摘要 |
A light source (104) arranged on a substrate (100) and having a light exit surface, a wavelength converter (106) configured to convert light from a first wavelength to a second wavelength, the wavelength converter (106) having a light exit surface (110) and a light entrance surface (114) and an optical coupling element (112), arranged between and in contact with the light exit surface of the light source (104) and the light entrance surface (114) of the wavelength converter (106), and configured to couple light from the light source (104) to the wavelength converter (106), wherein at least a major portion of the surface of the wavelength converter (106), other than the light exit surface (110) and the light entrance surface (114), has a surface roughness, RA, less than 100 nm. |
申请人 |
KONINKLIJKE PHILIPS N.V. |
发明人 |
DE BOER, DIRK KORNELIS GERHARDUS;BRULS, DOMINIQUE MARIA;VAN DUIJNEVELDT, WIDO;NIEUBORG, NANCY;VAN DER TEMPEL, LEENDERT;TIMMERING, CORNELIS EUSTATIUS;VERSCHUUREN, MARCUS ANTONIUS |