Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1985-06-20
1988-01-12
Willis, Davis L.
Optics: measuring and testing
By particle light scattering
With photocell detection
356352, G01B 902
Patent
active
047187654
ABSTRACT:
Selective modulation interferometric detector, intended for specifically detecting and/or identifying at least one gas in a gaseous mixture, especially with the aim of carrying out analysis and/or proportioning operations, the assembly E consists of a first strip L.sub.1 of interferometric quality having plane and parallel faces, of thickness e and index n introducing a displacement .DELTA.=2ne adapted to the gas to be analyzed, this strip L.sub.1 supplying on the detector a brilliant fringe, and a second strip L.sub.2 made of the same material as the first strip L.sub.1 which is slightly prismatic and supplying on the detector average illumination.
Fortunato Gerard
Galais Andre
Laurent Dominique
ELF France
Koren Matthew W.
Willis Davis L.
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