Photography – With exposure objective focusing means – focusing aid – or... – Plural focusing or rangefinding areas
Reexamination Certificate
2006-08-28
2010-02-09
Koval, Melissa Jan (Department: 2862)
Photography
With exposure objective focusing means, focusing aid, or...
Plural focusing or rangefinding areas
C359S698000
Reexamination Certificate
active
07660519
ABSTRACT:
An autofocus apparatus includes an imaging device that captures a subject image through a photographic lens; an AF area determining device that determines a range of image signals to be used for autofocus adjustment based upon image signals provided by the imaging device; a focus adjustment device that adjusts a focal point position achieved through the photographic lens by driving a focus lens so as to maximize contrast achieved with the image signals in the determined range; and a control device that controls the focus adjustment device, if the range of the image signals determined by the AF area determining device has been altered, so as to adjust the focal point position by using image signals in the altered range.
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Iwane Yukikazu
Maeda Toshiaki
Takahashi Shigeo
Watanabe Toshimi
Koval Melissa Jan
Nikon Corporation
Oliff & Berridg,e PLC
Parker Autumn
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