Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2004-12-01
2009-06-02
Porta, David P (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
C250S339140, C250S341100, C250S343000, C073S023400
Reexamination Certificate
active
07541587
ABSTRACT:
A gas sensor comprises a cavity for containing a gas, means for generating radiation which is transmitted through the cavity and includes one or more wavelengths which is absorbed in use by a gas to be detected; and a detector for detecting radiation which has passed through the cavity. The walls of the cavity are sufficiently reflective to the radiation that the cavity is substantially uniformally illuminated with the radiation.
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Rogalski, A. et al., “Infrared devices and techniques”, Opto-Electronics Review, vol. 10, No. 2, 2002, pp. 111-136.
Cutler Stuart Christopher
Vass Alexander
City Technology Limited
Green Yara B
Porta David P
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