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1.发明授权Optical pick up apparatus with a single beam system and having a diffraction grating 有权具有单光束系统并具有衍射光栅的光学拾取装置公开(公告)号：US07885166B2
公开(公告)日：2011-02-08
申请号：US11979129
申请日：2007-10-31
IPC分类号： G11B7/135
CPC分类号： G11B7/133 , G11B7/0901 , G11B7/0906 , G11B7/094 , G11B7/0943 , G11B7/131 , G11B7/1353 , G11B7/1381 , G11B2007/0013
摘要： An optical pickup apparatus includes a semiconductor laser for emitting a laser light, an objective lens for irradiating the light flux emitted from the semiconductor laser onto an optical disc, and a light detector for receiving the light flux reflected from the optical disc. The light detector has a light receiving part that comprises a region 1, a region 2, a region 3, a region 4, a region 5, a region 6 and a region 7.
摘要翻译： 光拾取装置包括用于发射激光的半导体激光器，用于将从半导体激光器发射的光束照射到光盘上的物镜，以及用于接收从光盘反射的光束的光检测器。 光检测器具有包括区域1，区域2，区域3，区域4，区域5，区域6和区域7的光接收部分。
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公开(公告)号：US20080095017A1
公开(公告)日：2008-04-24
申请号：US11712184
申请日：2007-02-27
IPC分类号： G11B7/00
CPC分类号： G11B7/1376 , G11B2007/0006
摘要： The present invention provides a thin optical disc drive for three different media BD, DVD, and CD for notebook personal computers and an optical pickup to be mounted thereon.An optical pickup includes a first laser light source which emits an optical beam with a first wavelength; a second laser light source which emits an optical beam with a second wavelength shorter than the first wavelength; a first collimate lens which converts the optical beam emitted from the first laser light source into an approximately-parallel optical beam; a second collimate lens which converts the optical beam emitted from the second laser light source into an approximately-parallel optical beam; a first objective lens which converges the approximately-parallel optical beam converted by the first collimate lens, onto an optical disc; and a second objective lens which converges the approximately-parallel optical beam converted by the second collimate lens, onto an optical disc; whereinthe first and second objective lenses are arranged in the optical disc radial direction; the second objective lens is arranged closer to the side of the optical disc outer circumference than the first objective lens; the first collimate lens is arranged on the right-hand side when the second objective lens is viewed from the first objective lens; the second collimate lens is arranged on the left-hand side when the first objective lens is viewed from the second objective lens; and the gap between the first collimate lens and the first objective lens is larger than the gap between the second collimate lens and the second objective lens.
摘要翻译： 本发明提供了一种用于笔记本个人计算机的三种不同媒体BD，DVD和CD的薄型光盘驱动器，以及要安装在其上的光学拾取器。 光拾取器包括发射具有第一波长的光束的第一激光光源; 第二激光光源，其发射比第一波长短的第二波长的光束; 第一准直透镜，其将从第一激光光源发射的光束转换成大致平行的光束; 第二准直透镜，其将从所述第二激光光源发射的光束转换成大致平行的光束; 第一物镜，其将由第一准直透镜转换的近似平行的光束会聚到光盘上; 以及第二物镜，其将由所述第二准直透镜转换的所述近似平行的光束会聚到光盘上; 其中所述第一和第二物镜布置在所述光盘径向方向上; 所述第二物镜配置为比所述第一物镜更靠近所述光盘外周的一侧; 当从第一物镜观察第二物镜时，第一准直透镜布置在右手侧; 当从第二物镜观察第一物镜时，第二准直透镜布置在左手侧; 并且第一准直透镜和第一物镜之间的间隙大于第二准直透镜和第二物镜之间的间隙。
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公开(公告)号：US20080095014A1
公开(公告)日：2008-04-24
申请号：US11672133
申请日：2007-02-07
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/1275 , G11B7/1353 , G11B2007/0006
摘要： An optical pickup equipped with a laser light source which emits light beams of at least three wavelengths for recording/reproducing a plurality of information recording media detects light quantities of the light beams of three wavelengths using one light intensity monitor element. More specifically, one light intensity monitor element is arranged between a first laser light source and a second laser light source, light beams of wavelength λ1 and wavelength λ2 emitted from the first laser light source are made to proceed substantially straightforward, the optical path of the light beam of wavelength λ3 emitted from the second laser light source is changed to a diagonal one so as to cause the light beam to be introduced diagonally to the light receiving surface of the one light intensity monitor element. Furthermore, the central axis line of the light receiving surface of the one light intensity monitor element is separated from the emitted light axis of the first laser light source and a reflecting member is provided above the emitting light axis of the second laser light source.
