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11. 发明授权

US4467462A Signal detection system for use in an optically reproducing apparatus 失效
标题翻译：用于光学再现装置的信号检测系统
公开(公告)号：US4467462A
公开(公告)日：1984-08-21
申请号：US314482
申请日：1981-10-23
申请人： Tsutomu Shibata
发明人： Tsutomu Shibata
IPC分类号： G11B7/08 , G11B7/09 , G11B7/095 , G11B7/12 , G11B7/135 , G11B7/1359 , G11B21/00
CPC分类号： G11B7/0906 , G11B7/0908 , G11B7/095 , G11B7/12 , G11B7/1359 , G11B2007/0919
摘要： A light beam emitted from a laser light source is made incident upon a video disc by means of an objective lens and a light flux reflected by the disc is made incident upon a light detector arranged in a far field of an information track of the disc. The light detector includes four light receiving regions divided in a track direction and a direction perpendicular to the track direction. A first sum of output signals from diagonally aligned two light receiving regions and a second sum of the remaining two light receiving regions are derived and then a sum signal and a difference signal of the first and second sums are formed. The difference signals are sampled by sampling pulses generated at positive going and/or negative going zero cross points of the sum signal to generate sampled values. A tracking error signal is obtained from sampled values.
摘要翻译：从激光光源发射的光束通过物镜入射到视盘上，并且由盘反射的光束入射到布置在盘的信息轨道的远场中的光检测器。光检测器包括在轨道方向和垂直于轨道方向的方向上划分的四个光接收区域。导出来自对角线排列的两个光接收区域的输出信号和剩余的两个光接收区域的第二和的第一和，然后形成第一和第二和的和信号和差分信号。通过在和信号的正向和/或负向零交叉点处产生的采样脉冲对差分信号进行采样，以产生采样值。从采样值获得跟踪误差信号。

12. 发明授权

US4425636A Method and apparatus for reproducing optically an information recorded on a record medium along tracks 失效
标题翻译：用于沿着轨道光学地再现记录在记录介质上的信息的方法和装置
公开(公告)号：US4425636A
公开(公告)日：1984-01-10
申请号：US301092
申请日：1981-09-10
申请人： Tohru Musha , Kiichi Kato , Kenichi Ito
发明人： Tohru Musha , Kiichi Kato , Kenichi Ito
IPC分类号： G02B7/28 , G11B7/08 , G11B7/09 , G11B7/12 , G11B7/135 , G11B7/1359 , G11B7/1381 , G11B11/105 , G11B7/00 , G11B21/02
CPC分类号： G11B11/10515 , G11B11/10543 , G11B11/10576 , G11B7/08 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/12 , G11B7/1359 , G11B7/1381 , G11B2007/0919
摘要： In a method and apparatus for detecting an information signal and a focussing error signal of an objective lens with respect to a video disc on which main and sub beams emitted from a laser light source are to be focussed as light spots by the objective lens, the main and sub beams reflected by the video disc are made incident as parallel light fluxes upon a detection prism surface which is set substantially at a critical angle with respect to the main beam, but at an angle smaller or larger than the critical angle with respect to the sub beam, and two light fluxes of the reflected main beam which situate on respective sides of a boundary plane including the central light ray and perpendicular to a plane of incidence, and are reflected by the reflection surface are separately received by two light receiving regions which are divided along a boundary plane including the main beam reflected by the reflection surface and perpendicular to the plane of incidence. The focussing error signal is derived as a difference between output signals from the two light receiving regions and the information signal is derived as a sum of the output signals from the two light receiving regions. The sub beam transmitted through and refracted by the reflection surface is received by a light detector and a tracking error signal is derived by detecting a variation in a light amount of the sub beam impinging upon the light detector.
摘要翻译：在用于检测物镜的信息信号和聚焦误差信号的方法和装置中，相对于其中从激光光源发射的主光束和子光束被物镜聚焦为光点的视盘，由视频盘反射的主光束和副光束作为平行光束入射到检测棱镜表面上，检测棱镜表面相对于主光束基本上设置在临界角，但是以相对于主光束的临界角小于或大于副光束和位于包括中心光线并且垂直于入射平面的边界面的相应侧上并被反射表面反射的反射主光束的两个光束分别被两个光接收区域其沿着包括由反射表面反射并垂直于入射平面的主光束的边界平面划分。聚焦误差信号被导出为来自两个光接收区域的输出信号之间的差异，并且信息信号被导出为来自两个光接收区域的输出信号的和。由光检测器接收透射并被反射面折射的子光束，并且通过检测入射到光检测器上的子光束的光量的变化导出跟踪误差信号。

