Light source unit and projector having such a light source unit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9004701
APP PUB NO 20120316397A1
SERIAL NO

13578834

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A light source unit may include a cooling device; a luminescent substance; an excitation radiation source having a laser source; and an optical element arranged between the radiation source and the substance; wherein the cooling device constitutes a heat sink, wherein the substance is linked thermally to the heat sink; and wherein the optical element is designed as an integrating optical element and is coupled between the radiation source and the substance in such a manner that a part of the radiation emitted by the radiation source, entering in an acceptance angle range of the integrating optical element, is subjected to an internal reflection in the optical element before it exits the optical element and strikes the substance, and that a part of the radiation emitted by the substance enters the optical element and exits the optical element as effective radiation.

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Patent Owner(s)

  • OSRAM GMBH

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berben, Dirk Herdecke, DE 20 217
Bruemmer, Mathias Wusterwitz, DE 5 14
Hartwig, Ulrich Berlin, DE 41 196
Morgenbrod, Nico Berlin, DE 20 112
Morkel, Matthias Berlin, DE 12 28

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