An infrared cooling imaging optical system

Abstract

The invention discloses a real-time polarized infrared cooling imaging optical system with sub-aperture confocal surface, which includes a polarization group, a sub-aperture group, a beam combining group, a first refracting mirror, an imaging front group, a second refracting mirror and After imaging group, the polarization group includes infrared wave plates and infrared polarizers arranged in sequence along the optical path, the sub-aperture group includes four groups of identical optical paths symmetrically distributed in space, each containing three infrared material lenses, and the beam combining group includes Three large-diameter infrared material lenses, the imaging front group includes three small-diameter infrared material lenses, and the imaging rear group includes three infrared material lenses that compress imaging light, and the first refraction reflection is included between the beam combining group and the imaging front group Mirror, the second deflection mirror is included between the imaging front group and the imaging rear group, which is used to fold the optical path and compress the overall size of the system; the present invention adopts four-way sub-apertures, rationally arranges the optical path structure, and the four imaging channels are completely consistent. And fully meet the requirements of the infrared cooling type cold aperture.

Description

technical field [0001] The invention belongs to the field of optical technology, and in particular relates to a real-time polarized infrared cooling imaging optical system with sub-aperture confocal planes. Background technique [0002] Infrared imaging technology recognizes the target and obtains the image information of the target by detecting the temperature difference between the target and the background. Because the infrared system has the advantages of strong camouflage recognition ability, uninterrupted day and night, passive imaging, and less susceptible to interference, it is widely used in military anti-camouflage shielding , space remote sensing, medical diagnosis and optical monitoring and many other aspects. [0003] However, under the influence of man-made or natural complex background noise, such as water targets or infrared military camouflage heat sources, it is still very difficult to accurately identify targets, so the polarization characteristics of ligh...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of poor real-time performance, bulky size and high price of existing infrared polarization imaging systems, the present invention provides a real-time polarized infrared cooling imaging optical system with sub-aperture confocal planes

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