Full-color wide-angle miniaturized zoom optical system

Abstract

The invention relates to a full-color wide-angle miniaturized zoom optical system which comprises a compensation group A with negative focal power, a fixed group B with positive or negative focal power and a zoom group C with positive focal power which are sequentially arranged from left to right along a light incidence direction, the compensation group A comprises a meniscus negative lens A1, a biconcave negative lens A2 and a biconvex positive lens A3 which are arranged in sequence; the fixed group B comprises a meniscus lens B1; and the zoom group C comprises a positive lens C1, a biconvex positive lens C2, a gluing group formed by tightly connecting a lens C3 and a lens C4, a meniscus negative lens C5 and a biconvex positive lens C6 which are arranged in sequence. By adopting the glass-plastic structural design, compared with an all-glass system, the system has the advantages of lighter system mass, lower manufacturing cost and higher optical performance stability compared with an all-plastic system. The F1.0 ultra-large aperture design is adopted, so that day and night full color is realized; the field angle of the wide-angle end is greater than 90 degrees; and the optical total length is less than 51mm.

Description

technical field [0001] The invention relates to a full-color wide-angle miniaturized zoom optical system, which belongs to the field of optoelectronic technology. Background technique [0002] Video surveillance is the most important means of prevention in the security system, and its importance is self-evident. With people's demand for security monitoring, all-weather monitoring has emerged as the times require. A camera with an ordinary aperture lens cannot image clearly in a dark night environment. Although it can obtain a clear image under low illumination under the irradiation of an infrared fill light, it can only form a black and white image, losing important color information. [0003] The existing full-color zoom optical system is difficult to take into account the advantages of wide angle, miniaturization, and low cost while having a large aperture. Contents of the invention [0004] In view of the deficiencies in the prior art, the technical problem to be solv...

AI Technical Summary

Problems solved by technology

A camera with an ordinary aperture lens cannot image clearly in a dark environment. Although it can obtain a clear image under low illumination under the illumination of an infrared fill light, it can only form a black and white image and lose important color information.

[0003] The existing full-color zoom optical system is difficult to take into account the advantages of wide angle, miniaturization, and low cost while having a large aperture

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