Infrared polarized interference imaging spectrometer based on half-step half-plane phase reflector
A technology of interference imaging and infrared polarization, which is applied in polarization spectroscopy, interference spectroscopy, spectrometry/spectrophotometry/monochromator, etc., can solve the problem of increasing the time for system data acquisition and bulky infrared polarization imaging spectrometer system , low efficiency and other issues, to achieve the effect of simple structure, large amount of information, and high integration
Active Publication Date: 2018-06-01
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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[0004] The present invention provides an infrared polarization interference imaging spectrometer based on a half-step and half-plane phase reflector to solve the problems that the existing infrared polarization imaging spectrometer system is bulky, increases the time for system data acquisition and leads to low efficiency, etc.
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[0034] combine Figure 1 to Figure 18To illustrate this embodiment, the infrared polarization interference imaging spectrometer based on the half-step and half-plane phase mirror proposed by the present invention includes a collimator 1, a four-channel polarizer 2, a four-channel imaging mirror 3, a beam splitter 4, a half-step and a half Planar phase mirror 5 , half-step half-plane phase mirror 6 , relay imaging mirror 7 and area detector 8 .
[0035] The collimator 1 collimates the incident light carrying the target image, spectrum and polarization information into parallel light, and the four-channel polarizer 2 divides the parallel light field into four parallel polarization channels according to different polarization states in the transverse space. The incident light field is modulated into four different polarization states by the four-channel polarizer 2, and the light field modulated by the four-channel polarizer 2 can be four linear polarization states with different...
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The invention relates to an infrared polarized interference imaging spectrometer based on a half-step half-plane phase reflector, and relates to the technical field of infrared polarized interferenceimaging spectral measurement instruments, and solves a problem of the simultaneous obtaining of polarization information, image information and spectrum information in a conventional target scene andthe problems of the miniaturization and integration of a polarized imaging spectral instrument. The spectrometer comprises a collimating mirror, a four-channel polarizer, a four-channel imaging mirror, a beam splitter, two half-step half-plane phase reflectors, a relay imaging mirror, and a plane-array detector. Through the optical field coupling of the four-channel polarizer, the four-channel imaging mirror and the two half-step half-plane phase reflectors, the spectrometer achieves the combined modulation of imaging optical field polarization and interference, thereby obtaining a four-channel polarized interference image of the target scene. The spectrometer can obtain the polarization, imaging and spectral information of the target scene at the same time through one scanning operation.The spectrometer is small in size, is light in weight, is simple in structure, is high in integration, is high in measurement speed, and is large in quantity of information.
Description
technical field [0001] The present invention relates to an infrared polarization interference imaging spectrometer in the technical field of infrared polarization imaging spectrum measuring instruments, in particular to a method for polarization modulation of a light field by using a four-channel polarizer, a four-channel imaging mirror and a half-step half-plane phase reflector. A four-channel miniature infrared polarization interference imaging spectrometer with array imaging and distributed phase modulation to achieve polarization image field interference. Background technique [0002] Image features, spectral features, and polarization features are important means for people to identify substances. Effective detection of target image, spectral, and polarization features greatly improves people's ability to understand the world. Image feature detection is used to record the position and intensity information of objects. Spectral feature detection can obtain wavelength-rel...
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IPC IPC(8): G01J3/28G01J3/447G01J3/45G01J3/02
CPCG01J3/021G01J3/2823G01J3/447G01J3/45
Inventor 梁中翥吕金光梁静秋孟德佳陶金秦余欣王维彪
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI