Document Type and Number:
Japanese Patent JPS5052113
Kind Code:
A
Abstract:
A light filter is disclosed which is adapted for transmitting luminous energy while reflecting thermal energy. The filter comprises a substrate body having a thin light filtering layer of metal deposited on one surface of the substrate body and a protective film of indium oxide coated on the filtering layer. An improved cathodic spraying process is disclosed for fabricating the light filter, wherein the layers are successively applied by advancing the substrate between first and second target electrodes consisting respectively of gold-based bismuth alloy and indium. The process may be conducted in dry air under reduced pressure.
Application Number:
JP4065374A
Publication Date:
May 09, 1975
Filing Date:
April 10, 1974
Export Citation:
International Classes:
C03C17/36; C23C14/06; C23C14/08; C23C14/18; (IPC1-7): C03C17/06