13. 发明申请

US20160111123A1 OPTICAL INFORMATION RECORDING/REPRODUCTION DEVICE AND ADJUSTMENT METHOD 审中-公开
标题翻译：光信息记录/再现设备和调整方法
公开(公告)号：US20160111123A1
公开(公告)日：2016-04-21
申请号：US14892019
申请日：2013-06-14
申请人： HITACHI CONSUMER ELECTRONICS CO., LTD.
发明人： Mayumi NAGAYOSHI , Taku HOSHIZAWA , Kazuyoshi YAMAZAKI , Makoto HOSAKA
IPC分类号： G11B7/1353 , G11B7/1392 , G11B7/1374 , G11B7/1362 , G11B7/1359
CPC分类号： G11B7/1353 , G03H1/0465 , G11B7/0065 , G11B7/1359 , G11B7/1362 , G11B7/1374 , G11B7/1378 , G11B7/13927 , G11B7/1398
摘要： The optical information recording/reproduction device for recording information by irradiating an optical information recording medium with signal light and reference light to form a hologram, and reproducing the information by irradiating the hologram with the reference light, wherein the optical information recording/reproduction device is provided with a branching element for branching laser light from a laser light source into signal light and reference light, a spatial light modulation unit for adding two-dimensional information to the signal light, an objective lens for irradiating an optical information recording medium with the signal light, a photodetector for detecting diffracted light from the optical information recording medium when irradiated with the reference light, and an optical axis adjustment unit disposed between the laser light source and the branching element, the optical axis adjustment unit adjusting the optical axis of the laser light.
摘要翻译：光信息记录/再现装置，用于通过用信号光和参考光照射光学信息记录介质来形成全息图来记录信息，并通过用参考光照射全息图再现信息，其中光信息记录/再现装置是设置有用于将来自激光光源的激光分支为信号光和参考光的分支元件，用于将二维信息添加到信号光的空间光调制单元，用于向信息记录介质照射信号的物镜光，用于当用参考光照射时检测来自光学信息记录介质的衍射光的光电检测器，以及设置在激光光源和分支元件之间的光轴调节单元，光轴调节单元调节激光的光轴光。

14. 发明申请

US20050117486A1 Optical pickup unit and optical disk unit 审中-公开
标题翻译：光学拾取单元和光盘单元
公开(公告)号：US20050117486A1
公开(公告)日：2005-06-02
申请号：US10945264
申请日：2004-09-21
申请人： Sou Ishika
发明人： Sou Ishika
IPC分类号： G11B7/135 , G11B5/55 , G11B7/00 , G11B7/125 , G11B7/1263 , G11B7/1359
CPC分类号： G11B7/1359 , G11B7/1263
摘要： An optical pickup unit has a light emitting device which emits laser light, and a monitor unit formed of a transparent resin, which integrally forms a photoreceptor device which receives the laser light and a circuit device connected to the photoreceptor device. A part of the transparent resin of the monitor unit is disposed in a part of an optical path of the laser light, the transparent resin causes part of the laser light to be reflected or refracted for supply to the photoreceptor device, the photoreceptor device outputs a detection signal corresponding to the part of the laser light, and upon receipt of the detection signal from the photoreceptor device, the circuit device performs a signal process and produces an output.
摘要翻译：光拾取单元具有发射激光的发光器件和由透明树脂形成的监视器单元，该透明树脂一体地形成接收激光的感光器件和连接到感光器件的电路器件。监视器单元的透明树脂的一部分设置在激光的光路的一部分中，透明树脂使一部分激光被反射或折射以供应到感光器件，感光器件输出一个检测信号对应于激光的一部分，并且在接收到来自感光器件的检测信号时，电路装置执行信号处理并产生输出。

15. 发明授权

US4607359A Optical recording/reproducing apparatus 失效
标题翻译：光记录/重放装置
公开(公告)号：US4607359A
公开(公告)日：1986-08-19
申请号：US575045
申请日：1984-01-30
申请人： Nobuhide Matsubayashi , Kiichi Kato , Masaharu Sakamoto
发明人： Nobuhide Matsubayashi , Kiichi Kato , Masaharu Sakamoto
IPC分类号： G11B7/135 , G11B7/09 , G11B7/12 , G11B7/125 , G11B7/1359 , G11B7/1378 , G11B7/1381 , G11B7/08
CPC分类号： G11B7/0903 , G11B7/1359 , G11B7/1378 , G11B7/1381
摘要： An optical recording/reproducing apparatus has a beam emitting device adapted to emit at least two light beams in directions at a minute angle to each other. The light beams are condensed by a condensing member onto slightly separated two points on a disk and reflected by the disk. The light beams from the disk are polarized to a prism by a polarizing device. The prism refracts the light beams from the polarizing device, thereby increasing the relative angle between the light beams. The refracted light beams are converged by a converging lens on a detector.
摘要翻译：光学记录/再现装置具有适于在至少两个彼此以小角度的方向发射的光束的发射装置。光束被聚光部件聚集在盘上略微分开的两个点上，并被光盘反射。来自盘的光束通过偏振装置偏振到棱镜。棱镜折射来自偏振装置的光束，从而增加光束之间的相对角度。折射光束被会聚透镜会聚在检测器上。

