Radiation-resistant wide-angle lens

Abstract

The invention relates to a radiation-resistant wide-angle lens. An optical system of the lens comprises a front lens group A, a diaphragm B and a rear lens group C which are sequentially arranged along an optical path direction, and the front lens group A is sequentially provided with a positive meniscus lens A-1, a negative meniscus lens A-2, a negative meniscus lens A-3, a negative meniscus lens A-4, a positive meniscus lens A-5 and a positive meniscus lens A-6 along an incident optical path; and the rear lens group C is sequentially provided with a biconvex lens C-1, a negative meniscus lens C-2, a positive meniscus lens C-3 and a biconvex lens C-4 along an incident light path. The radiation-resistant wide-angle lens is simple in structure, adopts a lightweight design, and reduces the size and weight of a system; a large field angle is achieved, and clear imaging is achieved in a large depth-of-field range; and the anti-radiation capability is strong, the service life of the whole system is prolonged, and the system can stably and reliably operate in radiation environments such as outer space for a long time.

Description

technical field [0001] The invention relates to a radiation-resistant wide-angle lens, which belongs to the technical field of photoelectric video. Background technique [0002] In an environment with radiation particles, such as outer space, electrons, protons and a small amount of high-energy cosmic ray particles in the environment will reduce the transmittance of ordinary optical glass materials in the working band, thereby causing the transmittance in the working band of the entire optical system to decrease. As a result, the detector cannot receive the optical signal of the monitoring target, which affects the monitoring ability. Therefore, the ordinary optical lens cannot be used for long-term work in the radiation environment. In these special environments, in order to reduce the cost of equipment protection, it is hoped that the surveillance equipment is small in size, has a larger field of view, a wider monitoring range, a large depth of field, and can image objects...

AI Technical Summary

Problems solved by technology

[0002]In an environment with radiation particles, such as outer space, electrons, protons and a small amount of high-energy cosmic ray particles in the environment will reduce the transmission of ordinary optical glass materials in the working band In turn, the transmittance in the working band of the entire optical system will decrease, causing the detector to fail to receive the optical signal of the monitoring target, which will affect the monitoring capability. Therefore, ordinary optical lenses cannot be used for long-term work in radiation environments.

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