CN210015282U - Optical imaging lens - Google Patents
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- CN210015282U CN210015282U CN201920768793.XU CN201920768793U CN210015282U CN 210015282 U CN210015282 U CN 210015282U CN 201920768793 U CN201920768793 U CN 201920768793U CN 210015282 U CN210015282 U CN 210015282U
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Abstract
The utility model discloses an optical imaging lens, it includes according to the preface by thing side to picture side along the optical axis: the first lens with focal power, the object side surface of the first lens is a concave surface, and the image side surface of the first lens is a convex surface; a second lens having an optical power; a third lens having a positive optical power; a fourth lens having a negative optical power; a fifth lens having a positive optical power; a sixth lens element having a refractive power, the object-side surface of which is convex and the image-side surface of which is concave; and a seventh lens having a negative optical power.
Description
Technical Field
The invention relates to an optical imaging lens, in particular to an optical imaging lens comprising seven lenses.
Background
With the rapid development of portable electronic devices, users have increasingly stringent requirements for imaging quality and other photographing functions of portable electronic devices such as smart phones. Further improvement of imaging quality by increasing the number of lenses is a major approach to improving mobile phone imaging. However, the improvement of the imaging quality by simply increasing the number of the lenses is obviously not beneficial to the miniaturization of the lens, and the requirement of the market on the light weight of the mobile phone is not met.
On the other hand, with the diversification of mobile phone applications, users want to capture more scenes in a short distance when using mobile phones for capturing, and therefore, it is necessary to provide a high-definition large-image-plane wide-angle lens to meet the demand. How to design a lens with higher imaging quality, a sensor capable of matching higher pixels and a stronger image processing technology under the condition that the size of the lens is not changed and even becomes smaller is a problem to be solved at present.
SUMMERY OF THE UTILITY MODEL
The present application provides an optical imaging lens, such as a large-image-plane wide-angle lens, applicable to portable electronic products, which can solve at least or partially at least one of the above-mentioned disadvantages of the related art.
In one aspect, the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the first lens with focal power, the object side surface of the first lens can be a concave surface, and the image side surface of the first lens can be a convex surface; a second lens having an optical power; a third lens having a positive optical power; a fourth lens having a negative optical power; a fifth lens having a positive optical power; a sixth lens element having a refractive power, the object-side surface of which is convex and the image-side surface of which is concave; and a seventh lens having a negative optical power.
In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f3 of the third lens can satisfy 0.3 < f5/f3 < 1.4.
In one embodiment, the effective focal length f7 of the seventh lens and the effective focal length f4 of the fourth lens may satisfy 0.1 < f7/f4 < 1.3.
In one embodiment, the radius of curvature of the object-side surface R3, the radius of curvature of the image-side surface R4, and the effective focal length f2 of the second lens may satisfy 0.1 < (R3+ R4)/f2 < 1.0.
In one embodiment, a radius of curvature R7 of the object-side surface of the fourth lens and a radius of curvature R8 of the image-side surface of the fourth lens may satisfy 0.3 < R7/R8 < 0.8.
In one embodiment, a distance T34 between the third lens and the fourth lens on the optical axis, a distance T67 between the sixth lens and the seventh lens on the optical axis, and a distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis may satisfy 0.8 < (T34+ T67)/TTL 5 < 1.4.
In one embodiment, a central thickness CT3 of the third lens on the optical axis, 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 CT4 of the fourth lens on the optical axis may satisfy 0.4 < CT3/(CT1+ CT2+ CT4) < 1.1.
In one embodiment, the effective half aperture DT11 of the object side surface of the first lens and the effective half aperture DT21 of the object side surface of the second lens can satisfy 1.1 < DT11/DT21 < 1.7.
In one embodiment, the effective half-aperture DT32 of the image-side surface of the third lens and the effective half-aperture DT22 of the image-side surface of the second lens satisfy 1.0 < DT32/DT22 < 1.4.
In one embodiment, the total effective focal length f of the optical imaging lens, the radius of curvature of the object-side surface of the first lens, R1, and the radius of curvature of the image-side surface of the first lens, R2, may satisfy-0.5 < f/(R1+ R2) < 0.
In one embodiment, ImgH, which is half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, may satisfy 6.0mm < ImgH < 7.0 mm.
In one embodiment, the total effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens may satisfy 2.3mm < f tan (FOV/4) < 2.9 mm.
In one embodiment, a maximum field angle FOV of the optical imaging lens may satisfy 95 ° < FOV < 125 °.
In one embodiment, a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens may satisfy TTL/ImgH < 1.3.
The optical imaging lens comprises seven lenses, and at least one of the beneficial effects of ultra-thinning, high imaging quality, large image surface, wide angle and the like is achieved by reasonably distributing the focal power, the surface type, the center thickness of each lens, the on-axis distance between each lens and the like.
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 axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 7.
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 object side surface of the first lens may be concave, and the image side surface may be convex; the third lens may have a positive optical power; the fourth lens may have a negative optical power; the fifth lens may have a positive optical power; the object side surface of the sixth lens element can be convex, and the image side surface can be concave; the seventh lens may have a negative optical power.
The first lens with the concave object side surface and the convex image side surface plays a role in light convergence, and can improve the focal length to the maximum extent on the premise of keeping good convergence of light by being matched with the six lenses at the back, and meanwhile, the size of the lens can be reduced. The third lens and the fifth lens are arranged to have positive focal power, so that the capability of the lens group for correcting aberration can be effectively improved, and the sensitivity of the system can be effectively reduced. The negative focal power of the fourth lens and the negative focal power of the seventh lens are matched, so that the focal power distribution of the whole lens group is facilitated, and the excessive concentration of the focal power is avoided. In addition, the sixth lens with the convex side surface and the concave image side surface is favorable for balancing vertical axis chromatic aberration and transverse chromatic aberration of the lens group, and ensures the imaging quality.
