公开(公告)号：US07778141B2

公开(公告)日：2010-08-17

申请号：US11932200

申请日：2007-10-31

申请人： Katsuhiro Seo ,  Takashi Kobayashi ,  Yoshiki Okamoto

发明人： Katsuhiro Seo ,  Takashi Kobayashi ,  Yoshiki Okamoto

IPC分类号： G11B7/00

CPC分类号： G11B7/1365 ,  G02B27/286

摘要： The present invention can simplify the configuration of a polarization adjustment plate. According to the present invention, the crystal axis of the polarization adjustment wavelength plate 32 is so arranged as to be turned up from the X-Y plane being an orthogonal plane with respect to the optical axis 40a, and the wavelength dependence which the crystal material is originally provided with is largely expressed, and further the thickness “ta” with respect to the optical axis 40a is set up such that the phase difference Δ to be brought about at the beam center becomes low from 360°+180°=540° being a desired design value to irradiate the optical beam as the P-polarization by a predetermined difference value or 60°.

摘要翻译： 本发明可以简化偏振调节板的结构。 根据本发明，偏振调节波长板32的晶轴被布置成从相对于光轴40a的正交平面的XY平面翻转，并且晶体材料原来的波长依赖性 大大地表示，并且进一步相对于光轴40a的厚度“ta”被设置为使得相位差“Dgr” 在360°+ 180°= 540°处，在光束中心处的光束变为低于将光束作为P偏振光照射预定差值或60°的期望设计值。

公开(公告)号：US07764575B2

公开(公告)日：2010-07-27

申请号：US11585774

申请日：2006-10-25

申请人： Yoshiki Okamoto

发明人： Yoshiki Okamoto

IPC分类号： G11B7/08

CPC分类号： G11B7/0901 ,  G11B7/0943

摘要： A tracking error detecting method comprises the steps of causing intensity distributions of single light introduced into an objective lens to have symmetry with respect to the track direction of an optical recording medium and the direction oblique to the direction perpendicular to the track direction, dividing a light-receiving unit into at least light-receiving units of the track direction and light-receiving units of the direction perpendicular to the track direction and detecting a tracking error signal based on detection signals from the divided light-receiving units.

摘要翻译： 跟踪误差检测方法包括以下步骤：将引入物镜的单个光的强度分布相对于光学记录介质的轨道方向和与垂直于轨道方向的方向倾斜的方向相对应， 接收单元至少至轨道方向的光接收单元和垂直于磁道方向的方向的光接收单元，并且基于来自分开的光接收单元的检测信号检测跟踪误差信号。

公开(公告)号：US20100060960A1

公开(公告)日：2010-03-11

申请号：US12538318

申请日：2009-08-10

申请人： Kenji Tanaka ,  Koji Takasaki ,  Kazutatsu Tokuyama ,  Atsushi Fukumoto ,  Hidenori Mori ,  Yoshiki Okamoto

发明人： Kenji Tanaka ,  Koji Takasaki ,  Kazutatsu Tokuyama ,  Atsushi Fukumoto ,  Hidenori Mori ,  Yoshiki Okamoto

IPC分类号： G03H1/12 ,  G03H1/22 ,  G03H1/14

CPC分类号： G03H1/22 ,  G03H1/2286 ,  G03H2240/52 ,  G11B7/0065 ,  G11B7/128 ,  G11B7/1395

摘要： A reproduction device includes a light-emitting unit that emits reference light and coherent light, which is generated so as to have uniform light intensity and uniform phase, onto a hologram recording medium on which data is recorded by an interference pattern of signal light and the reference light, and a light-attenuating unit that attenuates the light intensity of the coherent light.