摘要翻译： 配备有发射用于记录/再现多个信息记录介质的至少三个波长的光束的激光源的光学拾取器使用一个光强度监视元件来检测三个波长的光束的光量。 更具体地，在第一激光光源和第二激光光源之间配置有一个光强度监视元件，使得从第一激光光源发射的波长λ1和波长λ2的光束基本上直接进行，光路 从第二激光光源发射的波长λ3的光束被改变为对角线，以使光束被对角地引导到一个光强度监视元件的光接收表面。 此外，一个光强度监视元件的受光面的中心轴线与第一激光光源的发射光轴分离，反射部件设置在第二激光光源的发光轴的上方。
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公开(公告)号：US20080094976A1
公开(公告)日：2008-04-24
申请号：US11979131
申请日：2007-10-31
IPC分类号： G11B5/58
CPC分类号： G11B7/133 , G11B7/0901 , G11B7/0906 , G11B7/094 , G11B7/0943 , G11B7/131 , G11B7/1353 , G11B7/1381 , G11B2007/0013
摘要： A method of detecting a servo signal of an optical disc having a plurality of recording layers includes focusing and irradiating a laser light onto the optical disc, dividing a laser light reflected from the optical disc into a plurality of reflected laser lights by a division element, wherein each of said reflected laser lights having a different outgoing direction, and irradiating the reflected laser lights onto a plurality of light receiving parts of a light detector. A focus error signal is detected under a knife edge method and a tracking error signal is detected.
摘要翻译： 检测具有多个记录层的光盘的伺服信号的方法包括将激光聚焦并照射到光盘上，通过分割元件将从光盘反射的激光分成多个反射激光， 其中每个所述反射激光具有不同的输出方向，并将反射的激光照射到光检测器的多个光接收部分上。 在刀刃法下检测到聚焦误差信号，并检测到跟踪误差信号。
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公开(公告)号：US20080094948A1
公开(公告)日：2008-04-24
申请号：US11680705
申请日：2007-03-01
IPC分类号： G11B7/00
CPC分类号： G11B7/133 , G11B7/0901 , G11B7/0906 , G11B7/094 , G11B7/0943 , G11B7/131 , G11B7/1353 , G11B7/1381 , G11B2007/0013
摘要： An optical pickup apparatus is provided with a dividing element having a plurality of regions. The dividing element is capable of dividing a light flux reflected by the optical disc into a plurality of light fluxes having different outgoing directions. Each region of the dividing element and light receiving parts of a light detector are structured such that when a target information recording layer of the optical disc is brought into focus, a light flux reflected from the target information recording layer is focused on the light receiving parts of the light detector, and a light flux reflected from other information recording layer than the target information recording layer is not irradiated onto the light receiving parts of the light detector.
