Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1989-04-27
1990-08-21
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
G01J 342, G01J 318
Patent
active
049500775
ABSTRACT:
A photoelectric measuring apparatus for use in an automatic chemical analyzer in which a plurality of test items are analyzed by using light beams having different wavelengths, including a white light source for emitting a polychromatic light beam, a grating for diffracting the polychromatic light beam into a plurality of light beams having predetermined different wavelengths, a plurality of light guides for guiding the light beams emanating from the grating to a plurality of cuvettes containing test liquids to be analyzed, a plurality of light receiving elements for receiving light beams transmitted through the cuvettes, an additional light guide for guiding a polychromatic light beam emanating from the grating as the zero order light beam to a cuvette via an optical filter having a desired transmission wavelength, and an additional light receiving element for receiving a light beam transmitted through the cuvette.
REFERENCES:
patent: 3880523 (1975-04-01), Thomas
patent: 4571074 (1986-02-01), Thevenon
patent: 4685801 (1987-08-01), Minekane
patent: 4781456 (1988-11-01), Nogami
Lagutin, "A Multichannel Scanning Spectrophotometer", Bull. Crimean Astrophys. Obs. (U.S.A.), vol. 60, 1979, pp. 149-153.
Evans F. L.
Olympus Optical Co,. Ltd.
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