Optical system of two-channel common-path minimized broadband imaging spectrometer

Abstract

The invention discloses an optical system of a two-channel common-path minimized broadband imaging spectrometer, and relates to the technical field of space optics, solving the problems that an optical system of a conventional broadband imaging spectrometer is complex in structure and large in size and weight. The system comprises a first broadband pass filter, a second broadband pass filter, a first aperture diaphragm, a second aperture diaphragm, a telescope, an incidence slit, a first collimating mirror, a second collimating mirror, a plane grating, an imaging mirror and a detection image surface, wherein a light beam emitted from one same target is split into two channels through the first broadband pass filter and the second broadband pass filter, transmitted to the telescope through the first aperture diaphragm and the second aperture diaphragm, and subsequently imaged to the inclination slit through the telescope; after being emitted through the inclination slit, the light beam is transmitted to different areas of the plane grating through the first collimating mirror and the second collimating mirror, subjected to plane grating dispersion, transmitted to the imaging mirror, and subsequently imaged on one same detector image surface through the imaging mirror. The system is used in the aerospace and aviation atmospheric remote sensing field.

Description

technical field

[0001] The invention relates to the technical field of space optics, in particular to a reflective miniaturized wide-band imaging spectrometer optical system in space optics. Background technique

[0002] Imaging spectrometer is a new type of space optical remote sensing instrument that combines map and spectrum. It is being used more and more widely in the fields of space atmospheric remote sensing, ocean remote sensing, and ground reconnaissance. With the continuous development of space remote sensing applications, the requirements for the optical system of imaging spectrometers are getting higher and higher, and the wave band is getting wider and wider, extending from the visible wave band to the ultraviolet wave band. The wider the wave band, the richer the spectral information of the target contained. It is necessary to realize simultaneous detection of wide-band signals from ultraviolet to visible. In the field of wide-band space atmospheric remote sen...

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