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. 04, 2015
Filed:
Dec. 17, 2012
Koninklijke Philips N.v., Eindhoven, NL;
Patrick Henricus Johannes Van Stijn, Eindhoven, NL;
Martinus Petrus Joseph Peeters, Weert, NL;
Hans-Helmut Bechtel, Roetgen, NL;
Matthias Heidemann, Alsdorf, DE;
Jordy Bernard Margreth Schoenmaekers, Ubachsberg, NL;
Peter Josef Schmidt, Aachen, DE;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
The invention provides alighting unit () comprising a light source () and a light conversion layer (). The light source () comprises a light emitting diode (LED) () and a first luminescent material layer () in physical contact with a light emitting surface () of the LED (). The first luminescent material layer () comprises a first luminescent material (), configured to convert at least part of LED light () into light () having a red component. The light source () is configured to generate light () having a blue component and having the red component of the light (). The light conversion layer (), configured at a non-zero distance (d) from the light source (), comprises a second luminescent material () configured to convert at least part of the light () into light (). The lighting unit () is configured to provide white lighting unit light ().