Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1992-10-15
1994-01-18
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250352, 356246, G01N 2103
Patent
active
052801772
ABSTRACT:
A sample cell for infrared spectrophotometry comprises a sample holder for holding a sample to be analyzed by infrared spectrophotometry, a cool air passageway and a vortex tube. The sample holder includes a primary optical surface through which infrared radiation is directed to a sample contained in the holder, and the cool air passageway is adjacent the primary optical surface of the sample holder for directing a cool air stream across the primary optical surface. The vortex tube has a cool air outlet connected to the cool air passageway for supplying cool air to the passageway.
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patent: 4869077 (1989-09-01), Grange et al.
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patent: 4982089 (1991-01-01), Johnson
I. M. Dubrovkin, A. S. Sobolev and E. N. Sobolev, "Constant-Thickness Cell or an Infrared Spectrometer." Translated from Zavodskaya Laboratoriya, vol. 42, No. 4 (Apr. 1976), p. 428.
Jonathon M. Nash, "Vortex heat exchanger cooling for ir detectors." Applied Optics, vol. 14, No. 12 (Dec. 1975) pp. 2911-2913.
Hannaher Constantine
Kozlowski Holly D.
The United States of America as represented by the Secretary of
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