A polarization hyperspectral imaging device based on an immersion grating

An imaging device and immersion technology, applied in polarization spectrum, measurement device, spectrometry/spectrophotometry/monochromator, etc., can solve the contradiction between moving parts, high precision and light weight, and polarization spectrum equipment cannot Simultaneous acquisition and other issues to achieve the effect of improving accuracy, high luminous flux, and improving detection accuracy

Active Publication Date: 2021-02-02
XI AN JIAOTONG UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to provide a polarization hyperspectral imaging device based on an immersion grating to solve the problems that the existing polarization spectrum equipment cannot obtain spectral polarization information at the same time, there are moving parts, and the contradiction between high precision and light weight

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  • A polarization hyperspectral imaging device based on an immersion grating
  • A polarization hyperspectral imaging device based on an immersion grating

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Please refer to figure 1 and figure 2 , a polarization hyperspectral imaging device based on an immersion grating of the present invention, comprising: a front optical system 4, an entrance slit 5, a collimator mirror 6, an immersion grating 7, a polarization beam splitter 8, a focusing lens 9 and Detector 10. The working principle of the immersion grating 7 selected by the present invention is as follows: figure 1 As shown, including substrate 1, prism 2 and grating 3.

[0029] The incident light enters the front optical system 4 after passing through the entrance pupil 11, and the entrance pupil 11 is arranged at the front optical system 4; into the entrance slit 5. The incident slit 5 is set in front of the collimator 6, and the incident light can enter the collimator 6 through the incident slit 5; the immersion gratin...

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Abstract

The invention discloses a polarized hyperspectral imaging device based on an immersion grating, comprising: an incident slit, a collimating mirror, an immersing grating, a polarization beam splitter, a focusing lens and a detector; the incident slit is arranged on the collimating mirror Front; the immersion grating is set behind the collimating mirror; the polarization beam splitter is p-level, and the number of polarization beam splitters in each level is 2 p‑1 The value range of p is greater than or equal to 1; the first-stage polarization beam splitter is arranged on the optical path of the exit light of the immersion grating; each polarization beam splitter in the second to p stages is respectively arranged on the upper stage The optical path of each outgoing light of the polarizing beam splitter; the number of focusing lenses and detectors are both 2 p Each outgoing light of each polarizing beam splitter in the p-th stage polarizing beam splitter enters a detector through a focusing lens. The invention solves the problems that the existing polarization spectrum equipment cannot obtain spectrum polarization information at the same time, there are moving parts, and the contradiction between high precision and light weight.

Description

technical field [0001] The invention belongs to the technical field of polarization spectrum information, in particular to a polarization hyperspectral imaging device based on an immersed grating (IG grating, Immersed Grating). Background technique [0002] At present, a variety of technical schemes for obtaining polarization spectral image information have been researched and proposed at home and abroad. The main idea is to combine imaging spectroscopy technology with polarization measurement technology, and how to achieve high resolution, self-adaptation, small size and light weight is the research focus. Imaging spectroscopy technology can be roughly divided into three types: filter type, interference type, and dispersion type according to the principle of spectroscopic analysis. Each type has its advantages, disadvantages and scope of application. [0003] The filter-based polarization imaging spectrometer has filter elements in its optical system, and the traditional on...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/447G01J3/02
CPCG01J3/0205G01J3/447
Inventor 唐茜张淳民穆廷魁
Owner XI AN JIAOTONG UNIV
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