Low power infrared source assembly for spectrometer

Details Low power infrared source assembly for spectrometer Low power infrared source assembly for spectrometer

1988-10-11

1990-06-19

Berman, Jack I.

Radiant energy

Radiant energy generation and sources

With radiation modifying member

2504931, 219492, 219553, H01K 102

Patent

active

049356330

ABSTRACT:
An infrared source that operates at about 1150.degree. C. without the need for water cooling. The source is configured with a small surface area radiating element, energized by a high frequency AC square wave. The frequency of the AC square wave is much greater than the inverse of the filament's thermal time constant so that the temperature is very stable. The radiating element is mounted relative to a concave reflector so that the infrared radiation forms a beam suitable for input to a spectrometer. In a first embodiment, the radiating element is in the form of a wire coil, while in a second embodiment, it is in the form of a cylinder having a central portion of reduced diameter.

REFERENCES:
patent: 1797205 (1931-03-01), Houck
patent: 3100828 (1963-08-01), Jacobs et al.
patent: 3394259 (1968-07-01), Brown
patent: 3949231 (1976-04-01), Blunck et al.

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