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Image, high-resolution intensity spectrum and linearly-polarized spectrum detection system and method

A high-resolution, spectral detection technology, applied in the field of polarization state measurement, can solve the problems of time and space mismatch of sequence measurement methods, reduced spectral resolution, and restored intensity spectral error, etc., to achieve crosstalk elimination, spectral resolution improvement, Precise results

Active Publication Date: 2017-08-11
XI AN JIAOTONG UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide an image, high-resolution intensity spectrum and linear polarization spectrum detection system and method, which can solve the problem of time and space mismatch in sequence measurement methods, and can measure fast The goal of changing, and at the same time, it can overcome the shortcomings of the error in the restored intensity spectrum and the serious reduction of spectral resolution in the channel spectrum technology

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  • Image, high-resolution intensity spectrum and linearly-polarized spectrum detection system and method
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  • Image, high-resolution intensity spectrum and linearly-polarized spectrum detection system and method

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[0028] The present invention is described in further detail below in conjunction with accompanying drawing:

[0029] refer to figure 1 The image, polarization and spectrum detection system based on the channel spectrum technology of the present invention is as follows: a telescopic system 1, a first retarder 2, a second retarder 3, a Wollaston prism 4, a Savart polarizer 5, a first Three retarder 6, analyzer 7, imaging mirror 8 and CCD 9. The telephoto system includes a lens 101 , a field stop 102 and a lens 103 . The field stop 102 is located on the back focal plane of the lens 101 and coincides with the front focal plane of the lens 103 .

[0030] Let the main optical axis be the z-axis, construct an xyz coordinate system, the xyz coordinate system satisfies the right-hand rule, the angle between the fast axis direction of the first retarder 2 and the positive direction of the x-axis is 0°, and the angle of the second retarder 3 The included angle between the fast axis di...

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Abstract

The invention discloses an image, high-resolution intensity spectrum and linearly-polarized spectrum detection system and method. The system is equipped with a telescope system for collimation, a first delayer, a second delayer, a Wollaston prism, a Savart polarizer, a third delayer, a polarization analyzer, an imaging mirror and a CCD detector from the left to right in sequence along a primary optical axis of incident rays. The incident rays are changed into parallel light after collimation of the front telescope system; the parallel light passes through the first delayer, the second delayer, the Wollaston prism, the Savart polarizer, the third delayer, the polarization analyzer and the imaging mirror in sequence; and finally, two pieces of three-channel interferograms are obtained on the CCD detector. The method can solve the problem of time and space mismatch of a sequence measuring method, can measure fast changing targets in real time, and meanwhile, can overcome the defects that errors exist in recovering the intensity spectrum and spectrum resolution is badly reduced in the channel spectrum technology.

Description

technical field [0001] The invention belongs to the technical field of polarization state measurement, and relates to a device and method for acquiring images, linear polarization and spectra, in particular to a detection system and method for images, high-resolution intensity spectra and linear polarization spectra. Background technique [0002] The Stokes vector spectrum can completely describe the spectrum and polarization information of the target, and the spectrum and polarization information are of great significance to the remote sensing of the earth. Imaging spectral polarization technology is a new type of optical detection method. At present, only a few scientific research institutions in the world have carried out related research work. In particular, the Interference Spectropolarimeter (ISP) is still in the stage of principle exploration and experimental verification, and its technical means are not yet mature. [0003] At present, the conventional methods of me...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/30G01J3/447
CPCG01J3/30G01J3/447
Inventor 张淳民权乃承穆廷魁
Owner XI AN JIAOTONG UNIV
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