CN114967073A - Short-focus telescopic optical lens - Google Patents

Short-focus telescopic optical lens Download PDF

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CN114967073A
CN114967073A CN202210752971.6A CN202210752971A CN114967073A CN 114967073 A CN114967073 A CN 114967073A CN 202210752971 A CN202210752971 A CN 202210752971A CN 114967073 A CN114967073 A CN 114967073A
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lens
short
focus
paraxial region
optical lens
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CN114967073B (en
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许智程
谭沿河
姚雅兰
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Dongguan Jingcai Optics Co ltd
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Dongguan Jingcai Optics Co ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses

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Abstract

The invention provides a short-focus telescopic optical lens, which sequentially comprises the following components from an object side to an image side: the lens comprises a first lens with negative focal power, a second lens with negative focal power, a convex surface at the position close to the optical axis of the object side surface of the second lens, and a concave surface at the position close to the optical axis of the image side surface of the second lens; an aperture; the third lens is provided with positive focal power, the object side surface of the third lens is a convex surface at the position close to the optical axis, and the image side surface of the third lens is a convex surface at the position close to the optical axis; the object side surface of the fourth lens is a concave surface at the paraxial region, and the image side surface of the fourth lens is a convex surface at the paraxial region; the object side surface of the fifth lens is a concave surface at the paraxial region, and the image side surface of the fifth lens is a convex surface at the paraxial region; the near-optical axis of the object side surface of the sixth lens is a convex surface, and the near-optical axis of the image side surface of the sixth lens is a concave surface; the following conditions are satisfied: 7.00< TTL < 7.01; 2.40mm < EFL <2.55 mm; 2.22< Fno < 2.28; HFOV is 42 degrees. On the basis of ensuring the imaging quality, the lens is small in size.

Description

Short-focus telescopic optical lens
Technical Field
The invention relates to the technical field of optical lenses, in particular to a short-focus telescopic optical lens.
Background
The wide-angle lens is also called a short-focus lens. The wide-angle lens is divided into a common wide-angle lens and an ultra wide-angle lens. The wide-angle lens has the advantages of short focal length and large visual angle, can shoot a wide scene at a short distance, has a more prominent prospect, has a depth of field range which is significantly larger than that of a standard lens and a telephoto lens, and has strong depth feeling of the picture. With the development of science and technology, the scene shooting device is gradually developed, the photosensitive element of the optical system of the scene shooting device is not only a photosensitive coupling element or a complementary metal oxide semiconductor element, and with the refinement of semiconductor processing technology, the pixel size of the photosensitive element is reduced, and the optical system tends to have higher pixels and higher imaging quality. In order to meet this trend, a high image quality, a small size, and a telescopic function are also required for an object photographing device mounted on an image pickup device such as a computer, a communication and consumer electronics product, a mobile phone, and a digital camera. In the optical lens with the function in the prior art, the number of lenses is generally large, and the miniaturization and the light weight of the lens are not facilitated on the basis of ensuring the imaging quality.
Disclosure of Invention
Aiming at the problems, the invention provides the short-focus telescopic optical lens which is small in size on the basis of ensuring the imaging quality.
In order to achieve the purpose, the invention is solved by the following technical scheme:
a short-focus telescopic optical lens includes, in order from an object side to an image side:
the lens comprises a first lens with negative focal power, a second lens and a third lens, wherein the object side surface of the first lens is a convex surface at the paraxial region, and the image side surface of the first lens is a concave surface at the paraxial region;
the second lens is provided with negative focal power, the near-optical axis of the object side surface of the second lens is a convex surface, and the near-optical axis of the image side surface of the second lens is a concave surface;
an aperture;
the third lens is provided with positive focal power, the object side surface of the third lens is a convex surface at the paraxial region, and the image side surface of the third lens is a convex surface at the paraxial region;
the object side surface of the fourth lens is a concave surface at the paraxial region, and the image side surface of the fourth lens is a convex surface at the paraxial region;
the optical lens comprises a fifth lens with positive focal power, wherein the object side surface of the fifth lens is concave at the paraxial region, and the image side surface of the fifth lens is convex at the paraxial region;
the optical lens comprises a sixth lens with negative focal power, wherein the object side surface of the sixth lens is a convex surface at the paraxial region, and the image side surface of the sixth lens is a concave surface at the paraxial region;
the short-focus telescopic optical lens meets the following conditions:
7.00< TTL < 7.01; wherein TTL is the total lens length;
2.40mm < EFL <2.55 mm; the EFL is the effective focal length of the short-focus optical lens;
2.22< Fno < 2.28; wherein Fno is the aperture value of the short-focus optical lens;
HFOV is 42 degrees; wherein the HFOV is a half field angle of the short-focus optical lens.
