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:
Dec. 03, 2019
Filed:
Apr. 28, 2016
Koninklijke Philips N.v., Eindhoven, NL;
Rifat Ata Mustafa Hikmet, Aachen, DE;
Roman Hohn, Aachen, DE;
LUMILEDS LLC, San Jose, CA (US);
Abstract
The invention provides a lighting device comprising a lighting unit, wherein the lighting unit comprises a light source configured to generate light source light and a luminescent material configured to convert at least part of the light source light into luminescent material light, wherein the lighting device is configured to generate lighting device light comprising at least part of said luminescent material light, wherein the luminescent material is configured to provide said luminescent material light upon excitation by said light source light in an excitation band (EX) of said luminescent material, wherein the light source is configured to provide said light source light with a full width half maximum (FWHM) of equal to or less than 30 nm, and wherein said light source is configured to excite the luminescent material in an isosbestic point (IP) of said excitation band (EX).