Patent · US Active

Luminaire and traffic route illumination device

US8840270B2 · kind B2 · utility

1Cited by

6References

12Claims

0Family size

Assignee

OSRAM GmbH · DE

Inventors

Simon Schwalenberg · Regensburg, DE
Peter Brick · Regensburg, DE
Julius Muschaweck · Gauting, DE

Key dates

Filing date	Nov 25, 2010
Grant date	Sep 23, 2014
Priority date	—
Expiry date	Jan 22, 2031

Classification

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

Abstract

In at least one embodiment of the luminaire (1), it includes at least one optoelectronic semiconductor device (4) and at least one primary optical unit (11) which is disposed downstream of the semiconductor device (4) and is spaced apart therefrom. Furthermore, the luminaire (1) comprises a secondary optical unit (22) and/or a tertiary optical unit (33) which is/are disposed downstream of the primary optical unit (11). A proportion of at least 30% of radiation emitted by the semiconductor device (4) passes to the secondary optical unit (22) and/or to the tertiary optical unit (33). Furthermore, the secondary optical unit (22) and/or the tertiary optical unit (33) is/are arranged for small-angle scattering of the radiation emitted by the semiconductor device (4).

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