Image, High Resolution Intensity Spectroscopy and Linear Polarization Spectroscopy Detection System and Method

A high-resolution, spectral detection technology, applied in the field of polarization state measurement, can solve the problems of sequence measurement method time and space mismatch, spectral resolution reduction, restoration intensity spectral error, etc., to achieve crosstalk elimination, spectral resolution improvement, The result is precise effect

Active Publication Date: 2019-04-12
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 Spectroscopy and Linear Polarization Spectroscopy Detection System and Method
  • Image, High Resolution Intensity Spectroscopy and Linear Polarization Spectroscopy Detection System and Method
  • Image, High Resolution Intensity Spectroscopy and Linear Polarization Spectroscopy Detection System and Method

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[0028] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0029] refer to figure 1 , the image, polarization and spectrum detection system based on channel spectroscopy technology of the present invention is: along the incident light, a telephoto system 1, a first retarder 2, a second retarder 3, a Wollaston prism 4, a Savart polarizer 5, a Three retarders 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, and 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 angle between the fa...

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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 an image, linear polarization and spectrum, in particular to an image, high-resolution intensity spectrum and linear polarization spectrum detection system and method. 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 detection of the earth. As a new optical detection method, imaging spectral polarization technology is currently only carried out by a few scientific research institutions in the world. 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 measurement methods of polarizati...

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Application Information

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Patent Type & Authority Patents(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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