Dual-channel high-throughput interference imaging spectroscopy device and method

Abstract

The invention provides a dual-channel high-throughput interference imaging spectroscopy device and method. The device includes a pre-optical system, a dual-channel transverse shear beam splitting system, a first imaging system, and a second imaging system; the incident light passes through the pre-optical The system determines the target field of view, eliminates stray light and forms a collimated beam, enters the dual-channel transverse shearing beam splitting system, exits through two optical channels, and the outgoing light of each channel is transversely sheared to introduce optical path difference information Obtain the target image with interference fringes on the detector target surface at the rear focal plane of the imaging objective lens of the two imaging systems, extract the interference information, perform Fourier transform on it, restore the target image, and obtain the spectral information of each point of the target And the two-dimensional image information of each spectral band. The invention has the characteristics of high luminous flux and dual-channel imaging; by using the transverse shearing interference principle of the dual-channel light beams, it can realize double-view field splicing for large-format imaging, and can also realize dual-channel imaging of visible light and infrared.

Description

technical field [0001] The invention belongs to the field of optical imaging, and specifically relates to a dual-channel high-throughput interference imaging spectrum device and method. Using the principle of transverse shearing interference of dual-channel light beams, it can realize double-view field splicing for large-format imaging, and can also realize visible light and Infrared dual-channel imaging. Background technique [0002] Light is the carrier of information. The imager can intuitively obtain the appearance information of the target through the collected optical images, that is, spatial information; the spectrometer can obtain the structural characteristics of the target according to the spectral characteristics, and the imaging spectrometer is an organic combination of the two functions. We put An optical sensor that can simultaneously obtain image information and spectral information of a pixel is called an imaging spectrometer. The essence of imaging spectrosc...

AI Technical Summary

Problems solved by technology

The Sagnac beam splitter adopts a common optical path structure, which is convenient for system installation and adjustment, and has strong anti-noise ability, but it is large in size, which is not conducive to the miniaturization of the system

A beam splitter that uses birefringent crystals to realize transverse shearing can realize the miniaturization of the shearing system, but limited by the birefringent crystal material, the system is limited in infrared band detection

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