CN211293433U - Optical imaging lens - Google Patents
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- CN211293433U CN211293433U CN201922198409.XU CN201922198409U CN211293433U CN 211293433 U CN211293433 U CN 211293433U CN 201922198409 U CN201922198409 U CN 201922198409U CN 211293433 U CN211293433 U CN 211293433U
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Abstract
The application discloses an optical imaging lens, it includes from the object side to the image side along the optical axis in proper order: a first lens having a negative refractive power, an object side surface of which is a concave surface; a second lens having an optical power; a third lens having optical power; a fourth lens having a positive optical power; a fifth lens having a negative refractive power, an image-side surface of which is concave; a sixth lens having positive optical power; a seventh lens having optical power; the maximum field angle FOV of the optical imaging lens meets the condition that the FOV is larger than or equal to 105 degrees and smaller than or equal to 135 degrees.
Description
Technical Field
The present application relates to the field of optical elements, and more particularly, to an optical imaging lens.
Background
With the upgrading of portable devices and the development of image software functions and video software functions on the portable devices, the hardware level on the devices is also continuously increased. A camera module is generally installed in a portable device such as a mobile phone, so that the mobile phone has a camera function. A Charge-coupled Device (CCD) type image sensor or a Complementary Metal Oxide Semiconductor (CMOS) type image sensor is generally provided in the camera module, and an optical imaging lens is provided. The optical imaging lens can collect light rays on the object side, the imaging light rays travel along the light path of the optical imaging lens and irradiate the image sensor, and then the image sensor converts optical signals into electric signals to form image data.
In addition, the portable devices represented by mobile phones are increasingly required to have an ultra-thin thickness, and the sizes of various components mounted thereon are also being compressed. The total optical length of the camera module is also greatly limited. While still being desirable for good optical performance while being limited in size.
In order to meet the miniaturization requirement and meet the imaging requirement, an optical imaging lens which can satisfy both miniaturization and ultra-wide angle and has high imaging quality is required.
SUMMERY OF THE UTILITY MODEL
The present application provides an optical imaging lens applicable to portable electronic products that may solve, at least, or in part, at least one of the above-mentioned disadvantages of the related art.
The present application provides an optical imaging lens, sequentially from an object side to an image side along an optical axis, comprising: the first lens with negative focal power, the object side surface of the first lens can be a concave surface; a second lens having an optical power; a third lens having optical power; a fourth lens having a positive optical power; the image side surface of the fifth lens can be a concave surface; a sixth lens having positive optical power; a seventh lens having optical power.
In one embodiment, the object side surface of the first lens to the image side surface of the seventh lens include at least one aspherical mirror surface.
In one embodiment, the maximum field angle FOV of the optical imaging lens may satisfy 105 ≦ FOV ≦ 135.
In one embodiment, the effective focal length f1 of the first lens, the effective focal length f5 of the fifth lens, the radius of curvature R1 of the object-side surface of the first lens, and the radius of curvature R5 of the object-side surface of the third lens may satisfy 1.0 < (f1+ f5)/(R1-R5) < 1.4.
In one embodiment, the effective focal length f4 of the fourth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the optical imaging lens may satisfy 2.5 < (f4+ f6)/f < 3.2.
In one embodiment, an effective focal length f3 of the third lens, a radius of curvature R5 of an object-side surface of the third lens, and a radius of curvature R6 of an image-side surface of the third lens may satisfy 1.3 < f3/(R5+ R6) < 2.3.
In one embodiment, a radius of curvature R11 of the object-side surface of the sixth lens, a radius of curvature R12 of the image-side surface of the sixth lens, a radius of curvature R13 of the object-side surface of the seventh lens, and a radius of curvature R14 of the image-side surface of the seventh lens may satisfy 0.2 < (R11+ R12)/(R13+ R14) < 1.5.
In one embodiment, a central thickness CT1 of the first lens on the optical axis, a central thickness CT2 of the second lens on the optical axis, and a central thickness CT3 of the third lens on the optical axis may satisfy 0.6 < CT1/(CT2+ CT3) < 1.1.
In one embodiment, the optical imaging lens further includes a stop disposed at the optical axis, and a distance SL between the stop and an imaging surface of the optical imaging lens on the optical axis and a distance TTL between an object side surface of the first lens and the imaging surface on the optical axis may satisfy 0.4 < SL/TTL < 0.7.
In one embodiment, a combined focal length f23 of the second and third lenses and a combined focal length f56 of the fifth and sixth lenses may satisfy 0.5 < f56/f23 < 1.3.
In one embodiment, an on-axis distance SAG42 from an intersection point of an image-side surface of the fourth lens and the optical axis to an effective radius vertex of the image-side surface of the fourth lens, an on-axis distance SAG51 from an intersection point of an object-side surface of the fifth lens and the optical axis to an effective radius vertex of an object-side surface of the fifth lens, and an on-axis distance SAG62 from an intersection point of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of an image-side surface of the sixth lens may satisfy 0.6 < SAG62/(SAG42+ SAG51) < 1.2.
In one embodiment, the central thickness CT7 of the seventh lens on the optical axis, the on-axis distance SAG71 of the intersection point of the object-side surface of the seventh lens and the optical axis to the effective radius vertex of the object-side surface of the seventh lens, and the on-axis distance SAG72 of the intersection point of the image-side surface of the seventh lens and the optical axis to the effective radius vertex of the image-side surface of the seventh lens may satisfy 1.0 < (SAG72-SAG71)/CT7 < 2.4.
In one embodiment, the effective half aperture DT11 of the object side surface of the first lens and the effective half aperture DT72 of the image side surface of the seventh lens satisfy 1.0 < DT11/DT72 < 1.5.
This application has adopted seven lens, through the focal power of rational distribution each lens, face type, the center thickness of each lens and the epaxial interval between each lens etc for above-mentioned optical imaging lens has at least one beneficial effect such as miniaturization, super wide angle, high imaging quality.
