CN211014812U - Optical imaging lens - Google Patents

Abstract

The utility model relates to a camera lens technical field. The utility model discloses an optical imaging lens, including ten lens, first lens second lens, sixth lens and ninth lens are the convex-convex lens of utensil positive refractive index, third lens and fifth lens are the concave-concave lens of utensil negative refractive index, the fourth lens are the plano-convex lens of positive refractive index, the seventh lens are the meniscus lens of negative refractive index, the eighth lens are the convex-concave lens of negative refractive index, the tenth lens are the concave-concave lens or the concave lens of negative refractive index, the image side of this second lens and the object side of third lens are glued each other; the image side surface of the fourth lens and the object side surface of the fifth lens are mutually glued; the image side surface of the sixth lens and the object side surface of the seventh lens are mutually glued; the image side surface of the eighth lens and the object side surface of the ninth lens are mutually cemented. The utility model has the advantages of large image surface, high unit pixel occupation ratio, large light transmission, good color difference optimization and good imaging quality.

Description

an optical imaging lens

technical field

The utility model belongs to the technical field of lenses, in particular to an optical imaging lens used for an intelligent traffic system.

Background technique

With the continuous advancement of science and technology, in recent years, optical imaging lenses have also developed rapidly and are widely used in various fields such as smartphones, tablet computers, video conferencing, vehicle monitoring, security monitoring, and intelligent transportation systems. Imaging lenses are also increasingly demanding.

In the intelligent transportation system, the performance of the optical imaging lens is very important, which will affect the reliability of the whole system. However, the ratio of the unit pixel (pixel) of the optical imaging lens currently used in the intelligent transportation system is not high, which is not conducive to the later algorithm development; generally the light transmission is small, and the relative illuminance of the edge of the imaging surface is low; the size of the image surface (ie the image surface) Diagonal length) is about 1/1.8 inch and 1 inch, which is small, and the total pixel value is low; the general chromatic aberration is not optimized enough, and blue-purple fringing is prone to occur, which can no longer meet the increasing requirements of intelligent transportation systems. Improve.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an optical imaging lens to solve the above-mentioned technical problems.

In order to achieve the above purpose, the technical solution adopted by the present invention is as follows: an optical imaging lens, which includes a first lens to a tenth lens along an optical axis from the object side to the image side in sequence; the first lens to the tenth lens each include an object side facing the object side and allowing the imaging light to pass through and an image side facing the image side and allowing the imaging light to pass;

The first lens has a positive refractive index, the object side of the first lens is convex, and the image side of the first lens is convex;

The second lens has a positive refractive index, the object side of the second lens is convex, and the image side of the second lens is convex;

The third lens has a negative refractive index, the object side of the third lens is concave, and the image side of the third lens is concave;

The fourth lens has a positive refractive index, the object side of the fourth lens is a plane, and the image side of the fourth lens is convex;

The fifth lens has a negative refractive index, the object side of the fifth lens is concave, and the image side of the fifth lens is concave;

The sixth lens has a positive refractive index, the object side of the sixth lens is convex, and the image side of the sixth lens is convex;

The seventh lens has a negative refractive index, the object side of the seventh lens is concave, and the image side of the seventh lens is convex;

The eighth lens has a negative refractive index, the object side of the eighth lens is convex, and the image side of the eighth lens is concave;

The ninth lens has a positive refractive index, the object side of the ninth lens is convex, and the image side of the ninth lens is convex;

The tenth lens has a negative refractive index, the object side of the tenth lens is concave, and the image side of the tenth lens is convex or concave;

The image side of the second lens is cemented with the object side of the third lens; the image side of the fourth lens is cemented with the object side of the fifth lens; the image side of the sixth lens is cemented with the object side of the seventh lens ; The image side of the eighth lens and the object side of the ninth lens are mutually cemented; the optical imaging lens has only the above ten lenses with refractive power.

Further, the optical imaging lens further satisfies: vd2-vd3>30, wherein vd2 and vd3 represent the dispersion coefficients of the second lens and the third lens, respectively.

Further, the tenth lens is a field lens structure.

Further, a diaphragm is also included, and the diaphragm is arranged between the seventh lens and the eighth lens.

