Auto focus device

Details Auto focus device Auto focus device

2011-07-12

2011-07-12

Perkey, W. B. (Department: 2862)

Photography

With exposure objective focusing means, focusing aid, or...

Plural focusing or rangefinding areas

Reexamination Certificate

active

07978968

ABSTRACT:
Disclosed is an auto focus device that automatically and easily sets an AF frame to a focus range desired by a cameraman in an AF system.An auto focus device includes: a focusing unit that performs focusing on an imaging screen of a camera; a best focus range detecting unit that detects a best focus range from the imaging screen showing the focus result of the focusing unit; and an AF frame automatic setting unit that automatically sets the position of an AF frame indicating the range of an AF area, which is a target range focused by auto focus in the imaging screen, in the detected best focus range.

REFERENCES:
patent: 6157782 (2000-12-01), Aoyama
patent: 2005/0189419 (2005-09-01), Igarashi et al.
patent: 2007/0009251 (2007-01-01), Koskinen
patent: 2007/0019940 (2007-01-01), Sasaki
patent: 2008/0131109 (2008-06-01), Honjo et al.
patent: 1 471 455 (2004-10-01), None
patent: 2006-109199 (2006-04-01), None
patent: 2007-25595 (2007-02-01), None

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