Patent ID: 6028667
Filing Date: 2000-02-22
Classification: G01J

Abstract:
A spectrograph apparatus for analyzing a sample within a sample cell, wherein the sample cell is illuminated with light having an excitation wavelength, said spectrograph comprising:one or more collection optical fibers configured to be optically connected to the sample cell for receiving scattered light from the sample cell as an optical signal;an optical slit affixed at one end of the optical fibers;a collimating lens configured to receive the optical signal that passes through the slit, wherein the slit is disposed between the collection optical fibers and the collimating lens;a reflective diffraction grating configured to receive the optical signal from the collimating lens and to disperse and reflect the signal;a focusing lens configured to receive and focus the optical signal from the reflective diffraction grating; anda light sensor configured to receive and convert the optical signal into a corresponding electronic signal.