A static infrared polarization imaging spectrometer

Abstract

The invention provides a collimating mirror, a microlens array, a relay imaging system and an area array detector arranged sequentially along the optical axis direction of the incident light, a polarizer array is arranged between the collimating mirror and the microlens array, and the micro A static interference system is set between the lens array and the relay imaging system, and the collimator, polarizer array, microlens array and static interference system are coaxial; the polarizer array divides the incident light field into four polarization channels, so that each polarization The channels form transmitted light fields with different polarization states; the static interference system is used to form multiple polarization interference light fields from the transmitted light fields with different polarization states, so as to realize the simultaneous measurement of the polarization interference of four polarization channels. The invention effectively reduces the volume and weight of the whole system, and can realize miniaturization and integration of the infrared polarization snapshot imaging spectrometer 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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