摘要翻译： 光拾取装置具有多个区域的分割元件。 分割元件能够将由光盘反射的光束分成具有不同输出方向的多个光束。 分光元件的各个区域和光检测器的受光部分被构造为使得当光盘的目标信息记录层被聚焦时，从目标信息记录层反射的光束聚焦在光接收部分 并且从目标信息记录层的其它信息记录层反射的光束不被照射到光检测器的光接收部分上。
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公开(公告)号：US20080093569A1
公开(公告)日：2008-04-24
申请号：US11979132
申请日：2007-10-31
IPC分类号： H01L31/14
CPC分类号： G11B7/133 , G11B7/0901 , G11B7/0906 , G11B7/094 , G11B7/0943 , G11B7/131 , G11B7/1353 , G11B7/1381 , G11B2007/0013
摘要： An optical pickup apparatus includes a semiconductor laser for emitting a laser light, an objective lens for irradiating the light flux emitted from the semiconductor laser onto an optical disc, and a light detector for receiving the light flux reflected from the optical disc. The light detector has a light receiving part that comprises five regions of a region 1, a region 2, a region 3 and a region 4.
摘要翻译： 光拾取装置包括用于发射激光的半导体激光器，用于将从半导体激光器发射的光束照射到光盘上的物镜，以及用于接收从光盘反射的光束的光检测器。 光检测器具有包含区域1，区域2，区域3和区域4的五个区域的光接收部分。
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7.发明授权Optical pickup having radially arranged lenses in a low profile construction 有权光拾取器具有处于低轮廓结构的径向布置的透镜公开(公告)号：US08169880B2
公开(公告)日：2012-05-01
申请号：US13209732
申请日：2011-08-15
IPC分类号： G11B7/00
CPC分类号： G11B7/1376 , G11B2007/0006
摘要： An optical pickup includes a first source which emits a first beam with a first wavelength; a second source which emits a second beam with a wavelength shorter than the first wavelength; a first collimate lens which collimates the first beam; a second collimate lens which collimates the second beam; a first objective lens which converges the first collimated beam onto an optical disc; and a second objective lens which converges the second collimated beam onto the disc. The first and second objective lenses are arranged in the disc radial direction. The second objective lens is arranged closer to the side of the disc outer circumference than the first objective lens. The first collimate lens is arranged on the right-hand side when the second objective lens is viewed from the first objective lens. The second collimate lens is arranged on the left-hand side when the first objective lens is viewed from the second objective lens. The gap between the first collimate lens and the first objective lens is larger than the gap between the second collimate lens and the second objective lens.
摘要翻译： 光拾取器包括：发射具有第一波长的第一光束的第一光源; 发射波长短于第一波长的第二光束的第二光源; 准直第一光束的第一准直透镜; 准直第二光束的第二准直透镜; 将第一准直光束会聚到光盘上的第一物镜; 以及将第二准直光束会聚到盘上的第二物镜。 第一和第二物镜被配置在盘径向。 第二物镜比第一物镜更靠近盘外周侧。 当从第一物镜观察第二物镜时，第一准直透镜布置在右手侧。 当从第二物镜观察第一物镜时，第二准直透镜布置在左手侧。 第一准直透镜和第一物镜之间的间隙大于第二准直透镜和第二物镜之间的间隙。
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公开(公告)号：US08154962B2
公开(公告)日：2012-04-10
申请号：US11672133
申请日：2007-02-07
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/1275 , G11B7/1353 , G11B2007/0006
摘要： An optical pickup equipped with a laser light source which emits light beams of at least three wavelengths for recording/reproducing a plurality of information recording media detects light quantities of the light beams of three wavelengths using one light intensity monitor element. More specifically, one light intensity monitor element is arranged between a first laser light source and a second laser light source, light beams of wavelength λ1 and wavelength λ2 emitted from the first laser light source are made to proceed substantially straightforward, the optical path of the light beam of wavelength λ3 emitted from the second laser light source is changed to a diagonal one so as to cause the light beam to be introduced diagonally to the light receiving surface of the one light intensity monitor element. Furthermore, the central axis line of the light receiving surface of the one light intensity monitor element is separated from the emitted light axis of the first laser light source and a reflecting member is provided above the emitting light axis of the second laser light source.
