Technique for depth of field viewing of images using an aspheric

Details Technique for depth of field viewing of images using an aspheric Technique for depth of field viewing of images using an aspheric

1998-01-14

2000-05-23

Metjahic, Safet

Optical: systems and elements

Projection screen

Curved

359454, 359460, 348832, G03B 2156, G03B 2160, H04N 572

Patent

active

060671912

ABSTRACT:
A screen is disclosed for viewing depth of field images. The screen includes a prismatic screen mounted between a flat image and a viewer. Additional optical elements may be provided to enlarge a viewed image. A light hood may be provided to reduce glare and other effects of ambient light. Coating the screen with an anti-reflective coating may provide further protection from ambient light. Restructuring the image into smaller image elements provides image quality for a video image or the like. An aspherical lens may be used to minimize or remove distortion of the image perceived by a viewer to the side, above or below the center viewing axis of the screen. The present invention may find particular application in computer monitor systems, medical and obstetric imaging such as sonograms, musculo-skeletal imaging, vascular imaging, angiograms, angioplasty, dental probes, catheter probes, ear probes, endoscopy, laparoscopy, pelviscopy and arthroscopy.

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