Title:
【発明の名称】電 球
Document Type and Number:
Japanese Patent JP2002500814
Kind Code:
A
Abstract:
A lamp has a metal layer to prevent light escaping in an undesired direction. A sealed envelope wall encloses an interior space in which an electrical element is arranged. The wall is partly coated by the metal layer, preferably at a lamp end opposite a lamp cap. A light diffusing or absorbing layer over a side of the metal layer facing the interior space prevents light reflection back into the interior space. For use as a vehicle headlamp, the metal layer may be silvery as viewed from the outside so that it is not noticeable.
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Inventors:
Scholar Claus
Application Number:
JP54798299A
Publication Date:
January 08, 2002
Filing Date:
March 15, 1999
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
F21S8/10; H01K1/32; H01J61/35; (IPC1-7): H01K1/32
Attorney, Agent or Firm:
Akihide Sugimura (2 outside)