Lamp bulb with integral reflector

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:873528

Levin, Izrail ^[1]; Shanks, Bruce ^[2]; Sumner, Thomas L ^[3]

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1. Silver Spring, MD
2. Gaithersburg, MD
3. Wheaton, MD

An improved electrodeless discharge lamp bulb includes an integral ceramic reflector as a portion of the bulb envelope. The bulb envelope further includes two pieces, a reflector portion or segment is cast quartz ceramic and a light transmissive portion is a clear fused silica. In one embodiment, the cast quartz ceramic segment includes heat sink fins or stubs providing an increased outside surface area to dissipate internal heat. In another embodiment, the quartz ceramic segment includes an outside surface fused to eliminate gas permeation by polishing.

• Research Organization: Fusion Lighting, Inc., Rockville, MD (United States)
• DOE Contract Number: FG01-95EE23796
• Assignee: Fusion Lighting, Inc. (Rockville, MD)
• Patent Number(s): US 6181054
• OSTI ID: 873528
• Country of Publication: United States
• Language: English

Related Subjects

lamp
bulb
integral
reflector
improved
electrodeless
discharge
ceramic
portion
envelope
pieces
segment
cast
quartz
light
transmissive
fused
silica
embodiment
heat
sink
fins
stubs
providing
increased
outside
surface
dissipate
internal
eliminate
gas
permeation
polishing
fused silica
outside surface
discharge lamp
heat sink
light transmissive
ceramic segment
improved electrode
internal heat
bulb envelope
lamp bulb
electrodeless discharge
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