Illumination – Light source and modifier – Including selected wavelength modifier
Patent
1996-11-12
1998-11-10
Cariaso, Alan
Illumination
Light source and modifier
Including selected wavelength modifier
362 19, 362263, 362298, 313112, 313113, 313234, 313584, 313607, F21V 908, F21V 914
Patent
active
058333606
ABSTRACT:
An electrodeless lamp apparatus of high efficiency employs a reflection system that allows the lamp to reabsorb light energy. The energy is redirected back to the light to provide increased system efficiency. The redirected light is of the wrong polarization and/or wrong parts of the color spectrum. The lamp efficiency is increased because of the optical pumping as well as the reuse (after some downshifting) of the returned light. In one embodiment, a projection system provides an image source or projection engine that includes the improved high efficiency lamp of the present invention.
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Knox Richard M.
Mercer William Burton
Walker Dale S.
Cariaso Alan
Compaq Computer Corporation
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