Infrared radiation source

Details Infrared radiation source Infrared radiation source

1997-12-11

1999-08-17

Westin, Edward P.

Radiant energy

Radiant energy generation and sources

With radiation modifying member

2504931, 2504951, G01J 100

Patent

active

059397268

ABSTRACT:
A pulsable infrared radiation (IR) source which can be used in nondispersive infrared gas analyzers. The pulsable IR source includes a narrow strip of thin metallic foil vertically mounted to the opposite sides of pins of a small transistor type (TO-5) header at the base of a large diameter deep reflector. Infrared radiation from both sides of the heated foil is directly reflected to form a highly efficient source. The foil can be oxidized or otherwise coated under controlled conditions to maximize its emissivity at operating temperatures up to approximately 1200 degrees K. The package is resistance welded with a cap and hermetically sealed window of a suitable material and filter as required to transmit the desired infrared spectrum. An appropriate inert backfill gas prevents further oxidation and enhances the pulsing capability.

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patent: 5438233 (1995-08-01), Boland et al.
patent: 5602398 (1997-02-01), Knodle et al.
patent: 5838016 (1998-11-01), Johnson
patent: 5864144 (1999-01-01), Laine

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