Further, the short-focus telescopic optical lens meets the following conditions: 2.16< ImgH < 2.18; wherein ImgH is image height.
Further, the short-focus telescopic optical lens meets the following conditions: -5.96mm < f12< -5.98 mm; wherein f12 is the combined focal length of the first lens and the second lens.
Further, the short-focus telescopic optical lens meets the following conditions: 2.19< f3456< 2.22; wherein f3456 is the combined focal length of the fourth lens, the fifth lens and the sixth lens of the third lens.
Further, the short-focus telescopic optical lens meets the following conditions: -2.73< f12/f3456< -2.69.
Further, the short-focus telescopic optical lens meets the following conditions: -2.45< f12/EFL < -2.38.
Further, the short-focus telescopic optical lens meets the following conditions: 0.308< ImgH/TTL < 0.310.
Further, the short-focus telescopic optical lens meets the following conditions: 7.658< R3R 4/R9R 10< 7.887; where R3 is the radius of curvature of the second lens object-side surface L2a, R4 is the radius of curvature of the second lens image-side surface L2b, R9 is the radius of curvature of the fifth lens object-side surface L5a, and R10 is the radius of curvature of the fifth lens image-side surface L5 b.
The invention has the beneficial effects that: the structure adopts six lenses for imaging in a matching way, the number of the lenses is small, the production cost is favorably reduced, the total lens length is in the range of 7.00-7.01, the half field angle is 42 degrees, and the lens volume is small on the basis of ensuring the imaging quality.
Drawings
Fig. 1 is a schematic structural diagram of a short-focus and telescopic optical lens of embodiment 1.
Fig. 2 is a field curvature aberration diagram of the short-focus telephoto optical lens of embodiment 1.
Fig. 3 is a distortion aberration diagram of the short-focus telephoto optical lens of embodiment 1.
Fig. 4 is a longitudinal spherical aberration diagram of the short-focus telescopic optical lens of embodiment 1.
Fig. 5 is a schematic structural diagram of the short-focus and telescopic optical lens of embodiment 2.
Fig. 6 is a curvature of field aberration diagram of the short-focus telephoto optical lens of embodiment 2.
Fig. 7 is a distortion aberration diagram of the short-focus telephoto optical lens of embodiment 2.
Fig. 8 is a longitudinal spherical aberration diagram of the short-focus telescopic optical lens of embodiment 2.
Fig. 9 is a schematic structural view of a short-focus and telescopic optical lens of embodiment 3.
Fig. 10 is a curvature of field aberration diagram of the short-focus telephoto optical lens of embodiment 3.
Fig. 11 is a distortion aberration diagram of the short-focus telephoto optical lens of embodiment 3.
Fig. 12 is a longitudinal spherical aberration diagram of the short-focus telescopic optical lens of embodiment 3.
The reference signs are: the lens comprises a first lens 10, a second lens 11, a fourth lens 13, a fifth lens 14, a sixth lens 15, a protective glass 16, an image side surface 17, a diaphragm 18 and a third lens 12.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the embodiments of the present invention are not limited thereto.
