Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1997-08-11
2000-08-22
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
356246, G01J 318, G01N 2105
Patent
active
061080837
ABSTRACT:
A spectroscopic system for the analysis of small quantities of substances makes use for the purposes of energy transfer of cone-shaped aperture changers which are arranged in the object zone between the light source and the sample and, during absorption measurements, also between the sample and the inlet slot of a spectrometer. A microcell system is provided in the object space. The microcell system comprises a cylindrical cell tube with a hollow core for receiving a sample liquid. The cell tube and the sample liquid being adjustable with respect to the refractive index such that they act as a step waveguide for radiation, the sample liquid forming the core and the wall of the cell tube forming the sheath of the step waveguide.
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Evans F. L.
Hewlett--Packard Company
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