Video display system for locating a projected image adjacent a s

Details Video display system for locating a projected image adjacent a s Video display system for locating a projected image adjacent a s

1996-10-04

2000-02-08

Lee, Michael H.

Television

Special applications

Human body observation

348 65, 348744, 359823, 359443, 353 50, 600103, H04N 718

Patent

active

060232897

ABSTRACT:
A method and apparatus for projecting an image of a surgical field along an optical path to intersect a display screen which is nonperpendicular to the optical path and adjacent the surgical field. A video projector system and accompanying optics impart at least one of a tilted focal plane or depth of focus to the projected image. The optical path of the projected image is located adjacent the surgical field. A sterilizable display screen is located in the optical path adjacent the surgical field so that a normal to the screen is noncoincident with the optical path and the projected image on the screen is of constant focus across the screen.

REFERENCES:
patent: 3229570 (1966-01-01), Erban
patent: 4209807 (1980-06-01), Arita
patent: 4245256 (1981-01-01), Kokubo et al.
patent: 4479144 (1984-10-01), Yamazaki et al.
patent: 5101807 (1992-04-01), Kawashima
patent: 5311859 (1994-05-01), Monroe
patent: 5543832 (1996-08-01), Oravecz et al.

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