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

An imaging spectrometer and optical system technology, applied in the field of space optics, can solve the problems of large volume and weight, complex structure of broadband imaging spectrometer, etc., and achieve the effect of compact layout

Active Publication Date: 2013-02-13
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] In order to solve the problems of complex structure, large volume and heavy weight of the existing broadband imaging spectrome...

Method used

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

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specific Embodiment approach 1

[0009] Specific implementation mode 1. Combination figure 1 Describe this embodiment, the optical system of a miniaturized broadband imaging spectrometer with two channels and a common optical path, the optical system includes a first broadband filter 1, a second broadband filter 2, a first aperture stop 3, and a second aperture stop 4. Telescope 5, incident slit 6, first collimating mirror 7, second collimating mirror 8, plane grating 9, imaging mirror 10 and detector image plane 11, the light beam that described same target exits is filtered through the first broadband The light sheet 1 and the second broadband filter 2 are divided into two channels and are respectively incident on the same telescope 5 through the first aperture stop 3 and the first aperture stop 4, and are imaged on the entrance slit 6 through the telescope 5, from the incident After the slit 6 exits, it is incident on two different regions of the same plane grating 9 after passing through the first collima...

specific Embodiment approach 2

[0013] Specific embodiment two, combine figure 1 This embodiment is described. This embodiment is the application of the dual-channel common optical path miniaturized broadband imaging spectrometer optical system described in Embodiment 1. The system described in Embodiment 1 is applied to space remote sensing atmospheric limb imaging spectrum detection. The optical system of the imaging spectrometer described in this embodiment has a focal length of 68.8 mm, a field of view of 2.4°×0.02°, and a working wavelength range of 280-1000 nm. Atmospheric limb scene is divided into two channels by the first broadband filter 1 and the second broadband filter 2 to be incident on the telescope 5. The wavelength range of the first channel is 280-540nm, and the wavelength range of the second channel is 535-535nm. 1000nm, the aperture of the first aperture stop 3 is 8.8mm, and the aperture of the second aperture stop 4 is 4.6mm, achieving the purpose of enhancing weak signals. Telescope 5 ...

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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...

Claims

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Application Information

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IPC IPC(8): G01J3/02
Inventor 薛庆生王淑荣
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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