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Light path structure of full reflective high resolution large visual field fourier transform imaging spectrograph

A technology of Fourier transform and imaging spectrometer, which is applied in the field of imaging spectrometer and high-resolution and large field of view imaging spectrometer, can solve the problems that have not been involved in the implementation method of high-resolution total reflection Fourier transform imaging spectrometer, and achieve high resolution, The effect of wide field of view and wide spectral range

Inactive Publication Date: 2007-10-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

Although we have proposed a total reflection Fourier transform imaging spectrometer using Fresnel double-sided mirrors in Chinese patent 200510055609.X, we have not yet involved the realization of a high resolution, large field of view total reflection Fourier transform imaging spectrometer

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  • Light path structure of full reflective high resolution large visual field fourier transform imaging spectrograph
  • Light path structure of full reflective high resolution large visual field fourier transform imaging spectrograph
  • Light path structure of full reflective high resolution large visual field fourier transform imaging spectrograph

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Embodiment Construction

[0029] The total reflection type high-resolution large field of view Fourier transform imaging spectrometer described in the present invention is characterized in that a group of Fresnel double-sided mirrors and three three-reflection optical structures are used in the optical system; The structures serve as the front optical system, the rear collimation system and the reflective cylindrical mirror system of the Fourier transform imaging spectrometer respectively.

[0030] Adopt now in conjunction with Fig. 1 to explain as follows to the working principle of the present invention:

[0031] As shown in the figure, the device of the present invention consists of a three-reflection front telescope 1, a slit 2, a Fresnel double-sided mirror 3, a three-reflection rear collimator mirror 4, a three-reflection cylindrical mirror 5 and a focal plane detection Device 6 is composed.

[0032] The three-reflection front telescope 1 images the long-distance linear object on the slit 2, whi...

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Abstract

An optical path structure of Fourier transform imaging spectrograph with high resolution and large field in total reflection type is prepared for imaging object on one-dimensional slit by three-reflection mode (TRM) pre-telescope, projecting slit image on Fresenel double-surface mirror and cutting slit image to be two correlation beams with certain cut angle, making two said beam be parallel beam after they are passed through TRM post collimator then projecting it to TRM cylindrical mirror in certain angle, focusing and projecting to surface of focal-plane detector for forming one-dimensional interference fringe and another-dimensional grey image distribution.

Description

technical field [0001] The invention relates to an optical path structure of a total reflection high-resolution large-field Fourier transform imaging spectrometer, which belongs to the technical category of imaging spectrometers in the field of earth observation; in particular, it relates to high-resolution large-field imaging spectrometer technology. Background technique [0002] Fourier Transform Imaging Spectrometer belongs to Imaging Interferometer. Compared with the traditional dispersive imaging spectrometer, the Fourier transform imaging spectrometer has the characteristics of large input luminous flux and high spectral resolution, so it is especially suitable for Hyper Spectral Imaging in the field of aerospace and earth observation. From the perspective of optical principles, Fourier transform imaging spectrometers can be divided into two categories: temporally modulated (Temporarily Modulated) interferometric imaging spectrometers and spatially modulated (Spatially...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/453G01J3/18
Inventor 廖宁放张丹赵达尊方俊永梁敏勇
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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