Glare reduction shield

• US 5,015,072 A
• Filed: 11/29/1989
• Issued: 05/14/1991
• Est. Priority Date: 11/29/1989
• Status: Expired due to Fees

• Current Assignee: Sperry Marine, Inc. (Northrop Grumman Corporation)
• Original Assignee: Sperry Marine, Inc. (Northrop Grumman Corporation)
• Inventors: Howell, Jesse A.
• Primary Examiner(s): Dzierzynski, Paul M.
• Assistant Examiner(s): Ben, Loha
• Application Number:
  US07/445,590
• Time in Patent Office: 531 Days
• Field of Search: 350/276 R, 350/276 SL, 350/284, 350/399, 358/247, 358/249, 358/250, 358/252, 358/253
• US Class Current: 359/488.01
• CPC Class Codes: G02B 27/0018 with means for preventing ghost images anti-reflection coatings G02B1/11

Abstract

A glare reducing shield usable with a touchscreen display includes a shade positioned above the display and a circular polarizer mounted within the shade and above touch-screen display. The circular polarizer is mounted at a height sufficient to permit activation of touch finger control functions on the touch-screen display. Reflections from the circular polarizer are reduced by shaping the circular polarizer to direct light reflected therefrom to light absorbing material coating the inner surfaces of the hood.

Claims

1. A glare reduction shield comprising:

shade means, having parallel side walls, enclosing a predetermined volume for shading a stationary display surface area at a base of said volume; and

glare reducing means coupled to said shade means and positioned at an adjustable height above said display surface area for reducing glare from said display surface area.

2. An apparatus in accordance with claim 1, wherein said glare reducing means has a concave, positive slope configuration.

3. An apparatus in accordance with claim 2, wherein said glare reducing means is arcuately shaped and positioned in said shade means to establish a positive slope for a line parallel to said parallel side walls and passing through a first point on a front edge of said glare reducing means and a second point on a rear edge of said glare reducing means.

4. An apparatus in accordance with claim 2, wherein said glare reducing means includes a circular polarizer.

5. An apparatus in accordance with claim 1, further including:

means for pivotally mounting one edge of said front and rear edges of said glare reducing means to said shade means; and

means for guiding an edge of said front and rear edgess opposite said one edge to selectable heights above said display surface area.

6. An apparatus in accordance with claim 5, further including means coupled to all interior surfaces of said shade means for absorbing light reflected from said glare reducing means.

7. An apparatus in accordance with claim 6, wherein said glare reducing means has a concave, positive slope configuration for directing light reflected from said glare reducing means to said light absorbing means.

8. An appartus in accordance with claim 7, wherein said glare reducing means includes a circular polarizer.

9. An apparatus in accordance with claim 8, wherein said glare reducing means is arcuately shaped and positioned in said shade means to establish a positive slope for a line parallel to said parallel side walls and passing through a first point on a front edge of said glare reducing means and a second point on a rear edge of said glare reducing means.