发明名称 Optical pickup and manufacturing method for optical pickup
摘要 An optical pickup includes a first objective lens, a second objective lens having a numerical aperture different from that of the first objective lens, and an objective lens holder that holds the objective lenses. The first objective lens is attached to the objective lens holder via a spacer. The objective lens holder has a first fixture hole that receives the spacer with the first objective lens and a second fixture hole that receives the second objective lens. The first fixture hole is provided with a spacer supporting portion in which the spacer is inserted in a rotatable manner.
申请公布号 US2008095019(A1) 申请公布日期 2008.04.24
申请号 US20070905626 申请日期 2007.10.02
申请人 HATANO SHINYA;TAKAHASHI KAZUHIRO;SASAOKA HIROMASA;HOSODA RYOZO 发明人 HATANO SHINYA;TAKAHASHI KAZUHIRO;SASAOKA HIROMASA;HOSODA RYOZO
分类号 G11B7/135;G02B7/04 主分类号 G11B7/135
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