Drawings
Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic structural view 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 astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application; fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application; fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 is a schematic structural view showing 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 chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application; fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 5;
fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application; fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 6;
fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application; fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 7;
fig. 15 is a schematic structural view showing an optical imaging lens according to embodiment 8 of the present application; fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 8.
Detailed Description
For a better understanding of the present application, various aspects of the present 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 present application and does not limit the scope of the present 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 this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and 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, it means that 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 called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.
It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" 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. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present 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 the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
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 may include, for example, seven lenses having optical powers, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses are arranged in sequence from the object side to the image side along the optical axis. In the first to seventh lenses, any adjacent two lenses may have an air space therebetween.
In an exemplary embodiment, the first lens may have a negative optical power, and the object side surface thereof may be concave; the second lens has positive focal power or negative focal power; the third lens has positive focal power or negative focal power; the fourth lens may have a positive optical power; the fifth lens can have negative focal power, and the image side surface of the fifth lens can be concave; the sixth lens may have a positive optical power; the seventh lens has positive power or negative power. The low-order aberration of the lens is effectively balanced and controlled by reasonably controlling the positive and negative distribution of the focal power of each component of the lens and the lens surface curvature. The first lens with negative focal power and the concave object side surface is beneficial to reducing the incident angle of imaging light rays at the peripheral field of view of the optical imaging lens. The fourth lens with positive focal power is beneficial to balancing off-axis aberration, and further improves the imaging quality of the optical imaging lens. The fifth lens having negative refractive power and a concave image-side surface contributes to shortening the optical total length of the optical imaging lens, so that the optical imaging lens tends to be miniaturized. The sixth lens with positive focal power is beneficial to improving the image quality of an on-axis field of view of the optical imaging lens.
In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object-side surface of the first lens to the image-side surface of the seventh lens is an aspherical mirror surface. The aspheric 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 better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the 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, and the seventh lens is an aspheric mirror surface. Optionally, each of the third, fourth, and fifth lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces. Optionally, each of the first, second, third, fourth, fifth, sixth, and seventh lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces.
In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm. The stop may be provided at an appropriate position as required, for example, between the third lens and the fourth lens.
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 an imaging surface.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 105 ≦ FOV ≦ 135, where FOV is the maximum angle of view of the optical imaging lens. By setting the field angle in this range, the optical imaging lens can obtain a larger field of view, which further contributes to the optical imaging lens obtaining more object imaging contents.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < (f1+ f5)/(R1-R5) < 1.4, where f1 is an effective focal length of the first lens, f5 is an effective focal length of the fifth lens, R1 is a radius of curvature of an object-side surface of the first lens, and R5 is a radius of curvature of an object-side surface of the third lens. More specifically, f1, f5, R1 and R5 may further satisfy 1.1 < (f1+ f5)/(R1-R5) < 1.3. By matching f1, f5, R1 and R5, the astigmatism amount of the optical imaging lens can be effectively controlled, and the imaging quality of the off-axis field of view of the optical imaging lens can be improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 2.5 < (f4+ f6)/f < 3.2, where f4 is an effective focal length of the fourth lens, f6 is an effective focal length of the sixth lens, and f is a total effective focal length of the optical imaging lens. More specifically, f4, f6, and f may further satisfy 2.53 < (f4+ f6)/f < 3.10. By controlling the ratio of the sum of the effective focal length of the fourth lens and the effective focal length of the sixth lens to the total effective focal length, the total deflection angle of the imaging light rays at the two lenses at the marginal field of view can be controlled, and the sensitivity of the optical imaging lens can be further effectively reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.3 < f3/(R5+ R6) < 2.3, where f3 is an effective focal length of the third lens, R5 is a radius of curvature of an object-side surface of the third lens, and R6 is a radius of curvature of an image-side surface of the third lens. More specifically, f3, R5, and R6 can further satisfy 1.31 < f3/(R5+ R6) < 2.28. By controlling the effective focal length of the third lens and the curvature radius of the two mirror surfaces of the third lens, the shape of the third lens can be well controlled, and the incidence condition of imaging light rays at an off-axis visual field on the third lens can be improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.2 < (R11+ R12)/(R13+ R14) < 1.5, where R11 is a radius of curvature of an object-side surface of the sixth lens, R12 is a radius of curvature of an image-side surface of the sixth lens, R13 is a radius of curvature of an object-side surface of the seventh lens, and R14 is a radius of curvature of an image-side surface of the seventh lens. More specifically, R11, R12, R13 and R14 may further satisfy 0.21 < (R11+ R12)/(R13+ R14) < 1.49. By matching the respective mirror surfaces in the object side surface of the sixth lens to the image side surface of the seventh lens, it is advantageous to better distribute the optical power of the sixth lens and the optical power of the seventh lens, and to improve the off-axis aberrations such as curvature of field, coma, and the like in the peripheral field.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.6 < CT1/(CT2+ CT3) < 1.1, where CT1 is a central thickness of the first lens on the optical axis, CT2 is a central thickness of the second lens on the optical axis, and CT3 is a central thickness of the third lens on the optical axis. More specifically, CT1, CT2, and CT3 may further satisfy 0.63 < CT1/(CT2+ CT3) < 1.08. By controlling the central thickness of each lens in the first lens value and the third lens, the distortion quantity of the optical imaging lens can be well regulated and controlled, and finally the distortion of the optical imaging lens is limited.
