Prism-type spatial heterodyne spectrometer

A space heterodyne and spectrometer technology, which is applied in the field of optical remote sensing detection, can solve the problems of interference degree reduction, achieve the effects of low cost, simple design, avoid energy loss and interference degree reduction

Pending Publication Date: 2018-08-10
GUILIN UNIV OF ELECTRONIC TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This kind of spectrometer has the advantages of hyperspectral resolution, high throughput, and no moving parts. At the same time, it can avoid the problems of energy loss and interference degree reduction caused by grating multi-level diffraction in grating-type spatial heterodyne spectrometers.

Method used

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  • Prism-type spatial heterodyne spectrometer
  • Prism-type spatial heterodyne spectrometer

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Embodiment

[0030] refer to figure 1 , a prism-type spatial heterodyne spectrometer, comprising an entrance diaphragm 1, a collimator lens 2, a beam splitter 5, a first dispersive prism 301, a second dispersive prism 302, a first total reflection mirror 401, and a second total reflection mirror 402. The imaging unit 6 and the detector 7 are different from the prior art in that the rear side of the entrance diaphragm 1 is followed by a collimator lens 2 and a beam splitter 5, and the upper side of the beam splitter 5 is sequentially provided with The rear side of the first dispersive prism 301 and the first total reflection mirror 401, the beam splitter is provided with the second dispersive prism 302 and the second total reflection mirror 402 successively, and the lower side of the beam splitter 5 is provided with the imaging unit 6 and the detector in sequence. device7.

[0031] The beam splitter 5 is a semi-transparent and semi-reflective beam splitting element.

[0032] The materials...

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Abstract

The invention discloses a prism-type spatial heterodyne spectrometer, which comprises an incident diaphragm, a collimating lens, a beam splitter, a first dispersion prism, a second dispersion prism, afirst completely reflecting mirror, a second completely reflecting mirror, an imaging unit and a detector, and is characterized in that the rear side of the incident diaphragm is sequentially provided with the collimating lens and the beam splitter, the upper side of the beam splitter is sequentially provided with the first dispersion prism and the first completely reflecting mirror, the rear side of the beam splitter is sequentially provided with the second dispersion prism and the second completely reflecting mirror, and the lower side of the beam splitter is sequentially provided with theimaging unit and the detector. The spectrometer has the advantages of hyperspectral resolution, high throughout and no moving component. Meanwhile, the spectrometer can also avoid the problems of energy loss and interference reduction caused by grating multi-stage diffraction in a grating spatial heterodyne spectrometer.

Description

technical field [0001] The invention relates to the field of optical remote sensing detection, in particular to a prism-type spatial heterodyne spectrometer. Background technique [0002] Spatial heterodyne spectroscopy is a new type of super-resolution spectral analysis technology that was proposed in the 1970s and rapidly developed due to the advancement of technical conditions in the 1990s. This technology has super-spectral resolution, high throughput, Advantages such as no moving parts. Spatial heterodyne spectroscopy can obtain extremely high spectral resolution within a certain wavelength range. The excellent performance of spatial heterodyne spectroscopy makes it unique in the hyperspectral detection of weak signal targets, and it is used in remote sensing detection of atmospheric trace gases and astronomical observations of interstellar media. [0003] Traditional spatial heterodyne spectrometers use gratings to perform interference modulation. However, gratings h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/45G01J3/28G01J3/14G01J3/02
CPCG01J3/2823G01J3/0208G01J3/14G01J3/45G01J2003/1208
Inventor 叶松李源壮王新强汪杰君王方原甘永莹张文涛秦祖军
Owner GUILIN UNIV OF ELECTRONIC TECH
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