The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 2013
Filed:
Mar. 30, 2009
Petrus Adrianus Josephus Holten, Eindhoven, NL;
Vincent Fabriek, Eindhoven, NL;
Giorgia Tordini, Eindhoven, NL;
Rene Theodorus Wegh, Eindhoven, NL;
Bart-hendrik Huisman, Eindhoven, NL;
Petrus Adrianus Josephus Holten, Eindhoven, NL;
Vincent Fabriek, Eindhoven, NL;
Giorgia Tordini, Eindhoven, NL;
Rene Theodorus Wegh, Eindhoven, NL;
Bart-hendrik Huisman, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A light-emitting device comprises a light source adapted to emit light of a first wavelength range; a reflective body comprising a reflective layer; a wavelength converting layer comprising a wavelength converting material adapted to absorb light of said first wavelength range and to emit light of a second wavelength range, said wavelength converting layer and said light source being arranged mutually spaced apart; and light-scattering elements adapted to scatter light of at least said first wavelength range; wherein at least part of said light-scattering elements are arranged in the path of light from said light source to said wavelength converting layer. The light-emitting device according to the invention provides improved uniformity in color and also improved brightness uniformity.