In an exemplary embodiment, the optical imaging lens of the present application further includes a diaphragm disposed at the optical axis, and the optical imaging lens may satisfy a conditional expression of 0.4 < SL/TTL < 0.7, where SL is a distance on the optical axis between the diaphragm and an imaging surface of the optical imaging lens, and TTL is a distance on the optical axis between an object side surface of the first lens and the imaging surface. More specifically, SL and TTL further satisfy 0.49 < SL/TTL < 0.62. By limiting the position of the diaphragm on the optical axis, the length of the optical imaging lens can be effectively controlled, which contributes to miniaturization of the optical imaging lens.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5 < f56/f23 < 1.3, where f23 is a combined focal length of the second lens and the third lens, and f56 is a combined focal length of the fifth lens and the sixth lens. More specifically, f23 and f56 further satisfy 0.52 < f56/f23 < 1.29. By controlling the ratio of the combined focal length of the fifth lens and the sixth lens to the combined focal length of the third lens and the fourth lens, the focal power of each lens can be effectively distributed, and the correction of the on-axis aberration and the off-axis aberration of the optical imaging lens is facilitated.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.6 < SAG62/(SAG42+ SAG51) < 1.2, where SAG42 is an on-axis distance from an intersection of an image-side surface of the fourth lens and the optical axis to an effective radius vertex of the image-side surface of the fourth lens, SAG51 is an on-axis distance from an intersection of an object-side surface of the fifth lens and the optical axis to an effective radius vertex of the object-side surface of the fifth lens, and SAG62 is an on-axis distance from an intersection of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of the image-side surface of the sixth lens. More specifically, SAG42, SAG51, and SAG62 may further satisfy 0.65 < SAG62/(SAG42+ SAG51) < 1.2. By matching the rise of the image side surface of the fourth lens, the rise of the object side surface of the fifth lens and the rise of the image side surface of the sixth lens, the shapes of the fourth lens, the fifth lens and the sixth lens can be effectively controlled, the shape of the seventh lens can be influenced, and the sensitivity of the optical imaging lens can be favorably reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < (SAG72-SAG71)/CT7 < 2.4, where CT7 is a central thickness of the seventh lens on the optical axis, SAG71 is an on-axis distance from an intersection of an object-side surface of the seventh lens and the optical axis to an effective radius vertex of the object-side surface of the seventh lens, and SAG72 is an on-axis distance from an intersection of an image-side surface of the seventh lens and the optical axis to an effective radius vertex of the image-side surface of the seventh lens. More specifically, CT7, SAG71, and SAG72 may further satisfy 1.05 < (SAG72-SAG71)/CT7 < 2.34. By controlling the ratio of the difference between the rise of the two lens surfaces of the seventh lens to the thickness of the center of the seventh lens, the seventh lens can be conveniently machined and formed, the sensitivity of the seventh lens can be favorably reduced, and the relationship between the miniaturization of the optical imaging lens and the relative illumination of the off-axis field can be better balanced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < DT11/DT72 < 1.5, where DT11 is an effective half aperture of an object side surface of the first lens, and DT72 is an effective half aperture of an image side surface of the seventh lens. By controlling the ratio of the effective half aperture of the object side surface of the first lens to the effective half aperture of the image side surface of the seventh lens, the maximum aperture of the first lens and the maximum aperture of the seventh lens can be controlled, so that each lens is better matched with the lens barrel, and each lens has better assembly manufacturability.
The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, seven lenses as described above. By reasonably distributing the focal power, the surface type, the central thickness of each lens, the on-axis distance between each lens and the like, the volume of the imaging lens can be effectively reduced, the sensitivity of the imaging lens can be reduced, and the machinability of the imaging lens can be improved, so that the optical imaging lens is more beneficial to production and processing and can be suitable for portable electronic products. Simultaneously, the optical imaging lens of this application still possesses excellent optical properties such as super wide angle, high imaging quality.
However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although seven lenses are exemplified in the embodiment, the optical imaging lens is not limited to include seven lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the 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 structural diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a third lens E3, a stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 1 shows a basic parameter table of the optical imaging lens of embodiment 1, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).
TABLE 1
In embodiment 1, the value of the total effective focal length f of the optical imaging lens is 1.53mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 is 6.52mm, and the value of ImgH, which is half the diagonal length of the effective pixel area on the imaging surface S17, is 2.57 mm.
In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the seventh lens E7 are aspheric surfaces, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric surface formula:
wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 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 i-th order of the aspherical surface. Table 2 below shows the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 to S14 in example 14、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.2878E-01 | -9.0740E-02 | 4.8151E-02 | -1.8090E-02 | 4.7130E-03 | -8.3000E-04 | 9.4800E-05 | -6.3000E-06 | 1.8400E-07 |
| S2 | 3.6263E-01 | -3.2484E-01 | 1.9433E-01 | -3.8160E-02 | -3.3600E-03 | -1.1670E-02 | 4.5030E-03 | 2.5550E-03 | -1.0800E-03 |
| S3 | 3.1865E-02 | -2.5160E-01 | 8.9409E-01 | -1.6918E+00 | 1.8820E+00 | -1.2792E+00 | 5.2573E-01 | -1.2058E-01 | 1.1895E-02 |
| S4 | -6.5090E-02 | 3.8548E-01 | -5.2920E-01 | -1.0313E+00 | 4.2674E+00 | -5.9311E+00 | 4.2317E+00 | -1.5631E+00 | 2.3809E-01 |
| S5 | -1.3620E-02 | 6.6550E-01 | -2.5010E+00 | 7.1623E+00 | -1.9615E+01 | 4.0133E+01 | -4.9157E+01 | 3.1805E+01 | -8.5834E+00 |
| S6 | 2.0454E-01 | -4.0620E-02 | 3.0678E+00 | -2.6238E+01 | 1.4091E+02 | -4.7793E+02 | 1.0642E+03 | -1.4037E+03 | 8.1347E+02 |
| S7 | 7.4699E-02 | -2.7490E-01 | 2.3964E+00 | -1.4371E+01 | 4.9116E+01 | -1.0242E+02 | 1.3020E+02 | -9.2939E+01 | 2.8693E+01 |
| S8 | -3.5770E-01 | 4.7007E-01 | 1.8332E-01 | -9.2534E+00 | 4.2315E+01 | -1.0390E+02 | 1.5003E+02 | -1.1645E+02 | 3.7012E+01 |
| S9 | -9.1560E-01 | 1.2736E+00 | -7.1545E-01 | -9.4034E+00 | 5.0720E+01 | -1.4116E+02 | 2.3280E+02 | -2.0432E+02 | 7.2292E+01 |
| S10 | -4.3667E-01 | 6.9690E-01 | -5.9916E-01 | -4.4543E-01 | 1.3695E+00 | 3.6631E-01 | -3.0911E+00 | 2.9585E+00 | -9.2053E-01 |
| S11 | -1.1867E-01 | 1.0080E-03 | 9.3140E-01 | -3.6215E+00 | 7.2628E+00 | -8.4469E+00 | 5.7366E+00 | -2.1112E+00 | 3.2423E-01 |
| S12 | -2.0915E-01 | 8.7587E-01 | -1.7334E+00 | 2.5212E+00 | -2.4630E+00 | 1.5531E+00 | -5.9679E-01 | 1.2536E-01 | -1.0880E-02 |
| S13 | -2.2951E-01 | -7.3400E-02 | 4.0412E-01 | -5.5735E-01 | 4.5015E-01 | -2.3432E-01 | 7.5520E-02 | -1.3400E-02 | 9.8800E-04 |
| S14 | -2.2482E-01 | 1.8592E-01 | -1.2523E-01 | 6.8972E-02 | -2.9060E-02 | 8.5030E-03 | -1.5900E-03 | 1.6700E-04 | -7.5000E-06 |
TABLE 2
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different angles of view. Fig. 2D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a 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 according to 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 parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a third lens E3, a stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 2, the value of the total effective focal length f of the optical imaging lens is 1.60mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 is 6.75mm, and the value of ImgH, which is half the diagonal length of the effective pixel area on the imaging surface S17, is 2.57 mm.
