High-low-temperature, infrared-confocal, super-small-distortion and super-wide-angle optical system

Abstract

The present invention relates to a high-low-temperature, infrared-confocal, super-small-distortion and super-wide-angle optical system. The optical system is characterized in that the system comprises a first lens (1), a second lens (2), a third lens (3), a diaphragm (4), a fourth lens (5), a fifth lens (6), a sixth lens (7), a seventh lens (8), an optical filter (9) and a light sensitive chip (10) which are arranged in turn; the first lens (1), the second lens (2), the third lens (3), the fifth lens (6), the sixth lens (7) and the seventh lens (8) are plastic aspherical lenses; and the fourth lens (5) is a glass aspherical lens. The optical system provided by the present invention is low in cost, distortions are corrected, wonderful image sharpness and color restoration in the visible spectrum are achieved, and consistency of the image quality in different environments is realized.

Description

【Technical field】 [0001] The invention relates to an optical imaging system, in particular to a high and low temperature, infrared confocal, high pixel, low cost, large aperture, small volume, small distortion, super wide-angle optical system applied to monitoring and vehicle-mounted systems. 【Background technique】 [0002] At present, the lenses used in monitoring and vehicle lenses generally have such shortcomings: high and low temperature of the lens, infrared non-confocal, high cost, small aperture, large size; large distortion of ultra-wide-angle lenses, etc., and now there are only a few lenses, at the expense of other aspects. To improve a certain aspect, for example, in order to achieve high and low temperature, infrared confocal and high pixels, a large number of glass spherical lenses or glass aspherical lenses are used, which increases the cost and cannot meet the low-cost needs of consumers; or super The distortion of the wide-angle lens is not corrected at all, ...

AI Technical Summary

Problems solved by technology

[0002] At present, the lenses used in monitoring and vehicle lenses generally have such shortcomings: high and low temperature of the lens, infrared non-confocal, high cost, small aperture, large size; large distortion of ultra-wide-angle lenses, etc. Now there are only a few lenses, at the expense of other aspects. To improve a certain aspect, for example, in order to achieve high and low temperature, infrared confocal and high pixels, a large number of glass spherical lenses or glass aspherical lenses are used, which increases the cost and cannot meet the low-cost needs of consumers; or super The distortion of the wide-angle lens is not corrected at all, and there is a defect of large distortion

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