In an exemplary embodiment, the second lens may have a positive optical power, and the object-side surface thereof may be convex and the image-side surface thereof may be concave.
In an exemplary embodiment, the image-side surface of the third lens may be convex; the image side surface of the fifth lens can be convex; the image side surface of the seventh lens element can be concave.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 95 ° < FOV < 125 °, where FOV is a maximum angle of view of the optical imaging lens. More specifically, the FOV can further satisfy 99.3 DEG ≦ FOV ≦ 120 deg. The imaging height of the system can be improved and the overlarge aberration of the marginal field of view can be avoided by adjusting the field angle, and the wide-angle lens is beneficial to better keeping the characteristics of wide imaging range and high imaging quality of the system.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression TTL/ImgH < 1.3, where TTL is a distance on an optical axis from an object side surface of the first lens element to an imaging surface of the optical imaging lens, and ImgH is a half of a diagonal length of an effective pixel area on the optical axis of the imaging surface of the optical imaging lens. More specifically, TTL and ImgH can further satisfy 1.15 ≦ TTL/ImgH ≦ 1.25. The lens group satisfies the condition TTL/ImgH < 1.3, can effectively reduce the total size of the lens group, and realizes the ultrathin characteristic and miniaturization of the lens group, thereby enabling the lens group to be better suitable for more and more ultrathin electronic products in the market.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.3 < f5/f3 < 1.4, where f5 is an effective focal length of the fifth lens and f3 is an effective focal length of the third lens. More specifically, f5 and f3 can further satisfy 0.34. ltoreq. f5/f 3. ltoreq.1.32. Through the effective focal length of the third lens and the fifth lens which are reasonably adjusted, on one hand, the focal power of the lens group can be more reasonably distributed, excessive concentration is avoided, the imaging quality of the system is favorably improved, the sensitivity of the system is favorably reduced, and on the other hand, the ultrathin characteristic of the lens group can be kept.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.1 < f7/f4 < 1.3, where f7 is an effective focal length of the seventh lens and f4 is an effective focal length of the fourth lens. More specifically, f7 and f4 can further satisfy 0.14. ltoreq. f7/f 4. ltoreq.1.22. By reasonably controlling the ratio of the effective focal lengths of the fourth lens and the seventh lens of the lens, the spherical aberration contribution amount of the fourth lens can be controlled within a reasonable range, so that the on-axis field area of the system has better imaging quality.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.1 < (R3+ R4)/f2 < 1.0, where R3 is a radius of curvature of an object-side surface of the second lens, R4 is a radius of curvature of an image-side surface of the second lens, and f2 is an effective focal length of the second lens. More specifically, R3, R4 and f2 further may satisfy 0.16 ≦ (R3+ R4)/f2 ≦ 0.96. The curvature radius of the object-side surface and the image-side surface of the second lens and the effective focal length of the second lens are reasonably controlled, so that the size of the system can be effectively reduced, the focal power of the system is reasonably distributed, the aberration correction of the following lenses is facilitated, and the second lens can keep good processing manufacturability.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.3 < R7/R8 < 0.8, where R7 is a radius of curvature of an object-side surface of the fourth lens and R8 is a radius of curvature of an image-side surface of the fourth lens. More specifically, R7 and R8 may further satisfy 0.54. ltoreq. R7/R8. ltoreq.0.69. By reasonably distributing the curvature radii of the object side surface and the image side surface of the fourth lens, astigmatism and coma between the fourth lens and the front lenses can be effectively balanced, and the lens can keep better imaging quality. Alternatively, the object-side surface of the fourth lens element can be concave and the image-side surface can be convex.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.8 < (T34+ T67)/TTL 5 < 1.4, where T34 is an axial separation distance between the third lens and the fourth lens, T67 is an axial separation distance between the sixth lens and the seventh lens, and TTL is an axial distance from the object-side surface of the first lens to the image plane. More specifically, T34, T67 and TTL can further satisfy 0.90 ≦ (T34+ T67)/TTL 5 ≦ 1.31. By reasonably controlling the ratio of the air space of the third lens and the fourth lens on the optical axis to the sum of the air space of the sixth lens and the seventh lens on the optical axis to the total optical length, the risk of ghost images of the system can be effectively reduced, and the size compression of the lens group is facilitated.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.4 < CT3/(CT1+ CT2+ CT4) < 1.1, where CT3 is a central thickness of the third lens on the optical axis, 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 CT4 is a central thickness of the fourth lens on the optical axis. More specifically, CT3, CT1, CT2 and CT4 further satisfy 0.46. ltoreq. CT3/(CT1+ CT2+ CT 4). ltoreq.1.04. The first is to help reduce the system size, so that the TTL/EFL ratio is lower; secondly, the spherical aberration of the system is reduced; thirdly, the distortion of the system can be effectively reduced by controlling the medium thicknesses of the first lens, the second lens, the third lens and the fourth lens within a reasonable range, and the ghost risk caused by internal reflection of light rays is reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.1 < DT11/DT21 < 1.7, where DT11 is an effective half aperture of an object side surface of the first lens and DT21 is an effective half aperture of an object side surface of the second lens. More specifically, DT11 and DT21 may further satisfy 1.20 ≦ DT11/DT21 ≦ 1.69. The first is that the system is helpful to raise the height of the imaging plane and the effective focal length of the system; secondly, the process processability of the first lens and the second lens is improved, so that the lens group has higher practicability; third, the system is enabled to better balance aberrations of the marginal field of view.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < DT32/DT22 < 1.4, where DT32 is an effective half aperture of an image side surface of the third lens, and DT22 is an effective half aperture of an image side surface of the second lens. More specifically, DT32 and DT22 may further satisfy 1.14 ≦ DT32/DT22 ≦ 1.38. Through the effective half bore of the image side surface of the reasonable control second lens element and the effective half bore of the image side surface of the third lens element, the imaging surface can be effectively improved, the image quality is improved, the marginal field aberration is improved, and the image quality of the lens group is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-0.5 < f/(R1+ R2) < 0, where f is an effective focal length of the optical imaging lens, R1 is a radius of curvature of an object-side surface of the first lens, and R2 is a radius of curvature of an image-side surface of the first lens. More specifically, f, R1 and R2 may further satisfy-0.48. ltoreq. f/(R1+ R2). ltoreq.0.06. The total effective focal length of the lens and the curvature radiuses of the object side surface and the image side surface of the first lens are reasonably distributed, so that the system has better chromatic aberration correction capability, the sensitivity of the system is reduced, a series of processing problems caused by poor manufacturability of the first lens can be effectively avoided, and the ultra-thin characteristic of the lens is kept.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 6.0mm < ImgH < 7.0mm, where ImgH is half of a diagonal length of an effective pixel area on an optical axis of an imaging plane of the optical imaging lens. More specifically, ImgH can further satisfy 6.30 ≦ ImgH ≦ 6.63. Half of the diagonal length of the effective pixel area on the imaging surface is controlled to be 6.0mm to 7.0mm, so that large image surface imaging is guaranteed, more pixel points are provided, imaging is clear, and high-quality shooting image quality can be guaranteed.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 2.3mm < f tan (FOV/4) < 2.9mm, where f is a total effective focal length of the optical imaging lens and FOV is a maximum angle of view of the optical imaging lens. More specifically, f and FOV may further satisfy 2.33 ≦ f tan (FOV/4 ≦ 2.85. By controlling the conditional expression in a reasonable range, the system can obtain ultrathin characteristics, and meanwhile, the lens has a wider imaging surface, so that the application range of the lens is widened.
