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Title: Aperture lamp

Abstract

A discharge lamp includes means for containing a light emitting fill, the fill being capable of absorbing light at one wavelength and re-emitting the light at a different wavelength, the light emitted from the fill having a first spectral power distribution in the absence of reflection of light back into the fill; means for exciting the fill to cause the fill to emit light; and means for reflecting some of the light emitted by the fill back into the fill while allowing some light to exit, the exiting light having a second spectral power distribution with proportionately more light in the visible region as compared to the first spectral power distribution, wherein the light re-emitted by the fill is shifted in wavelength with respect to the absorbed light and the magnitude of the shift is in relation to an effective optical path length. Another discharge lamp includes an envelope; a fill which emits light when excited disposed in the envelope; a source of excitation power coupled to the fill to excite the fill and cause the fill to emit light; and a reflective ceramic structure disposed around the envelope and defining an light emitting opening, wherein the structure comprises amore » sintered body built up directly on the envelope and made from a combination of alumina and silica.« less

Inventors:
 [1];  [2]
  1. (Gaithersburg, MD)
  2. (Damascus, MD)
Issue Date:
Research Org.:
Fusion Lighting, Inc., Rockville, MD (United States)
OSTI Identifier:
875000
Patent Number(s):
6509675
Assignee:
Fusion Lighting, Inc. (Rockville, MD) HQPR
DOE Contract Number:  
FG01-95EE23796
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
aperture; lamp; discharge; means; containing; light; emitting; fill; capable; absorbing; wavelength; re-emitting; emitted; spectral; power; distribution; absence; reflection; exciting; emit; reflecting; allowing; exit; exiting; proportionately; visible; region; compared; re-emitted; shifted; absorbed; magnitude; shift; relation; effective; optical; path; length; envelope; emits; excited; disposed; source; excitation; coupled; excite; reflective; ceramic; structure; defining; sintered; built; directly; combination; alumina; silica; optical path; structure disposed; absorbing light; /313/315/

Citation Formats

MacLennan, Donald A., and Turner, Brian P. Aperture lamp. United States: N. p., 2003. Web.
MacLennan, Donald A., & Turner, Brian P. Aperture lamp. United States.
MacLennan, Donald A., and Turner, Brian P. Wed . "Aperture lamp". United States. https://www.osti.gov/servlets/purl/875000.
@article{osti_875000,
title = {Aperture lamp},
author = {MacLennan, Donald A. and Turner, Brian P.},
abstractNote = {A discharge lamp includes means for containing a light emitting fill, the fill being capable of absorbing light at one wavelength and re-emitting the light at a different wavelength, the light emitted from the fill having a first spectral power distribution in the absence of reflection of light back into the fill; means for exciting the fill to cause the fill to emit light; and means for reflecting some of the light emitted by the fill back into the fill while allowing some light to exit, the exiting light having a second spectral power distribution with proportionately more light in the visible region as compared to the first spectral power distribution, wherein the light re-emitted by the fill is shifted in wavelength with respect to the absorbed light and the magnitude of the shift is in relation to an effective optical path length. Another discharge lamp includes an envelope; a fill which emits light when excited disposed in the envelope; a source of excitation power coupled to the fill to excite the fill and cause the fill to emit light; and a reflective ceramic structure disposed around the envelope and defining an light emitting opening, wherein the structure comprises a sintered body built up directly on the envelope and made from a combination of alumina and silica.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {1}
}

Patent:

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