Further, the first lens to the tenth lens are all made of glass material.

Further, the first lens to the tenth lens are all made of environmentally friendly materials.

Beneficial technical effects of the present utility model:

The utility model adopts ten lenses, and through the corresponding design of each lens, the unit pixel ratio is high, which is beneficial to the later image processing and corresponding algorithm development; The surface size is large (1.1 inches), and the total pixel value is tens of millions of pixels; the visible light spectrum is designed, the color difference is optimized, and it has the advantages of good image color reproduction.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. , for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is the structural representation of the first embodiment of the present utility model;

Fig. 2 is the MTF diagram of visible light 0.435-0.656 μm according to the first embodiment of the present utility model;

3 is a defocus curve diagram of visible light 0.435-0.656 μm according to Embodiment 1 of the present utility model;

Fig. 4 is the relative illuminance curve diagram of visible light 0.546μm according to the first embodiment of the present utility model;

Fig. 5 is the lateral chromatic aberration curve diagram of visible light 0.546μm according to the first embodiment of the present invention;

Fig. 6 is the longitudinal aberration curve diagram of visible light 0.435-0.656μm according to the first embodiment of the present invention;

7 is a schematic structural diagram of Embodiment 2 of the present utility model;

FIG. 8 is the MTF diagram of the visible light 0.435-0.656 μm according to the second embodiment of the present utility model;

FIG. 9 is a defocus curve diagram of visible light 0.435-0.656 μm according to the second embodiment of the present utility model;

FIG. 10 is a relative illuminance curve diagram of visible light 0.546 μm according to the second embodiment of the present invention;

FIG. 11 is a lateral chromatic aberration curve diagram of visible light 0.546 μm according to the second embodiment of the present invention;

FIG. 12 is a longitudinal aberration curve diagram of visible light 0.435-0.656 μm according to the second embodiment of the present invention;

13 is a schematic structural diagram of Embodiment 3 of the present invention;

14 is the MTF diagram of the visible light 0.435-0.656 μm of the third embodiment of the present invention;

15 is a defocus curve diagram of visible light 0.435-0.656 μm according to the third embodiment of the present invention;

16 is a relative illuminance curve diagram of visible light 0.546 μm according to the third embodiment of the present invention;

FIG. 17 is a lateral chromatic aberration curve diagram of visible light 0.546 μm according to Embodiment 3 of the present utility model;

FIG. 18 is a longitudinal aberration curve diagram of visible light 0.435-0.656 μm according to the third embodiment of the present invention;

19 is a schematic structural diagram of Embodiment 4 of the present utility model;

20 is the MTF diagram of the visible light 0.435-0.656 μm of the fourth embodiment of the present invention;

FIG. 21 is a defocus curve diagram of visible light 0.435-0.656 μm according to Embodiment 4 of the present utility model;

FIG. 22 is a relative illuminance curve diagram of visible light 0.546 μm according to the fourth embodiment of the present invention;

FIG. 23 is a lateral chromatic aberration curve diagram of visible light 0.546 μm according to Embodiment 4 of the present utility model;

FIG. 24 is a longitudinal aberration curve diagram of visible light 0.435-0.656 μm according to the fourth embodiment of the present invention;

Detailed ways

To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with the relevant description of the specification to explain the operation principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible embodiments and the advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are often used to represent similar components.

The present utility model will now be further described with reference to the accompanying drawings and specific embodiments.

The "a lens has a positive refractive power (or a negative refractive power)" means that the paraxial refractive power of the lens calculated by the Gaussian optical theory is positive (or negative). The so-called "object side (or image side) of the lens" is defined as the specific range of the imaging light passing through the surface of the lens. The surface concavity and convexity of the lens can be judged according to the judgment method of ordinary knowledge in the field, that is, the convexity and concavity of the lens surface shape can be judged by the sign of the radius of curvature (abbreviated as R value). R-values are commonly used in optical design software such as Zemax or CodeV. R-values are also commonly found in lens data sheets of optical design software. For the side of the object, when the value of R is positive, it is determined that the side of the object is convex; when the value of R is negative, the side of the object is determined to be concave. Conversely, for the image side, when the R value is positive, the image side is determined to be concave; when the R value is negative, the image side is determined to be convex.

