Patent · US Active

Illumination device having luminous spots formed by light emitting diodes

US8042964B2 · kind B2 · utility

6Cited by

6References

3Claims

0Family size

Assignees

Siemens Aktiengesellschaft · DE
OSRAM Opto Semiconductors GmbH · DE

Inventors

Georg Bogner · Lappersdorf, DE
Patrick Kromotis · Regensburg, DE
Ralf Mayer · Weitra, AT
Heinrich Noll · Groß-Umstadt, DE

Key dates

Filing date	Sep 1, 2003
Grant date	Oct 25, 2011
Priority date	—
Expiry date	Jul 13, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2224/8592
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An illumination device for backlighting an image reproduction device containing light valves, the illumination device including a plurality of luminous spots arranged in grid format on a flat thermally conductive carrier. Each luminous spot having a plurality of light emitting diodes electrically insulated from one another, and a submount exhibiting good thermal conductivity and being connected to the carrier.

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