Focus-adjustable snapshot thermal infrared hyperspectral camera

Abstract

The invention discloses a focus-adjustable snapshot thermal infrared hyperspectral camera. The system is composed of a focus-adjustable telescope, an objective lens, a field diaphragm, a micro-lens array, a gradual filter, a detector array, a low-temperature system and a data acquisition and processing system, wherein the focus-adjustable telescope can realize combination of large-range capture and accurate identification through multi-time zooming, the micro-lens array realizes a scene copying function, and the gradual change optical filter performs light splitting on a spectrum. The detector array obtains image data at the focal plane, and a complete three-dimensional data cube is obtained after data processing. Compared with a traditional spectral imaging technology in which data is obtained through slit light splitting and time sharing, the system has the advantages of being compact in structure, high in anti-interference capacity, good in real-time performance, high in sensitivity and the like. By combining with a focus-adjustable telescope, high-resolution imaging can be realized; and by combining the advantages of the thermal infrared spectrum in dynamic target identification and detection, the focus-adjustable snapshot thermal infrared hyperspectral camera can be effectively applied to the fields of chemical gas detection, dynamic target identification and detection and the like.

Description

Technical field: [0001] The invention relates to an adjustable-focus snapshot thermal infrared hyperspectral camera, in particular to a thermal infrared hyperspectral imaging platform that can obtain data in real time without a scanning device, relying on an adjustable focus telescope, microlens array and linear gradient filter A focusable snap-shot thermal infrared hyperspectral camera designed with light sheet and other components. Background technique: [0002] The atmospheric window of long-wave infrared is 8-14 μm, which is the band where the thermal radiation energy of objects at room temperature is concentrated. Long-wave infrared spectroscopy has a longer penetration distance than other bands under sand and dust conditions, and has the ability to work day and night. It can be used in chemical gas detection, ground object identification, mineral exploration, urban heat island effect monitoring, military camouflage identification and other fields. At present, the main...

AI Technical Summary

Problems solved by technology

The spectrometer based on the block filter method has a simple structure, but the number of spectral channels is limited by the narrow-band filter processing technology

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