The utility model discloses an optical imaging lens, which sequentially comprises a first lens to a tenth lens along an optical axis from an object side to an image side; the first lens to the tenth lens respectively comprise a lens facing the object side and allowing the imaging light to pass through The object side and an image side facing the image side and allowing the imaging light to pass through.

The first lens has a positive refractive index, the object side of the first lens is convex, and the image side of the first lens is convex.

The second lens has a positive refractive index, the object side of the second lens is convex, and the image side of the second lens is convex.

The third lens has a negative refractive index, the object side of the third lens is concave, and the image side of the third lens is concave.

The fourth lens has a positive refractive index, the object side of the fourth lens is flat, and the image side of the fourth lens is convex.

The fifth lens has a negative refractive index, the object side of the fifth lens is concave, and the image side of the fifth lens is concave.

The sixth lens has a positive refractive index, the object side of the sixth lens is convex, and the image side of the sixth lens is convex.

The seventh lens has a negative refractive index, the object side of the seventh lens is concave, and the image side of the seventh lens is convex.

The eighth lens has a negative refractive index, the object side of the eighth lens is convex, and the image side of the eighth lens is convex.

The ninth lens has a positive refractive index, the object side of the ninth lens is convex, and the image side of the ninth lens is convex.

The tenth lens has a negative refractive index, the object side of the tenth lens is concave, and the image side of the tenth lens is convex or concave;

The image side of the second lens is cemented with the object side of the third lens; the image side of the fourth lens is cemented with the object side of the fifth lens; the image side of the sixth lens is cemented with the object side of the seventh lens ; The image side of the eighth lens and the object side of the ninth lens are mutually cemented.

The optical imaging lens has only the above ten lenses with refractive power. The utility model adopts ten lenses, and through the corresponding design of each lens, the unit pixel ratio is high, which is beneficial to the later image processing and corresponding algorithm development; The surface size is large, and the total pixel value is tens of millions of pixels; the visible light wide spectrum design, the color difference optimization is good, and it has the advantages of good image color reproduction.

Preferably, the optical imaging lens further satisfies: vd2-vd3>30, wherein vd2 and vd3 respectively represent the dispersion coefficients of the second lens and the third lens, which can better optimize the chromatic aberration.

Preferably, the tenth lens is a field lens structure, which can better correct the field curvature and improve the edge image quality.

Preferably, it also includes a diaphragm, the diaphragm is arranged between the seventh lens and the eighth lens, and the diaphragm position is generally rearward, which is conducive to the optimization of the off-axis field of view and improves the edge image quality; the diaphragm is close to the image plane, and the overall size Smaller, which is conducive to the miniaturized design of the lens.

Preferably, the first lens to the tenth lens are all made of glass material, so that the temperature drift is small.

Preferably, the first lens to the tenth lens are all made of environmentally friendly materials, which meet environmental protection requirements.

The optical imaging lens of the present invention will be described in detail below with specific embodiments.

implement one

As shown in FIG. 1, an optical imaging lens includes a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, and a fifth lens in sequence along an optical axis I from the object side A1 to the image side A2 5. The sixth lens 6, the seventh lens 7, the diaphragm 110, the eighth lens 8, the ninth lens 9, the tenth lens 100, the protective glass 120 and the imaging surface 130; the first lens 1 to the tenth lens 100 are respectively It includes an object side facing the object side A1 and passing the imaging light, and an image side facing the image side A2 and passing the imaging light.

The first lens 1 has a positive refractive index, the object side 11 of the first lens 1 is convex, and the image side 12 of the first lens 1 is convex.

The second lens 2 has a positive refractive index, the object side 21 of the second lens 2 is convex, and the image side 22 of the second lens 2 is convex.

The third lens 3 has a negative refractive index, the object side 31 of the third lens 3 is concave, and the image side 32 of the third lens 3 is concave.

The fourth lens 4 has a positive refractive index, the object side 41 of the fourth lens 4 is a plane, and the image side 42 of the fourth lens 4 is convex.

