Transient multispectral polarization imaging device and imaging method thereof

Abstract

The invention discloses a transient multispectral polarization imaging device and an imaging method thereof. The transient multispectral polarization imaging device comprises an imaging objective lens, a diaphragm, a collimating objective lens, an optical filter array, a micro lens array and an area array detector which are arranged successively. The imaging method comprises the following steps that: an incident light is imaged on the diaphragm through the imaging objective lens and then is incident to the optical filter array in the form of a collimated light beam through the collimating objective lens; the collimated light beam is divided into a plurality of collimated light beams with different wave bands, the plurality of collimated light beams are incident to the micro lens array, wherein the positions of optical filters are in one-to-one correspondence with the positions of micro lenses; the multiple collimated light beams are respectively imaged in different areas of a target surface of the area array detector through the micro lens array, images on the area array detector are collected, and spectral polarization images of multiple wave bands are obtained; and a color spectral polarization image is synthesized through adoption of the acquired spectral polarization images of the plurality of spectral bands. The transient multispectral polarization imaging device can realize synchronous real-time measurement for spectral information and polarization information of a detected target, and has the advantages of compact structure, low complexity, high integration level, high measurement efficiency and the like.

Description

technical field [0001] The invention belongs to the field of optical imaging detection, in particular to a transient multispectral polarization imaging device and an imaging method thereof. Background technique [0002] Spectral polarization imaging technology is a new type of optical detection technology that integrates imaging technology, spectral technology and polarization technology. This technology can obtain the data hypercube of the measured target, including the image information of the measured target and the spectral information of each point. and polarization information for each spectral band. Spectral polarization imaging technology can detect multi-dimensional light information that cannot be obtained by conventional optical instruments. Therefore, it has broad application prospects in the fields of atmospheric detection, biomedicine, target detection and recognition, and astronomical observation. [0003] At present, according to different spectral splitting...

AI Technical Summary

Problems solved by technology

The above method uses two optical devices, LCTF and AOTF, for spectral splitting. LCTF has the disadvantages of high cost and low spectral transmittance; while AOTF is more sensitive to noise and has a low imaging signal-to-noise ratio.

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