Patent · US Active

Surface light guide and planar emitter

US8998479B2 · kind B2 · utility

4Cited by

3References

20Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Peter Brick · Regensburg, DE
Stephan Kaiser · Regensburg, DE
Gerhard Kuhn · Altötting, DE
Ales Markytan · Regensburg, DE
Julius Muschaweck · Gauting, DE
Christian Neugirg · Regensburg, DE

Key dates

Filing date	Mar 23, 2011
Grant date	Apr 7, 2015
Priority date	—
Expiry date	May 21, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/0073
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A surface light guide has a radiation exit area extending along a main extension plane of the surface light guide and is provided for laterally coupling radiation. The surface light guide includes scattering locations for scattering the coupled radiation. The surface light guide includes a first boundary surface and a second boundary surface which delimit the light conductance of the coupled-in radiation in the vertical direction. A first layer and a second layer are formed on each other in the vertical direction between the first boundary surface and the second boundary surface. Further disclosed are a planar emitter including at least one surface light guide.

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