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1. 发明授权

US07706218B2 Optical pickup apparatus and controlling method thereof 有权
标题翻译：光拾取装置及其控制方法
公开(公告)号：US07706218B2
公开(公告)日：2010-04-27
申请号：US11401871
申请日：2006-04-12
申请人： Jung-gug Pae , Bong-gi Kim , Hyo-chan Lee , Soo-han Park , Seok-jung Kim
发明人： Jung-gug Pae , Bong-gi Kim , Hyo-chan Lee , Soo-han Park , Seok-jung Kim
IPC分类号： G11B7/00
CPC分类号： G11B7/08511 , G11B2007/0006
摘要： An optical pickup apparatus includes an objective lens that focuses light on an optical recording medium; an actuator that drives the objective lens in a direction of an optical axis of the objective lens toward or away from an optical recording medium in response to an input voltage applied to the actuator; an actuator driven distance sensor that senses a distance the actuator moves according to time or the input voltage applied to the actuator; an input voltage calculator that calculates an input voltage to be applied to the actuator that compensates for a hysteresis phenomenon that occurs during movement of the actuator based on the distance sensed by the actuator driven distance sensor; and a controller that controls operation of the actuator according to the input voltage calculated by the input voltage calculator.
摘要翻译：光学拾取装置包括将光聚焦在光学记录介质上的物镜; 响应于施加到致动器的输入电压，将物镜朝向或远离光学记录介质的物镜的光轴的方向驱动物镜的致动器; 致动器驱动的距离传感器，其感测致动器根据时间或施加到致动器的输入电压移动的距离; 输入电压计算器，其计算施加到所述致动器的输入电压，其基于由所述致动器驱动距离传感器感测到的距离来补偿所述致动器的运动期间发生的滞后现象; 以及根据由输入电压计算器计算的输入电压来控制致动器的操作的控制器。

2. 发明申请

US20060233073A1 Optical pickup apparatus and controlling method thereof 有权
标题翻译：光拾取装置及其控制方法
公开(公告)号：US20060233073A1
公开(公告)日：2006-10-19
申请号：US11401871
申请日：2006-04-12
申请人： Jung-gug Pae , Bong-gi Kim , Hyo-chan Lee , Soo-han Park , Seok-jung Kim
发明人： Jung-gug Pae , Bong-gi Kim , Hyo-chan Lee , Soo-han Park , Seok-jung Kim
IPC分类号： G11B7/00
CPC分类号： G11B7/08511 , G11B2007/0006
摘要： An optical pickup apparatus includes an objective lens that focuses light on an optical recording medium; an actuator that drives the objective lens in a direction of an optical axis of the objective lens toward or away from an optical recording medium in response to an input voltage applied to the actuator; an actuator driven distance sensor that senses a distance the actuator moves according to time or the input voltage applied to the actuator; an input voltage calculator that calculates an input voltage to be applied to the actuator that compensates for a hysteresis phenomenon that occurs during movement of the actuator based on the distance sensed by the actuator driven distance sensor; and a controller that controls operation of the actuator according to the input voltage calculated by the input voltage calculator.
摘要翻译：光学拾取装置包括将光聚焦在光学记录介质上的物镜; 响应于施加到致动器的输入电压，将物镜朝向或远离光学记录介质的物镜的光轴的方向驱动物镜的致动器; 致动器驱动的距离传感器，其感测致动器根据时间或施加到致动器的输入电压移动的距离; 输入电压计算器，其计算施加到所述致动器的输入电压，其基于由所述致动器驱动距离传感器感测到的距离来补偿所述致动器的运动期间发生的滞后现象; 以及根据由输入电压计算器计算的输入电压来控制致动器的操作的控制器。