摘要翻译： 配备有发射用于记录/再现多个信息记录介质的至少三个波长的光束的激光源的光学拾取器使用一个光强度监视元件来检测三个波长的光束的光量。 更具体地，在第一激光光源和第二激光光源之间配置有一个光强度监视元件，使得从第一激光光源发射的波长λ1和波长λ2的光束基本上直接进行，光路 将从第二激光光源发射的波长λ3的光束改变为对角线，以使光束被对角地引导到一个光强度监视元件的光接收表面。 此外，一个光强度监视元件的受光面的中心轴线与第一激光光源的发射光轴分离，反射部件位于第二激光光源的发光轴的上方。
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9.发明授权Optical pickup having radially arranged lenses in a low profile construction 有权光拾取器具有处于低轮廓结构的径向布置的透镜公开(公告)号：US08014258B2
公开(公告)日：2011-09-06
申请号：US12776223
申请日：2010-05-07
IPC分类号： G11B7/00
CPC分类号： G11B7/1376 , G11B2007/0006
摘要： An optical pickup includes a first source which emits a first beam with a first wavelength; a second source which emits a second beam with a wavelength shorter than the first wavelength; a first collimate lens which collimates the first beam; a second collimate lens which collimates the second beam; a first objective lens which converges the first collimated beam onto an optical disc; and a second objective lens which converges the second collimated beam onto the disc. The first and second objective lenses are arranged in the disc radial direction. The second objective lens is arranged closer to the side of the disc outer circumference than the first objective lens. The first collimate lens is arranged on the right-hand side when the second objective lens is viewed from the first objective lens. The second collimate lens is arranged on the left-hand side when the first objective lens is viewed from the second objective lens. The gap between the first collimate lens and the first objective lens is larger than the gap between the second collimate lens and the second objective lens.
摘要翻译： 光拾取器包括：发射具有第一波长的第一光束的第一光源; 发射波长短于第一波长的第二光束的第二光源; 准直第一光束的第一准直透镜; 准直第二光束的第二准直透镜; 将第一准直光束会聚到光盘上的第一物镜; 以及将第二准直光束会聚到盘上的第二物镜。 第一和第二物镜被配置在盘径向。 第二物镜比第一物镜更靠近盘外周侧。 当从第一物镜观察第二物镜时，第一准直透镜布置在右手侧。 当从第二物镜观察第一物镜时，第二准直透镜布置在左手侧。 第一准直透镜和第一物镜之间的间隙大于第二准直透镜和第二物镜之间的间隙。
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10.发明授权Optical pickup apparatus and optical disc apparatus with a single beam system 有权具有单光束系统的光学拾取装置和光盘装置公开(公告)号：US07978587B2
公开(公告)日：2011-07-12
申请号：US12497966
申请日：2009-07-06
IPC分类号： G11B7/135
CPC分类号： G11B7/133 , G11B7/0901 , G11B7/0906 , G11B7/094 , G11B7/0943 , G11B7/131 , G11B7/1353 , G11B7/1381 , G11B2007/0013
摘要： An optical pickup apparatus is provided with a dividing element having a plurality of regions. The dividing element is capable of dividing a light flux reflected by the optical disc into a plurality of light fluxes having different outgoing directions. Each region of the dividing element and light receiving parts of a light detector are structured such that when a target information recording layer of the optical disc is brought into focus, a light flux reflected from the target information recording layer is focused on the light receiving parts of the light detector, and a light flux reflected from other information recording layer than the target information recording layer is not irradiated onto the light receiving parts of the light detector.
摘要翻译： 光拾取装置具有多个区域的分割元件。 分割元件能够将由光盘反射的光束分成具有不同输出方向的多个光束。 分光元件的各个区域和光检测器的受光部分被构造为使得当光盘的目标信息记录层被聚焦时，从目标信息记录层反射的光束聚焦在光接收部分 并且从目标信息记录层的其它信息记录层反射的光束不被照射到光检测器的光接收部分上。
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