Auto focus system

Details Auto focus system Auto focus system

2008-03-18

2008-03-18

Villecco, John M. (Department: 2622)

Television

Camera, system and detail

Optics

C348S345000, C396S104000, C250S201200

Reexamination Certificate

active

10642143

ABSTRACT:
Auto focus control is exerted based on a focus evaluation value indicating a degree of sharpness of an image obtained from a plurality of image pickup devices placed at positions of different light path lengths. There is provided a device which makes a correction on sensitivity of the focus evaluation value obtained from each image pickup devices. It is thereby possible to make an adequate correction on a sensitivity of the focus evaluation value so as to exert the auto focus control with high accuracy. It is also possible to automatically make a correction on the sensitivity of the focus evaluation value and eliminate troublesome labor. All or a part of signal processing for the auto focus control is performed by a single processing part by time-sharing. Thereby, a circuit scale can be miniaturized and power consumption can be reduced.

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Japanese Office Action having dispatch date of Apr. 27, 2007, w/ English translation.
Japanese Office Action dated May 18, 2007, w/ English translation.

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