Example 1
As shown in fig. 1 to 4, a short-focus telescopic optical lens includes, in order from an object side to an image side:
a first lens element 10 having a negative optical power, the first lens element 10 having an object-side surface that is convex in a paraxial region thereof and an image-side surface 17 that is concave in a paraxial region thereof;
the second lens 11 has negative focal power, the object side surface of the second lens 11 is convex at the paraxial region, and the image side surface of the second lens 11 is concave at the paraxial region;
an aperture 18;
the third lens 12 with positive focal power, the object side surface of the third lens 12 is convex at the paraxial region, and the image side surface of the third lens 12 is convex at the paraxial region;
the fourth lens 13 with positive focal power, the object side surface of the fourth lens 13 is concave at the paraxial region, and the image side surface of the fourth lens 13 is convex at the paraxial region;
the fifth lens 14 has positive focal power, the object side surface of the fifth lens 14 is concave at the paraxial region, and the image side surface of the fifth lens 14 is convex at the paraxial region;
the sixth lens 15 with negative focal power, the object side surface of the sixth lens 15 is convex at the paraxial region, and the image side surface of the sixth lens 15 is concave at the paraxial region;
a cover glass 16 is provided between the sixth lens 15 and the image side surface 17.
The short-focus telescopic optical lens meets the following conditions:
7.00< TTL < 7.01; wherein TTL is the total lens length; in this embodiment, TTL is 7.000.
2.40mm < EFL <2.55 mm; the EFL is the effective focal length of the short-focus optical lens; in the present embodiment, the EFL is 2.503 mm.
2.22< Fno < 2.28; wherein Fno is an aperture 18 value of the short-focus optical lens; in the present embodiment, Fno is 2.242.
HFOV is 42 degrees; wherein the HFOV is a half field angle of the short-focus optical lens.
The short-focus telescopic optical lens meets the following conditions: 2.16< ImgH < 2.18; wherein ImgH is image height. In the present embodiment, ImgH is 2.170.
The short-focus telescopic optical lens meets the following conditions: -5.96mm < f12< -5.98 mm; wherein f12 is the combined focal length of the first lens 10 to the second lens 11; in the present embodiment, f12 is-5.966 mm.
The short-focus telescopic optical lens meets the following conditions: 2.19< f3456< 2.22; wherein f3456 is the combined focal length of the third lens 12, the fourth lens 13, the fifth lens 14 and the sixth lens 15; in the present embodiment, f3456 is 2.218.
The short-focus telescopic optical lens meets the following conditions: -2.73< f12/f3456< -2.69; in this embodiment, f12/f3456 is-2.690.
The short-focus telescopic optical lens meets the following conditions: -2.45< f12/EFL < -2.38, in this embodiment f12/EFL ═ 2.383.
The short-focus telescopic optical lens meets the following conditions: 0.308< ImgH/TTL < 0.310; in the present embodiment, ImgH/TTL is 0.310.
The short-focus telescopic optical lens meets the following conditions: 7.658< R3R 4/R9R 10< 7.887; wherein R3 is the radius of curvature of the object-side surface L2a of the second lens 11, R4 is the radius of curvature of the image-side surface L2b of the second lens 11, R9 is the radius of curvature of the object-side surface L5a of the fifth lens 14, and R10 is the radius of curvature of the image-side surface L5b of the fifth lens 14; in the present embodiment, R3 × R4/R9 × R10 is 7.720.
The curve equation of the aspherical surface of each lens described above is expressed as follows:
Figure BDA0003718941350000041
wherein, X: the distance between a point on the aspheric surface, which is Y away from the optical axis, and a tangent plane of the aspheric surface and the optical axis;
y: the vertical distance between a point on the aspheric surface and the optical axis;
r: a radius of curvature of the lens at the paraxial region;
k: the cone coefficient;
A i : the ith order aspheric coefficients.
Please refer to table 1 below, which shows detailed optical data of the short-focus telescopic optical lens of embodiment 1 of the present invention. The object-side surface of the first lens element 10 is indicated as surface L1a, the image-side surface is indicated as surface L1b, and so on, and the description thereof will not be repeated.
TABLE 1
Figure BDA0003718941350000042
Figure BDA0003718941350000051
Please refer to table 2, which shows the aspheric coefficients of the lens surfaces of example 1.
