High-definition continuous zoom camera lens with fast field of view switching in low temperature environment

Abstract

The invention relates to a high definition continuous zooming pick-up lens capable of rapidly switching field of view at low temperature. The pick-up lens is provided with along the light incoming direction: a front fixed lens group having a positive focal power, a zoom lens group having a negative focal power, a compensation lens group having a positive focal power, and a rear fixed lens group having a iris diaphragm and a negative focal power; the front fixed lens group is provided with a double-convex lens, a positive meniscus lens and a first gluing group which is composed by sealing a negative meniscus lens and a second positive meniscus lens; the zoom lens group is provided with a second gluing group which is composed by sealing a second negative meniscus lens and a second double-convex lens and also a double-concave lens; the compensation lens group is provided with a third double-convex lens, a third gluing group which is composed by sealing a third negative meniscus lens and a fourth meniscus lens, and also a third positive meniscus lens; the rear fixed lens group is provided with a double-concave lens, a fourth positive meniscus lens, a planoconvex lens, and a fourth gluing group which is composed by sealing a third double-concave lens and a fifth double-convex lens. The pick-up lens enables rapid switching at low temperature.

Description

technical field [0001] The invention relates to a high-definition continuous zoom camera lens for fast switching of field of view in a low-temperature environment, and belongs to the field of optoelectronic technology. Background technique [0002] When the camera lens is required to quickly switch the field of view and quickly lock the target, high requirements are placed on the optical design, structural design, and processing technology of the camera system, especially at low temperature, due to the existence of expansion rates between different materials Due to the difference, the fit gap between different parts will become very small or even directly fastened together, the friction force between moving parts will increase significantly, and the moving load will increase significantly. The difficulty of fast movement of moving parts is greatly increased, and ordinary designs cannot meet the requirements of this application. Generally speaking, the designer will want to ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-definition continuous zoom camera lens with fast switching of field of view in a low-temperature environment, which not only has a simple structure, but also solves the problems of high-definition zoom lenses that cannot be switched quickly in a low-temperature environment, low image quality, and low zoom ratio. Problems such as large volume and weight

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