The fifth lens 5 has a negative refractive index, the object side 51 of the fifth lens 5 is concave, and the image side 52 of the fifth lens 5 is concave.

The sixth lens 6 has a positive refractive index, the object side 61 of the sixth lens 6 is convex, and the image side 62 of the sixth lens 6 is convex.

The seventh lens 7 has a negative refractive index, the object side 71 of the seventh lens 7 is convex, and the image side 72 of the seventh lens 7 is concave.

The eighth lens 8 has a negative refractive index, the object side 81 of the eighth lens 8 is concave, and the image side 82 of the eighth lens 8 is convex.

The ninth lens 9 has a positive refractive index, the object side 91 of the ninth lens 9 is convex, and the image side 92 of the ninth lens 9 is convex.

The tenth lens 100 has a negative refractive index, the object side 101 of the tenth lens 100 is concave, and the image side 102 of the tenth lens 100 is concave.

In this specific embodiment, the image side 22 of the second lens 2 and the object side 31 of the third lens 3 are glued to each other; the image side 42 of the fourth lens 4 and the object side 51 of the fifth lens 5 are glued to each other; The image side 62 of the lens 6 and the object side 71 of the seventh lens 7 are cemented with each other; the image side 82 of the eighth lens 8 and the object side 91 of the ninth lens 9 are cemented with each other.

In this specific embodiment, the tenth lens 100 is a field lens structure.

In this specific embodiment, the first lens 1 to the tenth lens 100 are all made of glass material, but not limited to this. In other embodiments, the first lens 1 to the tenth lens 100 may also be made of plastic material or the like.

In this specific embodiment, the materials of the first lens 1 to the tenth lens 100 are all environmentally friendly materials.

In other embodiments, the diaphragm 110 may also be disposed between other lenses.

The detailed optical data of this specific embodiment are shown in Table 1-1.

Table 1-1 Detailed optical data of Example 1

surface Diameter/mm Radius of curvature/mm Thickness/mm material refractive index Dispersion coefficient Focal length/mm - subject surface Infinity Infinity 11 first lens 44.000 90.257 6.748 H-BAK8 1.572499 57.5208 112.23 12 39.000 -220.104 0.124 twenty one second lens 40.000 40.609 13.859 FCD10A 1.458597 90.1949 49.34 twenty two 40.000 -64.581 0 31 third lens 40.000 -64.581 2.148 FD60-W 1.805181 25.4564 -45.97 32 30.368 89.966 2.266 41 fourth lens 35.000 Infinity 4.544 H-ZF88 1.945958 17.9439 56.32 42 35.000 -53.970 0 51 Fifth lens 35.000 -53.970 1.824 H-LAF6LA 1.757 47.714 -24.29 52 27.080 28.516 7.484 61 sixth lens 31.000 44.817 7.120 H-LAF62 1.719999 43.6912 32.02 62 31.000 -54.817 0 71 seventh lens 31.000 -54.817 1.847 H-ZF7LAGT 1.805189 25.4773 -55.15 72 27.993 Infinity 1.906 110 diaphragm 27.655 Infinity 2.462 81 Eighth lens 31.000 100.040 1.841 H-ZLAF2A 1.802793 46.7741 -56.76 82 31.000 31.157 0 91 ninth lens 31.000 31.157 9.187 H-LAK52 1.729164 54.6690 27.30 92 31.000 -48.848 19.842 101 tenth lens 17.904 -36.364 2.092 H-F4 1.620047 36.3479 -45.32 102 17.883 -400.002 2.200 120 protective glass 17.798 Infinity 1.800 H-K9L 1.516797 64.2124 - 17.754 Infinity 9.217 130 Imaging plane 17.431 Infinity 0.000

Please refer to FIG. 2 for the MTF curve of visible light in this specific embodiment. It can be seen from the figure that the unit pixel ratio is high. Under the visible light environment, the MTF value at the spatial frequency of 145lp/mm is greater than 0.3, which meets the needs of picture clarity; visible light Please refer to Figure 3 for the defocusing curve of the camera, and it can be seen that the image quality is uniform; for the relative illuminance of visible light, please refer to Figure 4, it can be seen that the relative illuminance is greater than 75% in normal use; Referring to Figures 5 and 6, it can be seen that the axial chromatic aberration is less than ±2μm and the vertical axis chromatic aberration is less than ±0.04mm.