Table 3 shows a basic parameter table of the optical imaging lens of embodiment 2, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 4 shows high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 3
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 9.1941E-02 | -5.4010E-02 | 2.4604E-02 | -8.0400E-03 | 1.8540E-03 | -2.9000E-04 | 3.0400E-05 | -1.8000E-06 | 4.9300E-08 |
| S2 | 3.3143E-01 | -3.2301E-01 | 2.9362E-01 | -2.6345E-01 | 2.4753E-01 | -1.6814E-01 | 5.6530E-02 | -4.3700E-03 | -1.1600E-03 |
| S3 | 4.4511E-02 | -3.2783E-01 | 1.0827E+00 | -1.9658E+00 | 2.1242E+00 | -1.4069E+00 | 5.6308E-01 | -1.2546E-01 | 1.1964E-02 |
| S4 | -8.1390E-02 | 6.0891E-01 | -1.5766E+00 | 1.8900E+00 | -7.3163E-01 | -6.4118E-01 | 8.4977E-01 | -3.6464E-01 | 5.7133E-02 |
| S5 | -3.3440E-02 | 8.7858E-01 | -2.9289E+00 | 5.5353E+00 | -8.6919E+00 | 1.4298E+01 | -1.7868E+01 | 1.2491E+01 | -3.7407E+00 |
| S6 | 1.6524E-01 | 1.3488E-01 | 3.3435E-01 | -3.5216E+00 | 1.6469E+01 | -2.1297E+01 | -1.9955E+01 | 8.2108E+01 | -6.8614E+01 |
| S7 | 6.7548E-02 | -5.3872E-01 | 7.6805E+00 | -6.6025E+01 | 3.5421E+02 | -1.2139E+03 | 2.5759E+03 | -3.0741E+03 | 1.5732E+03 |
| S8 | -4.5102E-01 | 6.1930E-01 | -5.2501E-01 | -9.9413E-01 | -3.9873E+00 | 4.0924E+01 | -1.1013E+02 | 1.3574E+02 | -6.5709E+01 |
| S9 | -8.4398E-01 | 9.4577E-01 | -1.6324E+00 | 7.5445E+00 | -3.8453E+01 | 1.1044E+02 | -1.7933E+02 | 1.6736E+02 | -7.0984E+01 |
| S10 | -3.6703E-01 | -6.1970E-02 | 3.3319E+00 | -1.1483E+01 | 1.9305E+01 | -1.7142E+01 | 6.9545E+00 | -7.9420E-02 | -5.7354E-01 |
| S11 | -1.8950E-01 | -2.0589E-01 | 3.7736E+00 | -1.4025E+01 | 2.7366E+01 | -3.1505E+01 | 2.1631E+01 | -8.2320E+00 | 1.3401E+00 |
| S12 | -1.1528E-01 | 5.0725E-01 | -8.4716E-01 | 1.0441E+00 | -8.1043E-01 | 3.2509E-01 | 2.2410E-03 | -5.1610E-02 | 1.2961E-02 |
| S13 | -3.6732E-01 | 2.7287E-02 | 5.5595E-01 | -9.7819E-01 | 8.8791E-01 | -4.8589E-01 | 1.5942E-01 | -2.8630E-02 | 2.1530E-03 |
| S14 | -3.6786E-01 | 4.4990E-01 | -3.8641E-01 | 2.2684E-01 | -9.0340E-02 | 2.3881E-02 | -4.0000E-03 | 3.8500E-04 | -1.6000E-05 |
TABLE 4
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different angles of view. Fig. 4D shows a chromatic aberration of magnification 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 according to 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 structural diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a third lens E3, a stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 3, the value of the total effective focal length f of the optical imaging lens is 1.41mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 is 6.96mm, and the value of ImgH, which is half the diagonal length of the effective pixel area on the imaging surface S17, is 2.57 mm.
Table 5 shows a basic parameter table of the optical imaging lens of embodiment 3, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 6 shows high-order term coefficients that can be used for each aspherical mirror surface in example 3, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 5
TABLE 6
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different angles of view. Fig. 6D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents a 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 according to 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 structural diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a third lens E3, a stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a concave object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 4, the value of the total effective focal length f of the optical imaging lens is 1.35mm, the value of the on-axis distance TTL from the object side surface S1 to the imaging surface S17 of the first lens E1 is 7.27mm, and the value of ImgH, which is half the diagonal length of the effective pixel area on the imaging surface S17, is 2.57 mm.
