Computational spectral imaging device

Abstract

The invention discloses a computational spectral imaging device comprising a first imaging object lens, a collimating object lens, a semitransparent and semi-reflecting mirror, a dispersion element, a second imaging object lens, a reflecting type spatial light modulator, a third imaging object lens and a detector. The first imaging object lens, the collimating object lens, the semitransparent and semi-reflecting mirror and the dispersion element are arranged in turn in a manner of sharing an optical axis. The second imaging object lens and the reflecting type spatial light modulator are arranged in turn in a dispersion light direction. The third imaging object lens and the detector are arranged in the reflecting light path of the semitransparent and semi-reflecting mirror. All the optical elements are coaxial and equal in height relative to the base of the imaging device. Two-dimensional image information and one-dimensional spectral information including a complete detection scene can be acquired by the computational spectral imaging device in one time, while only one dimension of image information of the detection scene can be acquired by a conventional dispersion imaging spectrometer in one time. Imaging splicing is not required, spatial resolution is not limited by slit width and thus the computational spectral imaging device has the advantage of high spatial resolution.

Description

technical field [0001] The invention belongs to the field of optical imaging, and in particular relates to a computing spectrum imaging device. Background technique [0002] When imaging and detecting the target, the spectral information of the object can reflect the physical and chemical properties of the target, and can effectively eliminate background noise and enhance the visibility of the object. The imaging spectrometer combines the characteristics of the camera and the spectrometer, and can simultaneously obtain the image information of the detection scene and the spectral information of each object point. Imaging spectrometers have broad application prospects and have important application values ​​in the fields of industry, agriculture, military reconnaissance, and atmospheric detection. The mainstream imaging spectrometers mainly include three types: filter type, dispersion type and interference type. Among them, the dispersion type has higher spectral resolution ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a computational spectral imaging device, which solves the technical problem that two-dimensional image information and one-dimensional spectral information cannot be obtained simultaneously in the traditional dispersion spectrum scheme

Images