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Glass-plastic hybrid lens

A lens, plastic lens technology, applied in optics, instruments, optical components, etc., can solve the problems of inability to achieve large aperture, excellent high and low temperature performance, low definition, etc., achieve good manufacturability, good assembly tolerance, and guaranteed resolution Effect

Pending Publication Date: 2020-09-29
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 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0065] figure 1 It is a schematic diagram showing the structure of a glass-plastic hybrid lens according to Embodiment 1 of the present invention.

[0066] In Embodiment 1, the aperture FNO=1.6, and the effective focal length f=6.3mm. The stop S is set on the image side of the third lens 3, wherein the fourth lens 4 is a glass lens, and the rest of the lenses are plastic aspheric lenses.

[0067] 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:

[0068] Face number surface type R value thickness Refractive index Abbe number S1 Aspherical 5.1668 1.212 1.534611 55.9821 S2 Aspherical 2.0095 3.8864 S3 Aspherical -7.1371 1.0688 1.61430 25.57289 S4 Aspherical -3.9581 0.0777 S5 Aspherical 3.1415 1.1257 1.639730 23.5289 S6(STO) Aspherical 5.6233 1.9461 S7...

Embodiment approach 2

[0076] Figure 6 It is a schematic diagram showing the structure of a glass-plastic hybrid lens according to Embodiment 2 of the present invention.

[0077] In Embodiment 2, the aperture FNO=1.4, and the effective focal length f=6.0mm. The diaphragm S is arranged between the third lens 3 and the fourth lens 4, wherein the fourth lens 4 is a glass lens, and the rest of the lenses are plastic aspheric lenses.

[0078] 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:

[0079] Face number surface type R value thickness Refractive index Abbe number S1 Aspherical 3.9668 1.212 1.534611 55.9821 S2 Aspherical 2.2095 2.7864 S3 Aspherical -4.1371 1.5688 1.534611 25.57289 S4 Aspherical -3.9581 0.0777 S5 Aspherical 4.1415 1.1257 1.669730 23.5289 S6 Aspherical 5.6233 1.0461 ...

Embodiment approach 3

[0087] Figure 11 It is a schematic diagram showing the structure of the glass-plastic hybrid lens according to Embodiment 3 of the present invention.

[0088] In Embodiment 3, the aperture FNO=1.6, and the effective focal length f=4mm. The diaphragm S is arranged between the third lens 3 and the fourth lens 4, wherein the fourth lens 4 is a glass lens, and the rest of the lenses are plastic aspheric lenses.

[0089] 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:

[0090]

[0091]

[0092] Table 6

[0093] In this embodiment, the aspheric surface data are shown in Table 7 below, K is the quadric surface constant of the surface, and A, B, C, D, and E are the fourth-order, sixth-order, eighth-order, tenth-order, and twelve-order respectively. Aspheric coefficients of order:

[0094] Face number K A B C D E S1 -2.0...

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Abstract

The invention relates to a glass-plastic hybrid lens, which consists of a glass lens and a plastic lens, and comprises a first lens (1), a second lens (2), a third lens (3), a fourth lens (4), a fifthlens (5) and a sixth lens (6) which are sequentially arranged from an object side to an image side along an optical axis, wherein the first lens (1) and the sixth lens (6) are negative focal power lenses, the fourth lens (4) and the fifth lens (5) are positive focal power lenses, and the second lens (2) and the third lens (3) are lenses with positive focal power or lenses with negative focal power. The glass-plastic hybrid lens provided by the invention has the characteristics of large aperture, day and night confocal property and no virtual focus in a temperature range of -40 DEG C to 85 DEGC.

Description

technical field [0001] The invention relates to the field of optical imaging, in particular to a glass-plastic hybrid lens. Background technique [0002] With the rapid development of technology, the requirements for optical lenses are getting higher and higher. Most of the 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 of the present invention,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B1/00G02B1/04
CPCG02B13/0045G02B13/18G02B1/00G02B1/041
Inventor 尚金倩
Owner 舜宇光学(中山)有限公司
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