TABLE 2
Figure BDA0003718941350000052
Figure BDA0003718941350000061
Example 2
As shown in fig. 5 to 8, a short-focus telescopic optical lens includes, in order from an object side to an image side:
the first lens 10 with negative focal power, the object side surface of the first lens 10 is a convex surface near the optical axis, and the image side surface of the first lens 10 is a concave surface near the optical axis;
the second lens 11 has negative focal power, the object side surface of the second lens 11 is convex at the paraxial region, and the image side surface of the second lens 11 is concave at the paraxial region;
an aperture 18;
the third lens 12 with positive focal power, the object side surface of the third lens 12 is convex at the paraxial region, and the image side surface of the third lens 12 is convex at the paraxial region;
the fourth lens 13 with positive focal power, the object side surface of the fourth lens 13 is concave at the paraxial region, and the image side surface of the fourth lens 13 is convex at the paraxial region;
the fifth lens 14 has positive focal power, the object side surface of the fifth lens 14 is concave at the paraxial region, and the image side surface of the fifth lens 14 is convex at the paraxial region;
the sixth lens 15 with negative focal power, the object side surface of the sixth lens 15 is convex at the paraxial region, and the image side surface of the sixth lens 15 is concave at the paraxial region;
a cover glass 16 is provided between the sixth lens 15 and the image side surface 17.
The short-focus telescopic optical lens meets the following conditions:
7.00< TTL < 7.01; wherein TTL is the total lens length; in the present embodiment, TTL is 7.010.
2.40mm < EFL <2.55 mm; the EFL is the effective focal length of the short-focus optical lens; in the present embodiment, the EFL is 2.501 mm.
2.22< Fno < 2.28; wherein Fno is an aperture 18 value of the short-focus optical lens; in the present embodiment, Fno is 2.226.
HFOV is 42 degrees; wherein the HFOV is a half field angle of the short-focus optical lens.
The short-focus telescopic optical lens meets the following conditions: 2.16< ImgH < 2.18; wherein ImgH is image height. In the present embodiment, ImgH is 2.162.
The short-focus telescopic optical lens meets the following conditions: -5.96mm < f12< -5.98 mm; wherein f12 is the combined focal length of the first lens 10 to the second lens 11; in the present embodiment, f12 is-5.973 mm.
The short-focus telescopic optical lens meets the following conditions: 2.19< f3456< 2.22; wherein f3456 is the combined focal length of the third lens 12, the fourth lens 13, the fifth lens 14 and the sixth lens 15; in the present embodiment, f3456 is 2.218.
The short-focus telescopic optical lens meets the following conditions: -2.73< f12/f3456< -2.69; in this embodiment, f12/f3456 is-2.694.
The short-focus telescopic optical lens meets the following conditions: -2.45< f12/EFL < -2.38, in this embodiment f12/EFL ═ 2.389.
The short-focus telescopic optical lens meets the following conditions: 0.308< ImgH/TTL < 0.310; in this embodiment, ImgH/TTL is 0.308.
The short-focus telescopic optical lens meets the following conditions: 7.658< R3R 4/R9R 10< 7.887; wherein R3 is the radius of curvature of the object-side surface L2a of the second lens 11, R4 is the radius of curvature of the image-side surface L2b of the second lens 11, R9 is the radius of curvature of the object-side surface L5a of the fifth lens 14, and R10 is the radius of curvature of the image-side surface L5b of the fifth lens 14; in the present embodiment, R3 × R4/R9 × R10 is 7.887.
The curve equation of the aspherical surface of each lens described above is as follows:
Figure BDA0003718941350000071
wherein, X: the distance between a point on the aspheric surface, which is Y away from the optical axis, and a tangent plane of the aspheric surface and the optical axis;
y: the vertical distance between a point on the aspheric surface and the optical axis;
r: a radius of curvature of the lens at the paraxial region;
k: the cone coefficient;
A i : the ith order aspheric coefficients.
Please refer to the following table 3, which shows detailed optical data of the short-focus telescopic optical lens of embodiment 2 of the present invention. The object-side surface of the first lens element 10 is indicated as surface L1a, the image-side surface is indicated as surface L1b, and so on, and the description thereof will not be repeated.