摘要翻译： 一种再现装置包括发射单元，其发射参考光和相干光，其被产生以具有均匀的光强度和均匀相位到其上通过信号光的干涉图案记录数据的全息图记录介质上，并且 以及衰减相干光的光强度的光衰减单元。

公开(公告)号：US20080176172A1

公开(公告)日：2008-07-24

申请号：US12007268

申请日：2008-01-08

申请人： Hideo Funakoshi ,  Masahito Hamada ,  Yoshiki Okamoto

发明人： Hideo Funakoshi ,  Masahito Hamada ,  Yoshiki Okamoto

IPC分类号： G03F7/30 ,  H01L21/027 ,  B05C5/00

CPC分类号： G03F7/3021

摘要： A device includes a rotary base; an approach stage; a substrate holding table and a nozzle head. The substrate holding table holds the work by suction, and comes into intimate contact with the approach stage and the rotary base through first and second annular seal members to form a liquid storage space, respectively. When the suction holding and the intimate contact are released, the substrate becomes rotatable together with the rotary base and the approach stage.

摘要翻译： 一种装置包括旋转底座; 进场阶段 基板保持台和喷嘴头。 基板保持台通过抽吸保持工件，并通过第一和第二环形密封构件与接近台和旋转底座紧密接触以分别形成液体储存空间。 当抽吸保持和紧密接触被释放时，基板与旋转底座和接近台一起可旋转。

公开(公告)号：US20080089205A1

公开(公告)日：2008-04-17

申请号：US11859165

申请日：2007-09-21

申请人： Yoshiki OKAMOTO ,  Katsuhiro Seo

发明人： Yoshiki OKAMOTO ,  Katsuhiro Seo

IPC分类号： G11B3/74

CPC分类号： G11B7/1353 ,  G11B7/1381 ,  G11B2007/0013

摘要： An optical pickup for recording/reproducing information on/from an optical disc having recording layers, includes a light source; an objective lens for condensing an optical beam emitted from the light source on the recording layer; a photo-detector having a light-receiving section for receiving return light from the optical disc; an optical-path separating unit for separating the optical path of the return light reflected by the optical disc from the optical path of the optical beam emitted from the light source; and a masking member having a masking unit shielding part of a passing-through optical beam, in which the masking unit shields the central region of the optical beam to be incident in the light-receiving section among the optical beams reflected by the other recording layers or surfaces different from the recording layer recording/reproducing information so as not to admit the central region to the light-receiving section.

摘要翻译： 一种用于在具有记录层的光盘上记录/再现信息的光学拾取器，包括光源; 用于将从光源发射的光束聚光在记录层上的物镜; 光检测器，具有用于从光盘接收返回光的光接收部分; 光路分离单元，用于将由光盘反射的返回光的光路与从光源发出的光束的光路分离; 以及遮蔽构件，其具有通过光束的掩模单元屏蔽部分，其中所述掩蔽单元屏蔽由所述其它记录层反射的光束中的入射在所述光接收部分中的所述光束的中心区域 或与记录层记录/再现信息不同的表面，以便不将中心区域接纳到光接收部分。

公开(公告)号：US20070036058A1

公开(公告)日：2007-02-15

申请号：US11500413

申请日：2006-08-08

申请人： Yoshiki Okamoto ,  Katsuhiro Seo

发明人： Yoshiki Okamoto ,  Katsuhiro Seo

IPC分类号： G11B7/135

CPC分类号： G11B7/1381 ,  G11B7/1353 ,  G11B7/1359 ,  G11B7/1395 ,  G11B2007/0013

摘要： A method for separating light coming from an illuminated multilayer medium having a plurality of reflective surfaces to reach a light receiver through a focusing lens includes the steps of splitting the light traveling toward the light receiver through the focusing lens into at least two portions along the optical axis thereof and separating a light component coming from a particular position of the illuminated medium from each of the split portions of the light by removing a light component focused at a position closer to the focusing lens than the focal position of the light component coming from the particular position between the two focal positions and/or removing a light component focused at a position closer to the light receiver than the focal position of the light component coming from the particular position between the two focal positions.

摘要翻译： 用于分离来自具有多个反射表面的照明多层介质的光以通过聚焦透镜到达光接收器的方法包括以下步骤：将通过聚焦透镜朝向光接收器传播的光分成沿光学至少两个部分 并且通过去除聚焦在比聚焦透镜更靠近聚焦透镜的位置处的光分量，将来自照明介质的特定位置的光分量从光分离部分分离出来 两个焦点位置之间的特定位置和/或去除聚焦在更靠近光接收器的位置处的光分量比来自两个焦点位置之间的特定位置的光分量的焦点位置。