Fluorescent lamp having improved barrier layer
AssigneeWestinghouse Electric Corp.
InventorLarry P. Rusch
Life of this patent
Estimating the term…
Abstract
A cost-reduced fluorescent lamp having an electrically conductive first layer carried on the inner surface of a vitreous envelope and an electrically non-conductive second layer carried on the electrically conductive first layer. The electrically non-conductive second layer is a mixture of very finely-divided aluminum oxide and finely-divided titanium dioxide in predetermined relative weight ratio.
Claims5
A fluorescent lamp comprising a vitreous envelope having electrodes operatively disposed at opposite ends thereof, an electrically conductive first layer carried on the inner surface of said vitreous envelope, an electrically non-conductive second layer carried on said electrically conductive first layer, said electrically non-conductive second layer consisting essentially of a mixture of very finely-divided aluminum oxide and finely-divided titanium dioxide in predetermined relative weight ratio, and phosphor means formed in at least one layer carried on said second layer.
Dependencies are inferred from the claim text.