Large-aperture totally-reflective optical synthetic aperture imaging system

Abstract

The invention provides a large-aperture totally-reflective optical synthetic aperture imaging system, which solves the problem that the traditional single large-aperture optical system is difficult to process and manufacture and the problem that some simple synthetic aperture imaging systems cannot achieve the desired system indexes during practice. The large-aperture totally-reflective optical synthetic aperture imaging system is provided with two sub-telescopes, wherein each afocal sub-telescope consists of a remote control (RC) system, a first planar reflector and a first concave reflectorwhich are arranged sequentially along with a light incidence direction; the RC system is confocal with the first concave reflector; the first planar reflector is positioned on a focal plane; an optical delay line is a second planar reflector group, which is arranged between the two afocal sub-telescopes spatially; and a beam synthetic mirror consists of four reflectors arranged in an aperture off-axis mode. In the large-aperture totally-reflective optical synthetic aperture imaging system, two small-aperture systems with the same structure are designed, so that modularized production and detection are realized, difficulties in processing and manufacturing of the system are reduced, volume and weight of the whole system are greatly reduced, and development cost is greatly reduce.

Description

technical field [0001] The invention relates to an optical synthetic aperture imaging system, in particular to a large-diameter two-sub-mirror total reflection synthetic aperture imaging system. Background technique [0002] According to the theory of physical optics, when the working wavelength of the system is fixed, to improve the spatial resolution of the optical system, the aperture of the system must be increased. In practical applications, the increase of the aperture of large or super large optical systems is limited by many factors such as materials, technology level, assembly, payload compartment volume and cost, etc., and it is difficult or even impossible to realize under the current technical conditions . And for the space optical system, the increase of the caliber will inevitably bring difficulties in launching, and the complex space environment may also lead to the deformation of the large-aperture optical mirror, which cannot achieve normal working performa...

AI Technical Summary

Problems solved by technology

[0011] The present invention provides a large-aperture total-reflection optical synthetic aperture imaging system, which solves the problems that the traditional single large-aperture optical system is difficult to process and manufacture, and some simple synthetic aperture imaging systems are difficult to achieve the desired system index in practice.

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