Illumination Device Comprising A Phosphor Arrangement And A Laser

a technology of illumination device and laser, which is applied in the direction of lighting and heating apparatus, light source combination, instruments, etc., can solve the problems of reducing the conversion efficiency of red phosphors compared with yellow and green phosphors, and imposing limits on the luminous flux and luminances that can be achieved with larp technology, so as to achieve improved luminous flux and high luminance
US20150167907A1Inactive Publication Date: 2015-06-18OSRAM GMBH
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
OSRAM GMBH
Publication Date
2015-06-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

A lighting device comprising a phosphor arrangement (2) having a phosphor region; (31-33), a first laser (5) for irradiating a part of the phosphor region (31-33) with a first laser radiation; wherein the phosphor region (31-33) comprises at least one phosphor which can be irradiated by the first laser radiation and re-emits said first laser radiation at least partly in a manner wavelength-converted into colored light having a first light color; a second laser (6) configured for emitting a second laser radiation having a second light color, wherein the second light color of the second laser radiation is identical in color to the first light color of the wavelength-converted colored light; and wherein the lighting device is configured to simultaneously emit the second laser radiation and the wavelength-converted colored light of identical color emitted by the phosphor.
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Description

TECHNICAL FIELD

[0001] The invention relates to a lighting device comprising at least one laser and a phosphor arrangement that is irradiated by the laser radiation of the at least one laser. Furthermore, the invention relates to a method for operating said lighting device.

[0002] The invention is applicable in particular to projection devices, for example for film and video projecting gear in industrial and medical image recognition, in technical and medical endoscopy, for lighting effects in the entertainment industry, for medical irradiations and in the automotive sector, in particular for headlights for motor vehicles.PRIOR ART

[0003] Light sources having a high luminous flux and a high luminance are employed in a wide variety of fields, for instance in endoscopy and likewise in projection apparatuses, wherein gas discharge lamps are currently the most widely used for this purpose. In lighting applications, for example projection or endoscopy, on the basis of LARP (“Laser Activated Re...

Claims

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