Static infrared polarization imaging spectrometer

Abstract

The system comprises a collimating mirror, a micro-lens array, a relay imaging system and an area array detector which are sequentially arranged along the optical axis direction of incident light, a polaroid array is arranged between the collimating mirror and the micro-lens array, and a static interference system is arranged between the micro-lens array and the relay imaging system. The collimating mirror, the polaroid array, the micro lens array and the static interference system are coaxial; the polarizing film array divides an incident light field into four polarization channels, so that each polarization channel forms a transmission light field with different polarization states; and the static interference system is used for enabling transmission light fields with different polarization states to form a multi-polarization interference light field so as to realize synchronous measurement of polarization interference of four polarization channels. According to the invention, the size and weight of the whole system are effectively reduced, and the microminiaturization and integration of the infrared polarization snapshot imaging spectrometer can be realized while the polarization state, imaging and optical path difference are precisely modulated.

Description

technical field [0001] The invention belongs to the technical field of infrared imaging spectrum detection instruments, and in particular relates to a static real-time infrared polarization snapshot imaging spectrometer and a method for extracting polarization spectrum information obtained by the spectrometer. Background technique [0002] Polarization imaging spectroscopy technology can obtain the image, spectrum and polarization information of the observation target at the same time. It is a new multi-dimensional information acquisition technology developed on the basis of imaging spectroscopy technology and polarization imaging technology. Polarization imaging spectrometer is a high-tech photoelectric measuring instrument that combines the functions of camera, spectrometer and polarimeter. It is a hyperdata cube that can obtain multi-dimensional information of the target. The polarization information of each spectral segment greatly increases the amount of information obt...

AI Technical Summary

Problems solved by technology

The time-sharing polarization imaging spectrometer needs to obtain multiple polarization maps in sequence, and the detection time is relatively long

At the same time, since the four components of the Stokes vector need to measure the same target under the same conditions, when measuring a moving target, the scene changes with time or the environment changes with time, which will bring measurement errors and false information

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