High-accuracy plastic high-definition lens

Abstract

The invention relates to a high-accuracy plastic high-definition lens, wherein a front group A with a negative focal power, a variable diaphragm C and a rear group B with a positive focal power are sequentially arranged in the optical system of the lens along the left-to-right incident direction of a light ray; a variable diaphragm C is arranged between the front group A and the rear group B; the front group A composed of a negative meniscus lens A-1, and a first glued group formed by airtightly connecting a biconcave lens A-2 and a biconvex lens A-3 which are sequentially arranged; the rear group B is composed of a biconvex lens B-1, a negative meniscus lens B-2, a second glued group formed by airtightly connecting a biconvex lens B-3 and a biconcave lens B-4, a biconvex lens B-5 and a planar-convex lens B-6. The high-accuracy plastic high-definition lens is capable of converting a trigger connector lens to a CS connector lens without influence on an imaging effect, and convenient to install and detach; and by using reinforcing plastic, the high-accuracy plastic high-definition lens is high in strength and elastic coefficient, high in impact strength, wide in use temperature range, excellent in electrical characteristics, and capable of improving the yield and back focal consistency thereof.

Description

technical field [0001] The invention relates to a high-precision plastic high-definition lens, which belongs to the field of optical imaging devices of video technology. Background technique [0002] With the rapid development of science and technology, the gradual improvement of people's safety awareness, the rapid development of security engineering. People's requirements for lens quality have also increased accordingly. Reinforced plastic has high strength and elastic coefficient, high impact strength, wide temperature range, excellent electrical characteristics, and is easy to be molded. It is a good material choice. [0003] The CS interface of the existing high-precision mold lens cannot be directly converted from the trigger interface without affecting the imaging effect, resulting in the accumulation or shortage of lenses. The structure of the main metal CS interface lens is complicated and different from that of the metal trigger interface lens. There are many infl...

AI Technical Summary

Problems solved by technology

[0003] The CS interface of the existing high-precision mold lens cannot be directly converted from the trigger interface without affecting the imaging effect, resulting in the accumulation or shortage of lenses. The structure of the main metal CS interface lens is complicated and different from that of the metal trigger interface lens. There are many influencing factors, and the imaging effect is poor. With the emergence of high-precision mold lenses, there are still problems with metal lenses.

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