Large Relative Aperture, Large Field of View and Broad Spectrum Telescope Optical System

Abstract

The invention relates to a telescope optical system for space target detection, in particular to a telescope optical system with large relative aperture, large field of view and wide spectrum, which includes photosensitive devices arranged in sequence along the direction of incident light on the same optical axis, a fourth Correction lens, the third correction lens, the second correction lens, the first correction lens, the main reflector; the photosensitive device and four correction lenses form a central block to the main reflector, and the target surface of the sensitive device is in the fourth correction On the focal plane of the lens, the incident light is firstly reflected by the main reflector, and then passes through the first correcting lens, the second correcting lens, the third correcting lens, and the fourth correcting lens in sequence, and is imaged on the photosensitive element. This system overcomes the technical problem that the current target detection system with a clear aperture greater than Φ500mm is difficult to achieve the performance requirements of large relative aperture and large field of view.

Description

Large Relative Aperture, Large Field of View and Broad Spectrum Telescope Optical System technical field The invention relates to an optical system for a space target detection telescope, in particular to a space target detection telescope optical system with a relative aperture greater than 0.7, a field of view greater than 3°, and a spectral range of 500nm to 800nm ​​with a large relative aperture, large field of view and wide spectrum. Background technique The magnitude target requirements for space target detection determine the characteristics of the telescope system's imaging surface with small diffuse spots, small system energy concentration diameter, and good modulation transfer function. Such performance requirements determine the relative aperture and field of view of the optical system: the larger the relative aperture, the more energy that enters the space target detection system, and the higher the magnitude that can be detected; the larger the field of view, t...

AI Technical Summary

Problems solved by technology

But it has a hyperboloid convex sub-reflector, and in the case of a large relative aperture, the hyperbolic convex sub-reflector has a large aperture, which is quite difficult to process and detect

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