Vision field division interference imaging spectrometer and imaging method

Abstract

The invention provides a vision field division interference imaging spectrometer, which comprises a telescope objective, a vision field division prism, a first interferometer, a second interferometer, a first collimating lens, a second collimating lens, a first Fourier transform lens and a second Fourier transform lens, wherein the vision field division prism is a closed-angle reflecting prism, and is arranged on an image surface of the telescope objective; a vertex of the vision field division prism is positioned on an optical axis of the telescope objective; light rays from the telescope objective is reflected into two paths of reflected light rays by two reflecting surfaces of the vision field division prism, and the two paths of reflected light rays enter the first interferometer and second interferometer through the first collimating lens and the second collimating lens; and the first Fourier transform lens and the second Fourier transform lens are respectively arranged in light paths of emergent light of the first interferometer and second interferometer. The two vision fields formed by the vision field division interference imaging spectrometer are respectively used in different spectral ranges, the vision field utilization rate of the optical system is high, and the signal-to-noise ratio of the system is high.

Description

technical field [0001] The invention relates to a spectrometer, in particular to a field-of-view division interference imaging spectrometer and an imaging method thereof which can be applied in a space-time joint modulation interference imaging spectrometer. Background technique [0002] The optical system of the space-time joint modulation interference imaging spectroscopy technology consists of an interferometer and a Fourier transform lens. In order to reduce the volume and weight of the interferometer, a high-resolution spatio-temporal joint modulation interference imaging spectrometer is added in front of the interferometer with a telescopic system with a compressed aperture (composed of a telescopic objective lens and a collimating lens), such as figure 1 shown. The field of view of space-time joint modulation interference imaging spectroscopy technology is generally a rectangular field of view, which is divided into spectral direction and spatial direction. The lengt...

AI Technical Summary

Problems solved by technology

[0003] Large and wide interferometric imaging spectrometers are limited by the area array of detectors and require detector splicing, such as figure 2 As shown, due to the existence of the detector mechanical frame, seamless splicing cannot be directly performed

The traditional method of splitting and splicing by prisms divides the light energy into two and connects the subsequent detectors respectively, which reduces the light energy entering each detector, thereby reducing the signal-to-noise ratio of the interference imaging spectrometer

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