Invention Grant
- Patent Title: Fluorescent lamp with multi-layer phosphor coating
- Patent Title (中): 荧光灯带多层荧光粉涂层
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Application No.: US13280570Application Date: 2011-10-25
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Publication No.: US08461753B2Publication Date: 2013-06-11
- Inventor: Fangming Du , William Winder Beers , Jon Bennett Jansma
- Applicant: Fangming Du , William Winder Beers , Jon Bennett Jansma
- Applicant Address: US NY Schenectady
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Schenectady
- Agency: GE Global Patent Operation
- Agent Peter T. DiMauro
- Main IPC: H01J1/62
- IPC: H01J1/62

Abstract:
A low-pressure discharge lamp includes, in an exemplary embodiment, a light-transmissive envelope, a fill-gas composition capable of sustaining a discharge sealed inside the light-transmissive envelope, and a phosphor composition at least partially disposed on an interior surface of the light-transmissive envelope. The phosphor composition is disposed on an interior surface of the light-transmissive envelope in a plurality of layers that include at least a basecoat phosphor layer and a topcoat phosphor layer. The basecoat phosphor layer includes at least one halophosphor and the topcoat phosphor layer includes a blend of at least two rare earth phosphors. The basecoat phosphor layer has a greater Color Rendering Index (CRI) value than the topcoat phosphor layer.
Public/Granted literature
- US20130099656A1 FLUORESCENT LAMP WITH MULTI-LAYER PHOSPHOR COATING Public/Granted day:2013-04-25
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