Patent · US Active

Lighting device and luminaire

US9651730B2 · kind B2 · utility

3Cited by

0References

6Claims

0Family size

Assignee

PHILIPS LIGHTING HOLDING B.V. · NL

Inventors

Lei Sui · 余新镇, CN
Zhi Quan Chen · Shanghai, CN
Huaizhou Liao · Shanghai, CN
Feng He · Eindhoven, NL

Key dates

Filing date	Mar 12, 2014
Grant date	May 16, 2017
Priority date	—
Expiry date	Mar 12, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21Y2115/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Disclosed is a lighting device comprising an exit window (30); a plurality of solid state lighting elements (20) arranged in an annular pattern; an optical element (10, 50) for redirecting the luminous output of the solid state lighting elements towards said exit window, the shape of said optical element defining a cavity (15) on a central axis of the lighting device, said cavity being shielded from said luminous output; and a driver circuit (40) 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.