Device for optically detecting a chemical change in fluid

Details Device for optically detecting a chemical change in fluid Device for optically detecting a chemical change in fluid

1991-08-19

1993-06-08

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250226, 25022723, 356412, G01J 350, G01N 1506

Patent

active

052182126

ABSTRACT:
A device for optically detecting a chemical change of fluid comprises a prism placed in fluid to be tested and a layer of color indication material formed on a surface of the prism to thereby detect a chemical change of fluid by means of a transmitted light and a reflected light in the prism.

REFERENCES:
patent: 3998591 (1976-12-01), Eckfeldt
patent: 4136566 (1979-01-01), Christensen
patent: 4200110 (1980-04-01), Peterson et al.
patent: 4471186 (1984-09-01), Yoshioka
patent: 4560248 (1985-12-01), Cramp et al.
patent: 4572447 (1988-06-01), Kimmel et al.
patent: 4661320 (1987-04-01), Ito et al.
patent: 4851665 (1989-07-01), Pesquento et al.
patent: 4863694 (1989-09-01), Kimmel et al.
Oriel Corporation, Optics & Filters vol. III, p. 10-2, 1990.

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