Title:
【発明の名称】光源および光源を製造する方法
Document Type and Number:
Japanese Patent JP2003508875
Kind Code:
A
Abstract:
A light source, in particular incandescent lamp, with a bulb ( 1 ), a filament ( 2 ) arranged in the bulb ( 1 ), and a heating device ( 3 ) for the filament ( 2 ), the filament ( 2 ) emitting both visible light and heat radiation, is designed and constructed with respect to a high conversion efficiency between an electrical power input and emitted light output such that the filament ( 2 ) includes a flat section ( 4 ). A light source of this type may be produced by a method, wherein initially a filament ( 2 ) of a sintered metal powder is provided. Subsequently, the filament ( 2 ) is exposed to an atmosphere of carbon dioxide or of carbon dioxide and inert gas for forming a metal carbide. Finally, the filament ( 2 ) is sealed into the bulb ( 1 ).
Inventors:
Arnold, Jorg
Application Number:
JP2001519474A
Publication Date:
March 04, 2003
Filing Date:
March 24, 2000
Export Citation:
Assignee:
IP2H AG
International Classes:
H01K1/04; H01K1/02; H01K1/08; H01K1/10; H01K1/14; H01K1/32; H01K3/02; H01K11/00; (IPC1-7): H01K1/14; H01K1/08; H01K1/10; H01K1/32; H01K3/02
Attorney, Agent or Firm:
Takashi Tsuno (1 outside)