Handheld LIBS spectrometer

摘要

A handheld LIBS spectrometer includes an optics stage movably mounted to a housing and including a laser focusing lens and a detection lens. One or more motors advance and retract the optics stage, move the optics stage left and right, and/or move the optics stage up and down. A laser source in the housing is oriented to direct a laser beam to the laser focusing lens. A spectrometer subsystem in the housing is configured to receive electromagnetic radiation from the detection lens and to provide an output. A controller subsystem is responsive to the output of the spectrometer subsystem and is configured to control the laser source and motors. In this way, auto-calibration, auto-clean, and auto-focus, and/or moving spot functionality is possible.

主权项

1. A handheld LIBS spectrometer comprising:
a housing; an optics stage movably mounted to the housing and including an optics head with:
a laser focusing lens, anda detection lens; one or more motors configured to move the optics head left and right and move the optics head up and down and optionally advance and retract the optics head; a laser source in the housing oriented to direct a laser beam directly to the laser focusing lens in the optics head; a spectrometer subsystem in the housing configured to receive electromagnetic radiation from the detection lens and provide an output; and a controller subsystem responsive to the output of the spectrometer subsystem and configured to control the laser source and said one or more motors to control said one or more motors to initiate a moving spot cycle and, at each location on the sample, to initiate an auto clean routine and perform a purge cycle.