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Jacketed lamp bulb envelope

Patent ·
OSTI ID:874096
 [1];  [2];  [1];  [3];  [4];  [1];  [5];  [2];  [6];  [4];  [1];  [7];  [8];  [9]
  1. Gaithersburg, MD
  2. Damascus, MD
  3. Mt. Airy, MD
  4. Frederick, MD
  5. Great Falls, VA
  6. Silver Spring, MD
  7. Alexandria, VA
  8. Columbia, MD
  9. Olney, MD
+ Show Author Affiliations

A jacketed lamp bulb envelope includes a ceramic cup having an open end and a partially closed end, the partially closed end defining an aperture, a lamp bulb positioned inside the ceramic cup abutting the aperture, and a reflective ceramic material at least partially covering a portion of the bulb not abutting the aperture. The reflective ceramic material may substantially fill an interior volume of the ceramic cup not occupied by the bulb. The ceramic cup may include a structural feature for aiding in alignment of the jacketed lamp bulb envelope in a lamp. The ceramic cup may include an external flange about a periphery thereof. One example of a jacketed lamp bulb envelope includes a ceramic cup having an open end and a closed end, a ceramic washer covering the open end of the ceramic cup, the washer defining an aperture therethrough, a lamp bulb positioned inside the ceramic cup abutting the aperture, and a reflective ceramic material filling an interior volume of the ceramic cup not occupied by the bulb. A method of packing a jacketed lamp bulb envelope of the type comprising a ceramic cup with a lamp bulb disposed therein includes the steps of filling the ceramic cup with a flowable slurry of reflective material, and applying centrifugal force to the cup to pack the reflective material therein.

Research Organization:
FUSION LIGHTING INC
DOE Contract Number:
FC01-97EE23776
Assignee:
Fusion Lighting, Inc. (Rockville, MD)
Patent Number(s):
US 6310443
OSTI ID:
874096
Country of Publication:
United States
Language:
English

References (5)

Electrical and Light Characteristics of RF-Inductive Fluorescent Lamps journal January 1994
Electrodeless lamps for lighting: a review journal January 1993
A simple analysis of an inductive RF discharge journal August 1992
Class-F power amplifiers with maximally flat waveforms journal January 1997
XLI. On the discharge of Electricity through exhausted tubes without electrodes journal October 1891

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Related Subjects

/315/313/
abutting
aiding
alignment
aperture
applying
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centrifugal
centrifugal force
ceramic
ceramic material
closed
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inside
interior
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material
method
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pack
packing
partially
periphery
portion
positioned
positioned inside
reflective
slurry
steps
structural
substantially
therethrough
type
volume
washer