Patent · US Active

Illumination device

US8480252B2 · kind B2 · utility

29Cited by

4References

16Claims

0Family size

Assignee

OSRAM Gesellschaft mit beschraenkter Haftung · DE

Inventors

Ralph Bertram · Herzogenrath, DE
Simon Schwalenberg · Regensburg, DE
Benjamin Jobst · Nittenau, DE

Key dates

Filing date	Jul 7, 2009
Grant date	Jul 9, 2013
Priority date	—
Expiry date	Mar 15, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21Y2115/15
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An illumination device may include a hollow body having at least one light emission opening, wherein the hollow body has at least partly a reflective surface at its inner side, and at least one semiconductor luminous element, wherein a predominant portion of the light emitted by the semiconductor luminous element is incident on the inner side of the hollow body and is reflected from there through the light emission opening. The device may furthermore include a covering for the light emission opening with a grid-type arrangement of light transmission openings, wherein the at least one semiconductor luminous element is fixed to the covering and is directed at the inner side of the hollow body, and wherein a side area of the covering that surrounds the light transmission openings is at least partly reflectively coated.

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