, large aperture, high imaging quality and the like. The optical imaging lens according to the above embodiment of the present application may employ a plurality of lenses, for example, the above eight lenses. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, incident light rays can be effectively converged, the optical total length of the imaging lens is reduced, and the processability of the imaging lens is improved, so that the optical imaging lens is more beneficial to production and processing.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface of the first lens to the image side surface of the eighth lens is an aspherical mirror. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, at least one of an object side surface and an image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens are aspherical mirror surfaces.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens includes, in order from an object side to an image side, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, and has a concave object-side surface S15 and a concave image-side surface S16. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
Table 1 shows the basic parameter table of the optical imaging lens of embodiment 1, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm).
TABLE 1
In this example, the effective focal length f of the optical imaging lens is 7.69mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S19 of the optical imaging lens) is 8.90mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 8.42mm, and half of the maximum field angle Semi-FOV of the optical imaging lens is 47.0 °.
In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
Wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the aspherical i-th order. The higher order coefficients A4、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28 and A 30 that can be used for each of the aspherical mirror faces S1-S16 in example 1 are given in tables 2-1 and 2-2.
Face number A4 A6 A8 A10 A12 A14 A16
S1 3.0689E-02 1.2720E-03 -1.7992E-03 -1.0249E-03 -4.4984E-04 -1.4823E-04 -6.0040E-05
S2 6.5621E-03 2.9335E-03 1.3797E-03 5.3974E-04 1.3260E-04 -4.4589E-05 -6.1458E-05
S3 -6.8570E-02 2.0959E-02 3.7884E-03 7.3879E-04 2.7095E-04 -1.6299E-05 -4.4404E-05
S4 -1.3452E-02 1.3150E-02 2.2071E-03 7.9373E-05 1.6488E-04 4.1831E-05 4.8844E-06
S5 5.1840E-02 8.0960E-04 1.7008E-03 3.5729E-04 2.6734E-04 1.2344E-04 5.1975E-05
S6 -1.6211E-02 -4.0160E-03 -3.5556E-04 1.5533E-04 1.5663E-04 1.0469E-04 5.5846E-05
S7 -2.7907E-01 -2.5214E-02 -4.0370E-03 -3.6984E-04 -2.0545E-04 3.8245E-05 -8.2181E-06
S8 -3.3186E-01 4.7523E-03 8.8817E-03 5.2336E-03 1.4027E-03 6.0833E-04 9.8844E-05
S9 -7.7005E-01 9.5928E-03 -1.1268E-02 3.7951E-03 -1.6036E-04 9.0588E-04 7.5230E-04
S10 -1.1285E+00 1.1540E-01 1.9398E-02 2.8866E-03 -7.8773E-03 -2.2884E-03 2.7756E-04
S11 -6.2978E-01 -2.5978E-01 1.4972E-01 3.4825E-02 -7.7564E-04 -8.5372E-03 -4.8390E-03
S12 1.3681E+00 -1.3311E-01 1.9315E-01 -4.0913E-02 2.3107E-02 9.3204E-03 5.3835E-03
S13 -5.0607E+00 3.3873E-01 9.4990E-02 -9.8245E-02 -4.3313E-03 -1.9269E-02 -8.5694E-03
S14 -5.0008E+00 7.8132E-01 4.1170E-02 -2.4840E-02 1.8025E-02 3.6670E-03 -8.5402E-03
S15 1.1603E-01 1.1667E+00 -7.4506E-01 3.1721E-01 -8.4718E-02 -1.0139E-02 1.8825E-02
S16 -6.7551E+00 1.3377E+00 -4.1672E-01 2.3758E-01 -9.4183E-02 2.9875E-03 -9.9073E-03
TABLE 2-1
TABLE 2-2
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens provided in embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic configuration of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens includes, in order from an object side to an image side, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, and has a concave object-side surface S15 and a concave image-side surface S16. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
In this example, the effective focal length f of the optical imaging lens is 7.66mm, the total length TTL of the optical imaging lens is 8.89mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 8.42mm, and half of the maximum field angle Semi-FOV of the optical imaging lens is 46.9 °.