In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm. The diaphragm may be disposed at an appropriate position as needed, for example, between the first lens and the second lens, or between the second lens and the third lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element on the imaging surface.
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. The application provides a high-definition large-image-plane wide-angle prime lens.
In the embodiment of the present application, at least one of the mirror surfaces of the respective lenses is an aspherical mirror surface, that is, at least one of 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, and 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, 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.
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 one
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: the lens system comprises 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, a filter E8 and an imaging surface S17.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a convex 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 convex image-side surface S6; the fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10; the sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave 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 light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In the present embodiment, the optical imaging lens may further include a stop STO (not shown) disposed between the first lens E1 and the second lens E2.
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, and the focal length are all millimeters (mm).
TABLE 1
In the present embodiment, the total effective focal length f of the optical imaging lens is 5.49mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17 is 7.84mm, and the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 6.50 mm.
In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 to the seventh lens E7 of the optical imaging lens are aspheric, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric 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; paraxial curvature with c being asphericA ratio, 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 i-th order of the aspherical surface. Table 4 below gives the high-order term coefficients A of the respective aspherical mirror surfaces S1-S14 usable for the optical imaging lens according to embodiment 14、A6、A8、A10、A12、A14、A16、A18And A20。
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -7.4000E-04 | 1.5996E-02 | -7.9600E-03 | 2.5550E-03 | -5.7000E-04 | 5.8100E-05 | 8.3000E-06 | -3.3000E-06 | 2.8862E-07 |
| S2 | -7.0300E-03 | 4.5576E-02 | -4.2640E-02 | 3.0271E-02 | -1.5050E-02 | 4.8270E-03 | -9.2000E-04 | 8.6400E-05 | -2.4771E-06 |
| S3 | -2.8440E-02 | 4.8268E-02 | -8.5320E-02 | 1.1628E-01 | -1.1082E-01 | 6.9200E-02 | -2.6800E-02 | 5.8090E-03 | -5.3768E-04 |
| S4 | -2.0320E-02 | 8.4450E-03 | -5.9700E-03 | 2.1830E-03 | 2.4500E-04 | -9.1000E-04 | 5.1800E-04 | -1.4000E-04 | 1.6648E-05 |
| S5 | -1.1660E-02 | 2.3500E-05 | -5.9800E-03 | 1.1885E-02 | -1.3190E-02 | 8.3910E-03 | -3.0500E-03 | 5.8300E-04 | -4.5008E-05 |
| S6 | -8.2200E-03 | 1.8800E-04 | -3.0000E-03 | 3.2340E-03 | -2.7900E-03 | 1.4570E-03 | -4.3000E-04 | 6.0300E-05 | -2.8115E-06 |
| S7 | -2.9910E-02 | 4.5740E-02 | -6.6030E-02 | 8.5586E-02 | -7.3050E-02 | 3.7844E-02 | -1.1520E-02 | 1.8990E-03 | -1.3029E-04 |
| S8 | -2.8780E-02 | -1.1300E-02 | 2.9251E-02 | -2.0120E-02 | 6.7880E-03 | -1.1600E-03 | 8.2400E-05 | 0.0000E+00 | 0.0000E+00 |
| S9 | 2.9704E-02 | -4.3430E-02 | 3.4133E-02 | -1.7050E-02 | 5.5160E-03 | -1.1800E-03 | 1.6100E-04 | -1.3000E-05 | 4.7391E-07 |
| S10 | 4.0280E-02 | -1.5170E-02 | -3.2300E-03 | 6.4370E-03 | -3.1700E-03 | 8.3200E-04 | -1.2000E-04 | 1.0000E-05 | -3.3602E-07 |
| S11 | 1.0910E-03 | -3.8000E-03 | 6.7900E-04 | -2.6000E-04 | 6.4700E-05 | -7.8000E-06 | 2.8300E-07 | 1.8500E-08 | -1.2625E-09 |
| S12 | -1.9040E-02 | 5.9160E-03 | -3.1900E-03 | 8.0600E-04 | -1.2000E-04 | 1.0600E-05 | -5.7000E-07 | 1.6500E-08 | -2.0115E-10 |
| S13 | -8.1880E-02 | 1.7451E-02 | -3.4100E-03 | 5.4600E-04 | -5.8000E-05 | 3.9000E-06 | -1.6000E-07 | 3.5100E-09 | -3.3333E-11 |
| S14 | -7.7480E-02 | 1.8038E-02 | -3.0600E-03 | 3.4000E-04 | -2.4000E-05 | 1.1100E-06 | -3.1000E-08 | 4.9500E-10 | -3.3842E-12 |
TABLE 2
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the difference in the positions of images made by the lens for light of respective wavelengths. 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 two
An 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: the lens system comprises 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, a filter E8 and an imaging surface S17.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a convex 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 convex image-side surface S6; the fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10; the sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave 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 light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In the present embodiment, the optical imaging lens may further include a stop STO (not shown) disposed between the first lens E1 and the second lens E2.
