Active and passive dual-mode spectrometer

Abstract

The invention discloses an active and passive dual-mode spectrometer. The spectrometer is composed of an inner part and an outer part of a spectrometer body, a two-in-one optical fiber, an interface,a slit and a main controller are arranged outside the spectrometer body, the machine body comprises an electric table, an active converging lens, a triple prism, an active collimating lens, an activeblazed grating, a passive blazed grating, a grating support, a cylindrical converging lens, a linear variable optical filter, a backside illuminated array detector, an array driving circuit, a passiveconverging lens, a passive collimating lens, an exit slit, a shading screen, a photomultiplier, an electric scanning table, a scanning controller and a working circuit. The spectrometer is advantagedin that ingenious electromechanical switching and grating area light splitting are adopted, so optimization of the internal structure of the spectrometer is realized, and compactness and convenienceof the system are improved; the same spectrometer and the same optical fiber inlet realize composite detection of active and passive spectrums, and detection efficiency is improved; aiming at different active and passive spectral characteristics, different designs are adopted at a sensor end, so targeted spectral detection is realized, and the active spectral resolution and the passive spectral signal-to-noise ratio are improved.

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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