发明名称 |
Auto focusing apparatus in a camera |
摘要 |
An auto focusing apparatus in a camera comprises a detecting device for detecting the measured distance values of an object corresponding to a plurality of areas in a photographing image field, a first determining device for determining a first measured distance value which is the measured distance value of the shortest distance from the plurality of measured distance values detected by the detecting device, a comparing device for comparing the first measured distance value determined by the first determining device with a threshold value, a second determining device for determining the mean value of the plurality of measured distance values detected by the detecting device as a second measured distance value, and a driving device for driving a photo-taking lens on the basis of the first measured distance value when it is judged by the comparing device that the first measured distance value is smaller than the threshold value, and driving the photo-taking lens on the basis of the second measured distance value when it is judged by the comparing device that the first measured distance value is equal to or greater than the threshold value.
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申请公布号 |
US5552853(A) |
申请公布日期 |
1996.09.03 |
申请号 |
US19950519177 |
申请日期 |
1995.08.25 |
申请人 |
NIKON CORPORATION |
发明人 |
MURAMATSU, MASARU;SATO, SHIGEMASA;OHISHI, SUEYUKI;OTANI, TADASHI |
分类号 |
G02B7/28;(IPC1-7):G03B13/36 |
主分类号 |
G02B7/28 |
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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