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1. (WO2013153511) A LIGHT CONVERSION ASSEMBLY, A LAMP AND A LUMINAIRE

Pub. No.:    WO/2013/153511    International Application No.:    PCT/IB2013/052820
Publication Date: Fri Oct 18 01:59:59 CEST 2013 International Filing Date: Wed Apr 10 01:59:59 CEST 2013
IPC: H01L 33/50
H01J 61/44
Applicants: KONINKLIJKE PHILIPS N.V.
Inventors: HIKMET, Rifat, Ata, Mustafa
VAN BOMMEL, Ties
Title: A LIGHT CONVERSION ASSEMBLY, A LAMP AND A LUMINAIRE
Abstract:
A light conversion assembly 100, a lamp and a luminaire is provided. The light conversion assembly 100 comprises a first layer 108 and a second layer 106. The first layer 108 comprises first luminescent material. The first luminescent material comprises particles showing quantum confinement and have at least in one dimension a size in the nanometer range. The first layer is arranged to receive light 110 from a light source emitting light of a first spectral distribution in a violet or blue spectral range. The first spectral distribution has a first peak wavelength. The first layer 108 is configured to convert substantially all the received light 110 towards light 104 of a second spectral distribution in the blue spectral range, independently of the position of first spectral distribution in the violet or blue spectral range. The second spectral distribution has a second peak wavelength which is a longer wavelength than the first peak wavelength. The second layer 106 comprises a second luminescent material. The second layer is arranged to receive light 104of the second spectral distribution and is configured to at least partially convert the received light 104 towards light 102 of a third spectral distribution being different from the first spectral distribution and the second spectral distribution.