Invention Grant
- Patent Title: Light source device, method for manufacturing the same and filament
- Patent Title (中): 光源装置，制造方法及灯丝
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Application No.: US14033334Application Date: 2013-09-20
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Publication No.: US09252007B2Publication Date: 2016-02-02
- Inventor: Takahiro Matsumoto , Shigemi Suzuki
- Applicant: STANLEY ELECTRIC CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: STANLEY ELECTRIC CO., LTD.
- Current Assignee: STANLEY ELECTRIC CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz & Volek PC
- Priority: JP2012-208735 20120921
- Main IPC: H01K1/10
- IPC: H01K1/10 ; H01K3/02 ; H01K5/00
Abstract:
A filament using a high melting point metal compound such as tantalum carbide is provided. As the filament, a filament comprising a tungsten base material, a tantalum layer coating the tungsten base material, and a tantalum carbide layer coating the tantalum layer is used. The tantalum layer and the tantalum carbide layer may be replaced with a hafnium layer and a hafnium carbide layer, respectively, or may be formed of a combination of tantalum and hafnium.
Public/Granted literature
- US20140084785A1 LIGHT SOURCE DEVICE, METHOD FOR MANUFACTURING THE SAME AND FILAMENT Public/Granted day:2014-03-27
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