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

A technology of interference imaging and static interference, which is applied in the field of optical instruments, can solve the problems of not being able to obtain the full polarization characteristics of the target, achieve simple post-processing signal processing, avoid the influence of electrical noise, and be conducive to popularization and application

Active Publication Date: 2010-08-04
XI AN JIAOTONG UNIV
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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, la...

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

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Embodiment Construction

[0029] The present invention will be further described in detail in conjunction with the accompanying drawings and specific embodiments.

[0030] refer to figure 1 , a passive static coaxial interference imaging spectrum full-polarization detection device, the coaxial setting includes: the most front-end optical telescopic system 1, followed by a static all-optical modulation module 2, followed by a static interference based on a Savoy plate The imaging spectrometer 3 is equipped with an imaging mirror group 4 behind the Sava plate-based static interference imaging spectrometer 3, and the imaging mirror group 4 is followed by a detector 5, which is connected with a signal acquisition and processing system 6.

[0031] The front optical telescopic system 1 is located at the forefront of the whole device, and includes a front optical system objective lens group 11, a diaphragm 12 and a front optical system image square lens group 13 arranged in sequence along the optical axis.

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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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Application Information

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IPC IPC(8): G01J3/45G01N21/21G02B27/28G02B5/00
Inventor 朱京平李杰黄华
Owner XI AN JIAOTONG UNIV
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