公开(公告)号：US20120155240A1

公开(公告)日：2012-06-21

申请号：US13316085

申请日：2011-12-09

Applicant: Seong-su PARK ,  Joji ANZAI ,  Yong-han YOON ,  Jong-uk KIM ,  Ichiro MORISHITA

Inventor： Seong-su PARK ,  Joji ANZAI ,  Yong-han YOON ,  Jong-uk KIM ,  Ichiro MORISHITA

IPC: G11B7/1353 ,  G11B7/1374

CPC classification number: G11B7/1374 ,  G11B7/1353

Abstract: An optical pick-up apparatus for reproducing information recorded on an optical recording medium or recording information on the optical recording medium is provided. The optical pick-up apparatus includes a light source unit which generates beams; a diffraction element which diffracts the generated beams; and an objective lens which focuses a p order diffracted beam which is used for recording and reproducing information among a plurality of diffracted beams which are diffracted by the diffraction element on any one of a plurality of information layers which are formed on an optical recording medium. A p±1 order diffracted beam which is not used for recording and reproducing information is focused away from the plurality of information recording layers and on the surface of the optical recording medium.

Abstract translation: 提供了一种用于再现记录在光学记录介质上的信息或在光学记录介质上记录信息的光学拾取装置。 光学拾取装置包括产生光束的光源单元; 衍射元件衍射生成的光束; 以及物镜，其将用于在通过衍射元件衍射的多个衍射光束中记录和再现信息的p阶衍射光束聚焦在形成在光学记录介质上的多个信息层中的任何一个上。 不用于记录和再现信息的p±1级衍射光束从多个信息记录层和光记录介质的表面上聚焦。

公开(公告)号：US20100165820A1

公开(公告)日：2010-07-01

申请号：US12550604

申请日：2009-08-31

Applicant: Hyung Hoon KANG ,  Yong Han YOON ,  Byoung Ho CHOI ,  Toshiki UTO ,  Soo Yul JUNG

Inventor： Hyung Hoon KANG ,  Yong Han YOON ,  Byoung Ho CHOI ,  Toshiki UTO ,  Soo Yul JUNG

IPC: G11B7/00

CPC classification number: G11B7/1374 ,  G11B7/08505 ,  G11B7/0925 ,  G11B7/0945 ,  G11B7/1376 ,  G11B7/1378 ,  G11B7/13925

Abstract: An optical pickup apparatus including a motor, a rotary member connected to the motor, the rotary member having a movement part and a stop part, a lead member disposed on the rotary member such that the lead member moves along the movement part and stops at the stop part, and a lens connected to the lead member to correct an aberration. The motor to correct a spherical aberration of the optical pickup apparatus is used instead of a sensor to sense the position of the collimator lens during the movement of the collimator lens, thereby reducing costs. The collimator lens may be controlled by sensing the reference position of the collimator lens to correct a spherical aberration of an optical disc, thereby preventing damage to optical components due to malfunction of the collimator lens.

Abstract translation: 一种光拾取装置，包括电动机，连接到电动机的旋转构件，具有运动部分和止动部分的旋转构件，设置在旋转构件上的引导构件，使得引导构件沿着运动部分移动并停止在 停止部分，以及连接到引导部件的透镜来校正像差。 使用用于校正光学拾取装置的球面像差的电动机来代替传感器，以在准直透镜移动期间感测准直透镜的位置，从而降低成本。 可以通过感测准直透镜的参考位置来校正光盘的球面像差来控制准直透镜，从而防止由于准直透镜的故障而对光学部件的损坏。