Circular polarization hyperspectral image detection system

Abstract

The invention relates to a hyperspectral image detection system capable of simultaneously acquiring left-hand and right-hand circular polarization components of a target. The system includes a pre-positioned collimation system, a double-refraction beam splitting system, an imaging lens and an image acquisition and processing system that are sequentially arranged in the direction of incoming rays. According to the invention, a double-channel circular polarization detection system is adopted to simultaneously acquire an interference figure of the left-hand and right-hand circular polarization components of a target, the detection system improves the capability of acquiring a difference circular polarization spectral image as compared with the single-channel polarization imaging spectrometer only capable of detecting a single linear polarization component, avoids quiver noise as compared with the sequence acquisition technology adopting a rotary component, can be used for acquiring the circular polarization spectral image of the target within a wide band range from the ultraviolet band to the infrared band, and has potential application values in the fields of space exploration, earth remote sensing, machine vision, biomedical diagnosis and the like.

Description

【Technical field】

[0001] The invention belongs to the technical field of optical image processing instruments, and relates to a Fourier transform imaging spectrometer used in the field of imaging spectrum, in particular to a circular polarization hyperspectral imaging detection system. 【Background technique】

[0002] The light emitted by the target not only has spectral characteristics, but also has certain polarization properties. If the spectral and polarization information of the target can be described quantitatively, it can provide a powerful tool for target identification and evaluation. Currently, two important remote sensing technologies that can obtain polarization and spectral information are polarimetry and spectroscopy, and their combination can detect targets with multiple information. Circularly polarized light is a kind of polarized light. Both natural and artificial objects will reflect or radiate circularly polarized light, especially metal surfaces or scatt...

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