16. 发明授权

US4513408A Error detecting system of video/audio disc player 失效
标题翻译：视频/音频光盘播放器错误检测系统
公开(公告)号：US4513408A
公开(公告)日：1985-04-23
申请号：US384244
申请日：1982-06-02
申请人： Susumu Nomura , Katsuharu Sato
发明人： Susumu Nomura , Katsuharu Sato
IPC分类号： G06K7/015 , G01S17/88 , G02B7/28 , G11B7/09 , G11B7/12 , G11B7/133 , G11B7/1359 , G11B7/1381 , G11B7/00
CPC分类号： G11B7/1359 , G01S17/88 , G11B7/0916 , G11B7/133 , G11B7/1381
摘要： In a video and/or audio disc information reproducing apparatus in which the video and/or audio information carried on a video and/or audio disc is picked up with a beam of light incident on the disc to trace the record track on the disc, an error detecting system comprising optical means to emit a beam of light for tracing the record track and producing a signal-carrying beam of light carrying signals picked up from the record track, beam-splitting means to split the signal-carrying beam into two component beams, light-sensitive transducer means responsive to the component beams and having at least four discrete light-sensitive surfaces separate from one another across a first junction line parallel with a line tangent to the record track and a second junction line parallel with a line perpendicular to the record track, the transducer means being operative to produce a first error signal representative of the difference between the intensities of light incident on the light-sensitive surfaces separate from each other across the first junction line and a second error representative of the difference between the intensities of the light respectively incident on the light-sensitive surfaces separate across the second junction line.
摘要翻译：在视频和/或音频盘信息再现装置中，其中以在光盘上入射的光束拾取在视频和/或音频盘上携带的视频和/或音频信息以跟踪盘上的记录轨道，误差检测系统，包括光学装置，用于发射用于跟踪记录轨道的光束，并产生携带从记录轨道拾取的信号的携带光的光束，分束装置将信号载体束分成两部分光束传感器装置，其响应于分量光束并且具有至少四个离散的光敏表面，跨越与与记录轨道相切的线平行的第一连接线，以及与垂直线垂直的第二连接线到记录轨道，换能器装置可操作以产生表示入射在感光体上的光的强度之间的差异的第一误差信号在第一连接线上彼此分开的表面和表示分别入射在穿过第二连接线的光敏表面上的光的强度之间的差异的第二误差。

17. 发明授权

US09841731B2 Holographic memory device 有权
公开(公告)号：US09841731B2
公开(公告)日：2017-12-12
申请号：US14816441
申请日：2015-08-03
申请人： Hitachi-LG Data Storage, Inc.
发明人： Takeru Utsugi , Kazuyoshi Yamazaki
IPC分类号： G03H1/26 , G02B5/32 , G02B27/09 , G11B7/0065 , G11B7/085 , G11B7/1353 , G11B7/1359
CPC分类号： G03H1/265 , G02B5/32 , G02B27/0927 , G02B27/0944 , G03H2223/18 , G03H2223/23 , G11B7/0065 , G11B7/08564 , G11B7/1353 , G11B7/1359
摘要： To reduce an influence of stray light and stably record/reproduce high-quality data in holographic recording/reproduction. A holographic memory device includes an optical system that guides a reference beam to an optical information recording medium at a desired angle of incidence, a control part that controls the angle of incidence of the reference beam generated in the optical system, and a lens part that images the reference beam in a desired position of the optical information recording medium. Further, at least a first light beam at a first angle and a second light beam at a second angle different from the first angle are output from the optical element, and the optical element is provided so that the first light beam may propagate within an effective diameter of the lens part and the second light beam may propagate to an outside of the effective diameter of the lens part.

