Low-distortion small-scale space debris wide-area detection optical system

Abstract

The invention provides a low-distortion small-scale space debris wide-area detection optical system, and solves the problems that the entrance pupil diameter of a large view field in an existing optical system is small, and the detection capability of the system is limited; a field angle with a large entrance pupil diameter is small, and the timeliness of the system is low; meanwhile, the spectral range is narrow, and the requirement for small-scale space debris wide-area detection cannot be met. The optical system comprises a first positive lens, a first negative lens, a second positive lens, a third positive lens, a fourth positive lens, a second negative lens, a fifth positive lens, a sixth positive lens and a third negative lens which are sequentially arranged on the same optical axis in the light propagation direction, and each of the first negative lens and the second negative lens is provided with a high-order aspheric surface. The performance index is excellent, the full-view-field distortion is smaller than 0.05%, and the use requirement of space debris wide-area detection can be met in a large view field range.

Description

technical field [0001] The invention belongs to a space optical system, in particular to an optical system for wide-area detection of small-scale space debris with low distortion. Background technique [0002] Space debris refers to all invalid man-made objects in orbit or re-entering the dense layer of the earth's atmosphere, including its fragments and components. With the increasing frequency of human spaceflight activities, the number of space debris is increasing rapidly, and the probability of collision with human spacecraft in orbit is getting higher and higher, which seriously threatens the safety of spacecraft in orbit. If the space debris collides with the spacecraft, it will cause damage to the surface of the spacecraft or even directly damage the functional components of the spacecraft, resulting in failure or failure of the spacecraft system. Through the detection and cataloging of small-scale space debris, space debris monitoring and early warning can be reali...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the diameter of the entrance pupil with a large field of view is small, the detection capability of the system is limited; the field of view with a large diameter of the entrance pupil is small, and the timeliness of the system is low; at the same time, the spectral range is narrow, which cannot meet the needs of wide-area detection of small-scale space debris The present invention provides a low-distortion and small-scale space debris wide-area detection optical system, which has excellent performance indicators, and the distortion of the whole field of view is less than 0.05%, which can meet the use requirements of space debris wide-area detection in a large field of view

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