Wide-angle low-light high-resolution lens

A high-resolution, high-resolution lens technology, applied in the field of wide-angle low-light high-resolution lenses, can solve the problems of not being able to adapt to passive night vision, lens performance indicators can not meet the requirements of high-definition photography, etc., to achieve small backlash and reduce assembly The difficulty, the effect of large relative aperture

Active Publication Date: 2010-02-10
FUJIAN FORECAM OPTICS CO LTD
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AI Technical Summary

Problems solved by technology

Obviously, the performance index of the lens cannot meet the requirements of high-definition photography, nor can it meet the requirements of passive night vision in low-light environments.

Method used

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  • Wide-angle low-light high-resolution lens
  • Wide-angle low-light high-resolution lens
  • Wide-angle low-light high-resolution lens

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0014] A wide-angle, low-light, and high-resolution lens is characterized in that: in its optical path structure, a front group with a negative focal power and a rear group with a positive focal power are respectively provided along the light incident from left to right, and the front group Two negative crescent lenses A and B separated from each other are provided in sequence, and the rear group is provided with biconvex lens C, negative crescent lens D, biconvex lens E, light bar, negative crescent lens F, negative crescent lens G and The glued group GH of the double-convex lens H, the double-convex lens I, and the glued group JK of the positive crescent lens J and the negative crescent lens K.

[0015] Wherein, along the light incident direction, the air interval between the two negative crescent lenses A and B in the front group is 6.91mm, and the air interval between the biconvex lens C and the negative crescent lens D in the rear group is 0.28mm mm, the air gap between t...

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Abstract

The invention relates to a wide-angle low-light high-resolution lens, characterized in that, a front group with negative optical power and a rear group with positive optical power are respectively arranged in an optical structure of the lens in a direction of light from left to right in an incident manner, wherein, the front group is sequentially provided with two mutually-separated negative crescent lens A and B, and the rear group is sequentially provided with a double convex lens C, a negative crescent lens D, a double convex lens E, a diaphragm, a negative crescent lens F, a bonding groupGH tightly connected with a negative crescent lens G and a double convex lens H, a double convex lens I, and a bonding group JK tightly connected with a positive crescent lens J and a negative crescent lens K.

Description

technical field [0001] The invention relates to a wide-angle low-light high-resolution lens. Background technique [0002] Regardless of the anti-telephoto wide-angle lens used in a traditional camera or an applied TV camera system, such as figure 1 Optical configuration shown. It evolved from the early anti-telephoto lens several times, but the optical indicators it can achieve are: field of view 2ω≈70°, relative aperture D / f′≈1 / 1.7, and resolution can only meet the needs of traditional cameras. And ordinary cameras with a resolution of about 200,000 to 300,000 pixels are required. Obviously, the performance index of the lens cannot meet the requirements of high-definition photography, nor can it adapt to the requirements of passive night vision in low-light environments. Contents of the invention [0003] The purpose of the present invention is to provide a wide-angle low-light high-resolution lens, which can be used with a 16:9 system 2 / 3 "high-definition CCD camera,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/06G02B7/04
Inventor 张益民周宝藏汪建平张清苏
Owner FUJIAN FORECAM OPTICS CO LTD
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