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.
Patent No.:
Date of Patent:
May. 31, 2005
Filed:
Apr. 14, 2003
Markus Wicke, Lapperdorf, DE;
Christian Hacker, Regensburg, DE;
Burkard Wiesmann, Regensburg, DE;
Joachim Reill, Zeitlarn, DE;
Markus Wicke, Lapperdorf, DE;
Christian Hacker, Regensburg, DE;
Burkard Wiesmann, Regensburg, DE;
Joachim Reill, Zeitlarn, DE;
Osram Opto Semiconductor GmbH, Regensburg, DE;
Abstract
Method for defining the color group of an LED which emits mixed-color, in particular white, light. The CIE color space is divided by means of a network with two sets of intersecting network lines, one set being provided by a set of Judd straight lines and the other set by the line for the color loci of a Planckian radiator and also the associated lines of constant threshold value deviation, so that the network has a plurality of network cells bounded by network lines. The color locus of the LED is determined, and the network cell is determined in which the color locus of the LED is located. The LED is assigned to the color group of the network cell.