Zooming full-polarized light spectrum imaging detection system

Abstract

A zoom full-polarization spectral imaging detection system consists of a zoom optical lens, a spectral filter, two liquid crystal variable retarders (an LCVR1 and an LCVR2), a polarizer, a microspur optical lens, a charge-coupled device, an electronic driver, an image acquisition card and a computer. The imaging system of the system adopts a zoom optical system; the corresponding spectral imagingis achieved through the selection of suitable spectral filers; as the phase delay is changed by controlling the value of voltage applied to the two LCVRs, the full-polarization imaging of the system is realized; and the image signal of the target to be detected is collected by the computer and is subjected to image processing. The invention has the ability of subjecting a target to be detected tofull-polarization spectrum detection within the range of visible wavelength or near infrared wavelength, and can achieve varying spatial resolutions in the same detection distance.

Description

Technical field [0001] The invention relates to a variable focal length full polarization spectrum imaging detection system, in particular to an optical system used for spaceborne, airborne and ground-to-ground full polarization spectrum imaging detection. Background technique [0002] Polarization spectral imaging detection can provide information about the target's surface roughness, texture orientation, surface orientation, surface conductivity, material physical and chemical properties, water content, etc., in cloud and atmospheric aerosol detection, geological prospecting, soil analysis, environmental monitoring , Resource investigation, disaster estimation, agriculture, forestry and animal husbandry development, material analysis, marine development and utilization, medical diagnosis and other fields have broad application prospects and economic value. With the development of polarization spectrum imaging detection technology, the development of efficient and reliable polar...

AI Technical Summary

Problems solved by technology

[0004] It can be seen from researches at home and abroad that the main problems of the current polarization imaging detection optical system are: they are all fixed-focus systems, and can only achieve a certain spatial resolution at the same detection distance, and most of the polarization imaging systems selected The component needs to be rotated mechanically when performing polarization measurement, and the polarization detection accuracy is not high enough

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