Snapshot type full-polarization imaging detection device

Abstract

The invention discloses a snapshot type full-polarization imaging detection device, which can be used for acquiring two-dimensional spatial polarization information in real time. The snapshot type full-polarization imaging detection device consists of a front optical lens group, a full-polarization modulation module, an imaging lens group, an area-array detector and a data acquiring and processing system which are arranged in sequence along a light incidence direction. In the snapshot type full-polarization imaging detection device, the full-polarization modulation module consisting of three Wollaston prisms is adopted, the full-polarization information, including respective corresponding two-dimensional spatial images of 0-degree, 90-degree, + / -45-degree, levorotation and dextrorotation circular polarization components, of a detected target at a certain moment and at a certain detection azimuth angle can be obtained by snapshotting one frame of image, and a corresponding two-dimensional spatial graph of all Stokes polarization parameters can be obtained by processing with a simple algebra algorithm. The snapshot type full-polarization imaging detection device has a potential application value in the fields of astronomical observation, space exploration, earth remote sensing, machine vision, biomedical diagnosis and the like.

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 snapshot type full polarization imaging detection device capable of acquiring full polarization information of a two-dimensional space target in real time. 【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 and accuracy of target detection, identificati...

AI Technical Summary

Problems solved by technology

For the above two devices, in order to obtain the corresponding polarization image in another dimension (perpendicular to the length direction of the slit), the target and the system need to move relatively, and the push-broom mode is often used to obtain data, so the two-dimensional data are not obtained simultaneously. It is difficult to truly reflect the polarized radiation distribution information of a two-dimensional space target at a specific azimuth at a specific moment

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