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:
May. 16, 2017
Filed:
Mar. 12, 2014
Philips Lighting Holding B.v., Eindhoven, NL;
Lei Sui, Shanghai, CN;
Zhi Quan Chen, Shanghai, CN;
Huaizhou Liao, Shanghai, CN;
Feng He, Shanghai, CN;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
Disclosed is a lighting device comprising an exit window (); a plurality of solid state lighting elements () arranged in an annular pattern; an optical element () for redirecting the luminous output of the solid state lighting elements towards said exit window, the shape of said optical element defining a cavity () on a central axis of the lighting device, said cavity being shielded from said luminous output; and a driver circuit () for driving at least some of said solid state lighting elements located in said cavity. A luminaire including such a lighting device is also disclosed.