High resolution infrared imaging spectrometer and imaging method thereof

Abstract

The invention discloses a high resolution infrared imaging spectrometer, comprising a front scanning reflector, a front objective group, a slit array, a collimation objective group and a raster prism group, wherein the slit direction of the slit array is perpendicular to the scanning direction of the front scanning reflector; an imaging objective group and an infrared detector focal plane array are successively arranged behind the raster prism group; the reflection surface of the front scanning reflector and the optical axis form an inclined angle of 45 DEG; the slit array is arranged on the focal plane of the front objective group; the slit direction of the slit array is parallel with the horizontal pixel direction of the infrared detector focal plane array. The invention also discloses a high resolution infrared imaging spectrometer imaging method. The high resolution infrared imaging spectrometer effectively solves the contradictions among spatial resolution, spectral resolution and an imaging data rate, realizes spectral image acquisition of a visual field high data rate, greatly increases a spectral image data rate under the premise of guaranteeing resolution, and has the characteristics of compact structure and low cost.

Description

technical field [0001] The invention belongs to the technical field of infrared spectrum imaging, and in particular relates to a high-resolution infrared imaging spectrometer based on a slit array scanning technology and an imaging method thereof. Background technique [0002] Traditional imaging spectrometers need to find a balance between imaging speed and imaging resolution. [0003] Increasing the number of pixels in the spatial dimension of the system means that the system can obtain a larger field of view or have higher resolution for the target, but this puts a lot of pressure on the rate at which the system can obtain spectral images. [0004] In many applications, imaging spectrometers are required to have high spatial resolution, spectral resolution, and high imaging rate at the same time. [0005] Therefore, it is necessary to propose a high-resolution infrared imaging spectrometer, which enables online real-time spectral imaging without sacrificing the imaging r...

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Problems solved by technology

[0006] In view of the deficiencies in the prior art, one of the objectives of the present invention is to provide a high-resolution infrared imaging spectrometer, which is mainly based on the slit array scanning technology, which overcomes the inability of the traditional grating-type imaging spectrometer to simultaneously achieve high frame rate and high resolution. rate problem

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