Device for detecting full polarization of passive and static coaxial interference imaging spectrum

Abstract

The invention relates to a device for detecting full polarization of a passive and static coaxial interference imaging spectrum. The device comprises a pre-optical telescopic system, a static all-optical modulation module, a Savart plate-based static interference imaging spectrometer, an imaging lens set and a detector which are coaxially arranged, wherein the rear side of the detector is connected with a signal acquiring and processing system; light emitted by a target source is aligned by the pre-optical telescopic system, then is modulated by the static all-optical modulation module 2 and is changed into two beams of polarized light after passing through the Savart plate-based static interference imaging spectrometer; and the two beams of light are converged on the detector 5, are imaged, generate interference and finally are sent into the signal acquiring and processing system 6 after passing through the imaging set. The device is characterized by simple and compact structure, no moving parts, large luminous flux, and capability of acquiring target two-dimensional space images, one-dimensional spectrum information and complete polarization information once.

Description

technical field [0001] The invention relates to the technical field of optical instruments, in particular to a trinity passive static coaxial interference imaging spectrum full polarization detection device capable of obtaining target two-dimensional intensity, interference spectrum and full polarization characteristics at the same time. Background technique [0002] In the 1980s, the American Aerodynamics Laboratory (JPL) proposed the concept of an imaging spectrometer, which integrates an imager and a spectrometer, and can simultaneously obtain two-dimensional spatial information and one-dimensional spectral information of the target, which has attracted great attention from various countries. In more than 20 years, imaging has developed from a multi-channel dispersive imaging spectrometer to a hyperspectral interferometric imaging spectrometer, among which the Savart Plate interferometric imaging spectrometer with a coaxial optical path has the advantages of compact struct...

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Problems solved by technology

[0004] In view of the problem that the current Savart Plate hyperspectral imager cannot obtain the full polarization characteristics of the target, the purpose of the present invention is to provide a simple and compact structure, no moving parts, large luminous flux, and one-time acquisition of the target two-dimensional space Passive Static Coaxial Interferometric Imaging Spectral Full Polarization Detection Device for Image, One-dimensional Spectral Information and Complete Polarization Information

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