公开(公告)号：US20140245331A1

公开(公告)日：2014-08-28

申请号：US14188925

申请日：2014-02-25

申请人： Toshiba Samsung Storage Technology Korea Corporation

发明人： Ju-hee IM ,  Ki-bok KIM ,  Ji-sun AHN ,  Chan-ik LEE ,  Jin-ho JEONG

IPC分类号： G11B7/1378 ,  G11B17/02

CPC分类号： G11B7/1378 ,  G11B7/1365 ,  G11B7/1381 ,  G11B17/02

摘要： Provided is an optical pickup device that compensates for an aberration caused by a beam splitter. When a beam of light is reflected from a disc and proceeds towards a beam splitter, the beam splitter is designed to allow the reflected beam to pass therethrough. However, the beam splitter can cause an astigmatism in the reflected beam due to diffraction. According to various aspects herein, an optical pickup device may include a compensation device that generates an inverse astigmatism to compensate for the astigmatism generated by the beam splitter.

摘要翻译： 提供了一种用于补偿由分束器引起的像差的光学拾取装置。 当光束从光盘反射并朝向分束器移动时，分束器被设计成允许反射光束通过。 然而，分束器可能由于衍射而引起反射光束中的散光。 根据本文的各个方面，光学拾取装置可以包括产生反像散以补偿由分束器产生的象散的补偿装置。

公开(公告)号：US20140241142A1

公开(公告)日：2014-08-28

申请号：US14188853

申请日：2014-02-25

申请人： Toshiba Samsung Storage Technology Korea Corporation

发明人： Ki-bok KIM ,  Jin-sun AHN ,  Ju-hee IM ,  Jin-ho JEONG ,  Seung-man HAN

IPC分类号： G11B7/1353

CPC分类号： G11B7/1353 ,  G11B7/0903 ,  G11B7/0953 ,  G11B7/1275 ,  G11B2007/0006

摘要： Provided are an optical pickup and an optical information storage system including the same. The optical pickup includes a diffracting element that splits incident light into main light and a plurality of sub light. The diffracting element has at least three regions including first through third regions. A second region is disposed between a first region and a third region and has a phase difference from the first and third regions. The optical pickup detects a tracking error signal by using light diffracted by the diffracting element.

摘要翻译： 提供了一种光拾取器和包括其的光学信息存储系统。 光拾取器包括将入射光分解成主光和多个次光的衍射元件。 衍射元件具有包括第一至第三区域的至少三个区域。 第二区域设置在第一区域和第三区域之间，并且具有与第一和第三区域的相位差。 光学拾取器通过使用由衍射元件衍射的光来检测跟踪误差信号。