Anti-Glare device for a computer terminal display tube

• US 4,253,737 A
• Filed: 02/12/1979
• Issued: 03/03/1981
• Est. Priority Date: 02/12/1979
• Status: Expired due to Term

• Current Assignee: Sun-Flex Company
• Original Assignee: Sun-Flex Company
• Inventors: Thomsen, Erik J., Brennan, Patrick W.
• Primary Examiner(s): Corbin, John K.
• Assistant Examiner(s): de los Reyes, B. W.
• Application Number:
  US06/011,112
• Time in Patent Office: 750 Days
• Field of Search: 350/276 R, 350/111, 350/144, 358/93, 358/148, 358/161, 358/187, 358/229, 358/242, 358/250, 358/252, 358/253, 358/255
• US Class Current: 359/614
• CPC Class Codes: H01J 2229/8922 Apparatus attached to vessel and not integral therewith
• CPC Class Codes: H01J 29/896 Anti-reflection means, e.g. eliminating glare due to ambient light
• CPC Class Codes: Y10T 428/24273 including aperture

Abstract

An anti-glare device for the display tube of a computer terminal or other video display tube wherein illuminated messages or images are presented on a highly reflective surface, comprising a microweave screen of fine black filaments in a fine mesh mounted in a flexible frame so that the screen conforms to and maintains contact with, the display tube. The frame is secured so that the screen covers the terminal tube, and substantially conforms to the surface thereof. The filaments are preferably approximately 0.0025 inch in diameter and there are approximately 150 filaments per inch.

Claims

1. An anti-glare device for a curved video display screen comprising:

a thin, lightweight, portable frame of a flexible material;

a microweave mesh of black filaments stretched across the inner surface of said frame;

said frame being wide enough that it resists bending in all directions in the plane of the mesh but being flexible in all directions transverse thereto so that said frame and stretched mesh will conform to the curvature of a terminal display scope to which said frame is attached; and

means for attaching said frame to a terminal display scope so that said mesh conforms to and contacts said scope over the surface thereof.

2. The anti-glare device defined by claim 1 including:

means on said frame for securing said flexible frame directly to the surface of a display scope.

3. The anti-glare device defined by claim 1 wherein:

said frame is of a size and shape to be clamped to said screen by the video terminal front panel.