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Glass and plastic mixed fixed-focus lens

A fixed-focus lens and lens technology, applied in the field of optical imaging, can solve the problems of inability to achieve large aperture, excellent high and low temperature performance, and low definition, and achieve the effects of good manufacturability, large aperture, and uniform illuminance overall

Pending Publication Date: 2019-10-18
舜宇光学(中山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the fixed-focus lenses currently on the market cannot achieve large apertures, excellent high and low temperature performance, and confocal day and night; or they can achieve large apertures, but there are disadvantages such as relatively expensive prices and low resolution.

Method used

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  • Glass and plastic mixed fixed-focus lens
  • Glass and plastic mixed fixed-focus lens
  • Glass and plastic mixed fixed-focus lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0067] figure 1 It is a schematic diagram showing the structure of the glass-plastic hybrid fixed-focus lens according to Embodiment 1 of the present invention.

[0068] The aperture FNO in Embodiment 1 is 1.5.

[0069] The following table 2 lists the relevant parameters of each lens of the present embodiment, including surface type, radius of curvature, thickness, refractive index of material, Abbe number:

[0070] Face number surface type R value thickness Refractive index Abbe number S1 Aspherical 5.5268 2.0000 1.53 56.1 S2 Aspherical 3.0186 3.6124 S3(STO) sphere Infinity 2.9470 S4 sphere 43.7643 1.0000 1.50 70.4 S5 sphere 6.5099 5.0050 1.59 68.6 S6 sphere -5.7785 0.7000 1.61 60.2 S7 sphere -10.3829 0.1000 S8 Aspherical 7.1168 2.7900 1.52 55.7 S9 Aspherical -9.4623 0.2919 S10 Aspherical -8.6488 2.9600 1.64 24.0 S1 Aspherical 14.4448 2.000...

Embodiment approach 2

[0078] Figure 6 It is a schematic diagram showing the structure of the glass-plastic hybrid fixed-focus lens according to Embodiment 2 of the present invention.

[0079] The aperture FNO in Embodiment 2 is 2.1.

[0080] The following table 4 lists the relevant parameters of each lens of this embodiment, including surface type, radius of curvature, thickness, refractive index of material, Abbe number:

[0081] Face number surface type R value thickness Refractive index Abbe number S1 Aspherical 5.8174 2.1047 1.53 56.1 S2 Aspherical 3.0147 5.0017 S3(STO) sphere Infinity 2.3541 S4 sphere 40 1.2045 1.49 70.4 S5 sphere 5.4727 4.0540 1.59 69.6 S6 sphere -5.5516 0.5999 1.64 60.2 S7 sphere -10.1443 0.0998 S8 Aspherical 7.4154 3.7775 1.54 54.2 S9 Aspherical -8.5581 0.3010 S10 Aspherical -8.5810 2.6241 1.64 24.9 S11 Aspherical 13.7329 1.4697 ...

Embodiment approach 3

[0089] Figure 11 It is a schematic diagram showing the structure of the glass-plastic hybrid fixed-focus lens according to Embodiment 3 of the present invention.

[0090] The aperture FNO in Embodiment 3 is 1.7.

[0091] The following table 6 lists the relevant parameters of each lens of this embodiment, including surface type, radius of curvature, thickness, refractive index of material, Abbe number:

[0092] Face number surface type R value thickness Refractive index Abbe number S1 Aspherical 5.4029 1.7965 1.53 56.1 S2 Aspherical 2.9996 4.1201 S3(STO) sphere Infinity 4.1543 S4 sphere 44.7210 2.1251 1.47 66.7 S5 sphere 6.3964 4.4949 1.59 68.6 S6 sphere -4.7655 0.5 1.60 60.8 S7 sphere -11.1538 0.1023 S8 Aspherical 7.5104 3.1908 1.52 55.7 S9 Aspherical -8.5377 0.2877 S10 Aspherical -8.5479 2.6932 1.65 21.5 S11 Aspherical 12.7599 1.69921 ...

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Abstract

The invention relates to a glass and plastic mixed fixed-focus lens. The glass and plastic mixed fixed-focus lens is composed of a glass lens and a plastic lens, and comprises a first lens (1), a diaphragm (S), a second lens (2), a third lens (3), a fourth lens (4), a fifth lens (5) and a sixth lens (6), which are sequentially arranged from an object side to an image side along the optical axis; the first lens (1), the second lens (2) and the sixth lens (6) are negative focal power lenses; the third lens (3) and the fifth lens (5) are positive focal power lenses; and the fourth lens (4) is a positive or negative focal power lens. The lens in the invention has the characteristics of being large in diaphragm, confocal in day and night, and non-defocusing in a temperature range of -40 to 85 DEG C.

Description

technical field [0001] The invention relates to the field of optical imaging, in particular to a glass-plastic hybrid fixed-focus lens. Background technique [0002] With the rapid development of technology, the requirements for optical lenses are getting higher and higher. Most of the fixed-focus lenses currently on the market cannot achieve large apertures, excellent high and low temperature performance, and confocal day and night; or they can achieve large apertures, but there are disadvantages such as relatively expensive prices and low resolution. Therefore, the present invention aims to propose a solution to the above shortcomings, providing a 4K lens with large aperture, confocal day and night, and no virtual focus within the temperature range of -40°C to 85°C. Contents of the invention [0003] The object of the present invention is to solve the above problems, and to provide a glass-plastic hybrid fixed-focus lens. [0004] In order to achieve the above object, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/14G02B1/04
CPCG02B13/00G02B13/18G02B13/14G02B1/041
Inventor 贺保丁尚金倩邹文镔梁伟朝
Owner 舜宇光学(中山)有限公司
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