US 9,810,826 B2
Light emitting device
Dmitri Anatolievich Chestakov, Eindhoven (NL); Rifat Ata Mustafa Hikmet, Eindhoven (NL); Stefan Willi Julius Gruhlke, Eindhoven (NL); Ties Van Bommel, Eindhoven (NL); Albert Bijlsma, Eindhoven (NL); Dirk Kornelis Gerhardus De Boer, Eindhoven (NL); Gerardus Everardus Marie Hannen, Eindhoven (NL); and Hendrik Jan Eggink, Eindhoven (NL)
Assigned to PHILIPS LIGHTING HOLDING B.V., Eindhoven (NL)
Appl. No. 15/113,759
Filed by PHILIPS LIGHTING HOLDING B.V., Eindhoven (NL)
PCT Filed Jan. 27, 2015, PCT No. PCT/EP2015/051633
§ 371(c)(1), (2) Date Jul. 22, 2016,
PCT Pub. No. WO2015/113979, PCT Pub. Date Aug. 6, 2015.
Claims priority of application No. 14152898 (EP), filed on Jan. 28, 2014.
Prior Publication US 2016/0377785 A1, Dec. 29, 2016
Int. Cl. F21V 8/00 (2006.01); G02B 19/00 (2006.01); G03B 21/16 (2006.01); H01L 33/50 (2010.01); F21S 8/10 (2006.01); G03B 21/20 (2006.01); H01L 33/60 (2010.01); H01L 33/64 (2010.01)
CPC G02B 6/0003 (2013.01) [F21S 48/115 (2013.01); F21S 48/1145 (2013.01); F21S 48/1241 (2013.01); F21S 48/214 (2013.01); F21S 48/215 (2013.01); F21S 48/2243 (2013.01); G02B 6/005 (2013.01); G02B 6/0031 (2013.01); G02B 6/0046 (2013.01); G02B 6/0085 (2013.01); G02B 19/0019 (2013.01); G02B 19/0066 (2013.01); G03B 21/16 (2013.01); G03B 21/204 (2013.01); G03B 21/208 (2013.01); G03B 21/2013 (2013.01); H01L 33/502 (2013.01); H01L 33/504 (2013.01); H01L 33/505 (2013.01); H01L 33/60 (2013.01); H01L 33/642 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A light emitting device comprising:
at least one light source adapted for, in operation, emitting first light with a first spectral distribution,
a light guide made of a luminescent material and comprising a light input surface and a light exit surface extending in an angle different from zero to one another, and further comprising a first further surface extending parallel to and arranged opposite to the light exit surface, wherein the light guide is adapted for receiving the first light with the first spectral distribution at the light input surface, converting at least a part of the first light with the first spectral distribution to second light with a second spectral distribution, guiding the second light with the second spectral distribution to the light exit surface and coupling the second light with the second spectral distribution out of the light exit surface, and
a phosphor element arranged adjacent to the first further surface and a reflective element arranged adjacent the phosphor element opposite to the first further surface, wherein the phosphor element is adapted for converting light incident from the light guide to third light with a third spectral distribution,
wherein the light guide furthermore is adapted for receiving the third light with the third spectral distribution at the first further surface, guiding the third light with the third spectral distribution to the light exit surface and coupling the third light with the third spectral distribution out of the light exit surface.