3. 发明授权

US07426172B2 Optical module and optical pickup including the same 有权
标题翻译：光学模块和光学拾取器包括它
公开(公告)号：US07426172B2
公开(公告)日：2008-09-16
申请号：US10834998
申请日：2004-04-30
申请人： Bong-gi Kim , Soo-han Park , Hyo-chan Lee , Jong-uk Kim
发明人： Bong-gi Kim , Soo-han Park , Hyo-chan Lee , Jong-uk Kim
IPC分类号： G11B7/135 , G11B7/09
CPC分类号： G11B7/1353 , G11B7/0909 , G11B7/123 , G11B7/1263 , G11B7/127 , G11B7/131 , G11B7/1356 , G11B7/1359 , G11B7/1398 , G11B2007/0006
摘要： An optical pickup includes an optical module that detects an information signal and/or an error signal by radiating light to a recording medium and receives light reflected by the recording medium. The optical module includes a light source; an optical path changer that changes a path of light emitted from the light source; a main photodetector that receives light that is reflected off a recording medium back to the optical module to detect an information signal and/or an error signal; and a hologram element that generates an astigmatism of the light incident onto the optical module. Since most optical elements of the optical pickup except an objective lens are packaged in the optical module, the entire structure of the optical pickup can be simplified and the number of bonding points for fixing the optical elements of the optical pickup on a base can be reduced.
摘要翻译：光学拾取器包括光学模块，其通过向记录介质照射光并接收由记录介质反射的光来检测信息信号和/或误差信号。光学模块包括光源; 光路改变器，其改变从光源发射的光的路径; 主光电检测器，其将从记录介质反射的光返回到光模块以检测信息信号和/或误差信号; 以及产生入射到光学模块上的光的散光的全息元件。由于除了物镜之外的光学拾取器的大多数光学元件被封装在光学模块中，所以可以简化光学拾取器的整体结构，并且可以减少用于将光学拾取器的光学元件固定在基座上的接合点的数量。

4. 发明授权

US07092325B2 Method of arranging optical pickup system and optical recording and/or reproducing apparatus having the arranged optical pickup system 有权
标题翻译：具有配置光拾取系统的光学拾取系统和光学记录和/或再现装置的布置方法
公开(公告)号：US07092325B2
公开(公告)日：2006-08-15
申请号：US10460655
申请日：2003-06-13
申请人： Bong-gi Kim , Chun-seong Park , Soo-han Park , Moon-whan Lee , Hyo-chan Lee , Jong-uk Kim , Seong-su Park , Tae-youn Heor , Do-hoan Nam
发明人： Bong-gi Kim , Chun-seong Park , Soo-han Park , Moon-whan Lee , Hyo-chan Lee , Jong-uk Kim , Seong-su Park , Tae-youn Heor , Do-hoan Nam
IPC分类号： G11B7/00
CPC分类号： G11B7/131 , G11B7/0903 , G11B7/0906 , G11B2007/0006
摘要： A method of arranging an optical pickup system on a deck of an optical recording and/or reproducing apparatus, which enables detection of a tracking error signal using one photodetector based on a three-beam method and by a differential phase detection method. The optical pickup system includes a light source, a diffractive optical element which diffracts a light beam incident from the light source and splits the same into at least three beams, a plate-type beam splitter which changes a propagation path of the light beam, and a photodetector including at least one main photodetector having at least four sections and a plurality of sub-photodetectors. The optical pickup system is constructed so as to have a reflecting mirror redirect the propagation path of the light beam emitted from the light source toward a recording medium. The method of arranging the optical pickup includes, where the propagation path of the light beam transmitted through the plate-type beam splitter to the photodetector is an optical path axis, arranging the optical pickup system so as to have the optical path axis tilted with respect to an axis in a tangential direction of the recording medium and have the photodetector placed away from a rotation center of a motor that rotates the recording medium, and selectively optimizing the arrangement of the photodetector to detect a tracking error signal by the differential phase detection method.
摘要翻译：一种在光学记录和/或再现装置的平台上布置光学拾取系统的方法，其能够使用基于三光束方法的一个光电检测器和通过差分相位检测方法检测跟踪误差信号。光拾取系统包括光源，衍射从光源入射的光束并衍射成至少三个光束的衍射光学元件，改变光束传播路径的板式分束器，以及光电检测器，其包括至少一个具有至少四个部分的主光电检测器和多个子光电检测器。光学拾取系统被构造成具有将从光源发射的光束的传播路径重定向到记录介质的反射镜。布置光学拾取器的方法包括：将透过板式分束器的光束的传播路径传播到光电检测器的方法是将光学拾取系统布置成使光学轴线相对于到记录介质的切线方向的轴线上，并且将光电检测器放置成远离旋转记录介质的马达的旋转中心，并且选择性地优化光电检测器的布置以通过差分相位检测方法检测跟踪误差信号。

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