发明名称 |
DRIVE DEVICE, IMAGE ACQUISITION DEVICE, AND ELECTRONIC EQUIPMENT |
摘要 |
<p>A drive device in which the frequency of a drive waveform applied to a piezoelectric element is easily settable with less obligation to consider resonance in a stationary member. The device includes a piezo element that expands and contracts according to a drive voltage, a transmission shaft that receives vibration produced by the element, a stationary member that holds the transmission shaft in a slidable state along the longitudinal direction of the transmission shaft, and a lens holder that is displaced together with the piezo element and transmission shaft relative to the stationary member according to drive of the piezo element. The piezo element and the transmission shaft move in the moving direction of the lens holder in synchronization with the lens holder according to drive of the piezo element in the state where the piezo element is spaced from the stationary member. By employing this structure, the frequency of the drive waveform applied to the piezo element can be set easily without considering resonance in the stationary member.</p> |
申请公布号 |
KR20110030702(A) |
申请公布日期 |
2011.03.23 |
申请号 |
KR20117003825 |
申请日期 |
2009.07.22 |
申请人 |
HITACHI MAXELL, LTD. |
发明人 |
KAWAMURA HITOSHI;TANI MANABU;HASUDA TAKASHI;SHINTA IKUO;AOKI SUSUMU;TAGUCHI KEISUKE |
分类号 |
G02B7/08;G02B7/04;H04N5/225;H04N5/232 |
主分类号 |
G02B7/08 |
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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