Patent · US Active

Lens and lighting device

US9784430B2 · kind B2 · utility

11Cited by

3References

13Claims

0Family size

Assignee

PHILIPS LIGHTING HOLDING B.V. · NL

Inventors

Mo Shen · Shanghai, CN
Yun-Li Li · Tainan, TW
Aibin Zou · Eindhoven, NL

Key dates

Filing date	Jun 4, 2014
Grant date	Oct 10, 2017
Priority date	—
Expiry date	Jun 4, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG02B3/08
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Disclosed is a lens (100) for a lighting device (10) comprising a solid state lighting element (20), the lens comprising a light exit surface (110); a central lens portion (120) opposite said light exit surface; an inner annular reflective element (130) opposite said light exit surface and extending away from said light exit surface by a first distance (d1), said inner annular reflective element delimiting said central lens portion; and a side surface defined by an outer annular reflective element (140) opposite said light exit surface and extending away from said light exit surface by a second distance (d2) that is larger than the first distance such that the outer annular reflective element extends beyond the inner annular reflective element. A lighting device such as a light bulb including such as lens is also disclosed.

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