Table 7 shows a basic parameter table of the optical imaging lens of embodiment 4, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 8 shows high-order term coefficients that can be used for each aspherical mirror surface in example 4, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 7
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 5.9829E-02 | -2.6410E-02 | 8.5710E-03 | -1.9400E-03 | 3.0500E-04 | -3.3000E-05 | 2.2900E-06 | -9.4000E-08 | 1.7100E-09 |
| S2 | 2.5563E-01 | -1.8247E-01 | 3.2524E-02 | 1.1931E-01 | -1.7442E-01 | 1.4246E-01 | -7.5470E-02 | 2.2759E-02 | -2.8800E-03 |
| S3 | 3.8009E-02 | -2.0700E-01 | 5.4698E-01 | -8.2943E-01 | 7.5785E-01 | -4.2911E-01 | 1.4842E-01 | -2.8910E-02 | 2.4400E-03 |
| S4 | -1.3239E-01 | 1.1502E+00 | -3.5767E+00 | 5.6653E+00 | -4.3223E+00 | 3.8530E-01 | 1.8282E+00 | -1.2553E+00 | 2.7047E-01 |
| S5 | -1.1963E-01 | 1.3243E+00 | -4.5046E+00 | 1.0371E+01 | -2.4037E+01 | 5.2994E+01 | -7.7676E+01 | 6.1364E+01 | -1.9917E+01 |
| S6 | 1.5181E-01 | -3.1505E-01 | 7.7217E+00 | -6.1632E+01 | 2.8941E+02 | -8.0211E+02 | 1.2991E+03 | -1.1140E+03 | 3.7508E+02 |
| S7 | 5.7353E-02 | -4.9529E-01 | 6.1017E+00 | -4.3609E+01 | 1.9085E+02 | -5.1986E+02 | 8.5833E+02 | -7.8356E+02 | 3.0215E+02 |
| S8 | -6.0762E-01 | 1.3874E+00 | 2.2547E-01 | -2.1436E+01 | 8.7572E+01 | -1.8103E+02 | 2.1569E+02 | -1.3929E+02 | 3.7135E+01 |
| S9 | -1.2014E+00 | 2.6260E+00 | -2.9264E+00 | -1.1045E+01 | 5.5244E+01 | -1.3062E+02 | 1.9801E+02 | -1.7102E+02 | 6.1504E+01 |
| S10 | -6.2831E-01 | 1.7888E+00 | -3.2098E+00 | 1.9431E+00 | 4.2995E+00 | -1.1335E+01 | 1.2068E+01 | -6.5030E+00 | 1.4557E+00 |
| S11 | -4.1995E-01 | 1.7000E+00 | -4.7396E+00 | 8.7902E+00 | -1.0256E+01 | 7.3405E+00 | -2.9850E+00 | 5.4104E-01 | -7.2400E-03 |
| S12 | -1.3730E-01 | 6.1448E-01 | -1.3820E+00 | 2.3111E+00 | -2.9002E+00 | 2.6581E+00 | -1.5371E+00 | 4.7847E-01 | -6.0360E-02 |
| S13 | -4.5045E-01 | 1.1577E-01 | -1.7844E-01 | 7.5218E-01 | -1.1484E+00 | 8.5353E-01 | -3.3788E-01 | 6.8989E-02 | -5.7500E-03 |
| S14 | -3.7605E-01 | 3.3266E-01 | -1.9833E-01 | 8.6629E-02 | -2.9330E-02 | 7.5410E-03 | -1.3400E-03 | 1.4000E-04 | -6.4000E-06 |
TABLE 8
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different angles of view. Fig. 8D shows a chromatic aberration of magnification 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 according to 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 structural diagram of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a third lens E3, a stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a concave object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 5, the value of the total effective focal length f of the optical imaging lens is 1.35mm, the value of the on-axis distance TTL from the object side surface S1 to the imaging surface S17 of the first lens E1 is 7.23mm, and the value of ImgH, which is half the diagonal length of the effective pixel area on the imaging surface S17, is 2.57 mm.
Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 10 shows high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 9
Watch 10
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different angles of view. Fig. 10D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a third lens E3, a stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a concave object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 6, the value of the total effective focal length f of the optical imaging lens is 1.25mm, the value of the on-axis distance TTL from the object side surface S1 to the imaging surface S17 of the first lens E1 is 6.90mm, and the value of ImgH, which is half the diagonal length of the effective pixel area on the imaging surface S17, is 2.57 mm.
Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 12 shows high-order term coefficients that can be used for each aspherical mirror surface in example 6, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 11
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 8.5312E-02 | -4.9100E-02 | 2.0228E-02 | -5.7600E-03 | 1.1280E-03 | -1.5000E-04 | 1.3000E-05 | -6.6000E-07 | 1.5000E-08 |
| S2 | 2.7578E-01 | -2.1070E-01 | 1.6435E-02 | 1.8717E-01 | -2.2226E-01 | 1.4413E-01 | -6.5680E-02 | 1.9300E-02 | -2.5600E-03 |
| S3 | 2.0240E-02 | -1.1845E-01 | 3.9856E-01 | -6.9424E-01 | 6.9175E-01 | -4.1649E-01 | 1.5102E-01 | -3.0520E-02 | 2.6470E-03 |
| S4 | -1.0885E-01 | 1.0179E+00 | -4.0150E+00 | 8.9500E+00 | -1.2171E+01 | 1.0352E+01 | -5.4218E+00 | 1.6134E+00 | -2.1088E-01 |
| S5 | -6.4030E-02 | 1.1177E+00 | -4.8111E+00 | 1.3095E+01 | -2.9564E+01 | 6.3637E+01 | -1.0070E+02 | 8.9222E+01 | -3.2675E+01 |
| S6 | 1.8908E-01 | -1.2627E-01 | 6.4582E+00 | -6.0502E+01 | 3.2091E+02 | -8.8187E+02 | 1.0660E+03 | 6.2159E+00 | -7.5826E+02 |
| S7 | 8.7386E-02 | -8.3982E-01 | 1.2339E+01 | -1.1149E+02 | 6.1581E+02 | -2.1206E+03 | 4.4304E+03 | -5.1319E+03 | 2.5233E+03 |
| S8 | -3.7466E-01 | 5.4868E-01 | 1.9063E+00 | -2.5408E+01 | 1.0529E+02 | -2.5235E+02 | 3.8413E+02 | -3.4161E+02 | 1.3200E+02 |
| S9 | -1.0022E+00 | 1.7534E+00 | -5.0664E-01 | -1.9028E+01 | 9.7679E+01 | -3.0491E+02 | 6.0311E+02 | -6.4049E+02 | 2.7315E+02 |
| S10 | -3.9114E-01 | -3.5010E-01 | 5.9356E+00 | -2.1670E+01 | 4.2501E+01 | -4.9046E+01 | 3.3006E+01 | -1.1770E+01 | 1.6712E+00 |
| S11 | -1.7548E-01 | -5.9553E-01 | 5.9907E+00 | -2.1524E+01 | 4.3749E+01 | -5.3723E+01 | 3.9512E+01 | -1.6059E+01 | 2.7732E+00 |
| S12 | -4.6923E-01 | 1.9156E+00 | -4.4097E+00 | 7.3418E+00 | -8.5638E+00 | 6.6866E+00 | -3.2440E+00 | 8.7093E-01 | -9.8280E-02 |
| S13 | -3.2941E-01 | 6.4088E-02 | -1.6036E-01 | 5.4328E-01 | -7.1295E-01 | 4.5909E-01 | -1.5587E-01 | 2.6903E-02 | -1.8700E-03 |
| S14 | -2.9064E-01 | 1.4021E-01 | -1.1500E-03 | -3.3630E-02 | 1.5790E-02 | -2.7500E-03 | 1.0000E-05 | 5.1900E-05 | -4.4000E-06 |
TABLE 12
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different angles of view. Fig. 12D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens according to embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a third lens E3, a stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 7, the value of the total effective focal length f of the optical imaging lens is 1.29mm, the value of the on-axis distance TTL from the object side surface S1 to the imaging surface S17 of the first lens E1 is 6.92mm, and the value of ImgH, which is half the diagonal length of the effective pixel area on the imaging surface S17, is 2.57 mm.
Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 14 shows high-order term coefficients that can be used for each aspherical mirror surface in example 7, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Watch 13
TABLE 14
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different angles of view. Fig. 14D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 7, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens according to embodiment 7 can achieve good imaging quality.
Example 8
An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural diagram of an optical imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a third lens E3, a stop STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a concave object-side surface S3 and a convex image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 8, the value of the total effective focal length f of the optical imaging lens is 1.24mm, the value of the on-axis distance TTL from the object side surface S1 to the imaging surface S17 of the first lens E1 is 7.06mm, and the value of ImgH, which is half the diagonal length of the effective pixel area on the imaging surface S17, is 2.57 mm.
Table 15 shows a basic parameter table of the optical imaging lens of embodiment 8, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 16 shows high-order term coefficients that can be used for each aspherical mirror surface in example 8, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Watch 15
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 8.0957E-02 | -4.5250E-02 | 1.7375E-02 | -4.5800E-03 | 8.3100E-04 | -1.0000E-04 | 8.3400E-06 | -4.0000E-07 | 8.4100E-09 |
| S2 | 2.6317E-01 | -1.7063E-01 | -6.4180E-02 | 2.6615E-01 | -2.7871E-01 | 1.7298E-01 | -7.0970E-02 | 1.7536E-02 | -1.9400E-03 |
| S3 | 2.8319E-02 | -1.2397E-01 | 3.1044E-01 | -4.5355E-01 | 4.1146E-01 | -2.3742E-01 | 8.5030E-02 | -1.7280E-02 | 1.5230E-03 |
| S4 | -4.7720E-02 | 5.9363E-01 | -2.9093E+00 | 8.4286E+00 | -1.5000E+01 | 1.6618E+01 | -1.1243E+01 | 4.2694E+00 | -7.0017E-01 |
| S5 | -2.3940E-02 | 4.9443E-01 | -1.7218E+00 | 2.0957E+00 | 7.6661E-01 | 1.5160E+01 | -7.7237E+01 | 1.1937E+02 | -6.3344E+01 |
| S6 | 1.9091E-01 | -7.6800E-01 | 2.1579E+01 | -2.7349E+02 | 2.1187E+03 | -9.9192E+03 | 2.7709E+04 | -4.2536E+04 | 2.7653E+04 |
| S7 | 1.0569E-01 | -1.8784E+00 | 3.8399E+01 | -4.6668E+02 | 3.4889E+03 | -1.6346E+04 | 4.6693E+04 | -7.4264E+04 | 5.0313E+04 |
| S8 | -3.9165E-01 | 1.2024E+00 | -5.8660E+00 | 2.0129E+01 | -7.5069E+01 | 2.8001E+02 | -7.3428E+02 | 1.0854E+03 | -6.7251E+02 |
| S9 | -1.0800E+00 | 3.3840E+00 | -1.6270E+01 | 7.9518E+01 | -3.5086E+02 | 1.0891E+03 | -2.1182E+03 | 2.3468E+03 | -1.1302E+03 |
| S10 | -5.2853E-01 | 9.8702E-01 | -2.4425E-01 | -4.9415E+00 | 1.4359E+01 | -1.9106E+01 | 1.3179E+01 | -4.1471E+00 | 3.2404E-01 |
| S11 | -2.6768E-01 | 3.2316E-01 | 1.2987E+00 | -8.0188E+00 | 2.0495E+01 | -2.9126E+01 | 2.3782E+01 | -1.0451E+01 | 1.9105E+00 |
| S12 | -4.2757E-01 | 1.8021E+00 | -4.3859E+00 | 7.5437E+00 | -9.0212E+00 | 7.2685E+00 | -3.6620E+00 | 1.0236E+00 | -1.2030E-01 |
| S13 | -3.3680E-01 | 2.8231E-02 | -1.3868E-01 | 6.0415E-01 | -8.2680E-01 | 5.4507E-01 | -1.8933E-01 | 3.3473E-02 | -2.3800E-03 |
| S14 | -3.6267E-01 | 2.1226E-01 | -3.7090E-02 | -2.9640E-02 | 2.1648E-02 | -6.3800E-03 | 9.7000E-04 | -7.2000E-05 | 1.9100E-06 |
TABLE 16
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 8. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different angles of view. Fig. 16D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 8, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens according to embodiment 8 can achieve good imaging quality.
