发明名称 OPTICAL PICKUP
摘要 In an optical pickup for use in an optical disc device, wire rods are wound directly around a lens-coil holder to make tracking coils and focus coils. The lens-coil holder is divided into three holders, one of which holds an optical lens thereon and has on its sides wire-winding protrusions for wiring wire rods therearound to make tracking coils. The remaining holders have focus coils that are wound therearound. Alternatively, the lens-coil holder is divided into two holders, one of which has on its sides wire-winding protrusions for wiring wire rods therearound to make tracking coils. The remaining holder holds an optical lens thereon and has focus coils that are wound therearound. The lens-coil holder has a cavity for letting pass through a laser beam emitted in parallel to an optical disc surface.
申请公布号 US2011247021(A1) 申请公布日期 2011.10.06
申请号 US201113079872 申请日期 2011.04.05
申请人 YAMADA SOUICHIROU;HATO JUN;KIMURA KATSUHIKO;KUSANO YOSHITAKA 发明人 YAMADA SOUICHIROU;HATO JUN;KIMURA KATSUHIKO;KUSANO YOSHITAKA
分类号 G11B7/135 主分类号 G11B7/135
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