Accession Number : ADD000024
Title : Low-Reflection Filter for Cathode Ray Tube Face Plate.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Sach, Gary M
Report Date : 18 Sep 1973
Pagination or Media Count : 4
Abstract : The patent describes a filter which permits a high contrast ratio to be obtained for operation of a CRT in intense ambient light and comprises a faceplate sandwich bonded to the viewing side of the phosphor coated CRT glass. The filter includes two layers of tempered glass, having a circular polarizer sandwiched between them. The layer of tempered glass attached to the CRT glass is covered with a conductive, neutral density, specular-reflective, filter coating. The filter coating may be connected to a conductive annular ring, which ring surrounds the other piece of tempered glass. This connection serves the dual purpose of providing an RFI shield and a Faraday shield.
Descriptors : *CATHODE RAY TUBE SCREENS, *PATENTS, *OPTICAL FILTERS, POLARIZING FILTERS, ANTIREFLECTION COATINGS, NICKEL ALLOY INCONEL, SANDWICH CONSTRUCTION, ELECTROMAGNETIC SHIELDING
Subject Categories : Recording and Playback Devices
Distribution Statement : APPROVED FOR PUBLIC RELEASE