Dual-channel large-aperture static interference imaging spectrometer
An imaging spectrometer and static interference technology, applied in the field of spectral imaging, can solve problems such as reducing the energy utilization rate of the system
Active Publication Date: 2018-10-02
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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[0007] In the existing large-aperture static interference spectral imaging technology based on the Sagnac interferometer, after the light passes through the transverse shearing interferometer, half of the energy returns to the original optical path, and half of the energy is received by the detector after being imaged by the imaging mirror, that is, the detector can The detected energy is only half of the incident energy, which greatly reduces the energy utilization of the system
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[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] The present invention proposes a dual-channel large-aperture static interference imaging spectrometer, which replaces a mirror in the Sagnac interferometer with a right-angle mirror in the large-aperture static interference spectral imaging technology, so that the light entering the interferometer and the outgoing interference The light of the instrument is separated, which can realize simultaneous detection of dual optical paths and improve ...
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The invention discloses a dual-channel large-aperture static interference imaging spectrometer, which a plane mirror in a Sagnac interferometer with a right-angle mirror, light rays generate offset ina direction (Z direction) perpendicular to a paper surface after being reflected by the right-angle mirror, so that light rays emitted after passing through the interferometer are offset from the incident light rays, thus interference information can be acquired at both ends of a beam splitter of the interferometer, and the dual-channel large-aperture static interference imaging spectrometer hasthe feature of dual channel detection. The dual-channel large-aperture static interference imaging spectrometer has the outstanding advantage of fully utilizing the incident light energy, improving energy utilization rate of the system, and being capable of realizing dual-channel simultaneous detection.
Description
technical field [0001] The invention relates to the technical field of spectral imaging, in particular to a dual-channel large-aperture static interference imaging spectrometer. Background technique [0002] Interferometric spectral imaging technology obtains the interference intensity information of the measured target, uses the Fourier transform relationship between the interferogram and the spectrogram, and restores the spectral information of the target through data processing such as Fourier transform, so it is also called Fourier. Liye transform spectral imaging technology. According to the different acquisition methods of the interferogram, the interferometric spectral imaging technology can be divided into three types: time modulation, space modulation, and space-time joint modulation. [0003] The interferogram of time-modulated interferometric spectral imaging technology is obtained in time series. Through the movement of the moving mirror in the interferometer sy...
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IPC IPC(8): G01J3/45G01J3/02
CPCG01J3/0205G01J3/0208G01J3/0294G01J3/45
Inventor 才啟胜刘怡轩黄旻方煜路向宁韩炜
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI