High-resolution full-set mobile industrial camera lens

Abstract

The present invention relates to a high-resolution full-group mobile industrial camera lens. The optical system of the lens is provided with a front group A, a variable diaphragm C and a rear group B in sequence along the incident direction of light from left to right. The front group A is sequentially provided with a negative crescent lens A-1, a biconvex lens A-2, and the first cemented group closely connected by a biconvex lens A-3 and a biconcave lens A-4, and the rear group B is sequentially provided with a positive crescent lens. The second cemented group of B-1 and negative crescent lens B-2, the negative crescent lens B-3, and the third cemented group of biconvex lens B-4 and plano-concave lens B-5. The invention has the characteristics of high resolution, large target surface, low distortion, and small close-up distance, etc., and can be adapted to high-definition CCD or CMOS cameras to realize high-definition video recording, and at the same time, it can realize a close-up distance of 0.3m. Clear imaging with less than 1% distortion.

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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