Optical analysis device

Details Optical analysis device Optical analysis device

2009-02-13

2010-12-14

Porta, David P (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

Reexamination Certificate

active

07851762

ABSTRACT:
An optical analysis device that operates according to the principle of radiation absorption, has a housing (2) with at least one radiation-permeable housing element (3), at least one radiation source (4) having a reflector (5) associated with it, at least a first detector (6) and a second detector (7) as well as an external reflector (8) located outside the housing (2), wherein an absorption space is formed by the external reflector (8) and the radiation-permeable housing element (3), and a measuring beam (10) emitted by the radiation source (4) and the reflector (5) returns to the housing (2) again after being reflected by the external reflector (8), and wherein the external reflector (8) has at least one recess (12) that does not reflect the measuring beam and behind which a third detector is arranged for receiving the measuring beam.

REFERENCES:
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patent: 6194735 (2001-02-01), Martin
patent: 2003/0106993 (2003-06-01), Chen et al.
patent: 2007/0007449 (2007-01-01), Hubner et al.
patent: 2007/0181812 (2007-08-01), Straub et al.
patent: 196 04 167 (1997-08-01), None
Zhang et al., “A novel CO2 gas anlayzer based on IR absorption,” 2004, Optics and Lasers in Engineering, vol. 42, pp. 219-231.

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