A Spectral Imager Based on Multiple Image Surfaces

Abstract

A spectral imager based on multiple image planes relates to the technical field of spectral imagers, which solves the problems of relatively complex structure, large volume, heavy weight and inability to work in video imaging mode, including sequentially arranged front mirror groups, multi-channel filter First, the front mirror group realizes the function of imaging the target. The multi-channel filter is placed on the N-time image surface of the front mirror group, and the incident beam is divided into monochromatic light of different spectrums. Monochromatic light of different spectral bands is incident on camera 1, camera 1 acquires a hyperspectral image, camera 1 is located on the N+M sub-image plane, N is an integer ≥ 1, and M is an integer ≥ 0. The invention can obtain hyperspectral images in real time, has simple structure, miniaturized volume, low cost, real-time display of high frame frequency area array video imaging, can simultaneously have video and push-broom imaging modes, and has digital TDI integration capability. For area scan video imaging and digital TDI pushbroom imaging.

Description

technical field [0001] The invention relates to the technical field of spectral imagers, in particular to a spectral imager based on multiple image planes. Background technique [0002] Spectral imagers are widely and deeply used in surveying and mapping, crop census, food and drug testing, safety inspection, industrial testing, cultural relic identification, environmental monitoring, natural disaster assessment, mineral exploration, biomedical testing, security monitoring, and military target early warning and identification, etc. fields etc. [0003] At present, spectral imagers often perform remote sensing work in the form of aviation, aerospace and UAV payloads. Their volume and weight are very critical. Especially as aerospace payloads, the incompressible volume and weight greatly increase their launch costs. Therefore, the miniaturization and lightweight research of spectral imager has a very urgent demand. In current spectral imagers, traditional spectral spectrosco...

AI Technical Summary

Problems solved by technology

In current spectral imagers, traditional spectral spectroscopic technologies such as prisms and gratings are often used as spectroscopic devices, and their structures are relatively complex, which has become a bottleneck for miniaturization and lightweight design, and when integrated into imaging spectrometers, the instrument can only work in The push-broom imaging mode cannot work in the video imaging mode, so it is difficult to realize the detection and imaging of dynamic targets

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