LOW-REFLECTION FILTER FOR CATHODE RAY TUBE FACE PLATE

The invention consists of a filter for the display screen of a cathode-ray tube (CRT). The filter 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.