发明名称 |
OPTICAL APPARATUS FOR WRITING AND/OR READING RECORDING TRACKS BY MEANS OF A RADIATION BEAM |
摘要 |
<p>An optical apparatus (1) for reading a recording track on an optical disc (3) comprises an objective (6) supported by a combined bearing arrangement which permits translations (12) of the objective for focussing a light beam (2) on the disc and pivotal movements (13, 14) for following the recording track in a radial and eventually also a tangential direction. The combined bearing arrangement comprises a plain bearing with a stationary member (17) having a convex outer surface (18) and a cylindrical moving member (19) which relative to the stationary member moves in a sliding and a pivoting fashion.</p> |
申请公布号 |
HK57686(A) |
申请公布日期 |
1986.08.15 |
申请号 |
HK19860000576 |
申请日期 |
1986.08.07 |
申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
GIJZEN, WILHELMUS ADRIANUS HENRICUS |
分类号 |
G11B7/08;G11B7/09;(IPC1-7):G11B7/08 |
主分类号 |
G11B7/08 |
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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