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Polarization interference imaging spectrometer based on stepped phase reflecting mirror and manufacturing method

A technology of interference imaging and mirrors, which is applied in spectrometry/spectrophotometry/monochromator, radiation pyrometry, instruments, etc., to achieve the effects of fast measurement speed, high integration, and large amount of information

Active Publication Date: 2018-04-17
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to solve the problem of simultaneous acquisition of polarization information, image information and spectral information in the existing target scene and the miniaturization and integration of polarization imaging spectroscopic instruments, the present invention provides a polarization interference imaging spectrometer based on a stepped phase mirror and a manufacturing method

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  • Polarization interference imaging spectrometer based on stepped phase reflecting mirror and manufacturing method
  • Polarization interference imaging spectrometer based on stepped phase reflecting mirror and manufacturing method
  • Polarization interference imaging spectrometer based on stepped phase reflecting mirror and manufacturing method

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specific Embodiment approach 1

[0044] Specific implementation mode 1. Combination Figure 1 to Figure 15 In this embodiment, the polarization interference imaging spectrometer based on the step phase mirror includes a collimator 1, a four-channel polarizer 2, a four-channel imaging mirror 3, a beam splitter 4, a plane mirror 5, and a double-period step phase mirror 6. Relay imaging mirror 7 and area array detector 8 .

[0045] 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, so that the target The light field is modulated into four different polarization states after passing through the four-channel polarizer 2 . The outgoing light field modulated by the four-channel polarizer 2 can be four linear polarization states with different polarization directi...

specific Embodiment approach 2

[0063] Specific embodiment two, combine Figure 16 This embodiment is described. This embodiment is the manufacturing method of the polarization interference imaging spectrometer based on the stepped phase mirror described in the first embodiment, and the method of combining the visible laser array calibration with the infrared camera observation is used for the integrated manufacturing of the system. The specific method is as follows:

[0064] (1) First, a 2×2 visible laser array is used to calibrate the optical axis of the system. The laser array has four laser sources, and the distance between the four laser sources is equal to the center distance between the polarization units of the four-channel polarizer. By adjusting the position and angle of the 2×2 laser array source, the four optical axes of the 2×2 laser array are parallel.

[0065] (2) Insert a 45° visible beam splitting prism in the optical path to divide the laser array into two paths. By adjusting the position...

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Abstract

The invention relates to a manufacturing method of a polarization interference imaging spectrometer based on a stepped phase reflecting mirror, and relates to the technical field of infrared polarization imaging spectral measurement instruments. The polarization interference imaging spectrometer achieves the purposes of simultaneous acquisition of polarization information, image information and spectral information in existing target scenes and miniaturization and integration of polarization imaging spectral instruments. The polarization interference imaging spectrometer comprises a collimating mirror, a four-channel polarizer, a four-channel imaging mirror, a beam splitter, a plane reflecting mirror, the dual-cycle stepped phase reflecting mirror, a relay imaging mirror and an area arraydetector. The modulation of image field polarization and interference is achieved through light field coupling among the four-channel polarizer, the four-channel imaging mirror and the dual-cycle stepped phase reflecting mirror, so that a four-channel polarization interference image of a target scene is obtained, the polarization, image and spectral information of the target scene can be obtainedby one-time scanning, and the polarization interference imaging spectrometer has the advantages of being miniature, lightweight, simple in structure, high in integration and measurement speed, large in information amount and the like.

Description

technical field [0001] The present invention relates to the technical field of infrared polarization imaging spectrum measuring instruments, and relates to an infrared polarization imaging spectrum instrument, in particular to a method for polarizing a light field by using a four-channel polarizer, a four-channel imaging mirror and a double-period stepped phase reflector. Modulation, array imaging and distributed phase modulation to realize the miniature infrared polarization interference imaging spectrometer for 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-related inf...

Claims

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Application Information

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IPC IPC(8): G01J3/453G01J3/02
CPCG01J3/0205G01J3/453
Inventor 吕金光梁中翥秦余欣梁静秋王维彪孟德佳陶金
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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