The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 17, 2016

Filed:

Mar. 17, 2015
Applicant:

Goodrich Lighting Systems Gmbh, Lippstadt, DE;

Inventors:

Robert Trinschek, Hamm, DE;

Frederik Kraemer, Hirschberg, DE;

Tomasz Kordecki, Hamm, DE;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 33/08 (2006.01); B60Q 3/02 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0806 (2013.01); B60Q 3/0293 (2013.01); H05B 33/0827 (2013.01);
Abstract

A multi-color light unit includes a plurality of lighting circuits, with each lighting circuit being coupled to a joint power terminal. The plurality of lighting circuits include a first lighting circuit, which includes a first current source, coupled to the joint power terminal, a plurality of first LED's, in operation emitting light of a first color, and a plurality of voltage drop diodes, in operation not emitting light, the plurality of first LED's and the plurality of voltage drop diodes being coupled to the first current source. The plurality of lighting circuits further include a second lighting circuit, which includes a second current source, coupled to the joint power terminal, and a plurality of second LED's, in operation emitting light of a second color, the plurality of second LED's being coupled to the second current source. The first current source and the second current source are of equal design.


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