Table 3 shows the basic parameter table of the optical imaging lens of embodiment 2, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 4-1 and 4-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 3 Table 3
Face number A4 A6 A8 A10 A12 A14 A16
S1 3.3616E-02 1.8808E-03 -1.5603E-03 -1.1275E-03 -5.0339E-04 -2.1709E-04 -7.3183E-05
S2 9.4833E-03 4.5433E-03 1.2261E-03 2.2087E-04 -9.2143E-05 -1.3245E-04 -9.4178E-05
S3 -6.7260E-02 2.2324E-02 3.4767E-03 5.4959E-04 1.3671E-04 -5.0653E-05 -5.2457E-05
S4 -1.5339E-02 1.2153E-02 1.8688E-03 5.8347E-05 8.5127E-05 1.1516E-05 6.2287E-06
S5 5.0051E-02 -2.2870E-04 1.5893E-03 4.8836E-04 2.1687E-04 9.9331E-05 4.0039E-05
S6 -1.4726E-02 -3.4076E-03 -3.0624E-04 2.6742E-04 1.2915E-04 9.3313E-05 3.4206E-05
S7 -2.6427E-01 -2.3550E-02 -4.2671E-03 -6.0240E-04 -2.2097E-04 -4.2922E-05 1.6834E-06
S8 -3.2791E-01 3.4010E-03 5.7003E-03 4.3422E-03 1.1489E-03 5.9374E-04 1.5795E-04
S9 -7.3522E-01 9.7034E-03 -1.2238E-02 3.7212E-03 -2.8282E-04 1.0306E-03 6.6465E-04
S10 -1.0259E+00 9.5235E-02 1.8715E-02 5.4615E-03 -4.8951E-03 -1.6113E-03 4.6949E-05
S11 -5.7627E-01 -2.6081E-01 1.3595E-01 3.4457E-02 4.1145E-03 -5.7729E-03 -5.0582E-03
S12 1.3295E+00 -1.3945E-01 1.8671E-01 -4.4347E-02 2.0344E-02 6.8512E-03 3.4114E-03
S13 -4.6654E+00 2.9241E-01 1.1959E-01 -7.0426E-02 8.0264E-03 -8.7258E-03 -5.9797E-03
S14 -4.8565E+00 7.2025E-01 3.7468E-02 -2.4085E-02 1.7180E-02 6.5323E-03 -5.9161E-03
S15 -5.0158E-02 1.1707E+00 -6.9951E-01 2.8075E-01 -6.2682E-02 -1.5690E-02 1.5442E-02
S16 -6.8676E+00 1.3861E+00 -4.2175E-01 2.3801E-01 -1.0602E-01 3.9118E-03 -9.8500E-03
TABLE 4-1
TABLE 4-2
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens provided in embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic configuration diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens includes, in order from an object side to an image side, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, and has a concave object-side surface S15 and a concave image-side surface S16. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
In this example, the effective focal length f of the optical imaging lens is 7.69mm, the total length TTL of the optical imaging lens is 8.90mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 8.42mm, and half the maximum field angle Semi-FOV of the optical imaging lens is 46.9 °.
Table 5 shows the basic parameter table of the optical imaging lens of embodiment 3, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 6-1 and 6-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 5
Face number A4 A6 A8 A10 A12 A14 A16
S1 3.0265E-02 1.3391E-03 -1.6617E-03 -9.9548E-04 -4.2864E-04 -1.5193E-04 -5.6223E-05
S2 6.9366E-03 3.6174E-03 1.3251E-03 5.1311E-04 9.9215E-05 -3.8408E-05 -6.5198E-05
S3 -6.8459E-02 2.0542E-02 3.5836E-03 6.8953E-04 2.3971E-04 -2.0146E-05 -3.8193E-05
S4 -1.4095E-02 1.2324E-02 2.0743E-03 1.4553E-04 1.4233E-04 2.2937E-05 1.7037E-07
S5 5.1510E-02 7.9671E-04 1.7136E-03 5.1178E-04 2.5428E-04 1.0938E-04 3.2279E-05
S6 -1.7002E-02 -3.9812E-03 -2.9569E-04 2.0599E-04 1.6716E-04 9.4835E-05 4.6957E-05
S7 -2.7715E-01 -2.5046E-02 -4.0323E-03 -3.5804E-04 -1.8083E-04 3.1208E-05 -1.4040E-05
S8 -3.3012E-01 4.4887E-03 8.5691E-03 5.1020E-03 1.3907E-03 5.9970E-04 1.1888E-04
S9 -7.6492E-01 9.2482E-03 -1.1029E-02 3.6228E-03 -2.8976E-04 8.1988E-04 6.9739E-04
S10 -1.1367E+00 1.1948E-01 2.0060E-02 2.8420E-03 -7.8790E-03 -1.5707E-03 8.2013E-04
S11 -6.8997E-01 -2.3119E-01 1.8674E-01 3.6992E-02 -6.7245E-03 -1.1183E-02 -3.9684E-03
