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. 14, 2024
Filed:
Dec. 28, 2021
Signify Holding B.v., Eindhoven, NL;
Xiaogai Tian, Shanghai, CN;
Xiuru Wang, Shanghai, CN;
Tungching Wu, Shanghai, CN;
Songhui Chen, Shanghai, CN;
Yanmeng Sun, Shanghai, CN;
Jiahua Yan, Shanghai, CN;
SIGNIFY HOLDINGS B.V., Eindhoven, NL;
Abstract
A lighting device () is disclosed comprising a transmissive housing () and a filament () within said transmissive housing. The filament comprises a transmissive substrate () carrying a plurality of solid state lighting elements () and a phosphor containing resin coating () enveloping said filament. The resin coating includes at least one region () leaking light produced by said solid state lighting elements that is unconverted by said phosphor and the transmissive housing carries a further phosphor layer () covering part of the transmissive housing for each of said regions of the resin coating, each of said further phosphor layers being arranged to receive said unconverted light leaking from at least one of said regions. Also disclosed is a method of manufacturing such a lighting device.