Reflective real-time infrared polarization dual-separation imaging optical system

Abstract

The invention discloses a reflective real-time infrared polarization dual-separation imaging optical system. The reflective real-time infrared polarization dual-separation imaging optical system comprises a Cassegrain reflecting assembly, a Wollaston prism, an imaging infrared lens set and a detector assembly; the Cassegrain reflecting assembly is used for compressing parallel light and then outputting the parallel light, and the parallel light is emitted into the Wollaston prism; the Wollaston prism is used for decomposing the parallel light into two beams of polarized light; the imaging infrared lens set is used for converging the two beams of polarized light, and separating and imaging the two beams of polarized light to the detector assembly; the detector assembly comprises a detectorimage plane and a detector cold shield, the detector image plane is used for detecting two polarizing images formed by the two beams of polarized light, and the detector cold shield is used for reducing radiation. According to the reflective real-time infrared polarization dual-separation imaging optical system, light rays are collected through a Cassegrain reflecting system, and more infrared energy can be obtained; and the two polarizing images of the same scene can be obtained in real time through the Wollaston prism, the two polarizing images are subjected to image information processing,and the target detecting efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of infrared polarization imaging, in particular to a reflective real-time infrared polarization double-separation imaging optical system. Background technique [0002] The imaging technology to detect the polarization state of light waves in the scene is polarization imaging. Polarization imaging has a wide range of application prospects, such as detecting hidden or camouflaged targets, realizing the detection and identification of targets with small temperature differences, and detecting targets under smoky environmental conditions, etc. With the development of photoelectric technology, various infrared camouflage measures have been applied, which has changed the infrared radiation characteristics of the target and the background, resulting in system interference, seriously affecting the detection capability of the infrared imaging detection system, and limiting the function of the traditional infrared imagi...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a reflective real-time infrared polarization dual-separation imaging optical system, which is used to solve the problem that the amplitude division method of the traditional polarization imaging system in the prior art is easy to introduce errors due to environmental factors; the aperture division method has high complexity and the system is sensitive to noise. , the detection ability is weak; the polarization focal plane imaging method is expensive, the optical path is easy to crosstalk, and the processing of large-aperture infrared transmission materials is difficult

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