S12 1.4164E+00 -1.2366E-01 2.0374E-01 -3.7508E-02 2.7413E-02 1.0848E-02 5.9683E-03
S13 -4.8196E+00 3.1283E-01 1.1180E-01 -7.8581E-02 4.5840E-03 -1.2788E-02 -6.9478E-03
S14 -4.9023E+00 7.4022E-01 4.0324E-02 -2.4513E-02 1.7457E-02 5.8510E-03 -6.8910E-03
S15 -8.1062E-02 1.1647E+00 -6.9476E-01 2.7700E-01 -5.9335E-02 -1.6042E-02 1.4782E-02
S16 -6.7875E+00 1.3425E+00 -4.1529E-01 2.3870E-01 -9.7180E-02 3.0233E-03 -9.4941E-03
TABLE 6-1
TABLE 6-2
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens provided in embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens includes, in order from an object side to an image side, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, and has a concave object-side surface S15 and a concave image-side surface S16. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
In this example, the effective focal length f of the optical imaging lens is 7.75mm, the total length TTL of the optical imaging lens is 8.90mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 8.42mm, and half the maximum field angle Semi-FOV of the optical imaging lens is 46.8 °.
Table 7 shows a basic parameter table of the optical imaging lens of example 4, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 8-1 and 8-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 7
TABLE 8-1
Face number A18 A20 A22 A24 A26 A28 A30
S1 -1.2591E-05 -1.2402E-05 -2.2121E-06 -4.7166E-06 9.0080E-07 -3.0080E-06 2.2105E-06
S2 -2.3851E-05 -1.2094E-05 -3.9534E-06 -1.1159E-06 2.3418E-06 1.6275E-06 1.1752E-06
S3 -1.4994E-05 -6.9938E-06 -2.2437E-06 2.9655E-07 2.6664E-06 2.3993E-06 1.1718E-06
S4 -3.3265E-05 -1.1993E-05 -4.4981E-06 -4.9468E-07 -4.7888E-07 7.0607E-07 1.0766E-06
S5 -3.3527E-05 -1.5566E-05 -6.3400E-06 -3.4232E-06 -1.1999E-06 -3.5163E-06 -2.4421E-06
S6 -5.9936E-05 -4.7785E-05 -1.8606E-05 -1.3841E-05 -1.3854E-06 -1.0902E-06 3.4220E-06
S7 -7.8390E-05 -6.0298E-05 -3.0787E-05 -2.1719E-05 -1.1278E-05 -5.5328E-06 -3.0913E-07
S8 2.2924E-04 5.4792E-05 1.7092E-06 -1.2887E-05 -2.1487E-05 -1.5802E-05 -1.2095E-05
S9 1.0823E-03 4.6900E-04 2.5467E-04 5.3063E-05 -1.2996E-05 -2.0366E-05 -2.2589E-05
S10 -8.4201E-04 -9.9124E-05 6.2803E-04 1.4126E-04 5.4734E-05 -3.6014E-05 -1.2385E-05
S11 2.7288E-03 2.7181E-03 2.5527E-03 -7.8116E-04 -3.2742E-04 -2.8376E-04 1.0844E-04
S12 -3.5529E-03 -2.3500E-03 -2.0674E-03 -8.0442E-04 7.7060E-05 1.4647E-04 1.3809E-04
S13 -1.6566E-02 6.0380E-03 -1.6494E-04 -2.1316E-04 -2.4469E-04 4.1070E-04 -2.7455E-04
S14 1.4136E-03 8.1647E-04 -1.3757E-03 -2.0429E-03 -1.4965E-04 5.7594E-05 3.2054E-04
S15 -5.5978E-03 -1.3716E-03 2.7360E-03 -1.1678E-03 2.9898E-04 8.7979E-05 -2.7578E-05
S16 9.9383E-04 -1.0949E-03 1.5897E-03 3.4945E-04 2.2749E-04 -5.5026E-04 5.0377E-04
TABLE 8-2
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens provided in embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic configuration of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens includes, in order from an object side to an image side, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, and has a concave object-side surface S15 and a concave image-side surface S16. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
In this example, the effective focal length f of the optical imaging lens is 7.75mm, the total length TTL of the optical imaging lens is 8.90mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens is 8.42mm, and half the maximum field angle Semi-FOV of the optical imaging lens is 46.8 °.
Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 10-1 and 10-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.
TABLE 9
TABLE 10-1
Face number A18 A20 A22 A24 A26 A28 A30
S1 -2.0009E-05 -1.2668E-05 -1.8017E-06 -3.2631E-06 5.6880E-07 -3.3218E-06 1.1759E-06
S2 -2.2964E-05 -9.3271E-06 -9.8585E-07 4.9337E-07 2.7335E-06 1.6621E-06 1.3855E-06
S3 -9.8223E-06 -2.6803E-06 -2.5987E-07 1.0219E-06 2.7851E-06 2.2812E-06 1.0115E-06
S4 -3.2909E-05 -9.2821E-06 -2.6300E-06 -3.9461E-08 -4.5834E-07 2.1900E-07 7.4157E-07
S5 -3.7537E-05 -1.3741E-05 -4.7777E-06 -2.5420E-06 -1.0693E-06 -3.0955E-06 -2.1154E-06
S6 -6.7832E-05 -4.0834E-05 -1.8146E-05 -9.1326E-06 -9.9819E-07 7.6502E-07 2.9595E-06
S7 -9.1846E-05 -5.7893E-05 -3.3420E-05 -1.9367E-05 -1.1916E-05 -4.5141E-06 -1.2541E-06
S8 2.2773E-04 6.7750E-05 2.4820E-06 -8.7485E-06 -2.2119E-05 -1.4841E-05 -1.3721E-05
S9 1.2071E-03 5.3338E-04 2.6902E-04 4.7730E-05 -2.5695E-05 -3.3616E-05 -2.7073E-05
S10 -8.9601E-04 -1.1280E-04 6.0829E-04 1.3076E-04 5.0991E-05 -3.4041E-05 -6.0490E-06
S11 2.3437E-03 2.8201E-03 2.6992E-03 -7.3770E-04 -3.4661E-04 -3.0869E-04 1.1068E-04
S12 -4.2431E-03 -1.9647E-03 -1.9223E-03 -8.3579E-04 -2.0035E-05 9.2315E-05 1.7881E-04
S13 -1.6051E-02 6.5375E-03 -6.3858E-04 -3.0625E-04 -6.9559E-05 4.0717E-04 -2.8168E-04
S14 1.4435E-03 1.4496E-03 -1.3730E-03 -2.1131E-03 -1.6270E-04 4.9993E-05 3.7133E-04
S15 -5.3459E-03 -1.4568E-03 2.7473E-03 -1.2161E-03 3.7037E-04 3.0930E-05 -1.6530E-05
S16 8.4955E-04 -1.0792E-03 1.6478E-03 5.4482E-04 2.6035E-04 -6.6905E-04 5.1711E-04
TABLE 10-2
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens provided in embodiment 5 can achieve good imaging quality.
In summary, examples 1 to 5 satisfy the relationships shown in table 11, respectively.
TABLE 11
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims (9)

1. An optical imaging lens, comprising, in order from an object side to an image side along an optical axis:
the first lens with positive focal power has a convex object side surface and a concave image side surface;
The second lens with negative focal power has a convex object side surface and a concave image side surface;
A third lens having positive optical power, the object side of which is convex;
A fourth lens element with negative refractive power having a concave object-side surface and a convex image-side surface;
A fifth lens element with optical power, the image-side surface being concave;
A sixth lens element with positive refractive power having a concave object-side surface and a convex image-side surface;
A seventh lens with negative focal power, wherein the object side surface of the seventh lens is convex, and the image side surface of the seventh lens is concave; and
An eighth lens element with negative refractive power having a concave object-side surface and a concave image-side surface; wherein,
The number of lenses having optical power in the optical imaging lens is eight;
half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies the following conditions: imgH > 8.0mm;
half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens and the distance TTL between the object side surface of the first lens and the imaging surface on the optical axis satisfy the following conditions: TTL/ImgH is less than 1.1; and
The center thickness CT3 of the third lens on the optical axis, the center thickness CT4 of the fourth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis, the air interval T34 of the third lens and the fourth lens on the optical axis, and the air interval T45 of the fourth lens and the fifth lens on the optical axis satisfy: -9.0 < (CT 3 xT 45-CT4 xCT 4)/(CT 4 xT 34-CT5 xT 34) < -2.5.
