发明名称 |
FOCUS ADJUSTMENT UNIT AND FOCUS ADJUSTMENT METHOD |
摘要 |
A focus adjustment unit of the present invention comprises a phase difference detection section for detecting extreme values, based on the image data, a periodicity-containing subject determination section for determining a periodicity-containing subject in the case where the phase difference detection section detects many extreme values having a high degree of correlation, and a control section for, when a periodicity-containing subject has been determined, determining whether or not a difference between a position of the focus lens shown by an extreme value corresponding to a position that is closest to a current focus lens position, and the current focus lens position, is outside a specified range, and if it is determined that the difference is outside the specified range, carrying out a focus adjustment operation based on the extreme value corresponding to the position that is closest to the current position of the focus lens. |
申请公布号 |
US2015092101(A1) |
申请公布日期 |
2015.04.02 |
申请号 |
US201414489626 |
申请日期 |
2014.09.18 |
申请人 |
Olympus Corporation |
发明人 |
Yamazaki Yukie;Kunugi Kazumasa;Omata Yoshinobu;Kikuchi Tetsuo |
分类号 |
H04N5/232;G02B7/28 |
主分类号 |
H04N5/232 |
代理机构 |
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代理人 |
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主权项 |
1. A focus adjustment device, having a photographing lens that includes a focus lens, for carrying out a focus adjustment operation based on image data that is generated by receiving light of a pupil divided subject image by means of the photographing lens and subjecting the received light to photoelectric conversion, comprising:
a phase difference detection section for detecting extreme values having a high degree of correlation, based on the image data, a periodicity-containing subject determination section for determining a periodicity-containing subject in the case where the phase difference detection section detects many extreme values having a high degree of correlation, and a control section for, when a periodicity-containing subject has been determined, determining whether or not a difference between a position of the focus lens shown by an extreme value corresponding to a position that is closest to a current focus lens position, among extreme values having a high degree of correlation, and the current focus lens position, is outside a specified range, and if it is determined that the difference is outside the specified range, carrying out a focus adjustment operation based on the extreme value corresponding to the position that is closest to the current position of the focus lens. |
地址 |
Tokyo JP |