发明名称 |
Rotation amount detecting system of deflection mirror for optical disc drive |
摘要 |
Disclosed is a rotation amount detecting system for detecting a rotation amount of a deflection mirror, which is rotatable about an rotation axis, employed in an optical disc drive. The rotation amount detecting system is provided with a light emitting system that emits a light beam to the deflection mirror. The light beam has a line-like cross section extending in a direction perpendicular to the rotation axis. Further, a detecting system is provided to receive the beam reflected by the deflection mirror and determines the rotation amount of the deflection mirror in accordance with the received beam.
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申请公布号 |
US6404485(B1) |
申请公布日期 |
2002.06.11 |
申请号 |
US20000482147 |
申请日期 |
2000.01.12 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
KUBO WATARU;TAKISHIMA SUGURU;FUJII HIROTAKA |
分类号 |
G01B11/26;G11B7/085;G11B7/12;G11B7/125;G11B7/135;(IPC1-7):G01B11/26 |
主分类号 |
G01B11/26 |
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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