Folding strong fog-through high-definition zoom camera lens

Abstract

The invention relates to a folded high-fog-penetrability high-definition zooming image photographing lens. The optical system of the lens is internally provided with a front fixed set A, a zooming set B, a compensation set C, a variable diaphragm D, a back fixed set E and light filter glass F, wherein the front fixed set A, the zooming set B, the compensation set C, the variable diaphragm D, the back fixed set E and the light filter glass F are successively arranged. The front fixed set A comprises a biconvex lens A-1, a positive crescent lens A-2, a negative crescent lens A-3 and a positive crescent lens A-4. The zooming set B comprises a negative crescent lens B-1 and a first gummed set. The compensation set C comprises a second gummed set and a biconvex lens C-3. The back fixed set E comprises a third gummed set, a reflector E-3, a fourth gummed set, a biconvex lens E-6 and a reflector E-7. The folded high-fog-penetrability high-definition zooming image photographing lens has advantages of effectively reducing secondary spectrum aberration of the optical lens, remarkably improving resolution of the lens, effectively reducing system size and improving detecting capability of an image photographing system to long-distance objects in cloudy weathers such as rain, snow and mist.

Description

technical field [0001] The invention relates to a foldable high-definition zoom camera lens with strong fog penetration and belongs to the field of optoelectronic technology. Background technique [0002] Ordinary camera lenses are limited to applications under general lighting conditions. When used in hazy weather conditions such as rain, snow, and mist, the detection range of the system will be severely reduced, especially when the signal itself is very weak, which will cause the target signal to be submerged in the In the background signal, it cannot be used normally. The traditional optical path structure also generally has the characteristics of small zoom factor and low resolution when the shape and volume are limited. [0003] With the continuous reduction of the pixel size of the image sensor and the rapid increase of its characteristic frequency, photoelectric video surveillance has developed from the pure "watching" of the external scene in the past to the current...

AI Technical Summary

Problems solved by technology

[0002] Ordinary camera lenses are limited to applications under general lighting conditions. When used in hazy weather conditions such as rain, snow, and mist, the detection range of the system will be severely reduced, especially when the signal itself is very weak, which will cause the target signal to be submerged in the In the background signal, it cannot be used normally

The traditional optical path structure also generally has the characteristics of small zoom factor and low resolution when the shape and volume are limited.

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