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。

公开(公告)号：US6055218A

公开(公告)日：2000-04-25

申请号：US954256

申请日：1997-10-20

申请人： Toru Takeda ,  Akira Shimazu ,  Shinichi Yamamura ,  Katsuhiro Seo

发明人： Toru Takeda ,  Akira Shimazu ,  Shinichi Yamamura ,  Katsuhiro Seo

IPC分类号： G11B7/24 ,  G11B7/00 ,  G11B7/005 ,  G11B7/007 ,  G11B7/085 ,  G11B7/09

CPC分类号： G11B7/085 ,  G11B7/00718 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/007 ,  G11B7/00745

摘要： An optical reproducing apparatus according to the present invention includes a land/groove switching circuit for alternately switching reproduction of a record mark on a groove portion and a land portion. This allows a tracking operation to be carried out continuously at a connection point to a subsequent track in the recording direction without a laser beam from an optical pickup passing through an end of a spiral track. A recording medium according to the present invention includes a recording track formed of a groove portion and a land portion, and a record mark used for switching a tracking operation so that a light beam emitted from the optical pickup should be irradiated alternately on the groove portion and the land portion. When the record mark is detected, a track jump operation is carried out, and information is reproduced from the groove portion and the land portion alternately.

摘要翻译： 根据本发明的光学再现装置包括用于交替地切换在凹槽部分和岸台部分上的记录标记的再现的纹间/沟槽切换电路。 这允许在与记录方向上的后续轨道的连接点处连续地执行跟踪操作，而没有来自通过螺旋轨道的端部的光学拾取器的激光束。 根据本发明的记录介质包括由凹槽部分和凸台部分形成的记录轨道，以及用于切换跟踪操作的记录标记，使得从光学拾取器发射的光束应交替地照射在凹槽部分上 和陆地部分。 当检测到记录标记时，执行轨道跳转操作，并且交替地从凹槽部分和脊台部分再现信息。

公开(公告)号：US5416762A

公开(公告)日：1995-05-16

申请号：US869642

申请日：1992-04-16

申请人： Kiyoshi Ohmori ,  Katsuhiro Seo

发明人： Kiyoshi Ohmori ,  Katsuhiro Seo

IPC分类号： G11B17/028 ,  G11B17/03 ,  G11B17/04 ,  G11B17/043 ,  G11B19/20 ,  G11B23/03 ,  G11B33/08 ,  G11B7/09

CPC分类号： G11B17/0436 ,  G11B17/03 ,  G11B19/20 ,  G11B19/2018 ,  G11B23/0307 ,  G11B33/08

摘要： A disc recording and/or reproducing apparatus includes a holding device for holding a disc cartridge which is a cartridge main body and a disc housed in the cartridge main body, a rotating and driving device for rotationally driving the disc housed within the holding device, and a positioning device provided within the rotating and driving device for positioning the disc cartridge housed within the holding device. The recording disc may be positioned highly accurately within the disc cartridge in such a manner that resonant vibrations may be prevented from being produced on the chassis.

摘要翻译： 光盘记录和/或再现装置包括一个保持装置，用于保持一个盒式磁带，该盒式磁盘是一个盒主体和一个容纳在盒式磁盘主体中的磁盘，旋转和驱动装置，用于旋转地驱动容纳在保持装置内的磁盘;以及 设置在旋转和驱动装置内的定位装置，用于定位容纳在保持装置内的盘盒。 记录盘可以高度精确地定位在盘盒内，使得可以防止在底盘上产生共振振动。

公开(公告)号：US08466435B2

公开(公告)日：2013-06-18

申请号：US13180740

申请日：2011-07-12

申请人： Mitsuru Toishi ,  Katsuhiro Seo ,  Koji Takasaki ,  Shinji Yamada ,  Atsushi Fukumoto

发明人： Mitsuru Toishi ,  Katsuhiro Seo ,  Koji Takasaki ,  Shinji Yamada ,  Atsushi Fukumoto

IPC分类号： G01N21/64

CPC分类号： G01N21/645 ,  G01N15/147 ,  G01N2021/4709 ,  G01N2021/6471

摘要： A fine particle measuring device includes an optical filter that is divided into a plurality of areas and is disposed on an optical path on which light emitted from a fine particle, which is irradiated with light, is guided to an optical detector. In the fine particle measuring device, the optical filter includes a first area having wavelength selectivity by which the first area blocks reflected light from the fine particle and an unnecessary scattered light component and transmits fluorescence, and a second area that is disposed around at least the first area and has no wavelength selectivity so as to transmit a necessary scattered light component.

摘要翻译： 微粒测量装置包括被分成多个区域的光学滤波器，并且设置在从被照射光的微粒发射的光被引导到光学检测器的光路上。 在微粒测量装置中，滤光器包括具有波长选择性的第一区域，第一区域通过该第一区域阻挡来自细颗粒的反射光和不需要的散射光分量并透射荧光;以及第二区域，其设置在至少 第一区域并且没有波长选择性以便传输必要的散射光分量。

公开(公告)号：US20120243567A1

公开(公告)日：2012-09-27

申请号：US13403677

申请日：2012-02-23

申请人： Katsuhiro Seo ,  Hideya Chubachi

发明人： Katsuhiro Seo ,  Hideya Chubachi

IPC分类号： H01S3/13

CPC分类号： G01N15/1434 ,  G01N15/1459 ,  G02B27/108 ,  G02B27/144

摘要： A laser irradiation device includes: a laser light source; a mirror that reflects a part of light output from the laser light source and allows the remainder to pass; an optical detector that detects reflection light reflected by the mirror; and a feedback control circuit that receives a signal output from the optical detector and controls the output of the laser light source to keep a signal intensity constant, wherein a thickness of the mirror is set such that a distance between a beam spot of the reflection light reflected by a front surface of the mirror on the detector and a beam spot of reflection light reflected by a back surface of the mirror on the detector is equal to or more than a predetermined value.

