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:
Aug. 20, 2019
Filed:
Jan. 08, 2018
Tridonic Gmbh & CO KG, Dornbirn, AT;
Karl Jonsson, Rancho Santa Margarita, CA (US);
TRIDONIC GMBH & CO KG, Dornbirn, AT;
Abstract
A luminaire includes a phosphor that emits non-coherent, visible light when excited, a laser diode that emits a laser beam to excite the phosphor, and a driver that outputs electrical DC power at or above the voltage level necessary to drive the laser diode. The current output from the driver to the laser diode is modulated with a code, preferably a random generated code. A visible light sensor detects light emitted from the phosphor and provides a feedback signal, which contains the code under normal operation. If the proper code is not detected in the feedback signal, power output to the laser diode is immediately ceased or reduced to a level safe for the human eye.