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1. 发明公开

EP1691360A2 Optical unit and optical pickup apparatus 审中-公开
标题翻译： Optische Einheit und optische Lesekopfvorrichtung
公开(公告)号：EP1691360A2
公开(公告)日：2006-08-16
申请号：EP06250714.0
申请日：2006-02-10
申请人： Konica Minolta Opto, Inc.
发明人： Nagai, Fumio, Konica Minolta Opto, Inc. , Kimura, Tohru, Konica Minolta Opto, Inc.
IPC分类号： G11B7/135
CPC分类号： G11B7/1374 , G11B7/1275 , G11B7/1362 , G11B7/13922 , G11B2007/0006
摘要： An optical unit for an optical pickup apparatus for recording and or reproducing information onto or from the first to third optical recording media by applying the first to third light beams emitted from the first to third light sources (L1,L2,L3), the optical unit comprises a mirror (7) having dichroic mirror layer including reflecting surfaces (71a and 70a) on both surfaces and an objective lens (8) including a phase structure on the optical surface of the objective lens. The reflecting surface (71a) of the mirror reflects the first to second light beams and guides them to the objective lens. Reflecting surface (70a) reflects the third light beams and guides them to the objective lens. The phase structure on the objective lens corrects the spherical aberration of the first and the second light beams, and focuses the first light beams onto BD (10), the second beams onto DVD (11) and the third beams onto CD (12).
摘要翻译：光学单元，用于通过施加从第一至第三光源（L1，L2，L3）发射的第一至第三光束，将信息记录到第一至第三光学记录介质上或从第一至第三光学记录介质再现信息，单元包括具有分色镜层的反射镜（7），该分色镜层包括两个表面上的反射表面（71a和70a）和在物镜的光学表面上包括相位结构的物镜（8）。镜的反射面（71a）反射第一至第二光束并将它们引导到物镜。反射表面（70a）反射第三光束并将它们引导到物镜。物镜上的相位结构校正第一和第二光束的球面像差，并将第一光束聚焦到BD（10）上，将第二光束聚焦到DVD（11）上，将第三光束聚焦到CD（12）上。

2. 发明公开

EP1691360A3 Optical unit and optical pickup apparatus 审中-公开
标题翻译：光学单元和光学拾取装置
公开(公告)号：EP1691360A3
公开(公告)日：2008-04-09
申请号：EP06250714.0
申请日：2006-02-10
申请人： Konica Minolta Opto, Inc.
发明人： Nagai, Fumio, Konica Minolta Opto, Inc. , Kimura, Tohru, Konica Minolta Opto, Inc.
IPC分类号： G11B7/135 , G11B7/125
CPC分类号： G11B7/1374 , G11B7/1275 , G11B7/1362 , G11B7/13922 , G11B2007/0006
摘要： An optical unit for an optical pickup apparatus for recording and or reproducing information onto or from the first to third optical recording media by applying the first to third light beams emitted from the first to third light sources (L1,L2,L3), the optical unit comprises a mirror (7) having dichroic mirror layer including reflecting surfaces (71a and 70a) on both surfaces and an objective lens (8) including a phase structure on the optical surface of the objective lens. The reflecting surface (71a) of the mirror reflects the first to second light beams and guides them to the objective lens. Reflecting surface (70a) reflects the third light beams and guides them to the objective lens. The phase structure on the objective lens corrects the spherical aberration of the first and the second light beams, and focuses the first light beams onto BD (10), the second beams onto DVD (11) and the third beams onto CD (12).

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