An active and passive dual-mode spectrometer

Abstract

The invention discloses an active and passive dual-mode spectrometer, which is composed of two parts inside and outside a fuselage. Among them, there are two-in-one optical fiber, interface, slit and main controller outside the fuselage; the inside of the fuselage contains electric stage, active converging mirror, prism, active collimating mirror, active blazed grating, passive blazed grating, grating bracket, column Converging lens, linear variable filter, back-illuminated array detector, array drive circuit, passive converging mirror, passive collimating mirror, exit slit, shading screen, photomultiplier tube, motorized scanning table, scanning controller, working circuit. The beneficial effect of the present invention is that, by adopting ingenious electromechanical switching and grating area splitting, the internal structure of the spectrometer can be optimized, and the compactness and convenience of the system can be improved; the same spectrometer and the same optical fiber inlet can realize the composite detection of active and passive spectra, and improve the detection efficiency. Efficiency: According to the different characteristics of active and passive spectra, different designs are adopted at the sensor end to achieve targeted spectral detection, improve active spectral resolution and passive spectral signal-to-noise ratio.

Description

technical field [0001] The invention relates to a dual-mode spectrometer, in particular to a spectrometer system suitable for active and passive dual-mode spectral detection, suitable for material composition analysis based on spectral detection, and belongs to the field of photoelectric detection. Background technique [0002] In the field of deep space exploration, the analysis of planetary surface matter requires unmanned automatic photoelectric detection methods. Compared with other complex material composition detection methods, the photoelectric material composition analysis method based on laser spectroscopy does not require time-consuming reagent addition and pretreatment preparation, can improve the analysis speed, is suitable for real-time analysis, and can multi-element and multi-element Simultaneous analysis of molecules shows great advantages. [0003] In the detection technology of planetary material spectrum, one type belongs to the active spectrum detection ...

AI Technical Summary

Problems solved by technology

[0004] Conventional active-passive combined spectral detection often cannot achieve full multiplexing of optical channels, resulting in high system complexity. Conventional combined systems need to prepare two sets of spectrometers, because conventional spectrometers cannot complete active and passive spectral detection at the same time

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