18. 发明授权

US4650294A Objective lens apparatus 失效
标题翻译：物镜设备
公开(公告)号：US4650294A
公开(公告)日：1987-03-17
申请号：US581663
申请日：1984-02-21
申请人： Ikuo Nanno , Yasuaki Morimoto , Seiji Hoshi , Shinji Wakui , Hideo Hoshi
发明人： Ikuo Nanno , Yasuaki Morimoto , Seiji Hoshi , Shinji Wakui , Hideo Hoshi
IPC分类号： G11B7/09 , G11B7/135 , G11B7/1359 , G02B7/04 , G02B7/18
CPC分类号： G11B7/1359 , G11B7/0925
摘要： An objective lens apparatus for an optical disc player comprises an objective lens holder rotatable about a center axis, an objective lens carried by the holder at a location spaced from the center axis, an optical member, a magnetic flux generating member for generating magnetic flux, and tracking and focusing coils interacting with the magnetic flux for effecting tracking and focusing adjustments of the objective lens. The optical member rotates simultaneously with the lens holder and leads light which is incident along the center axis to the objective lens in a direction parallel to the center axis thereby eliminating optical modulation of the light caused by rotation of the lens holder in the tracking direction.
摘要翻译：一种用于光盘播放器的物镜装置，包括可围绕中心轴旋转的物镜支架，由保持器在与中心轴线隔开的位置承载的物镜，光学构件，用于产生磁通量的磁通量产生构件，以及与磁通相互作用的跟踪和聚焦线圈，用于实现物镜的跟踪和聚焦调整。光学构件与透镜保持器同时旋转，并且沿与中心轴平行的方向引导沿着中心轴入射到物镜的光，从而消除由透镜架沿跟踪方向旋转引起的光的光学调制。

19. 发明授权

US4233502A Opto-electronic focussing error detection arrangement 失效
标题翻译：光电聚焦误差检测装置
公开(公告)号：US4233502A
公开(公告)日：1980-11-11
申请号：US925432
申请日：1978-07-17
申请人： Gijsbertus Bouwhuis , Teunis J. Hazerdonk
发明人： Gijsbertus Bouwhuis , Teunis J. Hazerdonk
IPC分类号： G02B7/34 , G02B7/28 , G11B7/09 , G11B7/1359 , G11B7/1381
CPC分类号： G11B7/1381 , G02B7/28 , G11B7/0908 , G11B7/0916 , G11B7/1359
摘要： An opto-electronic focussing-error detection arrangement is described for the detection of a deviation between a radiation reflecting surface and the plane of focussing of an objective system. In the path of the beam which is reflected by the surface a beam-splitting element is disposed and behind said element two radiation-sensitive detectors are arranged which are each associated with one of the subbeams formed by the beam-splitting element. The detectors are grating-shaped detectors and are effectively divided into two detector sections by selection devices, the bounding line being adjustable. A focussing error signal is obtained which is highly independent of a positional error of the radiation-sensitive detection system relative to the beam axis.
摘要翻译：描述了用于检测辐射反射表面和物镜系统的聚焦平面之间的偏差的光电聚焦误差检测装置。在由表面反射的光束的路径中设置有分束元件并且在所述元件之后，布置两个辐射敏感检测器，每个辐射敏感检测器与由分束元件形成的一个子光束相关联。检测器是光栅形检测器，并且通过选择装置有效地分成两个检测器部分，边界线是可调节的。获得了与辐射敏感检测系统相对于光束轴的位置误差非常独立的聚焦误差信号。

20. 发明授权

US3969576A Apparatus for reading a record carrier with an optical information structure 失效
标题翻译：用于读取具有光学信息结构的记录载体的装置
公开(公告)号：US3969576A
公开(公告)日：1976-07-13
申请号：US543111
申请日：1975-01-22
申请人： Lieuwe Boonstra , Antonius Adrianus Marius VAN Alem
发明人： Lieuwe Boonstra , Antonius Adrianus Marius VAN Alem
IPC分类号： G02B7/28 , G02B27/40 , G11B7/09 , G11B7/1356 , G11B7/1359 , G11B7/1381 , H04N5/76 , G11B7/12 , G11B17/00
CPC分类号： G11B7/1356 , G02B27/40 , G11B7/0908 , G11B7/0916 , G11B7/1359 , G11B7/1381
摘要： In an apparatus for reading a record carrier on which information is stored in an optically readable structure, the radiation which is supplied by the radiation source is split into a read beam and an auxiliary beam for determining the focussing of the read beam on the record carrier. Said auxiliary beam is intercepted by two radiation-sensitive detectors. By disposing a radiation-absorbing knife between the radiation source and the Wollaston prism a part of the auxiliary beam is blocked. Thus, an accurate indication can be obtained of the magnitude and the direction of a focussing error.
摘要翻译：在用于读取以光学可读结构存储信息的记录载体的装置中，由辐射源提供的辐射被分成读取光束和辅助光束，用于确定读取光束在记录载体上的聚焦。所述辅助光束被两个辐射敏感检测器截获。通过在辐射源和Wollaston棱镜之间设置放射线吸收刀，辅助光束的一部分被阻挡。因此，可以获得聚焦误差的大小和方向的精确指示。

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