Electric lamp and discharge devices – With temperature modifier – For lead-in-seal or stem protection
Patent
1988-10-11
1990-08-21
Miller, Stanley D.
Electric lamp and discharge devices
With temperature modifier
For lead-in-seal or stem protection
313567, 313634, 313639, 362 32, 362263, 362296, 362347, G02F 1133, H01J 1100, H01J 6130, F21V 704
Patent
active
049500597
ABSTRACT:
A collimated light source is provided which combines the functions of lamp and integrating sphere into one unit for efficiently coupling radiant energy from a gas discharge to a lightguide. The light source is electrodeless and comprises an integrating sphere coated with a light-reflective material and containing a gaseous fill. To excite a discharge current in the fill, the sphere is encircled by a coupling coil driven by an RF power source, or the sphere is enclosed in a microwave cavity. Light exits from the sphere through a light-transmissive window to a lightguide.
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Breedlove Jill M.
Davis Jr. James C.
General Electric Company
Gross Anita Pellman
Miller Stanley D.
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