In the present embodiment, the total effective focal length f of the optical imaging lens is 4.96mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17 is 7.63mm, and the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 6.63 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, 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 | 2.8760E-03 | 1.7090E-02 | -1.6560E-02 | 1.3140E-02 | -7.9000E-03 | 3.1700E-03 | -7.8000E-04 | 1.0700E-04 | -6.1112E-06 |
| S2 | 3.0300E-03 | 3.7724E-02 | -4.6820E-02 | 4.6254E-02 | -3.3720E-02 | 1.6685E-02 | -5.2200E-03 | 9.1600E-04 | -6.8091E-05 |
| S3 | -3.3870E-02 | 4.7053E-02 | -8.4050E-02 | 1.1551E-01 | -1.1082E-01 | 6.9209E-02 | -2.6800E-02 | 5.8050E-03 | -5.5311E-04 |
| S4 | -1.9350E-02 | 7.7780E-03 | -7.7500E-03 | 3.1740E-03 | 2.0700E-04 | -9.3000E-04 | 5.1300E-04 | -1.4000E-04 | 1.7366E-05 |
| S5 | -1.1980E-02 | -2.9000E-03 | -3.4500E-03 | 8.3330E-03 | -1.2360E-02 | 9.7940E-03 | -4.1300E-03 | 8.7500E-04 | -7.2942E-05 |
| S6 | -8.7800E-03 | -7.1900E-03 | 9.9490E-03 | -1.8590E-02 | 1.9358E-02 | -1.1930E-02 | 4.3130E-03 | -8.4000E-04 | 6.8066E-05 |
| S7 | -2.0820E-02 | 6.0622E-02 | -8.8680E-02 | 8.1956E-02 | -5.7750E-02 | 2.9823E-02 | -9.8600E-03 | 1.8090E-03 | -1.3809E-04 |
| S8 | -4.2760E-02 | 4.5792E-02 | -3.2100E-02 | 8.6790E-03 | 1.8300E-04 | -4.8000E-04 | 6.2651E-05 | 0.0000E+00 | 0.0000E+00 |
| S9 | 4.0230E-03 | -1.6990E-02 | 2.0792E-02 | -1.4360E-02 | 5.7390E-03 | -1.4400E-03 | 2.3100E-04 | -2.2000E-05 | 8.8549E-07 |
| S10 | 5.4773E-02 | -5.1900E-02 | 3.2926E-02 | -1.1770E-02 | 2.2000E-03 | -1.6000E-04 | -8.6000E-06 | 2.1000E-06 | -9.3943E-08 |
| S11 | 2.3822E-02 | -3.1560E-02 | 1.3917E-02 | -4.6100E-03 | 1.1210E-03 | -1.9000E-04 | 1.9600E-05 | -1.1000E-06 | 2.7485E-08 |
| S12 | 1.8600E-04 | -1.4370E-02 | 4.0930E-03 | -6.4000E-04 | 6.0500E-05 | -3.3000E-06 | 9.0300E-08 | -6.8000E-10 | -1.1915E-11 |
| S13 | -8.7710E-02 | 1.0663E-02 | 5.0600E-04 | -3.0000E-04 | 3.8800E-05 | -2.7000E-06 | 1.0700E-07 | -2.3000E-09 | 2.1660E-11 |
| S14 | -6.9530E-02 | 1.1511E-02 | -1.2100E-03 | 8.4100E-05 | -4.0000E-06 | 1.3100E-07 | -2.8000E-09 | 3.5700E-11 | -2.0925E-13 |
TABLE 4
Fig. 4A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 2, which represent differences in positions of images made by the lens for light of respective wavelengths. 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 imaging lens according to embodiment 2 can achieve good imaging quality.
EXAMPLE III
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: the lens system comprises 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, a filter E8 and an imaging surface S17.
The first lens element E1 has positive power, and has a concave object-side surface S1 and a convex 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 convex image-side surface S6; the fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10; the sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave 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 light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In the present embodiment, the optical imaging lens may further include a stop STO (not shown) disposed between the first lens E1 and the second lens E2.
