发明名称 |
Auto focus system |
摘要 |
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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申请公布号 |
US7345706(B2) |
申请公布日期 |
2008.03.18 |
申请号 |
US20030642143 |
申请日期 |
2003.08.18 |
申请人 |
FUJI PHOTO OPTICAL CO., LTD. |
发明人 |
KANAYAMA ATSUSHI;SASAKI TADASHI |
分类号 |
H04N5/232;G02B7/04;G03B3/00;G03B13/00 |
主分类号 |
H04N5/232 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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