High-resolution camera shooting lens for full-group mobile industry

Abstract

The invention relates to a high-resolution camera shooting lens for a full-group mobile industry. According to the lens, a front group A, an iris C and a rear group B are sequentially arranged along an incident direction of light rays from left to right in an optical system, wherein the front group A is sequentially provided with a negative meniscus lens A-1, a biconvex lens A-2, and a first gluing group formed by tightly connecting a biconvex lens A-3 and a biconcave lens A-4; and the rear group B is sequentially provided with a second gluing group formed by tightly connecting a positive meniscus lens B-1 and a negative meniscus lens B-2, a negative meniscus lens B-3, and a third gluing group formed by tightly connecting a biconvex lens B-4 and a plano-concave lens B-5. The high-resolution camera shooting lens has the characteristics of high resolution, large target surface, low distortion, small close-up distance and the like and can be matched with a high-definition charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) camera, the high-definition video shooting is realized, the clear imaging with the close-up distance of 0.3m can be realized, and the distortion rate is less than 1 percent.

Description

technical field [0001] The invention relates to a high-resolution full-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 disadvantage of video clarity (that is, resolution) decline in the process of network transmission and digital zooming, people’s requirements for image resolution are getting higher and higher, req...

AI Technical Summary

Problems solved by technology

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 disadvantage of video clarity (that is, resolution) decline in the process of network transmission and digital zooming, people’s requirements for image resolution are getting higher and higher, requiring higher resolution lens

like figure 1 The camera lens of structural type has been used in the field of video camera for more than 10 years, and its performance index is low, especially in terms of image clarity, it can only be adapted to standard definition CCD or CMOS cameras with 200,000 to 300,000 pixels, and can only adapt to The need for "seeing" in the monitoring field, such a resolution is far from meeting the requirements of today's high-definition cameras

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