Pick-up lens for high-resolution single group movement industry

Abstract

The invention relates to a pick-up lens for a high-resolution single group movement industry. A front group A with negative focal power, an iris diaphragm C and a rear group B with positive focal power are sequentially arranged in an optical system of the lens along the incident direction from left to right of light, wherein the front group A is sequentially provided with a positive meniscus lens A-1, a positive meniscus lens A-2 and a negative meniscus lens A-3, and the rear group B is sequentially provided with a glued group with tight joint of a biconcave lens B-1 and a biconvex lens B-2, a biconvex lens B-3 and a positive meniscus lens B-4. The pick-up lens disclosed by the invention has the characteristics of high resolution, large target surface, low distortion, small minimum photographic distance and the like, and can be in adaptation with a high-resolution CCD (charge coupled device) or a CMOS (complementary metal oxide semiconductor) video camera, realize high-resolution videography, simultaneously realize clear imaging with minimum photographic distance of 0.3m and enable the distortion to be lower than 1%.

Description

technical field [0001] The invention relates to a high-resolution single-group mobile industrial camera lens. Background technique [0002] The continuous improvement of science and technology and the continuous improvement of the safety awareness of all walks of life have promoted the rapid development of the security market. With the continuous maturity of advanced video compression coding technology and the rapid development of IP-based network transmission, a series of high-definition cameras with three million, five million or even higher pixels have been launched on the market. With the continuous improvement of mega-pixel high-resolution CCD and CMOS image sensors, photoelectric video surveillance networks are becoming more and more common. And cognition”, and because of the shortcomings of video clarity, that is, resolution reduction in the process of network transmission and digital zooming, people’s requirements for image resolution are getting higher and higher, ...

AI Technical Summary

Problems solved by technology

With the continuous improvement of mega-pixel high-resolution CCD and CMOS image sensors, the photoelectric video surveillance network is becoming more and more common. and cognition”, and because of the shortcomings of video clarity, that is, resolution reduction in the process of network transmission and digital zooming, people’s requirements for image resolution are getting higher and higher, and higher resolution lenses are required

Early fixed-focus lenses had simple structures and low performance indicators. In terms of image definition, they could only be adapted to standard-definition CCD or CMOS cameras with 200,000 to 300,000 pixels. This resolution is far from meeting the requirements of current high-definition cameras.

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