Compact micro snapshot channel modulation full polarization imaging detection device and method

Abstract

The invention discloses a compact micro snapshot channel modulation full polarization imaging detection device and method. The detection device comprises an object lens, a full polarization modulation module and a surface array detector which are sequentially arranged along incident light, wherein the full polarization modulation module comprises a first birefringence prism, a first half-wave plate, a second birefringence prism, a second half-wave plate, a third birefringence prism, a third half-wave plate, a fourth birefringence prism and a linear polarizer which are sequentially arranged along the incident light, the parts cling to each other, the linear polarizer is arranged clinging to a photosurface of the surface array detector, and the photosurface of the surface array detector is perpendicular to an optical axis of the detection device and is at the image plane position of the object lens. The detection device is advantaged in that the full polarization modulation module capable of realizing combination prism light splitting is employed, the interference intensity information of a detected two-dimensional target through channel modulation at the certain time can be acquired through shooting an image, and two-dimensional space polarization graphs corresponding to all the Stokes polarization parameters can be acquired through utilizing a Fourier demodulation algorithm for processing.

Description

technical field [0001] The invention belongs to the field of optical remote sensing detection, and relates to a polarization imaging device used in the field of polarized radiation detection, in particular to a compact micro-snapshot channel-modulated full-polarization imaging detection device capable of obtaining real-time full polarization information of two-dimensional space objects and its detection method. Background technique [0002] The electromagnetic waves reflected by objects contain important polarization remote sensing information, which can not only be used to remove background noise, provide high-contrast surface, shape, shadow and roughness information, but also can be used to invert physical and chemical properties such as size and concentration of the target . Polarization imaging is an advanced remote sensing detection technology that simultaneously acquires target space and polarization information. It has certain potential for improving the efficiency a...

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Problems solved by technology

However, this series of technologies requires a combination of imaging and collimating mirrors, which increases the size of the system and is greatly affected by environmental changes.

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