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公开(公告)号：EP1657716A3
公开(公告)日：2007-03-07
申请号：EP05253531.7
申请日：2005-06-09
CPC分类号： G11B7/1353 , G11B7/131 , G11B2007/0006
摘要： A compatible optical pick-up apparatus, which records to and/or reproduce from both digital versatile disc (DVD)-type optical disks and compact disc (CD)-type optical disks for improving a signal regeneration capacity and a tracking capacity in operation at a high temperature. A polarized hologram (43) of the optical pick-up apparatus is divided into six diffraction regions. The rays of a first light (10a) diffracted at the first and second diffraction regions (E, F) are separately received by divided parts of a first bisected light-receiving portion (51b) of a photodetector (50).
摘要翻译： 兼容的光学拾取装置，其从数字通用盘（DVD）类型的光盘和光盘（CD）类型的光盘两者记录和/或再现以提高信号再生能力和在操作中的跟踪能力 高温。 光学拾取装置的偏振全息图（43）被分成六个衍射区域。 在第一和第二衍射区域（E，F）衍射的第一光线（10a）的光线被光电探测器（50）的第一等分光接收部分（51b）的分开部分分开接收。
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公开(公告)号：EP1657716A2
公开(公告)日：2006-05-17
申请号：EP05253531.7
申请日：2005-06-09
CPC分类号： G11B7/1353 , G11B7/131 , G11B2007/0006
摘要： A compatible optical pick-up apparatus, which records to and/or reproduce from both digital versatile disc (DVD)-type optical disks and compact disc (CD)-type optical disks for improving a signal regeneration capacity and a tracking capacity in operation at a high temperature. A polarized hologram (43) of the optical pick-up apparatus is divided into six diffraction regions. The rays of a first light (10a) diffracted at the first and second diffraction regions (E, F) are separately received by divided parts of a first bisected light-receiving portion (51b) of a photodetector (50).
摘要翻译： 一种兼容的光学拾取装置，其从数字通用盘（DVD）型光盘和光盘（CD）型光盘记录和/或再现，用于改善信号再生能力和操作中的跟踪能力 高温。 光学拾取装置的极化全息图（43）被分成六个衍射区域。 在第一和第二衍射区域（E，F）处衍射的第一光（10a）的光线被光电检测器（50）的第一二等分光接收部分（51b）的分开的部分分开接收。
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公开(公告)号：EP2037457A2
公开(公告)日：2009-03-18
申请号：EP08104115.4
申请日：2008-05-27
发明人： Park, Soo Han , Ichiro, Morishita , Park, Seong Su
CPC分类号： G11B7/1398 , G11B7/0903 , G11B7/1365 , G11B7/1374
摘要： An optical pickup to improve countermeasure capability of a disc by allowing polarized light of a spot on the disc to become elliptically polarized light includes a light source (20) to emit semiconductor laser light, an objective lens (30) to condense the light emitted from the light source and form an optical spot on a disc, and a wave plate (58) which is rotated such that the spot formed on the disc becomes elliptically polarized light.
摘要翻译： 一种通过允许光盘上的光点的偏振光变成椭圆偏振光来提高光盘的对策能力的光学拾取器包括：发射半导体激光的光源（20）;将从光盘发射的光聚焦的物镜（30） 该光源在光盘上形成一个光点，以及一个波片（58），该波片（58）被旋转，使得在光盘上形成的光点变成椭圆偏振光。
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公开(公告)号：EP1657716B1
公开(公告)日：2009-08-05
申请号：EP05253531.7
申请日：2005-06-09
CPC分类号： G11B7/1353 , G11B7/131 , G11B2007/0006
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公开(公告)号：EP2037457A3
公开(公告)日：2009-07-29
申请号：EP08104115.4
申请日：2008-05-27
发明人： Park, Soo Han , Ichiro, Morishita , Park, Seong Su
CPC分类号： G11B7/1398 , G11B7/0903 , G11B7/1365 , G11B7/1374
摘要： An optical pickup to improve countermeasure capability of a disc by allowing polarized light of a spot on the disc to become elliptically polarized light includes a light source (20) to emit semiconductor laser light, an objective lens (30) to condense the light emitted from the light source and form an optical spot on a disc, and a wave plate (58) which is rotated such that the spot formed on the disc becomes elliptically polarized light.
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