Portable optical system integrating rapid imaging of Raman spectroscopy and rapid detection of deep spectroscopy

Abstract

The invention discloses a portable optical path system integrating rapid imaging of Raman spectrum and rapid detection of deep spectrum, which includes: a first beam collimator, a telescopic sleeve, a band-pass filter, a convex lens, an axicon lens, a dichroic Chromatic mirror, second beam collimator, imaging lens, optical fiber bundle, achromatic doublet lens pair and one-dimensional scanning galvanometer, wherein the convex lens and the axicon lens are installed in the telescopic sleeve in a pluggable form, and the two The reflective surface of the dichroic mirror faces the telescopic sleeve, the second beam collimator and the imaging lens are respectively installed at the reflected light and transmitted light outlets of the dichroic mirror, the optical fiber bundle is installed at the other end of the imaging lens, and the collection end and The optical fibers at the detection end are arranged in square and rectangular arrays, the achromatic doublet lens pair is installed at the spectral detection end of the fiber bundle, and the one-dimensional scanning galvanometer is installed at the other end of the lens pair. The invention has the advantages of small size, convenient carrying and moving, and fast imaging and detection speed.

Description

technical field [0001] The invention relates to an optical path system, in particular to a portable optical path system integrating Raman spectrum rapid imaging and deep spectrum rapid detection, and belongs to the field of photoelectric detection technology. Background technique [0002] With the development of laser technology, optical fiber detection devices and photoelectric detection technology, Raman Spectral Imaging (RSI) technology has developed into a method that can qualitatively, quantitatively and The relatively mature technology of positioning description. RSI technology combines the advantages of both spectroscopy and imaging technologies, and can effectively break through the objective impact of the complexity of biological tissue structure on spectral analysis results. It combines a spectrum (characteristic spectrum) with a map (spectral image), high content, High specificity and high accuracy reveal the biochemical composition and tissue structure character...

AI Technical Summary

Problems solved by technology

[0004] (1) Point scanning imaging is usually used, so the imaging speed is relatively slow;

[0005] (2) Due to the use of microscopic optical path, the field of view is relatively narrow;

[0006] (3) Because coherent anti-Stokes Raman spectroscopy (Coherent Anti-strokes Raman Spectroscopy, CRS) and stimulated Raman scattering (Stimulated Raman Spectroscopy, SRS) need to use a pulsed laser light source, so the system structure is more complex and portable poor;

[0007] (4) Due to the short photon scattering and transport length inside the medium, only the near-surface spectral information within a few hundred microns of the tested sample can be detected

Images