The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 1994
Filed:
May. 07, 1992
Nils I Thomas, Roanoke, VA (US);
Larry D Kiser, Roanoke, VA (US);
ITT Corporation, New York, NY (US);
Abstract
A thin film, intagliated phosphor screen structure includes an optical fiber bundle in which each of the fibers has its glass core etched below the level of its cladding sheath at the internal surface of the screen, and a phosphor layer is deposited as a thin film which fills in the core recesses. Preferably, the upper surfaces of the phosphor layers are formed with a spherical or parabolic shape, which is obtained by surface tension when the phosphor film is annealed. The upper surfaces of the phosphor layers may also be finished by polishing. An aluminum reflective layer may also be coated on the phosphor layer. The bottom walls of the cores are preferably etched to be convex or concave to provide a lens effect. The intagliated phosphor screen can transmit 90% to 95% or more of the light generated in the phosphor layers, for an output gain factor of 5 or more over conventional phosphor screens.