In the present embodiment, the total effective focal length f of the optical imaging lens is 5.38mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17 is 7.88mm, and the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 6.30 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, 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
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 9.3630E-03 | 3.1610E-03 | 1.0227E-02 | -1.7640E-02 | 1.3945E-02 | -6.3000E-03 | 1.6200E-03 | -2.2000E-04 | 1.2046E-05 |
| S2 | 9.6670E-03 | 1.7873E-02 | -5.5200E-03 | -6.1200E-03 | 8.9995E-03 | -5.0300E-03 | 1.2470E-03 | -1.0000E-04 | -2.7334E-06 |
| S3 | -3.3280E-02 | 4.7216E-02 | -8.4700E-02 | 1.1570E-01 | -1.1083E-01 | 6.9209E-02 | -2.6800E-02 | 5.8050E-03 | -5.5310E-04 |
| S4 | -1.8650E-02 | 7.5770E-03 | -7.7800E-03 | 3.0830E-03 | 1.5001E-04 | -9.3000E-04 | 5.1300E-04 | -1.4000E-04 | 1.7366E-05 |
| S5 | -1.6260E-02 | -1.7900E-03 | -9.0100E-03 | 2.2774E-02 | -2.8657E-02 | 1.9548E-02 | -7.3300E-03 | 1.4210E-03 | -1.1058E-04 |
| S6 | -8.5100E-03 | -1.0700E-02 | 1.5760E-02 | -2.3670E-02 | 2.2976E-02 | -1.3970E-02 | 5.0820E-03 | -1.0000E-03 | 8.1608E-05 |
| S7 | -9.9100E-03 | 6.1010E-03 | -8.1500E-03 | 5.4960E-03 | -2.3768E-03 | 1.4860E-03 | -8.2000E-04 | 2.3600E-04 | -2.4901E-05 |
| S8 | -2.3270E-02 | 6.2100E-04 | 2.1270E-03 | -1.7700E-03 | 8.6300E-04 | -2.2570E-04 | 2.4848E-05 | 0.0000E+00 | 0.0000E+00 |
| S9 | 1.0713E-02 | -2.3170E-02 | 1.5976E-02 | -6.4400E-03 | 1.5153E-03 | -2.0000E-04 | 1.3200E-05 | -2.6000E-09 | -3.5073E-08 |
| S10 | 3.6562E-02 | -2.7560E-02 | 1.3286E-02 | -3.3900E-03 | 3.1625E-04 | 4.2400E-05 | -1.4000E-05 | 1.2700E-06 | -4.1883E-08 |
| S11 | 9.4900E-03 | -1.7830E-02 | 7.1580E-03 | -2.0500E-03 | 4.2730E-04 | -6.5000E-05 | 6.6500E-06 | -3.8000E-07 | 8.9813E-09 |
| S12 | -9.9400E-03 | -8.5600E-03 | 3.0040E-03 | -5.8000E-04 | 6.3709E-05 | -3.9000E-06 | 1.2500E-07 | -1.6000E-09 | -2.4189E-12 |
| S13 | -7.7310E-02 | 6.9040E-03 | 1.6020E-03 | -5.2000E-04 | 6.7285E-05 | -4.9000E-06 | 2.0900E-07 | -4.9000E-09 | 4.9026E-11 |
| S14 | -6.4280E-02 | 1.1511E-02 | -1.4100E-03 | 1.2000E-04 | -7.0472E-06 | 2.7400E-07 | -6.7000E-09 | 9.2400E-11 | -5.4953E-13 |
TABLE 6
Fig. 6A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 3, which represent differences in positions of images made by the lens for light of respective wavelengths. 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 four
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: the lens system comprises 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, a filter E8 and an imaging surface S17.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a convex 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 convex image-side surface S6; the fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10; the sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave 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 light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In the present embodiment, the optical imaging lens may further include a stop STO (not shown) disposed between the first lens E1 and the second lens E2.
In the present embodiment, the total effective focal length f of the optical imaging lens is 4.91mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17 is 7.70mm, and the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 6.30 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, 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 | 8.1460E-03 | 2.5628E-03 | 6.8751E-03 | -1.0130E-02 | 6.6257E-03 | -2.4700E-03 | 5.2400E-04 | -5.8000E-05 | 2.5400E-06 |
| S2 | 1.0226E-02 | 1.2487E-02 | 4.0169E-03 | -1.6300E-02 | 1.4857E-02 | -6.7700E-03 | 1.5150E-03 | -1.3000E-04 | -7.5000E-07 |
| S3 | -3.5017E-02 | 4.6691E-02 | -8.4066E-02 | 1.1505E-01 | -1.1082E-01 | 6.9209E-02 | -2.6800E-02 | 5.8050E-03 | -5.5000E-04 |
| S4 | -1.8337E-02 | 7.3067E-03 | -8.4542E-03 | 2.8470E-03 | 2.0085E-04 | -9.3000E-04 | 5.1300E-04 | -1.4000E-04 | 1.7400E-05 |
| S5 | -9.8430E-03 | 2.0751E-03 | -1.3327E-02 | 2.1096E-02 | -2.2430E-02 | 1.3893E-02 | -4.8800E-03 | 9.0500E-04 | -6.8000E-05 |
| S6 | -5.1700E-03 | -1.7894E-02 | 3.3280E-02 | -4.8510E-02 | 4.3965E-02 | -2.4850E-02 | 8.4040E-03 | -1.5400E-03 | 1.1800E-04 |
| S7 | -1.0764E-02 | 1.5109E-02 | -4.7920E-03 | -2.4720E-02 | 3.3229E-02 | -1.8950E-02 | 5.6990E-03 | -8.8000E-04 | 5.4000E-05 |
| S8 | -3.0311E-02 | 2.3950E-02 | -2.0320E-02 | 8.0710E-03 | -1.2800E-03 | -1.0238E-05 | 1.7322E-05 | 0.0000E+00 | 0.0000E+00 |
| S9 | 9.3835E-03 | -2.4040E-02 | 2.0500E-02 | -9.8800E-03 | 2.7433E-03 | -4.5000E-04 | 4.1100E-05 | -1.9000E-06 | 2.6100E-08 |
| S10 | 4.8198E-02 | -4.9233E-02 | 3.1224E-02 | -1.1080E-02 | 2.1905E-03 | -2.2000E-04 | 6.8100E-06 | 5.4800E-07 | -3.7000E-08 |
| S11 | 2.0396E-02 | -3.0851E-02 | 1.4898E-02 | -5.1000E-03 | 1.2414E-03 | -2.1000E-04 | 2.1800E-05 | -1.3000E-06 | 3.0400E-08 |
| S12 | -5.4980E-03 | -1.2173E-02 | 4.3346E-03 | -8.5000E-04 | 1.0048E-04 | -7.2000E-06 | 3.0100E-07 | -6.9000E-09 | 6.5200E-11 |
| S13 | -9.0231E-02 | 9.8340E-03 | 8.9089E-04 | -3.6000E-04 | 4.4882E-05 | -3.0000E-06 | 1.1700E-07 | -2.5000E-09 | 2.2200E-11 |
| S14 | -6.6290E-02 | 1.1557E-02 | -1.3381E-03 | 1.0500E-04 | -5.4787E-06 | 1.8700E-07 | -3.9000E-09 | 4.6900E-11 | -2.4000E-13 |
TABLE 8
Fig. 8A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 4, which represent differences in positions of images made by the lens for light of respective wavelengths. 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 five
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: the lens system comprises 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, a filter E8 and an imaging surface S17.