In summary, examples 1 to 8 each satisfy the relationship shown in table 17.
| Conditional expression (A) example | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| FOV(°) | 110.4 | 105.0 | 114.0 | 117.0 | 120.0 | 125.1 | 128.1 | 135.0 |
| (f1+f5)/(R1-R5) | 1.24 | 1.22 | 1.24 | 1.19 | 1.19 | 1.16 | 1.14 | 1.12 |
| (f4+f6)/f | 2.66 | 2.55 | 2.86 | 2.95 | 2.94 | 3.05 | 2.95 | 3.02 |
| f3/(R5+R6) | 1.55 | 2.27 | 1.75 | 1.37 | 1.32 | 1.73 | 1.59 | 1.62 |
| (R11+R12)/(R13+R14) | 1.25 | 0.88 | 0.52 | 0.21 | 0.34 | 1.47 | 1.47 | 1.24 |
| CT1/(CT2+CT3) | 0.73 | 1.07 | 0.86 | 0.98 | 0.98 | 0.76 | 0.76 | 0.65 |
| SL/TTL | 0.60 | 0.58 | 0.53 | 0.50 | 0.50 | 0.53 | 0.52 | 0.50 |
| f56/f23 | 0.54 | 0.62 | 0.53 | 0.62 | 0.68 | 0.78 | 0.99 | 1.27 |
| SAG62/(SAG42+SAG51) | 0.96 | 0.92 | 0.76 | 0.68 | 0.70 | 1.02 | 1.16 | 1.19 |
| (SAG72-SAG71)/CT7 | 1.10 | 1.10 | 1.97 | 2.30 | 2.31 | 1.67 | 1.59 | 1.47 |
| DT11/DT72 | 1.07 | 1.17 | 1.27 | 1.46 | 1.49 | 1.32 | 1.37 | 1.36 |
TABLE 17
The present application also provides an imaging Device, which is provided with an electron sensing element to form an image, wherein the electron sensing element may be a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of protection covered by the present application is not limited to the embodiments with a specific combination of the features described above, but also covers other embodiments with any combination of the features described above or their equivalents without departing from the scope of the present application. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (22)
1. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:
a first lens having a negative refractive power, an object side surface of which is a concave surface;
a second lens having an optical power;
a third lens having optical power;
a fourth lens having a positive optical power;
a fifth lens having a negative refractive power, an image-side surface of which is concave;
a sixth lens having positive optical power;
a seventh lens having optical power;
the maximum field angle FOV of the optical imaging lens is larger than or equal to 105 degrees and smaller than or equal to 135 degrees.
2. The optical imaging lens of claim 1, wherein an effective focal length f1 of the first lens, an effective focal length f5 of the fifth lens, a radius of curvature R1 of an object-side surface of the first lens, and a radius of curvature R5 of an object-side surface of the third lens satisfy 1.0 < (f1+ f5)/(R1-R5) < 1.4.
3. The optical imaging lens of claim 1, wherein the effective focal length f4 of the fourth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the optical imaging lens satisfy 2.5 < (f4+ f6)/f < 3.2.
4. The optical imaging lens according to claim 1, characterized in that an effective focal length f3 of the third lens, a radius of curvature R5 of an object side surface of the third lens, and a radius of curvature R6 of an image side surface of the third lens satisfy 1.3 < f3/(R5+ R6) < 2.3.
5. The optical imaging lens of claim 1, wherein a radius of curvature R11 of the object-side surface of the sixth lens, a radius of curvature R12 of the image-side surface of the sixth lens, a radius of curvature R13 of the object-side surface of the seventh lens, and a radius of curvature R14 of the image-side surface of the seventh lens satisfy 0.2 < (R11+ R12)/(R13+ R14) < 1.5.
6. 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, and a center thickness CT3 of the third lens on the optical axis satisfy 0.6 < CT1/(CT2+ CT3) < 1.1.
7. The optical imaging lens according to claim 1, further comprising a stop disposed at the optical axis, wherein a distance SL between the stop and an imaging surface of the optical imaging lens on the optical axis and a distance TTL between an object side surface of the first lens and the imaging surface on the optical axis satisfy 0.4 < SL/TTL < 0.7.
8. The optical imaging lens according to claim 1, characterized in that a combined focal length f23 of the second lens and the third lens and a combined focal length f56 of the fifth lens and the sixth lens satisfy 0.5 < f56/f23 < 1.3.
9. The optical imaging lens of claim 1, wherein an on-axis distance SAG42 from an intersection point of an image-side surface of the fourth lens and the optical axis to an effective radius vertex of an image-side surface of the fourth lens, an on-axis distance SAG51 from an intersection point of an object-side surface of the fifth lens and the optical axis to an effective radius vertex of an object-side surface of the fifth lens, and an on-axis distance SAG62 from an intersection point of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of an image-side surface of the sixth lens satisfy 0.6 < SAG62/(SAG42+ SAG51) < 1.2.
