Signify Holding B.v.

Xiaogai Tian

Yanmeng Sun

Xiuru Wang

Songhui Chen

Jiahua Yan

Tungching Wu

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.

Growing community of inventors

SHANGHAI, China

Xiaogai Tian