Mobile broadband Fourier transform infrared imaging spectrometer

Abstract

A mobile broadband Fourier transform infrared imaging spectrometer comprises a Michelson interferometer, an infrared optical telescoping system, a built-in cold source, a collimating lens, a two-side focusing lens, a medium wave surface array infrared detector, a long wave surface array infrared detector and a system circuit module. The Michelson interferometer comprises two rigid swing arms, a fixed rotating shaft, two three-dimensional corner cube mirrors and a spectroscope, a first input port and a first output port are arranged in front of one three-dimensional corner cube mirror, and a second input port and a second output port are arranged in front of the other three-dimensional corner cube mirror. The optical axis of the infrared optical telescoping system and the optical axis of the first input port are collinear; the built-in cold source and the collimating lens are arranged coaxially in sequence, the optical axis of the built-in cold source and the collimating lens and the optical axis of the first output port are collinear; one focusing lens and the medium wave surface array infrared detector are arranged coaxially in sequence, the optical axis of the focusing lens and the medium wave surface array infrared detector are collinear; the other focusing lens and the medium wave surface array infrared detector are arranged coaxially in sequence, and the optical axis of the focusing lens and the medium wave surface array infrared detector are collinear.

Description

technical field [0001] The invention relates to an infrared imaging spectrometer, in particular to a mobile wide-band Fourier transform infrared imaging spectrometer capable of realizing high-precision hyperspectral imaging of a target in two bands of medium-wave infrared and long-wave infrared. Background technique [0002] Since the birth of the first imaging spectrometer in the 1980s, infrared imaging spectrometer has made great progress in technology and application. Infrared imaging spectrometer has the characteristics of "integration of image and spectrum", that is, combining the characteristics of traditional spectrometer and photoelectric imaging technology, it can provide image two-dimensional spatial information and high-resolution spectral information at the same time, and realize the detection and depth analysis of the target scene . It has comprehensive imaging analysis capabilities, high spectral resolution and good platform versatility, and has a wide range o...

AI Technical Summary

Problems solved by technology

However, this device still has the defect of inaccurate scanning when shaking, so the applicable environment is limited

In addition, the current infrared imaging spectrometer has a narrow imaging band and cannot fully detect the spectral information of the target, which limits its application. In addition, the infrared imaging spectrometer will also be affected by background radiation when imaging the target, resulting in the detection accuracy of the target spectrum. reduction of

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