2. The optical imaging lens of claim 1, wherein an effective focal length f of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD < 2.0.
3. The optical imaging lens according to claim 1, wherein an effective focal length f4 of the fourth lens, an air interval T45 of the fourth lens and the fifth lens on the optical axis, a center thickness CT4 of the fourth lens on the optical axis, a center thickness CT5 of the fifth lens on the optical axis, and a radius of curvature R10 of an image side surface of the fifth lens satisfy: 12.5 < f 4T 45/(R10 CT4-R10 CT 5) < 26.5.
4. The optical imaging lens according to claim 1, wherein a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT6 of the sixth lens on the optical axis, a center thickness CT7 of the seventh lens on the optical axis, an air interval T56 of the fifth lens and the sixth lens on the optical axis, and an air interval T67 of the sixth lens and the seventh lens on the optical axis satisfy:
-1.5＜(CT5×CT6-CT5×CT7-CT6×CT6+CT6×CT7)/(T56×T67)＜0。
5. the optical imaging lens according to claim 1, wherein a radius of curvature R7 of an object side surface of the fourth lens and an effective focal length f of the optical imaging lens satisfy: -5.0 < R7/f < -3.5.
6. The optical imaging lens according to claim 1, wherein a radius of curvature R9 of an object side surface of the fifth lens, a radius of curvature R10 of an image side surface of the fifth lens, a distance TD on the optical axis from the object side surface of the first lens to the image side surface of the eighth lens satisfies: 2.5 < (R9+R10)/TD < 3.5.
7. The optical imaging lens according to claim 1, wherein a sum Σat of air intervals on the optical axis between any adjacent two lenses of the first to eighth lenses, a sum Σct of center thicknesses of the first to eighth lenses on the optical axis, a center thickness CT7 of the seventh lens on the optical axis, a center thickness CT8 of the eighth lens on the optical axis, an air interval T78 of the seventh and eighth lenses on the optical axis, and a radius of curvature R11 of an object side surface of the sixth lens satisfy: r11 x T78/(. Sigma.CT x CT 7. Sigma.CT x CT 8. Sigma.AT x CT 7+. Sigma.AT x CT 8). Times.0.1 > 14.0.
8. The optical imaging lens according to claim 1, wherein an effective focal length f6 of the sixth lens, an effective focal length f8 of the eighth lens, and a radius of curvature R11 of an object side surface of the sixth lens satisfy: -1.5 < (f 6-f 8)/R11 < 0.5.
9. The optical imaging lens according to claim 1, wherein a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, an air interval T12 of the first lens and the second lens on the optical axis, and an air interval T23 of the second lens and the third lens on the optical axis satisfy:
-5.0＜(CT1×CT2-CT1×CT3-CT2×CT2+CT2×CT3)/(T12×T23)＜-3.0。
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107643586A (en) * 2017-11-10 2018-01-30 浙江舜宇光学有限公司 Imaging lens system group
CN111007631A (en) * 2019-12-23 2020-04-14 瑞声通讯科技(常州)有限公司 Image pickup optical lens
CN210605169U (en) * 2019-08-15 2020-05-22 南昌欧菲精密光学制品有限公司 Optical system, image capturing module and electronic device
CN112394487A (en) * 2020-12-09 2021-02-23 玉晶光电(厦门)有限公司 Optical imaging lens
WO2022052018A1 (en) * 2020-09-11 2022-03-17 欧菲光集团股份有限公司 Optical system, camera module, and electronic device
CN218068415U (en) * 2022-04-28 2022-12-16 浙江舜宇光学有限公司 Image pickup lens group

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107643586A (en) * 2017-11-10 2018-01-30 浙江舜宇光学有限公司 Imaging lens system group
CN210605169U (en) * 2019-08-15 2020-05-22 南昌欧菲精密光学制品有限公司 Optical system, image capturing module and electronic device
CN111007631A (en) * 2019-12-23 2020-04-14 瑞声通讯科技(常州)有限公司 Image pickup optical lens
WO2022052018A1 (en) * 2020-09-11 2022-03-17 欧菲光集团股份有限公司 Optical system, camera module, and electronic device
CN112394487A (en) * 2020-12-09 2021-02-23 玉晶光电(厦门)有限公司 Optical imaging lens
CN218068415U (en) * 2022-04-28 2022-12-16 浙江舜宇光学有限公司 Image pickup lens group

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