Photoelastic-modulation Fourier transform interference imaging spectrometer

A Fourier transform and elastic-optical modulation technology, applied in the field of imaging spectrometers, can solve the problems of slow imaging speed and insufficient anti-vibration ability, and achieve the effects of improving imaging resolution, easy installation and debugging, and reducing aberrations

Inactive Publication Date: 2013-08-07
ZHONGBEI UNIV
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Problems solved by technology

[0005] The invention aims to overcome the shortcomings of the traditional Michelson interferometer such as slow imaging speed and insufficient anti-vibration ability, and provide a fast, high-flux, high-speed interferometer with no mechanical movement, high spectral resolution, high modulation speed and sufficient luminous flux. An Elastic-Optic Modulation Fourier Transform Interferometric Imaging Spectrometer with Spectral Resolution and High Stability

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  • Photoelastic-modulation Fourier transform interference imaging spectrometer
  • Photoelastic-modulation Fourier transform interference imaging spectrometer
  • Photoelastic-modulation Fourier transform interference imaging spectrometer

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Embodiment Construction

[0027] The following describes the detailed technical solutions of the present invention with reference to the accompanying drawings and embodiments. This embodiment is only an example, and the technology of the present invention is not limited to this embodiment.

[0028] Such as figure 1 As shown, the elastic-optical modulation Fourier transform interferometric imaging spectrometer includes: scanning mirror 1, entrance pupil 2, off-axis three-mirror telescope, field diaphragm 5 and elastic-optic modulation interferometer, wherein: off-axis three The reverse telescope includes a spherical mirror 3, aspheric mirrors 4, 6; the elasto-optic modulation interferometer includes a polarizer 7, an analyzer 11, a static birefringent crystal 8, an elasto-optic modulator 9, an imaging mirror 12 and a detector 13.

[0029] The incident light from the target is reflected by the scanning mirror 1 and passes through the field diaphragm 2, and then reflected, focused, narrowed and collimated...

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Abstract

The invention discloses a photoelastic-modulation Fourier transform interference imaging spectrometer allowing for high-speed scanning. The photoelastic-modulation Fourier transform interference imaging spectrometer comprises a scanning mirror, an entrance pupil, an off-axis three-mirror telescope composed of a spherical mirror, an aspherical mirror and a field diaphragm, and a photoelastic-modulation interferometer. Incident light from a target is reflected by the scanning mirror, enters the off-axis three-mirror telescope through the entrance pupil, is reflected, focused, demagnified and collimated by the off-axis three-mirror telescope, then enters the photoelastic-modulation interferometer for double-refraction interference modulation, and is finally subjected to spectral imaging by point scanning. The photoelastic-modulation Fourier transform interference imaging spectrometer has such advantages that imaging scanning is fast, vibration resistance is high, the spectrometer is impervious to detector picture elements, and spectral resolution and luminous flux are high.

Description

technical field [0001] The invention relates to an imaging spectrometer, in particular to a fast, high-throughput, high-spectral resolution and high-stability elasto-optic modulation type Fourier transform interference imaging spectrometer. Background technique [0002] Spectral imaging technology appeared in the 1980s. It can perceive the information of the target in the spatial domain and spectral domain, obtain the two-dimensional space and one-dimensional spectral data of the target, and form a three-dimensional data cube (data cube). Due to its excellent information acquisition ability, it has developed rapidly over the past two decades, and has been widely used in aerospace remote sensing, industry, agriculture, biomedicine, astronomical detection, atmospheric detection, environment and disaster monitoring, and military fields. It has become another powerful means of optical detection technology. [0003] It is quite difficult to detect weak visible and infrared radia...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/45
Inventor 陈友华陈媛媛王召巴王志斌王立福张瑞王艳超魏海潮
Owner ZHONGBEI UNIV
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