发明名称 |
Drive device, optical head, and optical disk recording/reproducing device |
摘要 |
A spherical aberration correction mechanism 30 includes a lens holder 35 that holds a collimator lens 16, a main shaft 36a that supports the lens holder 35 in a linearly movable manner, a lead screw 34 supported in a rotatable manner and provided with a screw thread formed of a first slope and a second slope each in a spiral shape on an outer circumference thereof, and a stepping motor 13 that rotates the lead screw 34. The lens holder 35 includes a rack portion 41 disposed between the main shaft 36a and the lead screw 34 and having a slope that abuts on the first slope and first and second stoppers 46a and 46b that regulate a relative position of the rack portion 41 with respect to the lead screw 34 so that the rack portion 41 does not abut on the second slope. |
申请公布号 |
US8130600(B2) |
申请公布日期 |
2012.03.06 |
申请号 |
US20070438156 |
申请日期 |
2007.10.09 |
申请人 |
NAKATA HIDEKI;SHIWA MASAYUKI;PANASONIC CORPORATION |
发明人 |
NAKATA HIDEKI;SHIWA MASAYUKI |
分类号 |
G11B7/00;G11B7/085;G11B7/125;G11B7/135 |
主分类号 |
G11B7/00 |
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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