Optics: measuring and testing – By shade or color
Patent
1977-07-19
1980-08-05
Corbin, John K.
Optics: measuring and testing
By shade or color
356 41, 356417, G01J 346
Patent
active
042159407
ABSTRACT:
Monochromatic excitation light is passed into an indicator chamber to exc the indicator therein. The side of the indicator chamber in contact with the substance to be analyzed is closed off by a membrane which is permeable to the component of that substance whose concentration is to be determined. The side through which the radiation emitted from the indicator towards the light-measuring unit of the apparatus passes is transmissive for the emitted radiation. The direction of introduction of monochromatic excitation radiation, and the direction in which the radiation emitted from the indicator towards the light-measuring unit, include an angle relative to each other, and are preferably perpendicular. As a result, any spectral reactivity of the substance to be analyzed to the excitation radiation does not have an affect upon the light-measuring unit of the apparatus, and the latter receives light exclusively dependent upon the spectral alteration of the indicator in response to the concentration of the component whose concentration is to be ascertained.
REFERENCES:
patent: 4003707 (1977-10-01), Lubbers et al.
patent: 4022529 (1977-05-01), White
Lubbers Dietrich W.
Opitz Norbert
Corbin John K.
de los Reyes B.W.
Max Planck Gesellschaft zur Forderung der Wissenschaften e.V.
Striker Michael J.
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