TABLE 3
Figure BDA0003718941350000072
Figure BDA0003718941350000081
Please refer to table 4, which shows the aspheric coefficients of the lens surfaces of example 2 of the present invention.
TABLE 4
Figure BDA0003718941350000082
Example 3
As shown in fig. 9 to 12, a short-focus telescopic optical lens includes, in order from an object side to an image side:
the optical lens comprises a first lens 10 with negative focal power, wherein the object side surface of the first lens 10 is convex at the paraxial region, and the image side surface of the first lens 10 is concave at the paraxial region;
the second lens 11 has negative focal power, the object side surface of the second lens 11 is convex at the paraxial region, and the image side surface of the second lens 11 is concave at the paraxial region;
an aperture 18;
the third lens 12 with positive focal power, the object side surface of the third lens 12 is convex at the paraxial region, and the image side surface of the third lens 12 is convex at the paraxial region;
the fourth lens 13 with positive focal power, the object side surface of the fourth lens 13 is concave at the paraxial region, and the image side surface of the fourth lens 13 is convex at the paraxial region;
the fifth lens 14 has positive focal power, the object side surface of the fifth lens 14 is concave at the paraxial region, and the image side surface of the fifth lens 14 is convex at the paraxial region;
the sixth lens 15 with negative focal power, the object side surface of the sixth lens 15 is convex at the paraxial region, and the image side surface of the sixth lens 15 is concave at the paraxial region;
a cover glass 16 is provided between the sixth lens 15 and the image side surface 17.
The short-focus telescopic optical lens meets the following conditions:
7.00< TTL < 7.01; wherein TTL is the total lens length; in the present embodiment, TTL is 7.009.
2.40mm < EFL <2.55 mm; the EFL is the effective focal length of the short-focus optical lens; in the present embodiment, EFL is 2.443 mm.
2.22< Fno < 2.28; wherein Fno is an aperture 18 value of the short-focus optical lens; in the present embodiment, Fno is 2.277.
HFOV is 42 degrees; wherein, the HFOV is the half field angle of the short-focus optical lens.
The short-focus telescopic optical lens meets the following conditions: 2.16< ImgH < 2.18; wherein ImgH is image height. In the present embodiment, ImgH is 2.175.
The short-focus telescopic optical lens meets the following conditions: -5.96mm < f12< -5.98 mm; wherein f12 is the combined focal length of the first lens 10 to the second lens 11; in the present embodiment, f12 is-5.973 mm.
The short-focus telescopic optical lens meets the following conditions: 2.19< f3456< 2.22; wherein f3456 is the combined focal length of the third lens 12, the fourth lens 13, the fifth lens 14 and the sixth lens 15; in the present embodiment, f3456 is 2.190.
The short-focus telescopic optical lens meets the following conditions: -2.73< f12/f3456< -2.69; in this embodiment, f12/f3456 is-2.728.
The short-focus telescopic optical lens meets the following conditions: -2.45< f12/EFL < -2.38, in this embodiment f12/EFL ═ 2.445.
The short-focus telescopic optical lens meets the following conditions: 0.308< ImgH/TTL < 0.310; in the present embodiment, ImgH/TTL is 0.310.
The short-focus telescopic optical lens meets the following conditions: 7.658< R3R 4/R9R 10< 7.887; wherein R3 is the radius of curvature of the object-side surface L2a of the second lens 11, R4 is the radius of curvature of the image-side surface L2b of the second lens 11, R9 is the radius of curvature of the object-side surface L5a of the fifth lens 14, and R10 is the radius of curvature of the image-side surface L5b of the fifth lens 14; in the present embodiment, R3 × R4/R9 × R10 is 7.658.
The curve equation of the aspherical surface of each lens described above is as follows:
Figure BDA0003718941350000101
wherein, X: the distance between a point on the aspheric surface, which is Y away from the optical axis, and a tangent plane of the aspheric surface and the optical axis;
y: the vertical distance between a point on the aspheric surface and the optical axis;
r: a radius of curvature of the lens at the paraxial region;
k: the cone coefficient;
A i : the ith order aspheric coefficients.
