Automatic focusing device for camera lens

Details Automatic focusing device for camera lens Automatic focusing device for camera lens

1991-01-10

1993-07-13

Perkey, W. B.

G03B 1336

Patent

active

052278280

ABSTRACT:
An automatic focusing device by which a focusing lens is operated in accordance with an object distance measured by a distance measuring unit. The distance of an object in a distance measuring zone provided in a view finder is determined to detect an abrupt change thereof. If the object distance is abruptly changed, the focusing lens is not operated to focus on a new object appearing in the measuring zone. Conversely, if the object distance is not abruptly changed, the focusing lens is operated to again focus on the object in the measuring zone.

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