Title:
FILAMENT AND LIGHT SOURCE DEVICE
Document Type and Number:
Japanese Patent JP2015185221
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a filament capable of suppressing radiation in the infrared region even at an ultrahigh temperature of 2000 K or more.SOLUTION: A filament includes: a base material 10 constituted by a metal material; a white scattering body layer 20 covering the base material 10; and a visible light absorption layer 30 laminated on the white scattering body layer 20. The white scattering body layer 20 is formed by a second material (HfO+Si) in which a first material (SiO) having larger band-gap energy than an insulator is added to an insulator (HfO). The band-gap energy of the second material is larger than that of the insulator.
Inventors:
YOKOYAMA TAKAHIRO
Application Number:
JP2014057895A
Publication Date:
October 22, 2015
Filing Date:
March 20, 2014
Export Citation:
Assignee:
STANLEY ELECTRIC CO LTD
International Classes:
H01K1/04; H01K1/08
Attorney, Agent or Firm:
Patent Business Corporation Sannozaka Patent Office