Please refer to table 5 below, which shows detailed optical data of the short-focus telescopic optical lens of embodiment 3 of the present invention. The object-side surface of the first lens element 10 is indicated as surface L1a, the image-side surface is indicated as surface L1b, and so on, and the description thereof will not be repeated.
TABLE 5
Figure BDA0003718941350000102
Figure BDA0003718941350000111
Please refer to table 6, which shows the aspheric coefficients of the lens surfaces of embodiment 3 of the present invention.
TABLE 6
Figure BDA0003718941350000112
The above examples only show 3 embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (8)

1. A short-focus telephoto optical lens comprising, in order from an object side to an image side:
the lens comprises a first lens (10) with negative focal power, wherein the object side surface of the first lens (10) is convex at the paraxial region, and the image side surface of the first lens (10) is concave at the paraxial region;
the lens comprises a second lens (11) with negative focal power, wherein the object side surface of the second lens (11) is convex at the paraxial region, and the image side surface of the second lens (11) is concave at the paraxial region;
an aperture (18);
the lens comprises a third lens (12) with positive focal power, wherein the object side surface of the third lens (12) is convex at the paraxial region, and the image side surface of the third lens (12) is convex at the paraxial region;
a fourth lens (13) with positive focal power, wherein the object side surface of the fourth lens (13) is concave at the paraxial region, and the image side surface of the fourth lens (13) is convex at the paraxial region;
a fifth lens (14) with positive focal power, wherein the object side surface of the fifth lens (14) is concave at the paraxial region, and the image side surface of the fifth lens (14) is convex at the paraxial region;
a sixth lens (15) with negative focal power, wherein the object side surface of the sixth lens (15) is convex at the paraxial region, and the image side surface of the sixth lens (15) is concave at the paraxial region;
the short-focus telescopic optical lens meets the following conditions:
7.00< TTL < 7.01; wherein TTL is the total lens length;
2.40mm < EFL <2.55 mm; the EFL is the effective focal length of the short-focus optical lens;
2.22< Fno < 2.28; wherein Fno is the aperture (18) value of the short-focus optical lens;
HFOV is 42 degrees; wherein the HFOV is a half field angle of the short-focus optical lens.
2. A short-focus telescopic optical lens according to claim 1, characterized in that the short-focus telescopic optical lens satisfies the following condition: 2.16< ImgH < 2.18; wherein ImgH is image height.
3. A short-focus telescopic optical lens according to claim 2, characterized in that the short-focus telescopic optical lens satisfies the following condition:
-5.96mm < f12< -5.98 mm; wherein f12 is the combined focal length of the first lens (10) to the second lens (11).
4. A short-focus telescopic optical lens according to claim 3, characterized in that the short-focus telescopic optical lens satisfies the following condition:
2.19< f3456< 2.22; wherein f3456 is the combined focal length of the third lens (12), the fourth lens (13), the fifth lens (14) and the sixth lens (15).
5. The short-focus telescopic optical lens according to claim 4, wherein the short-focus telescopic optical lens satisfies the following condition: -2.73< f12/f3456< -2.69.
6. The short-focus telescopic optical lens according to claim 5, wherein the short-focus telescopic optical lens satisfies the following condition: -2.45< f12/EFL < -2.38.
7. The short-focus telescopic optical lens according to claim 6, wherein the short-focus telescopic optical lens satisfies the following condition: 0.308< ImgH/TTL < 0.310.
8. The short-focus telescopic optical lens according to claim 7, wherein the short-focus telescopic optical lens satisfies the following condition: 7.658< R3R 4/R9R 10< 7.887; wherein R3 is the curvature radius of the second lens (11) object side surface L2a, R4 is the curvature radius of the second lens (11) image side surface L2b, R9 is the curvature radius of the fifth lens (14) object side surface L5a, and R10 is the curvature radius of the fifth lens (14) image side surface L5 b.
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN117389010A (en) * 2023-12-11 2024-01-12 江西联创电子有限公司 Optical lens

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