An infrared anechoic chamber for simulation of wide-spectrum directional coupling optical systems in near space and outside the atmosphere in the laboratory

Abstract

The invention discloses an infrared darkroom for a wide-spectrum directional coupling optical system, and belongs to the technical field of infrared target and background simulation. The infrared darkroom comprises a low-temperature cold tank A, a low-temperature cold tank B, a butting window, a receiving system and a wide-spectrum directional coupling optical system, wherein the low-temperature cold tank A and the low-temperature cold tank B are butted through the butting window, the receiving system is positioned in the low-temperature cold tank A, and the wide-spectrum directional couplingoptical system is positioned in the low-temperature cold tank B. The infrared darkroom provided by the invention has the advantages that stray radiation is inhibited by adopting a low temperature, anda dynamic range of acquired information is not lost. The infrared darkroom provided by the invention can improve the contrast of long-distance and weak point source targets and improve the simulationeffect. The infrared darkroom provided by the invention can provide a vivid low-temperature vacuum condition for optical system simulation in a near space and outside the atmosphere, and effectivelyrestrain stray radiation of the optical system and improve the contrast of a target on the premise of ensuring the dynamic range of acquired information.

Description

technical field [0001] The invention belongs to the technical field of infrared target and background simulation, and in particular relates to an infrared darkroom for a wide-spectrum directional coupling optical system. Background technique [0002] The wide-spectrum directional coupling optical system can receive the infrared radiation emitted by the infrared characteristic generating device of the target and accompanying objects in a vacuum, low-cooling and normal temperature environment, and perform directional beam expansion, recombination, registration, and re-collimation of the outgoing beams of each channel. Realize the complex connection between the multi-channel separation exit pupil of the target and accompanying object infrared characteristic generation device and the detection system entrance pupil, provide infinite multi-target composite scenes, and have the function of extracting low-cold targets, providing wide-band large-bandwidth for vacuum low-radiation sim...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing method will reduce the dynamic range of information acquisition when simulating a wide-spectrum directional coupling optical system, and to provide an infrared darkroom for a wide-spectrum directional coupling optical system, which can pass Low-temperature vacuum simulates the real space environment near space and outside the atmosphere

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