In this specific embodiment, the aperture value FNO=1.8, the size of the image plane is 1.1 inches, the focal length f=71.14mm, and the field of view angle FOV=17.4°.

Embodiment 2

As shown in FIG. 7 , the surface concavo-convex and refractive index of each lens in this embodiment and the first embodiment are approximately the same, only the image side 102 of the tenth lens 100 is a convex surface, and the curvature radius of each lens surface, lens thickness, etc. The optical parameters are also different.

The detailed optical data of this specific example is shown in Table 2-1.

Table 2-1 Detailed optical data of Example 2

surface Diameter/mm Radius of curvature/mm Thickness/mm material refractive index Dispersion coefficient Focal length/mm - subject surface Infinity Infinity 11 first lens 44.000 84.844 6.734 H-BAK8 1.572499 57.5208 107.39 12 38.000 -220.102 0.134 twenty one second lens 40.000 33.236 15.010 FCD10A 1.458597 90.1949 51.19 twenty two 40.000 -89.185 0 31 third lens 40.000 -89.185 2.141 FD60-W 1.805181 25.4564 -41.95 32 29.152 68.153 2.086 41 fourth lens 35.000 Infinity 4.617 H-ZF88 1.945958 17.9439 54.70 42 35.000 -52.416 0 51 Fifth lens 35.000 -52.416 1.454 H-LAF6LA 1.757 47.714 -23.96 52 26.50655 36.275 5.238 61 sixth lens 31.000 40.030 7.706 H-LAF62 1.719999 43.6912 28.81 62 31.000 -40.030 0 71 seventh lens 31.000 -40.030 1.814 H-ZF7LAGT 1.805189 25.4773 -53.64 72 27.063 -500.106 3.418 110 diaphragm 26.267 Infinity 4.703 81 Eighth lens 31.000 100.428 2.090 H-ZLAF2A 1.802793 46.7741 -54.59 82 30.000 36.335 0 91 ninth lens 30.000 36.335 8.525 H-LAK52 1.729164 54.6690 26.57 92 30.000 -47.845 17.744 101 tenth lens 17.717 -25.550 2.084 H-F4 1.620047 36.3479 -43.83 102 17.721 -400.080 2.200 120 protective glass 17.662 Infinity 1.800 H-K9L 1.516797 64.2124 - 17.632 Infinity 8.803 130 Imaging plane 17.431 Infinity 0.000

Please refer to FIG. 8 for the MTF curve of visible light in this specific embodiment. It can be seen from the figure that the unit pixel ratio is high. Under the visible light environment, the MTF value at the spatial frequency of 145lp/mm is greater than 0.3, which meets the requirement of picture clarity; visible light Please refer to Figure 9 for the defocusing curve of the camera, and it can be seen that the image quality is uniform; for the relative illuminance of visible light, refer to Figure 10, it can be seen that the relative illuminance is greater than 75% in normal use; Referring to Figures 11 and 12, it can be seen that the axial chromatic aberration is less than ±2μm, the vertical axis chromatic aberration is less than ±0.04mm, the color reproduction is good, and there is no blue-violet fringing phenomenon.

In this specific embodiment, the aperture value is FNO=1.8, the size of the image plane is 1.1 inches, the focal length is f=71.11 mm, and the field of view angle is FOV=17.4°.

Embodiment 3

As shown in FIG. 13 , the surface concavo-convex and refractive index of each lens in this embodiment and the first embodiment are approximately the same, only the image side 102 of the tenth lens 100 is convex, and the curvature radius of each lens surface, lens thickness, etc. The optical parameters are also different.

The detailed optical data of this specific embodiment are shown in Table 3-1.

