Automatic focus system

Details Automatic focus system Automatic focus system

1994-03-14

1995-12-26

Perkey, W. B.

G03B 1336

Patent

active

054792347

ABSTRACT:
The invention provides an automatic focus system which can pursue a subject beyond established limits when the subject is moving. This invention is an automatic focus system equipped with a drive mechanism which automatically drives the focus adjustment lens and which contains a control mechanism which controls the drive range of the drive mechanism, a movement determination mechanism which determines whether the subject is moving, and a control release mechanism which releases the control of the control mechanism when it is determined by the movement determination mechanism that the subject is moving.

REFERENCES:
patent: 4531158 (1985-07-01), Murakami et al.
patent: 4639588 (1987-01-01), Shinoda
patent: 4980715 (1990-12-01), Utagawa

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