发明名称 |
Aperture control device and camera |
摘要 |
An aperture control device includes: an aperture first driving member that controls an aperture of a diaphragm through which light flux passes; an aperture second driving member that drives the aperture first driving member; a motor that drives the aperture second driving member; a detection device that detects start of movement of the aperture first driving member caused by the aperture second driving member driven by the motor; and a motor control device that controls an aperture value of the diaphragm by controlling a rotational amount of the motor after the detection device detects the start of movement of the aperture first driving member. |
申请公布号 |
US8744260(B2) |
申请公布日期 |
2014.06.03 |
申请号 |
US201313850772 |
申请日期 |
2013.03.26 |
申请人 |
Nikon Corporation |
发明人 |
Shida Masaru |
分类号 |
G03B7/10;G03B9/02 |
主分类号 |
G03B7/10 |
代理机构 |
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代理人 |
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主权项 |
1. An aperture control device, comprising:
an aperture first driving member that controls an aperture of a diaphragm through which light flux passes; an aperture second driving member that drives the aperture first driving member; a motor that drives the aperture second driving member; a detection device that detects start of movement of the aperture first driving member caused by the aperture second driving member driven by the motor; and a motor control device that controls an aperture value of the diaphragm by controlling a rotational amount of the motor after the detection device detects the start of movement of the aperture first driving member.
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地址 |
Tokyo JP |