An Optical System Enables Integration of Subwavelength Pixel Polarizers and Detectors

Abstract

The present invention provides an optical system that can realize the integration of a sub-wavelength pixel polarizer and a detector. The light beam emitted by the target object is imaged on the intermediate image plane through the front lens optical unit to form an intermediate image. The intermediate image plane place a subwavelength pixel polarizer, the intermediate image passes through the subwavelength pixel polarizer, and is diffracted at each pixel unit of the subwavelength pixel polarizer to form an image carrying specific polarization information, with different pixel polarization characteristics The image passes through the rear lens optical unit and is imaged on the receiving surface of the detector, and each pixel unit of the detector receives an image with different polarization characteristics, thereby realizing polarization imaging of the entire target object and realizing Pixel polarization imaging optical system with low distortion, high image quality, high stability, and real-time information acquisition.

Description

technical field [0001] The invention relates to the technical field of polarization imaging, in particular to an optical system capable of realizing the integration of a sub-wavelength pixel polarizer and a detector. Background technique [0002] Polarization imaging technology combines optical intensity imaging and polarization technology, which can simultaneously obtain the two-dimensional spatial position information of the target object and measure the polarization state of the target. Compared with intensity imaging, polarization imaging adds three dimensions (degree of polarization, polarization direction, and polarization ellipticity), greatly increasing the amount of information, and can effectively detect and identify hidden targets that cannot be identified by conventional means in complex environments. Target recognition and detection play an increasingly important role. [0003] At present, the existing polarization measurement and imaging system obtains differe...

AI Technical Summary

Problems solved by technology

[0004] In view of this, it is necessary to provide a secondary imaging optical system for the defects of the existing technology, which can solve the problem of light leakage effect caused by placing the subwavelength pixel polarizer directly on the surface of the detector, and realize the subwavelength pixel polarizer and detector. integrated

Images