Table 3-1 Detailed optical data of Example 3

surface Diameter/mm Radius of curvature/mm Thickness/mm material refractive index Dispersion coefficient Focal length/mm - subject surface Infinity Infinity 11 first lens 44.000 84.561 6.970 H-BAK8 1.572499 57.5208 107.16 12 38.800 -220.052 0.131 twenty one second lens 40.000 33.270 15.063 FCD10A 1.458597 90.1949 51.18 twenty two 40.000 -68.952 0 31 third lens 40.000 -68.952 2.188 FD60-W 1.805181 25.4564 -42.03 32 28.928 88.640 2.093 41 fourth lens 35.000 Infinity 4.712 H-ZF88 1.945958 17.9439 55.04 42 35.000 -52.743 0 51 Fifth lens 35.000 -52.743 1.734 H-LAF6LA 1.757 47.714 -23.89 52 26.18766 28.132 5.189 61 sixth lens 31.000 39.744 8.081 H-LAF62 1.719999 43.6912 28.67 62 31.000 -39.744 0 71 seventh lens 31.000 -39.744 1.822 H-ZF7LAGT 1.805189 25.4773 -53.22 72 26.624 -300.087 5.400 110 diaphragm 25.372 Infinity 2.182 81 Eighth lens 31.000 100.291 2.075 H-ZLAF2A 1.802793 46.7741 -57.04 82 30.000 31.256 0 91 ninth lens 30.000 31.256 8.397 H-LAK52 1.729164 54.6690 27.02 92 30.000 -47.795 17.597 101 tenth lens 17.391 -38.412 2.083 H-F4 1.620047 36.3479 -43.57 102 17.443 -400.059 2.200 120 protective glass 17.437 Infinity 1.800 H-K9L 1.516797 64.2124 - 17.433 Infinity 8.573 130 Imaging plane 17.433 Infinity 0.000

Please refer to FIG. 14 for the MTF curve of visible light in this specific embodiment. It can be seen from the figure that the unit pixel ratio is high. Under the visible light environment, the MTF value at the spatial frequency of 145lp/mm is greater than 0.3, which meets the needs of picture clarity; visible light Please refer to Figure 15 for the defocusing curve of the camera, and it can be seen that the image quality is uniform; for the relative illuminance of visible light, refer to Figure 16, it can be seen that the relative illuminance is greater than 75% in normal use; Referring to Figures 17 and 18, it can be seen that the axial chromatic aberration is less than ±2μm, the vertical axis chromatic aberration is less than ±0.04mm, the color reproduction is good, and there is no blue-violet fringing phenomenon.

In this specific embodiment, the aperture value is FNO=1.8, the size of the image plane is 1.1 inches, the focal length is f=70.80mm, and the field of view angle is FOV=17.4°.

Embodiment 4

As shown in FIG. 19 , the surface unevenness and refractive index of each lens in this embodiment and the first embodiment are the same, and only the optical parameters such as curvature radius and lens thickness of each lens surface are also different.

The detailed optical data of this specific embodiment are shown in Table 4-1.

Table 4-1 Detailed optical data of Example 4

surface Diameter/mm Radius of curvature/mm Thickness/mm material refractive index Dispersion coefficient Focal length/mm - subject surface Infinity Infinity 11 first lens 44.000 92.335 6.758 H-BAK8 1.572499 57.5208 106.64 12 39.000 -220.711 0.148 twenty one second lens 40.000 45.233 15.272 FCD10A 1.458597 90.1949 51.28 twenty two 40.000 -81.374 0 31 third lens 40.000 -81.374 1.987 FD60-W 1.805181 25.4564 -48.50 32 28.657 77.268 2.078 41 fourth lens 35.000 Infinity 4.994 H-ZF88 1.945958 17.9439 56.48 42 35.000 -54.124 0 51 Fifth lens 35.000 -54.124 4.836 H-LAF6LA 1.757 47.714 -22.13 52 24.07489 25.386 7.801 61 sixth lens 31.000 33.616 7.699 H-LAF62 1.719999 43.6912 30.62 62 31.000 -42.616 0 71 seventh lens 31.000 -42.616 2.195 H-ZF7LAGT 1.805189 25.4773 -62.03 72 32.000 -282.009 1.811 110 diaphragm 23.709 Infinity 2.017 81 Eighth lens 31.000 100.214 2.135 H-ZLAF2A 1.802793 46.7741 -43.20 82 31.000 25.616 0 91 ninth lens 31.000 25.616 10.163 H-LAK52 1.729164 54.6690 23.46 92 31.000 -46.410 12.466 101 tenth lens 17.797 -28.273 2.090 H-F4 1.620047 36.3479 -43.61 102 17.609 160.248 2.200 120 protective glass 17.583 Infinity 1.800 H-K9L 1.516797 64.2124 - 17.567 Infinity 10.842 130 Imaging plane 17.458 Infinity 0.000

