Directional sources of electromagnetic radiation

Details Directional sources of electromagnetic radiation Directional sources of electromagnetic radiation

1974-10-03

1977-01-04

Albritton, C. L.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

219216, 219343, 219347, 240103B, 250317, H01J 516, H05B 100

Patent

active

040016226

ABSTRACT:
A convenient reflecting material is a ceramic fiber felt in which the container is partially embedded, the felt being bleached by the radiation from the source to form a pure white reflector conforming to the exterior of the container. The ceramic fiber felt is virtually indestructable, and costs only a few pence. The felt can be made sufficiently thick that the reflector acts as a heat insulator so that heat losses to the back of the reflector are low. The time for the system to warm-up is dependent almost entirely on the source and its enclosing tube, as little heat passes into the reflector.

REFERENCES:
patent: 606792 (1898-07-01), Quidas
patent: 2234987 (1941-03-01), Soller
patent: 2247409 (1941-07-01), Roper
patent: 2839673 (1958-06-01), Wilcoxon
patent: 3005081 (1961-10-01), Kordes et al.
patent: 3436524 (1969-04-01), Pauls
patent: 3475589 (1969-10-01), Bartusek et al.
patent: 3718497 (1973-02-01), Rice
patent: 3805024 (1974-04-01), Joeckel et al.

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