Miniaturized airborne zoom lens with large zooming ratio

Abstract

The invention relates to a miniaturized airborne zoom lens with large zooming ratio. A front fixing group of which the focal power is positive, a zooming group of which the focal power is negative, a compensating group of which the focal power is negative, a variable diaphragm component, a back fixing group of which the focal power is positive and a switching component of color filters are respectively arranged along the incidence direction of light rays from left to right; the front fixing group is sequentially provided with a gluing group which is formed through sealed connection of a negative crescent lens and a double-convex lens, a positive crescent lens I and a positive crescent lens II; the zooming group is provided with a gluing group which is formed through sealed connection of three lenses which include a double-concave lens, a double-convex lens and a double-concave lens; the compensating group is provided with a gluing group which is formed through sealed connection of a double-concave lens and a positive crescent lens; and the front part of the back fixing group is sequentially provided with a double-convex lens and a positive crescent lens, the middle part is sequentially provided with a gluing group which is formed through sealed connection of a double-convex lens and a double-concave lens, a double-convex lens and a negative crescent lens, and the back part is provided with a double-convex lens. The miniaturized airborne zoom lens with large zooming ratio has the functions of continuous electric zooming, electric focusing, electric dimming, color filters switching, focal distance real-time feedback and the like.

Description

technical field [0001] The invention relates to an optical camera device of video technology, in particular to a miniaturized large zoom ratio airborne zoom lens. Background technique [0002] At present, the airborne detection system requires small size, light weight, large detection distance, high definition, continuous observation under fog, rain, snow, dust and other weather conditions, and can perform panoramic search of large areas and small magnifications for targets. , and can be used for large-magnification magnification observation of small areas. The optical structure of the traditional mechanically compensated zoom lens consists of four components: the front fixed group, the zoom group, the compensation group and the rear fixed group, but there are generally large volumes, small zoom ratios, and low resolution. , Incompatibility with high-precision cameras and other shortcomings. Contents of the invention [0003] In view of the deficiencies in the prior art,...

AI Technical Summary

Problems solved by technology

The optical structure of the traditional mechanically compensated zoom lens consists of four components: the front fixed group, the zoom group, the compensation group and the rear fixed group, but there are generally large volumes, small zoom ratios, and low resolution. , Incompatibility with high-precision cameras and other shortcomings

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