Please refer to FIG. 20 for the MTF curve of visible light in this specific embodiment. It can be seen from the figure that the unit pixel ratio is high. Under the visible light environment, the MTF value at the spatial frequency of 145lp/mm is greater than 0.3, which meets the requirement of picture clarity; visible light Please refer to Figure 21 for the defocusing curve of the camera, and it can be seen that the image quality is uniform; for the relative illuminance of visible light, please refer to Figure 22, it can be seen that in normal use, the relative illuminance is greater than 75%; Referring to Figures 23 and 24, it can be seen that the axial chromatic aberration is less than ±2μm, the vertical axis chromatic aberration is less than ±0.04mm, the color reproduction is good, and there is no blue-violet fringing phenomenon.

In this specific embodiment, the aperture value is FNO=1.8, the size of the image plane is 1.1 inches, the focal length is f=71.10 mm, and the field of view angle is FOV=17.4°.

The temperature applicable range of the utility model is -30°C to 80°C, and during normal use within this temperature range, the picture can be guaranteed to be clear and not out of focus.

Although the present invention has been specifically shown and described in connection with preferred embodiments, it will be understood by those skilled in the art that changes in form and detail may be made without departing from the spirit and scope of the present invention as defined by the appended claims. Various changes are made to the present utility model, which are all within the protection scope of the present utility model.

Claims (6)

1. An optical imaging lens, characterized in that: from the object side to the image side, it comprises a first lens to a tenth lens in sequence along an optical axis; the first lens to the tenth lens each comprise a lens toward the object side and make the imaging light The passing object side and an image side facing the image side and allowing the imaging light to pass; The first lens has a positive refractive index, the object side of the first lens is convex, and the image side of the first lens is convex; The second lens has a positive refractive index, the object side of the second lens is convex, and the image side of the second lens is convex; The third lens has a negative refractive index, the object side of the third lens is concave, and the image side of the third lens is concave; The fourth lens has a positive refractive index, the object side of the fourth lens is a plane, and the image side of the fourth lens is convex; The fifth lens has a negative refractive index, the object side of the fifth lens is concave, and the image side of the fifth lens is concave; The sixth lens has a positive refractive index, the object side of the sixth lens is convex, and the image side of the sixth lens is convex; The seventh lens has a negative refractive index, the object side of the seventh lens is concave, and the image side of the seventh lens is convex; The eighth lens has a negative refractive index, the object side of the eighth lens is convex, and the image side of the eighth lens is concave; The ninth lens has a positive refractive index, the object side of the ninth lens is convex, and the image side of the ninth lens is convex; The tenth lens has a negative refractive index, the object side of the tenth lens is concave, and the image side of the tenth lens is convex or concave; The image side of the second lens is cemented with the object side of the third lens; the image side of the fourth lens is cemented with the object side of the fifth lens; the image side of the sixth lens is cemented with the object side of the seventh lens ; The image side of the eighth lens and the object side of the ninth lens are mutually cemented; the optical imaging lens has only the above ten lenses with refractive power. 2 . The optical imaging lens according to claim 1 , wherein the optical imaging lens further satisfies: vd2−vd3>30, wherein vd2 and vd3 represent the dispersion coefficients of the second lens and the third lens, respectively. 3 . 3 . The optical imaging lens of claim 1 , wherein the tenth lens is a field lens structure. 4 . 4 . The optical imaging lens of claim 1 , further comprising a diaphragm, the diaphragm being arranged between the seventh lens and the eighth lens. 5 . 5 . The optical imaging lens of claim 1 , wherein the first lens to the tenth lens are all made of glass material. 6 . 6 . The optical imaging lens of claim 1 , wherein the first to tenth lenses are all made of environmentally friendly materials. 7 .

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