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. 17, 2017
Filed:
Mar. 01, 2016
Koninklijke Philips N.v., Eindhoven, NL;
Hugo Johan Cornelissen, Escharen, NL;
Giovanni Cennini, Eindhoven, NL;
Hendrikus Hubertus Petrus Gommans, Eindhoven, NL;
Marcellinus Petrus Carolus Michael Krijn, Eindhoven, NL;
Martinus Hermanus Wilhelmus Maria Van Delden, Venlo, NL;
Leon Wilhelmus Godefridus Stofmeel, Eindhoven, NL;
Jianghong Yu, Best, NL;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
A light output device and manufacturing method in which an array of LEDs is embedded in an encapsulation layer. An array of cavities (or regions of different refractive index) is formed in the encapsulation layer. The cavities/regions have a density or size that is dependent on their proximity to the light emitting diode locations, in order to reduce hot spots (local high light intensity areas) and thereby render the light output more uniform over the area of the device.