The first lens element E1 has positive power, and has a concave object-side surface S1 and a convex 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 convex image-side surface S6; the fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10; the sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave 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 light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In the present embodiment, the optical imaging lens may further include a stop STO (not shown) disposed between the second lens E2 and the third lens E3.
In the present embodiment, the total effective focal length f of the optical imaging lens is 5.00mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17 is 7.87mm, and the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 6.49 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, 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
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.3854E-02 | 7.8051E-03 | -1.2494E-02 | 1.2124E-02 | -7.2600E-03 | 2.6960E-03 | -6.1000E-04 | 7.7400E-05 | -4.2101E-06 |
| S2 | 2.7870E-02 | -1.1647E-02 | 1.1695E-02 | -4.4200E-03 | -9.7000E-04 | 1.7130E-03 | -7.5000E-04 | 1.5100E-04 | -1.2157E-05 |
| S3 | -2.3389E-03 | -2.4459E-02 | 2.0140E-02 | 4.3770E-03 | -2.4870E-02 | 2.3111E-02 | -1.0570E-02 | 2.4610E-03 | -2.2884E-04 |
| S4 | -3.5877E-02 | 1.4555E-02 | -1.6228E-02 | 1.8052E-02 | -1.8170E-02 | 1.4150E-02 | -7.1900E-03 | 2.0520E-03 | -2.4147E-04 |
| S5 | -1.6506E-02 | -5.4905E-03 | 1.5315E-03 | -1.4000E-03 | 1.0940E-03 | -1.2300E-03 | 8.6900E-04 | -2.9000E-04 | 3.7984E-05 |
| S6 | -1.6656E-02 | -1.4077E-02 | 1.9273E-02 | -2.3860E-02 | 1.8488E-02 | -9.0200E-03 | 2.6980E-03 | -4.5000E-04 | 3.2915E-05 |
| S7 | 6.1715E-03 | -1.3761E-02 | 2.1065E-02 | -2.1010E-02 | 1.2125E-02 | -3.5400E-03 | 4.1600E-04 | 1.2700E-05 | -4.6599E-06 |
| S8 | 6.7642E-04 | -1.4984E-02 | 1.4752E-02 | -1.1240E-02 | 5.5160E-03 | -1.6200E-03 | 2.8100E-04 | -2.7000E-05 | 1.1727E-06 |
| S9 | 2.1346E-02 | -1.3982E-02 | 6.4795E-03 | -2.9200E-03 | 9.3800E-04 | -2.0000E-04 | 2.7800E-05 | -2.2000E-06 | 8.0569E-08 |
| S10 | 3.5059E-02 | -2.2130E-02 | 1.4288E-02 | -6.2300E-03 | 1.6930E-03 | -2.9000E-04 | 3.1400E-05 | -1.9000E-06 | 5.0030E-08 |
| S11 | 1.4054E-02 | -1.8517E-02 | 7.3323E-03 | -2.1700E-03 | 4.5100E-04 | -6.2000E-05 | 5.2200E-06 | -2.4000E-07 | 4.7979E-09 |
| S12 | -5.6183E-03 | -7.3294E-03 | 1.6593E-03 | -1.8000E-04 | 8.7100E-06 | 1.7500E-07 | -4.1000E-08 | 1.8300E-09 | -2.8012E-11 |
| S13 | -2.2206E-02 | -3.2388E-03 | 1.3155E-03 | -1.6000E-04 | 1.0200E-05 | -3.9000E-07 | 8.8700E-09 | -1.1000E-10 | 6.0113E-13 |
| S14 | -1.1846E-02 | -1.5644E-03 | 3.7128E-04 | -3.4000E-05 | 1.7500E-06 | -5.4000E-08 | 9.6500E-10 | -8.7000E-12 | 2.6727E-14 |
Fig. 10A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 5, which represent differences in positions of images made by the lens for light of respective wavelengths. 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 six
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: the lens system comprises 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, a filter E8 and an imaging surface S17.
The first lens element E1 has positive power, and has a concave object-side surface S1 and a convex 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 concave object-side surface S5 and a convex image-side surface S6; the fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10; the sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12; the seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14; filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In the present embodiment, the optical imaging lens may further include a stop STO (not shown) disposed between the first lens E1 and the second lens E2.
