A LIGHT EMITTING DEVICE AND A METHOD FOR DIMMING A LIGHT EMITTING DEVICE

WIPO Patent Application WO/2015/007755

A3

A light emitting device, comprising at least two light sources (21, 22, 23, 24) adapted for, in operation, emitting light with a first spectral distribution, a first light guide (4) comprising a first light input surface (41), which is arranged parallel to the main waveguiding direction of the first light guide (4),and a first light exit surface (42)extending in an angle different from zero in relation to the first light input surface (41), the first light guide being adapted for receiving the light with the first spectral distribution at the first light input surface, converting at least a part of the light with the first spectral distribution to light (14) with a second spectral distribution, guiding the light (14) with the second spectral distribution to the first light exit surface (42) and coupling the light (14) with the second spectral distribution out of the first light exit surface (42), the at least two light sources (21, 22, 23, 24) being arranged at mutually different distances from the first light exit surface (42) of the first light guide (4), and a control device (90) adapted for dimming the light emitting device starting with the light source of the at least two light sources (21, 22, 23, 24) which is arranged at a largest distance from the first light exit surface (42) of the first light guide (4).

VAN BOMMEL TIES (NL)
HIKMET RIFAT ATA MUSTAFA (NL)

PCT/EP2014/065194

March 19, 2015

July 16, 2014

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KONINKL PHILIPS NV (NL)

F21K99/00; H05B44/00

WO2011100710A1

2011-08-18

US20120212931A1	2012-08-23
US20110175549A1	2011-07-21
US20130003346A1	2013-01-03
US20110286200A1	2011-11-24

KETTING, Alfred et al. (P.O. Box 220, AE Eindhoven, NL)

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