Three-channel and single-Wollaston prism polarization imaging device and polarization information detecting method

A polarization imaging, three-channel technology, applied in optical components, optics, instruments, etc., can solve problems such as device redundancy, and achieve the effect of high work efficiency, simple structure without redundancy, and improved resolution

Inactive Publication Date: 2015-07-22
XIDIAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

If the polarization analysis of the whole link is carried out, there is still redundancy of components

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  • Three-channel and single-Wollaston prism polarization imaging device and polarization information detecting method
  • Three-channel and single-Wollaston prism polarization imaging device and polarization information detecting method
  • Three-channel and single-Wollaston prism polarization imaging device and polarization information detecting method

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Embodiment Construction

[0037] The structure of the inventive three-channel single Wollaston prism polarization imaging device and the detailed process of detecting and analyzing the polarization state information of the target are clearly and completely described below in conjunction with the accompanying drawings.

[0038] refer to figure 1, The polarization imaging device of the present invention is composed of a front optical lens group 1, a polarization modulation module 2, a focus detection module 3 and a data processing module 4 arranged in sequence along the incident light direction. Wherein: the front optical mirror group 1 is made up of filter plate 11, retractable lens 12, field mask plate 13, collimating lens 14, these devices are placed on the common optical axis, and arranged in order along the incident light direction; the retractable lens 12 The focal length f is adjusted according to the imaging distance. The field mask 13 is a stainless steel rectangular slit with a dark matte paint...

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Abstract

The invention discloses a three-channel and single-Wollaston prism polarization imaging device and a polarization information detecting method and aims to solve the problem that the prior art is redundant in structure and low in resolution and cannot detect target polarization information in real time. The polarization imaging device comprises a front optical lens group (1), a polarization modulation module (2), a focusing imaging module (3) and a data processing module (4), wherein the polarization modulation module (2) is a polarization modulation structure composed of a non-polarization beam-splitting prism (21), a linear polarizer (22) and a single Wollaston prism (23), three polarization azimuth angle images of a target can be obtained by one exposure through the polarization modulation structure, and super-resolution reconstruction and registration and polarization state analysis and fusion are sequentially performed on the three polarization azimuth angle images through the data processing module (4) to obtain a target image containing the target polarization information and scene detail information. The three-channel and single-Wollaston prism polarization imaging device is simple in structure, high in space resolution and applicable to target detection and environment monitoring.

Description

technical field [0001] The invention belongs to the field of photoelectric imaging detection, in particular to a polarization imaging device and a polarization information detection method thereof, which are used for target detection, material identification and environmental monitoring. Background technique [0002] Polarization is another dimensional property of light waves different from intensity, phase, and spectrum, and it provides important information on the properties of the target surface. Polarization imaging detection can improve the recognition rate of the target in the cluttered background, or it can be used to improve the contrast and clarity of the image. The polarization characteristics of target optical radiation are usually characterized by Stokes parameters which are easy to measure. The common way to detect the linear polarization component in the Stokes parameter is to take four different polarization azimuth images, such as I 0° , I 45° , I 90° and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/28
CPCG02B27/286
Inventor 邵晓鹏曹蕾刘飞苏来利王琳韩平丽
Owner XIDIAN UNIV
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