10. The optical imaging lens of claim 1, wherein a central thickness CT7 of the seventh lens on the optical axis, an on-axis distance SAG71 of an intersection point of an object side surface of the seventh lens and the optical axis to an effective radius vertex of an object side surface of the seventh lens, and an on-axis distance SAG72 of an intersection point of an image side surface of the seventh lens and the optical axis to an effective radius vertex of an image side surface of the seventh lens satisfy 1.0 < (SAG72-SAG71)/CT7 < 2.4.
11. The optical imaging lens according to any one of claims 1 to 10, wherein an effective half aperture DT11 of an object side surface of the first lens and an effective half aperture DT72 of an image side surface of the seventh lens satisfy 1.0 < DT11/DT72 < 1.5.
12. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:
a first lens having a negative refractive power, an object side surface of which is a concave surface;
a second lens having an optical power;
a third lens having optical power;
a fourth lens having a positive optical power;
a fifth lens having a negative refractive power, an image-side surface of which is concave;
a sixth lens having positive optical power;
a seventh lens having optical power;
an effective focal length f3 of the third lens, a radius of curvature R5 of an object-side surface of the third lens, and a radius of curvature R6 of an image-side surface of the third lens satisfy 1.3 < f3/(R5+ R6) < 2.3.
13. The optical imaging lens of claim 12, wherein the effective focal length f1 of the first lens, the effective focal length f5 of the fifth lens, the radius of curvature R1 of the object-side surface of the first lens, and the radius of curvature R5 of the object-side surface of the third lens satisfy 1.0 < (f1+ f5)/(R1-R5) < 1.4.
14. The optical imaging lens of claim 12, wherein the effective focal length f4 of the fourth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the optical imaging lens satisfy 2.5 < (f4+ f6)/f < 3.2.
15. The optical imaging lens of claim 14 wherein the maximum field angle FOV of the optical imaging lens satisfies 105 ° ≦ FOV ≦ 135 °.
16. The optical imaging lens of claim 12, wherein a radius of curvature R11 of the object-side surface of the sixth lens, a radius of curvature R12 of the image-side surface of the sixth lens, a radius of curvature R13 of the object-side surface of the seventh lens, and a radius of curvature R14 of the image-side surface of the seventh lens satisfy 0.2 < (R11+ R12)/(R13+ R14) < 1.5.
17. The optical imaging lens according to claim 12, 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, and a center thickness CT3 of the third lens on the optical axis satisfy 0.6 < CT1/(CT2+ CT3) < 1.1.
18. The optical imaging lens according to claim 12, further comprising a stop disposed at the optical axis, wherein a distance SL between the stop and an imaging surface of the optical imaging lens on the optical axis and a distance TTL between an object side surface of the first lens and the imaging surface on the optical axis satisfy 0.4 < SL/TTL < 0.7.
19. The optical imaging lens of claim 12, wherein a combined focal length f23 of the second and third lenses and a combined focal length f56 of the fifth and sixth lenses satisfy 0.5 < f56/f23 < 1.3.
20. The optical imaging lens of claim 12, wherein an on-axis distance SAG42 from an intersection point of an image-side surface of the fourth lens and the optical axis to an effective radius vertex of an image-side surface of the fourth lens, an on-axis distance SAG51 from an intersection point of an object-side surface of the fifth lens and the optical axis to an effective radius vertex of an object-side surface of the fifth lens, and an on-axis distance SAG62 from an intersection point of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of an image-side surface of the sixth lens satisfy 0.6 < SAG62/(SAG42+ SAG51) < 1.2.
21. The optical imaging lens of claim 12, wherein a central thickness CT7 of the seventh lens on the optical axis, an on-axis distance SAG71 of an intersection point of an object side surface of the seventh lens and the optical axis to an effective radius vertex of the object side surface of the seventh lens, and an on-axis distance SAG72 of an intersection point of an image side surface of the seventh lens and the optical axis to an effective radius vertex of the image side surface of the seventh lens satisfy 1.0 < (SAG72-SAG71)/CT7 < 2.4.
22. The optical imaging lens according to any one of claims 12 to 11, wherein an effective half aperture DT11 of an object side surface of the first lens and an effective half aperture DT72 of an image side surface of the seventh lens satisfy 1.0 < DT11/DT72 < 1.5.
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| CN110850557A (en) * | 2019-12-10 | 2020-02-28 | 浙江舜宇光学有限公司 | Optical imaging lens |
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| CN113138458A (en) * | 2021-04-06 | 2021-07-20 | 江西晶超光学有限公司 | Optical system, image capturing module and electronic equipment |
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| CN115268014A (en) * | 2021-04-29 | 2022-11-01 | 信泰光学(深圳)有限公司 | Wide-angle lens |
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| CN110850557A (en) * | 2019-12-10 | 2020-02-28 | 浙江舜宇光学有限公司 | Optical imaging lens |
| US11874439B2 (en) | 2019-12-10 | 2024-01-16 | Zhejiang Sunny Optical Co., Ltd. | Optical imaging lens including seven lenses of −−++−+−, −+++−+− or −−++−++ refractive powers |
| CN111929875A (en) * | 2020-09-24 | 2020-11-13 | 江西联创电子有限公司 | Fixed focus lens |
| WO2022143648A1 (en) * | 2020-12-29 | 2022-07-07 | 江西联创电子有限公司 | Day-and-night dual-purpose imaging lens |
| CN113138458A (en) * | 2021-04-06 | 2021-07-20 | 江西晶超光学有限公司 | Optical system, image capturing module and electronic equipment |
| CN115268014A (en) * | 2021-04-29 | 2022-11-01 | 信泰光学(深圳)有限公司 | Wide-angle lens |
| CN115268014B (en) * | 2021-04-29 | 2024-10-18 | 信泰光学(深圳)有限公司 | Wide-angle lens |
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