公开(公告)号：KR1020040110664A

公开(公告)日：2004-12-31

申请号：KR1020030040084

申请日：2003-06-20

Applicant: 삼성전자주식회사

Inventor： 정미숙 ,  이명복 ,  조은형 ,  김해성 ,  손진승

IPC: G11B7/1374 ,  G02B13/00

CPC classification number: G11B7/1353 ,  G02B3/0087 ,  G02B13/0055 ,  G11B7/1374 ,  G11B7/13922

Abstract: PURPOSE: An objective lens optical system adopting a GRIN(Gradient Index) lens is provided to comprise a GRIN lens whose the refractive index is changed in a direction vertical to an optical axis and an optical axis direction, thereby obtaining a large allowable tolerance. CONSTITUTION: A GRIN lens(GR2) is formed with a refractive index 'n'. A PCD(Plano-Convex Diffractive) lens has a plane incident surface(Sp) and a convex light emitting surface(Sd) on a light-emitting optical path of the GRIN lens(GR2). The PCD lens separates an incident light refracted from the GRIN lens(GR2) into plural diffractive lights. The PCD lens can be disposed on the light-emitting optical path by being isolated at certain intervals, instead of being directly attached to a light-emitting surface of the GRIN lens(GR2).

Abstract translation: 目的：提供采用GRIN（渐变折射率）透镜的物镜光学系统，其包括在垂直于光轴和光轴方向的方向上折射率变化的GRIN透镜，从而获得大的允许公差。 构成：GRIN透镜（GR2）形成折射率“n”。 PCD（平凸衍射）透镜在GRIN透镜（GR2）的发光光路上具有平面入射面（Sp）和凸出的发光面（Sd）。 PCD透镜将从GRIN透镜（GR2）折射的入射光分离成多个衍射光。 PCD透镜可以通过以一定间隔隔离而放置在发光光路上，而不是直接附着到GRIN透镜（GR2）的发光表面。

公开(公告)号：KR100450796B1

公开(公告)日：2004-10-01

申请号：KR1020020000594

申请日：2002-01-05

Applicant: 삼성전자주식회사

Inventor： 조은형 ,  손진승 ,  박준민

IPC: G11B17/028

CPC classification number: G11B17/0284 ,  G11B17/0285 ,  G11B33/08 ,  G11B33/1486

Abstract: A cover plate for an optical disk drive designed to reduce disk vibrations and noise is provided. The cover plate is installed above a main frame of the optical disk drive and has a through hole in the center through which a disk clamp for clamping a disk placed on a turntable is fitted and a projection formed to oppose the disk up to a predetermined height in order to narrow a gap with the disk. Furthermore, the cover plate has a circular step formed opposite a surface corresponding to an outer circumference of the disk in the shape of an annular groove for lowering acoustic energy density of noise. The cover plate constructed in this way reduces disk vibration due to air damping effects resulting from a narrow gap between the disk and the cover plate while suppressing noise due to the presence of the abruptly expanded portion. Furthermore, the cover plate can be implemented without a separate device by making simple changes to the structure of cover plate.

Abstract translation: 提供了一种用于光盘驱动器的盖板，其设计用于减少盘片振动和噪音。 盖板安装在光盘驱动器的主框架上方并且在中心具有通孔，通过该通孔安装用于夹持放置在转台上的盘片的盘夹并且形成为与盘片相对地达到预定高度的突起 以便缩小与磁盘的间隙。 此外，盖板具有环形台阶，该环形台阶形成为与用于降低噪声的声能密度的环形凹槽形状的盘的外周相对应的表面。 以这种方式构造的盖板减少了由于盘和盖板之间的狭窄间隙导致的空气阻尼效应而引起的盘振动，同时抑制了由于存在突然扩大的部分而导致的噪音。 此外，通过简单地改变盖板的结构，盖板可以在没有单独的装置的情况下实现。

公开(公告)号：KR1020040021027A

公开(公告)日：2004-03-10

申请号：KR1020020052461

申请日：2002-09-02

Applicant: 삼성전자주식회사

Inventor： 니콜라이페트로프 ,  손진승 ,  조은형 ,  이명복

IPC: G11B7/1245

CPC classification number: G11B7/1384 ,  B82Y20/00 ,  G02B6/12004 ,  G02B6/1225 ,  G02B6/124 ,  G02B6/1245 ,  G02B6/30 ,  G11B7/124 ,  G11B7/1353 ,  G11B7/1359 ,  G11B7/1374 ,  G11B2007/13722

Abstract: PURPOSE: An integrated optical head having a coupler is provided to improve input coupling efficiency between a light source and a light guide layer, and output coupling efficiency between the light guide layer and an optical disc. CONSTITUTION: An integrated optical head includes a light source, a wave guide(105), an input coupler(103), an output coupler(107), a beam path converter, and photo-detectors(113a,113b). The wave guide guides a light beam emitted from the light source. The input coupler is located on one side of the top of the wave guide and couples the light beam to transmit it to the wave guide. The output coupler is located at the other side of the top of the wave guide and couples a light beam output from the wave guide to focus the beam on an optical disc(120). The beam path converter is provided on the wave guide and changes a path of a light beam that has been reflected from the optical disc and passed through the output coupler. The photo-detector receives the beam output from the beam path converter and converts the received beam into an electric signal to detect information of the optical disc.

Abstract translation: 目的：提供一种具有耦合器的集成光学头，以提高光源和光导层之间的输入耦合效率，并且在光导层和光盘之间输出耦合效率。 构成：集成光学头包括光源，波导（105），输入耦合器（103），输出耦合器（107），光束路径转换器和光电检测器（113a，113b）。 波导引导从光源发射的光束。 输入耦合器位于波导顶部的一侧，并将光束耦合到波导中。 输出耦合器位于波导顶部的另一侧，并耦合从波导输出的光束，以将光束聚焦在光盘（120）上。 光束路径转换器设置在波导上，并且改变已经从光盘反射并通过输出耦合器的光束的路径。 光检测器接收从光束路径转换器输出的光束，并将接收的光束转换成电信号以检测光盘的信息。