Technique for depth of field viewing of images using an endoscopic instrument
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
N/A
app pub date -
Jun 13, 2002
filing date -
Nov 23, 1993
priority date (Note) -
Abandoned
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Importance
Abstract
An endoscopic instrument capable of being optically coupled to a video monitor adapted with a prismatic screen is disclosed. The instrument includes a working channel of 0.35 mm and a biopsy instrument having a substantially tubular end. The prismatic screen is 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.
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Family
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Cited Art Landscape
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