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:
Jun. 12, 2018
Filed:
Sep. 19, 2014
Philips Lighting Holding B.v., Eindhoven, NL;
Yan Xiong, Eindhoven, NL;
Hongxia Li, Eindhoven, NL;
Zhenning Yao, Eindhoven, NL;
ZhenXuan Lin, Eindhoven, NL;
Bao Wang, Eindhoven, NL;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
In various embodiments, disclosed is a lighting device comprising a bulbous body mounted on a cap, and an inner surface of the bulbous body comprising a plurality of steps that are axially displaced relative to each other along a central axis of the lighting device. The plurality of steps comprising in one example a first step supporting a first plurality of solid state lighting elements; and a second step supporting a second plurality of solid state lighting elements, wherein the first step is located in between the cap and the second step. A luminaire including such a lighting device is also disclosed. The lighting device may further comprise a bulbous member separated from the cap by a transparent member having a stepped wall profile including the first step and the second step.