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:
Nov. 03, 2020
Filed:
Jul. 05, 2018
Signify Holding B.v., Eindhoven, NL;
Christoph Gerard August Hoelen, Valkenswaard, NL;
Simon Eme Kadijk, Veldhoven, NL;
Ludovicus Johannes Lambertus Haenen, Sint Oedenrode, NL;
Yun Li, Shanghai, CN;
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
The invention provides a lighting device () comprising a light source configured to provide light source light and a luminescent element () comprising an elongated light transmissive body (), the elongated light transmissive body () comprising a side face (), wherein the elongated light transmissive body () comprises a luminescent material () configured to convert at least part of the light source light () selected from one or more of the UV, visible light, and IR received by the elongated light transmissive body () into luminescent material radiation (). The side face comprises the radiation input face (), and the body further comprises a first face () and a second face () defining a length of the body, wherein the second face comprises a first radiation exit window (). The side face comprises a curvature with a radius r, and the concentration of the luminescent material is chosen such that at least 80% of the source light is absorbed within a first length x from the side face, wherein x/r<=0.4 applies.