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:
Feb. 20, 2018
Filed:
Jul. 02, 2012
Rifat Ata Mustafa Hikmet, Eindhoven, NL;
Johan Lub, Valkenswaard, NL;
Rene Theodorus Wegh, Veldhoven, NL;
Paulus Alberts Van Hal, Waalre, NL;
Jan Cornelis Kriege, Mierlo, NL;
Rifat Ata Mustafa Hikmet, Eindhoven, NL;
Johan Lub, Valkenswaard, NL;
Rene Theodorus Wegh, Veldhoven, NL;
Paulus Alberts Van Hal, Waalre, NL;
Jan Cornelis Kriege, Mierlo, NL;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
A wavelength converting element () comprising a polymeric carrier material comprising a first wavelength converting material adapted to convert light of a first wavelength to light of a second wavelength, wherein the oxygen diffusion coefficient (D) of the polymeric carrier material is 8×10cm/s or less at 25° C. A prolonged lifetime of the wavelength converting material is achieved by selecting a polymeric carrier material with an oxygen diffusion coefficient (D) at 8×10cm/s or less at 25° C.