Title:
COLOR TEMPERATURE VARIABLE LIGHT EMITTER
Document Type and Number:
WIPO Patent Application WO/2011/007307
Kind Code:
A3
Abstract:
The invention relates to a color temperature variable light emitter and a method, adapted for generating color temperature variable light. The color temperature variable light emitter comprises a first phosphor (1) and a second phosphor (2), the first phosphor (1) and the second phosphor (2), when pumped with pump light, being adapted for emitting first phosphor light and second phosphor light, respectively, the first phosphor light having a different wavelength from the second phosphor light, and an exit surface (11) adapted for emitting the color temperature variable light, wherein the first phosphor (1) and the second phosphor (2) are stacked in a stacking direction in such a way that at least part of the first phosphor light and at least part of the second phosphor light are combined in the exit surface (11) and emitted as the color temperature variable light, and the first phosphor (1) and the second phosphor (2) can be individually pumped by first pump light and second pump light, respectively, the first pump light and the second pump light being incident laterally relative to the stacking direction. In this way, a uniform mixing of light is achieved while preserving a high intensity of the color temperature variable light emitter.
Inventors:
HIKMET RIFAT ATA MUSTAFA (NL)
Application Number:
PCT/IB2010/053171
Publication Date:
March 31, 2011
Filing Date:
July 12, 2010
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
HIKMET RIFAT ATA MUSTAFA (NL)
HIKMET RIFAT ATA MUSTAFA (NL)
International Classes:
H01L25/075; G02B6/00
Foreign References:
| GB2428879A | 2007-02-07 | |||
| US20080122343A1 | 2008-05-29 |
Attorney, Agent or Firm:
BEKKERS, Joost, J., J. et al. (AE Eindhoven, NL)
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