Pearlescent lamp

Details Pearlescent lamp Pearlescent lamp

C - Chemistry, Metallurgy

03

C

C03C 17/245 (2006.01) H01J 61/35 (2006.01) H01K 1/32 (2006.01) H01K 3/00 (2006.01)

Patent

CA 2114404

PEARLESCENT LAMP ABSTRACT A peralescent lamp comprising a hollow glass envelope enclosing a source of electric light has its interior surface coated an iridescent optical interference film over which is disposed a layer of particulate titanium oxide, wherein both the iridescent film and titanium oxide layer have been formed in-situ inside the lamp envelope as a reaction product of gaseous TiCl4 and H2O. The iridescent film is first formed on the interior envelope surface and then an electrostatic potential is applied to the envelope which changes the reaction produce to particulate titanium oxide which deposits on the interference film.

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