DLP technology and compressive sensing theory-based ultra-sensitive spectrum detection method and system

Abstract

The invention relates to a DLP technology and compressive sensing theory-based ultra-sensitive spectrum detection method and system. According to the detection method, with DLP light splitting technologies and a compressive sensing theory adopted as a core; a single-point detector is adopted, and the DLP light splitting technologies are used in combination, the ultra-sensitive spectrum detection can be realized through adopting the compressive sensing theory. The ultra-sensitive spectrum detection system includes an optical filter / optical filtering system 1, a lens 2, a slit 3, a collimating / focusing mirror 4, an optical grating 5, a DMD device 6, a single-point detector 7 and electric control system and software 8. The sensitivity of the ultra-sensitive spectrum detection system can be significantly increased, and the cost of the ultra-sensitive spectrum detection system can be decreased manyfold. The system can be widely applied to spectrograph systems using optical grating light splitting, such as Raman spectrographs, infrared spectrographs, fluorescence spectrographs and SPR spectrographs.

Description

technical field [0001] The invention relates to an ultra-sensitive spectral detection method and system based on DLP technology and compressed sensing theory, in particular to a small-scale spectrometer system and imaging system with high requirements on sensitivity, size and cost, and can be widely used in spectrometer systems using grating spectrometry , such as Raman spectrometer, infrared spectrometer, fluorescence spectrometer, SPR spectrometer, etc. Background technique [0002] The spectrometer is the most widely used analytical instrument. According to its different spectroscopic principles, it can be divided into filter type, grating type, Fourier transform type, and acousto-optic adjustable type. Among them, the grating dispersion spectrometer has the widest coverage. Most spectrometer types. [0003] Grating-type spectrometers cover almost all types of spectrometer systems. There are mainly two types of optical path structures: grating scanning type and fixed opt...

AI Technical Summary

Problems solved by technology

Both of these two patents are based on DLP technology and compressed sensing theory, and realize the high-sensitivity spectral dimensionality reduction acquisition function, but the modulation of the optical path is performed before the splitting slit, that is, the original spectrum collected is compressed, and there is no An improvement scheme is proposed for the split optical path, which is not suitable for small spectrometer systems with high measurement requirements

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