Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1996-02-23
1998-03-24
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250345, 250351, G01J 2135
Patent
active
057315833
ABSTRACT:
The disclosed gas analyzer (10) provides two separate folded optical paths (16 and 18) from a single source (12) to a single detector array (14) via a polychromatic filter (26). One optical path (16) passes through a sample gas chamber (24) containing a gas to be analyzed and the other path (18) passes through a reference chamber (30) containing a reference gas. On each optical path (16 or 18), radiation from the source (12) is collected by upstream optics (22 or 28) to form a converging beam (16b, c or 18b, c), thereby reducing or eliminating the need for collection optics at the detector array (14).
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Bailey William D.
Patton Craig A.
Hannaher Constantine
Marsh Thomas R.
Ohmeda Inc.
Rathbun Roger M.
Schoneman William A.
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