In the present embodiment, the total effective focal length f of the optical imaging lens is 5.64mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17 is 7.90mm, and the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 6.54 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, 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 | 1.5748E-02 | -6.1008E-05 | -8.2000E-04 | 1.1930E-03 | -6.4107E-04 | 1.5700E-04 | -1.2000E-05 | -1.6000E-06 | 2.4800E-07 |
| S2 | 2.9984E-02 | -2.0529E-02 | 2.8985E-02 | -2.6880E-02 | 1.7261E-02 | -7.4400E-03 | 2.0340E-03 | -3.2000E-04 | 2.1300E-05 |
| S3 | 8.3716E-03 | -1.6103E-02 | 1.9049E-02 | -8.3300E-03 | -3.5685E-03 | 7.4650E-03 | -4.5500E-03 | 1.3390E-03 | -1.6000E-04 |
| S4 | -9.3521E-03 | -2.7242E-02 | 1.1174E-01 | -2.4132E-01 | 3.1575E-01 | -2.5273E-01 | 1.2102E-01 | -3.1760E-02 | 3.5000E-03 |
| S5 | -2.1481E-02 | 2.4789E-02 | -9.3620E-02 | 1.8865E-01 | -2.3299E-01 | 1.7920E-01 | -8.3790E-02 | 2.1796E-02 | -2.4300E-03 |
| S6 | -2.8713E-02 | -7.1822E-03 | 1.7838E-02 | -2.9640E-02 | 3.1411E-02 | -2.0430E-02 | 8.0310E-03 | -1.8000E-03 | 1.7600E-04 |
| S7 | -7.0263E-02 | 5.6532E-02 | -1.6170E-01 | 2.5228E-01 | -2.4099E-01 | 1.4505E-01 | -5.3320E-02 | 1.0858E-02 | -9.3000E-04 |
| S8 | -3.5424E-02 | 1.9045E-02 | -3.3970E-02 | 3.4784E-02 | -2.1727E-02 | 8.6570E-03 | -2.1500E-03 | 3.0100E-04 | -1.8000E-05 |
| S9 | -8.7899E-03 | 2.6278E-02 | -2.3570E-02 | 1.2364E-02 | -4.2760E-03 | 9.6900E-04 | -1.4000E-04 | 1.1000E-05 | -3.7000E-07 |
| S10 | 2.3354E-02 | -7.1662E-03 | 5.4900E-04 | 9.0100E-04 | -4.9083E-04 | 1.2500E-04 | -1.8000E-05 | 1.2800E-06 | -3.8000E-08 |
| S11 | 3.4333E-03 | -1.4162E-02 | 5.0660E-03 | -1.1300E-03 | 1.6797E-04 | -1.8000E-05 | 1.3900E-06 | -6.6000E-08 | 1.3600E-09 |
| S12 | -1.6563E-02 | -3.6001E-03 | 1.6340E-03 | -3.2000E-04 | 3.7188E-05 | -2.6000E-06 | 1.1400E-07 | -2.8000E-09 | 2.9100E-11 |
| S13 | -8.8237E-03 | -3.7085E-03 | 1.1750E-03 | -1.4000E-04 | 9.4877E-06 | -3.9000E-07 | 9.5700E-09 | -1.3000E-10 | 7.8100E-13 |
| S14 | -3.2948E-02 | 5.1491E-03 | -6.9000E-04 | 6.9200E-05 | -4.9128E-06 | 2.3400E-07 | -7.0000E-09 | 1.2100E-10 | -8.9000E-13 |
TABLE 12
Fig. 12A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 6, which represent differences in positions of images made by the lens for light of respective wavelengths. 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 seven
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: the lens system comprises 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, a filter E8 and an imaging surface S17.
The first lens element E1 has negative power, and has a concave object-side surface S1 and a convex 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 convex image-side surface S6; the fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8; the fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10; the sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave 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 light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In the present embodiment, the optical imaging lens may further include a stop STO (not shown) disposed between the first lens E1 and the second lens E2.
In the present embodiment, the total effective focal length f of the optical imaging lens is 4.94mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17 is 7.60mm, and the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 6.30 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, 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
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 5.7022E-03 | 8.6580E-03 | -3.2578E-03 | 9.5400E-05 | 2.4000E-04 | -2.7000E-06 | -5.0000E-05 | 1.5400E-05 | -1.3965E-06 |
| S2 | 6.8267E-03 | 2.2449E-02 | -1.0077E-02 | -3.0900E-03 | 6.9220E-03 | -3.7900E-03 | 8.4200E-04 | -4.5000E-05 | -5.2368E-06 |
| S3 | -3.4746E-02 | 4.6687E-02 | -8.4170E-02 | 1.1502E-01 | -1.1082E-01 | 6.9209E-02 | -2.6800E-02 | 5.8050E-03 | -5.5311E-04 |
| S4 | -1.8056E-02 | 7.6720E-03 | -8.3497E-03 | 2.7500E-03 | 1.4500E-04 | -9.3000E-04 | 5.1300E-04 | -1.4000E-04 | 1.7366E-05 |
| S5 | -8.5683E-03 | 8.2450E-03 | -3.2714E-02 | 5.0280E-02 | -4.7150E-02 | 2.5978E-02 | -8.2500E-03 | 1.4040E-03 | -9.8535E-05 |
| S6 | -7.0075E-03 | -8.1100E-03 | 1.3818E-02 | -2.5410E-02 | 2.6256E-02 | -1.6130E-02 | 5.7560E-03 | -1.0900E-03 | 8.5308E-05 |
| S7 | -3.8490E-04 | -1.8130E-02 | 3.1280E-02 | -3.1550E-02 | 1.6511E-02 | -3.6900E-03 | -8.2000E-05 | 1.8200E-04 | -2.2560E-05 |
| S8 | -1.8210E-02 | -1.4439E-02 | 2.4945E-02 | -1.8990E-02 | 7.4970E-03 | -1.4800E-03 | 1.1800E-04 | 0.0000E+00 | 0.0000E+00 |
| S9 | 7.7368E-03 | -1.9800E-02 | 1.5120E-02 | -5.8400E-03 | 9.3500E-04 | 3.2800E-05 | -3.3000E-05 | 4.3200E-06 | -1.8579E-07 |
| S10 | 3.5023E-02 | -2.0350E-02 | 4.4862E-03 | 2.7960E-03 | -2.2000E-03 | 6.4100E-04 | -9.5000E-05 | 7.2200E-06 | -2.2069E-07 |
| S11 | 1.4096E-02 | -2.2190E-02 | 9.5647E-03 | -3.1100E-03 | 7.5300E-04 | -1.3000E-04 | 1.3800E-05 | -8.1000E-07 | 1.9719E-08 |
| S12 | -5.6334E-03 | -1.1750E-02 | 4.0653E-03 | -7.8000E-04 | 8.9300E-05 | -6.2000E-06 | 2.5000E-07 | -5.4000E-09 | 4.6523E-11 |
| S13 | -8.9375E-02 | 9.5100E-03 | 9.5028E-04 | -3.7000E-04 | 4.5100E-05 | -3.0000E-06 | 1.1500E-07 | -2.4000E-09 | 2.1520E-11 |
| S14 | -7.3862E-02 | 1.3326E-02 | -1.5008E-03 | 1.0700E-04 | -4.6000E-06 | 1.1400E-07 | -1.2000E-09 | -2.4000E-12 | 1.1207E-13 |
TABLE 14
Fig. 14A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 7, which represent differences in positions of images made by the lens for light of respective wavelengths. 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.
