A Multi-channel Target Simulation System Based on Beam Combining Prism and Beam Expanding Field Mirror

Abstract

The invention discloses a multi-channel target simulation system based on a beam combining prism and a beam expanding field lens, and belongs to the technical field of optical simulation and test. The existing beam combining method can combine beams of different wavelengths, but cannot combine beams of the same wavelength. The multi-channel target simulation system is composed of an optical coupling system (1), a target sub-channel (2) and a beam combining prism (3), wherein the beam combining prism is of a hexagonal pyramid structure, has six reflecting surfaces, and can combine target beams in six target sub-channels; and the optical coupling system comprises an optical microstructure beam expanding field lens, which etches a certain number of array micro lenses on the surface of an element in a photolithography mode to realize a beam expansion function. By adopting the multi-channel target simulation system, a plurality of moving targets and interference point sources can be simulated in the same view field, and the tracking precision and the anti-interference tracking capability of a tracking and pointing optical imaging system can be tested.

Description

technical field [0001] The invention belongs to the technical field of optical simulation and testing, and mainly relates to a multi-channel target simulation system based on a beam combining prism and a beam expanding field mirror. Background technique [0002] With the development of hardware-in-the-loop simulation technology, the target simulator is required to provide more realistic scenes and target images. However, the actual scene contains not only the target, but also the interference target similar to the target, which requires the target simulator to simulate the target and the interference point source at the same time, combine multiple targets together, and output the caliber in the same field of view . [0003] Existing beam combining methods such as figure 1 As shown, two beams of light with different wavelengths are combined by a beam-combining prism glued together by two right-angle prisms. One beam of light is completely transmitted through the interface o...

AI Technical Summary

Problems solved by technology

However, there are problems such as serious energy loss and excessive stray light in beam combining by diffuse reflection. At the same time, it will also bring problems such as reduced illumination of the imaging target and the background, and poor contrast. Therefore, it is difficult to provide realistic and clear scenes and composite targets. image

From this point of view, the existing technology has not yet solved the multi-target compound imaging problem well.

Images