Ten-million-pixel large-target-surface minitype pickup lens for day and night use

Abstract

The invention relates to a ten-million-pixel large-target-surface minitype pickup lens for day and night use. The optical system of the lens is provided with a front group A, a diaphragm C and a rear group B along the ray incidence direction from left to right, wherein the front group A is successively provided with a negative crescent lens A-1, a biconcave lens A-2, a planoconvex lens A-3 and a positive crescent lens A-4; the rear group B is successively provided with a gluing group tightly connected with a biconvex tens B-1 and a biconcave lens B-2, a biconvex lens B-3 and a biconvex lens B-4. The lens uses a remote distance reflecting structure with separated positive and negative focal power, the focal length fA of the front group A is -10.82mm and the focal length fB of the rear group B is 5.91mm; and after the two components are combined, the rear angle of the lens moves forward and the rear intercept of the lens l is greater than or equal to 1.6f. The lens has the advantages of low distortion, high resolution, water, dust and scraping prevention, day and night use and large target surface.

Description

technical field [0001] The invention relates to a day and night dual-purpose miniature camera lens with a large target surface of 10 million pixels. Background technique [0002] The emergence and application of small TV surveillance cameras have a history of 20 to 30 years, and there are a variety of miniature camera lenses of various specifications and models to match them. Their performance indicators vary, and most of them are low-end products with low performance indicators. They are only suitable for ordinary cameras with a small image size of 200,000 to 300,000 pixels, and their spectral range is narrow. Use; the amount of image distortion is large, the difference between the image distortion and the real scene becomes larger, and the authenticity is poor. Contents of the invention [0003] In order to adapt to the high-definition requirements of the miniature camera and the rapid development of the vehicle-mounted lens, improve the image quality of the miniature v...

AI Technical Summary

Problems solved by technology

Their performance indicators vary, and most of them are low-end products with low performance indicators. They are only suitable for ordinary cameras with a small image size of 200,000 to 300,000 pixels, and their spectral range is narrow. Use; the image distortion is large, the difference between the image distortion and the real scene becomes larger, and the authenticity is poor

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