摘要翻译： 激光照射装置包括：激光源; 反射从激光光源输出的光的一部分并允许剩余部分通过的反射镜; 检测由反射镜反射的反射光的光学检测器; 以及反馈控制电路，其接收从所述光检测器输出的信号并控制所述激光光源的输出以保持信号强度恒定，其中所述反射镜的厚度被设定为使得所述反射光束的光束点之间的距离 由检测器上的反射镜的前表面反射，并且由检测器上的反射镜的后表面反射的反射光的光束点等于或大于预定值。

公开(公告)号：US08014076B2

公开(公告)日：2011-09-06

申请号：US12817335

申请日：2010-06-17

申请人： Akira Suzuki ,  Fumisada Maeda ,  Mamoru Suzuki ,  Kayoko Tanaka ,  Katsuhiro Seo

发明人： Akira Suzuki ,  Fumisada Maeda ,  Mamoru Suzuki ,  Kayoko Tanaka ,  Katsuhiro Seo

IPC分类号： G02B1/06 ,  G02B3/12

CPC分类号： G02B3/14

摘要： A variable focal length lens includes: a lens portion including a pair of light transmissive members, at least one of which is deformable, and a light transmissive liquid medium sealed between the pair of light transmissive members; and a liquid medium container including a chamber that communicates with the lens portion and is filled with the liquid medium, the liquid medium container causing the shape of the surface of the deformable light transmissive member or members to be changed by changing the volume of the chamber to adjust the amount of liquid medium with which the lens portion is filled.

摘要翻译： 可变焦距透镜包括：透镜部分，其包括至少一个可变形的一对透光构件，以及密封在该对透光构件之间的透光液体介质; 以及液体介质容器，其包括与透镜部分连通并且填充有液体介质的腔室，通过改变腔室的体积来改变可变形透光构件的表面形状的液体介质容器 以调节透镜部分被填充的液体介质的量。

公开(公告)号：US20100328782A1

公开(公告)日：2010-12-30

申请号：US12817335

申请日：2010-06-17

申请人： Akira Suzuki ,  Fumisada Maeda ,  Mamoru Suzuki ,  Kayoko Tanaka ,  Katsuhiro Seo

发明人： Akira Suzuki ,  Fumisada Maeda ,  Mamoru Suzuki ,  Kayoko Tanaka ,  Katsuhiro Seo

IPC分类号： G02B3/14

CPC分类号： G02B3/14

摘要： A variable focal length lens includes: a lens portion including a pair of light transmissive members, at least one of which is deformable, and a light transmissive liquid medium sealed between the pair of light transmissive members; and a liquid medium container including a chamber that communicates with the lens portion and is filled with the liquid medium, the liquid medium container causing the shape of the surface of the deformable light transmissive member or members to be changed by changing the volume of the chamber to adjust the amount of liquid medium with which the lens portion is filled.

摘要翻译： 可变焦距透镜包括：透镜部分，其包括至少一个可变形的一对透光构件，以及密封在该对透光构件之间的透光液体介质; 以及液体介质容器，其包括与透镜部分连通并且填充有液体介质的腔室，通过改变腔室的体积来改变可变形透光构件的表面形状的液体介质容器 以调节透镜部分被填充的液体介质的量。

公开(公告)号：US20080151735A1

公开(公告)日：2008-06-26

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平面向上翻转，晶体材料的波长依赖性 最初设置的部分被大部分表示，并且进一步相对于光轴40a的厚度“ta”被设置成使得在光束中心处的相位差Δa从360°+ 180°= 540°变低 是将光束作为P偏振照射预定差值或60°的期望设计值。

公开(公告)号：US20070280085A1

公开(公告)日：2007-12-06

申请号：US11804907

申请日：2007-05-21

申请人： Katsuhiro Seo ,  Yoshiki Okamoto ,  Noriyuki Kato

发明人： Katsuhiro Seo ,  Yoshiki Okamoto ,  Noriyuki Kato

IPC分类号： G11B7/00

CPC分类号： G11B7/0903 ,  G11B7/0906 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1381 ,  G11B2007/0006

摘要： An optical disc device performs tracking control using a light amount difference at two overlapping areas. The optical disc device includes a splitter, objective lens, detection-signal generator, tracking-signal generator, and driver. The splitter splits the light beam from a light source into a main beam and sub-beams. The objective lens converges the split beams and illuminates a signal-recording-layer track. The detection-signal generator receives reflected light beams and generates a detection signal according to the reflected-light-beam light amounts. The tracking-signal generator generates a tracking error signal on the basis of the detection signal. The driver drives the objective lens in a tracking direction on the basis of the tracking error signal. The splitter causes the light amounts of the overlapping areas at sub-reflected-light beams to be less than a light amount of an area other than the overlapping areas.

摘要翻译： 光盘装置使用两个重叠区域的光量差进行跟踪控制。 光盘装置包括分光器，物镜，检测信号发生器，跟踪信号发生器和驱动器。 分流器将来自光源的光束分成主光束和子光束。 物镜会聚分离光束并照亮信号记录层光道。 检测信号发生器接收反射光束并根据反射光束光量产生检测信号。 跟踪信号发生器基于检测信号产生跟踪误差信号。 驱动器基于跟踪误差信号在跟踪方向上驱动物镜。 分路器使得副反射光束处的重叠区域的光量小于重叠区域以外的区域的光量。