Optical gas sensor

Details Optical gas sensor Optical gas sensor

1990-03-16

1991-07-09

McGraw, Vincent P.

Optics: measuring and testing

By shade or color

With color transmitting filter

422 55, 422 83, 250361C, 2504581, G01N 2125

Patent

active

050300091

ABSTRACT:
An optical gas sensor comprises a light emitting element; a photo detecting element; a gas sensing element including a thin film containing an organic pigment, the gas sensing element responding to light emitted from the light emitting element to emit fluorescence or phosphorescence; and a filter for selectively picking up fluoroescence or phosphorescence, the gas sensing element and the filter being disposed in an optical path ranging from the light emitting element to the photo detecting element.

REFERENCES:
patent: Re31879 (1985-05-01), Lubbers et al.
patent: 4857472 (1989-08-01), Wolfbeis
patent: 4906100 (1990-03-01), Rice et al.
Patent Abstracts of Japan P-980, Dec. 21, 1989, vol. 13/No. 580, p. 70.

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