In summary, examples 1 to 7 each satisfy the relationship shown in table 15.
| Conditions/examples | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| FOV(°) | 100.7 | 108.0 | 99.3 | 114.0 | 100.1 | 99.9 | 120.0 |
| TTL/ImgH | 1.21 | 1.15 | 1.25 | 1.22 | 1.21 | 1.21 | 1.21 |
| f5/f3 | 1.06 | 0.94 | 1.32 | 1.22 | 0.79 | 0.34 | 1.23 |
| f7/f4 | 0.88 | 1.15 | 0.95 | 1.17 | 1.22 | 0.14 | 1.01 |
| (R3+R4)/f2 | 0.52 | 0.53 | 0.22 | 0.16 | 0.71 | 0.96 | 0.19 |
| R7/R8 | 0.60 | 0.54 | 0.56 | 0.56 | 0.57 | 0.69 | 0.56 |
| (T34+T67)/TTL*5 | 1.31 | 1.08 | 1.25 | 1.17 | 1.30 | 0.90 | 1.17 |
| CT3/(CT1+CT2+CT4) | 0.74 | 1.02 | 0.87 | 1.04 | 0.76 | 0.46 | 0.95 |
| DT11/DT21 | 1.34 | 1.52 | 1.21 | 1.20 | 1.27 | 1.40 | 1.69 |
| DT32/DT22 | 1.14 | 1.38 | 1.19 | 1.22 | 1.24 | 1.14 | 1.38 |
| f/(R1+R2) | -0.48 | -0.46 | -0.06 | -0.33 | -0.38 | -0.19 | -0.39 |
| ImgH(mm) | 6.50 | 6.63 | 6.30 | 6.30 | 6.49 | 6.54 | 6.30 |
| f*tan(FOV/4)(mm) | 2.58 | 2.53 | 2.49 | 2.67 | 2.33 | 2.63 | 2.85 |
The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (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 the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (14)
1. The optical imaging lens, in order from an object side to an image side along an optical axis, comprises:
the first lens with focal power, the object side surface of the first lens is a concave surface, and the image side surface of the first lens is a convex surface;
a second lens having an optical power;
a third lens having a positive optical power;
a fourth lens having a negative optical power;
a fifth lens having a positive optical power;
a sixth lens element having a refractive power, the object-side surface of which is convex and the image-side surface of which is concave; and
a seventh lens having a negative optical power.
2. The optical imaging lens of claim 1, wherein the effective focal length f5 of the fifth lens and the effective focal length f3 of the third lens satisfy 0.3 < f5/f3 < 1.4.
3. The optical imaging lens of claim 1, wherein an effective focal length f7 of the seventh lens and an effective focal length f4 of the fourth lens satisfy 0.1 < f7/f4 < 1.3.
4. The optical imaging lens of claim 1, wherein the radius of curvature of the object-side surface of the second lens, R3, the radius of curvature of the image-side surface of the second lens, R4, and the effective focal length f2 of the second lens satisfy 0.1 < (R3+ R4)/f2 < 1.0.
5. The optical imaging lens of claim 1, wherein a radius of curvature R7 of an object-side surface of the fourth lens and a radius of curvature R8 of an image-side surface of the fourth lens satisfy 0.3 < R7/R8 < 0.8.
6. The optical imaging lens of claim 1, wherein a distance T34 between the third lens and the fourth lens on the optical axis, a distance T67 between the sixth lens and the seventh lens on the optical axis, and a distance TTL between an object side surface of the first lens and an imaging surface of the optical imaging lens on the optical axis satisfy 0.8 < (T34+ T67)/TTL 5 < 1.4.
7. The optical imaging lens according to claim 1, wherein a center thickness CT3 of the third lens on the optical axis, 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 CT4 of the fourth lens on the optical axis satisfy 0.4 < CT3/(CT1+ CT2+ CT4) < 1.1.
8. The optical imaging lens of claim 1, wherein an effective half aperture DT11 of the object side surface of the first lens and an effective half aperture DT21 of the object side surface of the second lens satisfy 1.1 < DT11/DT21 < 1.7.
9. The optical imaging lens of claim 1, wherein an effective half-aperture DT32 of the image side surface of the third lens and an effective half-aperture DT22 of the image side surface of the second lens satisfy 1.0 < DT32/DT22 < 1.4.
10. The optical imaging lens of claim 1, characterized in that a total effective focal length f of the optical imaging lens, a radius of curvature R1 of an object-side surface of the first lens, and a radius of curvature R2 of an image-side surface of the first lens satisfy-0.5 < f/(R1+ R2) < 0.
11. The optical imaging lens according to any one of claims 1 to 10, wherein ImgH, which is half the diagonal length of an effective pixel area on an imaging plane of the optical imaging lens, satisfies 6.0mm < ImgH < 7.0 mm.
12. The optical imaging lens according to any one of claims 1 to 10, characterized in that the total effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens satisfy 2.3mm < f tan (FOV/4) < 2.9 mm.
13. The optical imaging lens according to any one of claims 1 to 10, characterized in that a maximum field angle FOV of the optical imaging lens satisfies 95 ° < FOV < 125 °.
14. The optical imaging lens of claim 11, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy TTL/ImgH < 1.3.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221402A (en) * | 2019-05-27 | 2019-09-10 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN113791489A (en) * | 2021-11-16 | 2021-12-14 | 江西联益光学有限公司 | Optical lens |
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| CN110221402A (en) * | 2019-05-27 | 2019-09-10 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN110221402B (en) * | 2019-05-27 | 2024-07-26 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN113791489A (en) * | 2021-11-16 | 2021-12-14 | 江西联益光学有限公司 | Optical lens |
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