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Fourier transform hyperspectral imaging device based on high speed double reflection rotating mirror

A hyperspectral imaging and Fourier transform technology, applied in measurement devices, interference spectroscopy, spectrometry/spectrophotometry/monochromator, etc. Optical path difference nonlinearity and other problems, to achieve the effect of improving resolution, improving optical path difference, and improving real-time performance

Pending Publication Date: 2019-02-01
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0024] The purpose of the present invention is to overcome the problems of poor stability and slow measurement speed in existing Michelson interferometers, as well as the problems of non-linear optical path difference, high requirements for rotating mirror materials, and large loss of light energy in high-speed rotating mirror transmission interference spectrometers. , and provide a Fourier transform hyperspectral imaging device based on high-speed double-reflection rotating mirror

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  • Fourier transform hyperspectral imaging device based on high speed double reflection rotating mirror

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0043] Such as figure 1 A Fourier transform hyperspectral imaging device based on a high-speed double-reflection rotating mirror is shown, including a collimator mirror 1, a beam splitter mirror 2, a first mirror 3, a second mirror 4, and a first hollow retroreflector 5. The second hollow retroreflector 6, the detector 8, the double-reflection rotating mirror 7 and the motor (not shown in the figure) that drives the double-reflection rotating mirror 7 to rotate. The motor adopts a high-speed permanent magnet with NdFeB as the magnetic core DC motor; the two reflective surfaces of the double-reflection rotating mirror 7 are coated with a high-reflection film; the rotation axis of the double-reflecting rotating mirror 7 is parallel to the mirror surfaces of the first reflector 3 and the second reflector 4; the surface of the beam splitter 2 Coa...

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Abstract

The invention relates to an overspeed detection hyperspectral imaging technique, and provides a Fourier transform hyperspectral imaging device based on a high-speed double reflection rotating mirror to solve the problem of nonlinearity caused by an optical path difference of a high-speed rotating mirror transmission type interference spectrometer. The device comprises a collimating mirror, a beamsplitting mirror, a first reflecting mirror, a second reflecting mirror, a first hollow retro-reflector, a second hollow retro-reflector, a detector and the double reflection rotating mirror. Incidentlight is incident on a beam splitter and is divided into reflected light and transmitted light. The reflected light enters the first hollow retro-reflector after being reflected by the first reflecting mirror and the double reflection rotating mirror. Then the reflected light returns back to the double reflection rotating mirror at 180 degrees, and is then reflected to the beam splitter by the double reflection rotating mirror and the first reflecting mirror. The transmitted light enters the second hollow retro-reflector after being reflected by the second reflecting mirror and the double reflection rotating mirror. Then the reflected light returns back to the double reflection rotating mirror at 180 degrees, and is then reflected to the beam splitter by the double reflection rotating mirror and the second reflecting mirror. The interference light generated by the reflected light and the transmitted light is received by the detector.

Description

technical field [0001] The invention relates to the technical field of ultra-speed detection hyperspectral imaging, in particular to a Fourier transform hyperspectral imaging device based on high-speed double-reflection rotating mirrors. Background technique [0002] Imaging spectroscopy technology is a new generation of optical detection technology developed in the 1980s. It takes the spectral analysis theory of objects as the core and integrates optical system design, object imaging technology, photoelectric detectors, signal processing and information mining and spectral information transmission. theory and other techniques. Imaging spectroscopy technology combines the advantages of spectral technology and imaging technology, and can be used to analyze the image and spectral information of the target object. These image information and spectral information constitute the three-dimensional data cube of the target object. In the three-dimensional data cube, the image profi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28G01J3/45
CPCG01J3/2823G01J3/45
Inventor 魏儒义王鹏冲王飞橙胡炳樑吴银花张鹏昌韩意庭卫翠玉
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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