Self-focusing camera apparatus and method

Optics: motion pictures – Removable film strip magazine type

Patent

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Details

352140, 354 81, 354195, 358227, G03B 310

Patent

active

042367948

ABSTRACT:
A method and apparatus are provided which automatically focus a television camera or motion picture camera, or the like, in applications where, for any given camera-pointing direction, the desired subject will lie at a single-valued and predetermined distance from the camera such as on a planar surface. In one embodiment, a mechanical linkage enables a camera, shooting downward onto a flat playing field, to self-focus on any point in that field. In an electronic embodiment, a learn mode is included that handles events on more complicated terrains such as mountainous terrain in skiing events. In these cases, the self-focusing action is instantaneous, continuous and accurate.

REFERENCES:
patent: 3847474 (1974-11-01), Uterhart

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