Near-infinity image display system

Facsimile and static presentation processing – Facsimile – Recording apparatus

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Details

358250, 358231, H04N 574, H04N 931

Patent

active

051575035

ABSTRACT:
A near-infinity image display system (10) has a convex faceplate cathode ray tube (12) positioned with respect to a concave mirror (14) such that the cathode ray tube (12) is in front of the center of curvature (16) of the mirror (14) and so that the mirror (14) reflects a near-infinity image of the visual display surface to an eyepoint (20) of an observer located below and in front of the center of curvature (16) of the mirror (14) and below the cathode ray tube (12). The cathode ray tube (12) is positioned at a height above the eyepoint (20) of the observer so that it does not interrupt the vertical field of view (24) of the image reflected to the eyepoint (20) of an observer. The concave mirror (12) may be a spherical, ellipsoidal or toroidal mirror. A multiple-display system (30) may be used to create a mosaic reflected image. In the multiple-display system (30), the convex faceplates of cathode ray tubes ( 12) are placed side by side, and optimally spaced apart at an angle (35) to provide a near-infinity mosaic reflection to an eyepoint (20) of a single observer or eyepoints (40) and (42) of multiple observers. In the multiple-display system (30), multiple observers are spaced apart a distance (41) that optimizes independent viewing of the near-infinity image by each observer.

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patent: 4383740 (1983-05-01), Bordovsky
patent: 4623223 (1986-11-01), Kempf
patent: 4859031 (1989-08-01), Berman

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