发明名称 |
Objective lens actuator and a disc apparatus using the same therein |
摘要 |
An objective lens actuator which drives an objective lens in a focusing direction and a tracking direction, so as to focus lights on a recording surface of an optical disc, as a recording medium of information. The objective lens actuator includes a magnet, a lens holder which is configured to hold the objective lens thereon, and four pieces of tracking coils which are disposed in a line on a side surface of the lens holder for holding the objective lens thereon, facing to the magnet.
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申请公布号 |
US7859774(B2) |
申请公布日期 |
2010.12.28 |
申请号 |
US20080265748 |
申请日期 |
2008.11.06 |
申请人 |
HITACHI MEDIA ELECTRONICS CO., LTD. |
发明人 |
OCHI MANABU;KIMURA KATSUHIKO;YAMADA SOUICHIROU;ITOU TETSUO |
分类号 |
G02B7/02;G02B3/02;G02B13/18 |
主分类号 |
G02B7/02 |
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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