发明名称 Electrodynamic focus and radial slide drive for an optical disc system
摘要 An apparatus for recording and/or reading information on an optically readable rotating disc (3) comprises a slide (6)which can be driven in a radial direction in order to move an objective (1) arranged on the slide along the disc. The objective is driven directly in the radial direction by radial drive means (33) which act directly, i.e. not via the bearing means (21, 22), on the objective.
申请公布号 US4504935(A) 申请公布日期 1985.03.12
申请号 US19830483804 申请日期 1983.04.11
申请人 U.S. PHILIPS CORPORATION 发明人 JANSEN, GERARDUS L. M.
分类号 G11B21/02;G11B7/08;G11B7/085;G11B21/10;(IPC1-7):G11B7/00 主分类号 G11B21/02
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