Glass plastic hybrid fixed-focus lens

A fixed-focus lens and lens technology, which is applied in the field of optical imaging, can solve the problems of few high-quality lenses with super large apertures, high cost, and low volume, so as to improve market competitiveness, reduce lens costs, and improve the quality of lenses. The effect of imaging effects

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

At present, most of the high image quality and large aperture lenses on the market are F1.4, and few lenses reach the large aperture of F1.2
And the size is usually on the left side, the price is expensive, and there are few high-quality lenses with a large aperture of F1.0

Method used

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  • Glass plastic hybrid fixed-focus lens
  • Glass plastic hybrid fixed-focus lens
  • Glass plastic hybrid fixed-focus lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0068] based on figure 1 The shown lens configuration is used to illustrate this embodiment.

[0069] The parameters of the camera lens in Embodiment 1 are as follows:

[0070] Effective focal length f=3.847mm, aperture FNO=1.954.

[0071] The following table 2 lists the focal length of each lens of the lens in this embodiment:

[0072] f1 f2 f3 f4 f5 f6 f1 / f f5 / f6 d / f -6.502 -8.964 16.727 11.708 -8.030 11.311 -2.241 -0.710 1.685

[0073] Table 2

[0074] Table 3 lists the relevant parameters of the lens lens of this embodiment, including surface type, radius of curvature, thickness, refractive index of material, and Abbe number:

[0075] Face number surface type R value thickness Refractive index Abbe number S1 Aspherical 5.206 1.505 1.5 56 S2 Aspherical 1.881 3.990 S3 Aspherical -3.395 2.208 1.5 56 S4 Aspherical -13.995 0.3 S5 STO Infinity -0.198 S6 Asph...

Embodiment approach 2

[0083] Image 6 It schematically shows the structural diagram of the glass-plastic hybrid fixed-focus lens according to the second embodiment of the present invention. The description according to this embodiment is as follows:

[0084] The parameters of the camera lens in the second embodiment are as follows:

[0085] Effective focal length f=3.847mm, aperture FNO=1.954.

[0086] The following table 5 lists the focal length of each lens of the lens in this embodiment:

[0087] f1 f2 f3 f4 f5 f6 f1 / f f5 / f6 d / f -7.606 -8.904 16.508 21.45 -7.393 11.489 -1.97 -0.643 1.801

[0088] table 5

[0089] Table 6 lists the relevant parameters of the lens lens of this embodiment, including surface type, radius of curvature, thickness, refractive index of material, and Abbe number:

[0090] Face number surface type R value thickness Refractive index Abbe number S1 Aspherical 7.844 1.5 1.5 56 S2 Aspherical 2.507 ...

Embodiment approach 3

[0098] Figure 11 It schematically shows the structural diagram of the glass-plastic hybrid fixed-focus lens according to the third embodiment of the present invention. The description according to this embodiment is as follows:

[0099] The parameters of the camera lens in the third embodiment are as follows:

[0100] Effective focal length f=2.998mm., aperture FNO=1.61.

[0101] What table 8 lists is the focal length of each lens of the present embodiment lens:

[0102] f1 f2 f3 f4 f5 f6 f1 / f f5 / f6 d / f -7.08 -8.758 18.661 11.523 -8.058 10.760 -2.362 -0.749 1.759

[0103] Table 8

[0104] The following table 9 lists the relevant parameters of the lens lens of this embodiment, including surface type, radius of curvature, thickness, refractive index of material, and Abbe number:

[0105] Face number surface type R value thickness Refractive index Abbe number S1 Aspherical 5.015 1.5 1.5 56 S2 Aspherical...

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Abstract

The invention relates to a glass plastic hybrid fixed-focus lens. The glass plastic hybrid fixed-focus lens is composed of a glass lens and a plastic lens, and includes: a first lens, a second lens, adiaphragm, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from the object side to the image side along the optical axis; the first lens, the second lens and the fifth lens are negative power lenses; the third lens, the fourth lens and the sixth lens are positive power lenses; in the direction from the object side to the image side, the first lens is a convex-concave lens; the second lens is a concave-convex lens; the third lens is a convex-concave lens; the fourth lens is a convex-convex lens; the fifth lens is a concave-convex lens; the sixth lensis a convex-convex lens; and the fourth lens and the fifth lens constitute a glued lens group with positive power. According to the scheme of the invention, the lens aberration is well corrected, a better imaging effect is achieved, and meanwhile, glass-plastic hybrid complementarity is utilized, the defect that focal shift is easy to occur in high and low temperature environments can be overcome,the large aperture can be realized, and the lens can be used both day and night.

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] At present, in the field of monitoring and control at night and under low-light conditions, infrared supplementary light is usually used to achieve imaging purposes, but the imaging range of infrared supplementary light is small and the color distortion is serious. In order to achieve better night imaging effects, the demand for low-light cameras is increasing. At present, most of the high-quality large-aperture lenses on the market are F1.4, and few lenses reach the large aperture of F1.2. And the size is usually on the left, the price is expensive, and there are few high-quality lenses with a super large aperture of F1.0. Based on the above market status, it is necessary to develop a super large aperture, high pixel, small size, low-cost optical lens in order to have a better imaging effect at night. Conte...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/14G02B1/04
CPCG02B13/0015G02B13/006G02B13/0045G02B13/008G02B1/041
Inventor 贺保丁邓建伟梁伟朝邹文镔
Owner 舜宇光学(中山)有限公司
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