Method for automatically calibrating a Raman spectrum detection system and Raman spectrum detection system

摘要

A Raman spectrum detection system including a light source for emitting excitation light that excites a detected object to emit Raman light; an external light path system for irradiating light emitted from the light source on the detected object and collecting the Raman light emitted by the detected object; a light detection device for receiving the Raman light collected by the external light path system and detecting the Raman light to obtain spectrum data thereof; a control device for controlling the excitation light source to provide the excitation light, controlling the light detection device to detect the Raman light, receiving the spectrum data output from the light detection device, and analyzing said spectrum data to identify the detected object; and an automatic calibration device for holding the standard sample and for automatically calibrating the system.

主权项

1. A Raman spectrum detection system, comprising:
a light source for emitting excitation light that excites the detected object to emit Raman light; an external light path system for irradiating light emitted from the light source on a detected object and collecting the Raman light emitted by the detected object; a light detection device for receiving the Raman light collected by the external light path system and detecting said Raman light to obtain spectrum data thereof; a control device for controlling the excitation light source to provide the excitation light, controlling the light detection device to detect the Raman light, receiving the spectrum data output from the light detection device, and analyzing said spectrum data to identify the detected object; and an automatic calibration device for automatically calibrating the Raman spectrum detection system, wherein the automatic calibration device comprises a standard sample, and the automatic calibration device is arranged at the light exit of the external light path system such that the automatic calibration device receives light from the external light path system and the external light path system collects the Raman light from the standard sample, wherein the external light path system comprises:
a reflector which reflects the excitation light from the light source;a filter which reflects the excitation light reflected by the reflector and allows transmission of the Raman light having a wavelength longer than that of said excitation light;a collecting lens which focuses the excitation light from the filter onto the detected object and collects the Raman light emitted by the detected object; anda converging lens, which focuses the Raman light collected by the collecting lens onto the light detection device, and wherein the location and angle of the reflector vary with the angle of the excitation light emitted from the light source to reflect the excitation light emitted by the light source to the filter.