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Snapshot type full-polarization imaging detection device

A detection device and full polarization technology, which is applied in the field of optical remote sensing detection and polarized radiation detection, can solve the problems that two-dimensional data are not obtained at the same time, and it is difficult to truly reflect the distribution information of polarized radiation of two-dimensional space targets, so as to achieve high work efficiency and data Reorganization processing is simple and clear, and the effect of association is effective

Inactive Publication Date: 2014-04-02
XI AN JIAOTONG UNIV
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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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  • Snapshot type full-polarization imaging detection device
  • Snapshot type full-polarization imaging detection device
  • Snapshot type full-polarization imaging detection device

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] Such as figure 1 As shown, a snapshot type full polarization imaging measuring device of the present invention includes a pre-optical mirror group 100, a full polarization modulation module 200, an imaging mirror group 300, an area array detector 400, and a data acquisition system sequentially arranged along the incident light direction. The processing system 500 is composed of; the front optical mirror group 100 is composed of the objective lens 110, the field diaphragm 120, and the collimating mirror 130; the full polarization modulation module 200 is composed of three Wollaston prisms 210, 220, 230 with the same structure and A quarter wave plate 240 is formed; the end faces of the same shape in the three Wollaston prisms 210, 220, and 230 are placed side by side in the upper, middle and lower modes; the optical axis directions of the two wedges in ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J4/00G02B27/28
Inventor 穆廷魁张淳民李祺伟贾辰凌魏宇童陈清颖
Owner XI AN JIAOTONG UNIV
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