公开(公告)号：US07519979B2

公开(公告)日：2009-04-14

申请号：US10588113

申请日：2005-06-30

申请人： Osamu Mizuno ,  Hideki Aikoh ,  Takeharu Yamamoto

发明人： Osamu Mizuno ,  Hideki Aikoh ,  Takeharu Yamamoto

IPC分类号： G11B7/00

CPC分类号： G11B7/1376 ,  G11B7/0937 ,  G11B7/0946 ,  G11B7/0948 ,  G11B7/13927

摘要： An aberration correction lens 4 is disposed in a space between a laser light source 3 and an objective lens 5, and a lens holder 10 is frictionally coupled to a drive shaft 7 via a frictional holding body 8. A piezoelectric element 6 is provided to one end of the drive shaft 7. The piezoelectric element 6 extends and contracts in response to an applied voltage. The lens holder 10 is moved relatively with respect to the drive shaft 7 in the drive shaft direction by varying a change rate when the applied voltage to the piezoelectric element 6 is increased and decreased.

摘要翻译： 像差校正透镜4设置在激光光源3和物镜5之间的空间中，透镜保持器10通过摩擦保持体8摩擦地联接到驱动轴7.压电元件6设置在一个 驱动轴7的端部。压电元件6响应于所施加的电压而延伸和收缩。 当对压电元件6的施加电压增加和减小时，通过改变变化率，透镜架10相对于驱动轴7在驱动轴方向上相对移动。

公开(公告)号：US07366072B2

公开(公告)日：2008-04-29

申请号：US11005071

申请日：2004-12-06

申请人： Fumitomo Yamasaki ,  Takuya Wada ,  Hideki Aikoh

发明人： Fumitomo Yamasaki ,  Takuya Wada ,  Hideki Aikoh

IPC分类号： G11B7/00

CPC分类号： G11B21/02 ,  G11B7/08 ,  G11B7/12 ,  G11B2007/0006

摘要： In an optical head for performing the reproduction or recording of information for two or more types of different optical disks, the damage caused to an optical disk or an objective lens by collision between the optical disk and the objective lens is avoided. An optical heads device for reproducing or recording two or more types of information recording mediums different from each other comprises a first optical system, a second optical system, and a control unit for avoiding the collision between an optical disk and a second objective lens when a first optical system is in operation.

摘要翻译： 在用于执行用于两种或更多种类型的不同光盘的信息的再现或记录的光学头中，避免了由光盘和物镜之间的碰撞对光盘或物镜造成的损坏。 用于再现或记录彼此不同的两种或更多种类型的信息记录介质的光学头装置包括：第一光学系统，第二光学系统和控制单元，用于避免当光盘和第二物镜之间的碰撞时 第一光学系统正在运行。

公开(公告)号：US07349320B2

公开(公告)日：2008-03-25

申请号：US11059700

申请日：2005-02-17

申请人： Makoto Takashima ,  Hideki Aikoh

发明人： Makoto Takashima ,  Hideki Aikoh

IPC分类号： G11B7/125

CPC分类号： G11B7/139 ,  G11B7/1263 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1356 ,  G11B2007/0006

摘要： An optical-disk drive device is provided which is capable of executing recording or reproduction at a plurality of numerical apertures and keeping constant the quantity of light which is emitted by a light-emitting element. This optical-disk drive device includes: light-emitting elements; a beam splitter which allows a luminous flux that is emitted by each of these light-emitting elements to branch off to a first luminous flux and a second luminous flux; a photo-detector which detects a front light that has branched off at the beam splitter; an aperture restriction member; and a controller which controls the quantity of light that is emitted by each of the light-emitting elements, using a signal which is obtained by the photo-detector, in which the photo-detector has a circular first detection area in which an inner luminous flux of the first luminous flux is received, and a ring-shaped second detection area in which an outer luminous flux of the first luminous flux is received; and the controller controls the quantity of light, at the time of a large numerical aperture, based on the quantity of light which is received in the first detection area and the second detection area, and controls the quantity of light, at the time of a small numerical aperture, based on the quantity of light which is received in the first detection area.

摘要翻译： 提供了能够以多个数值孔径执行记录或再现并保持由发光元件发射的光量恒定的光盘驱动装置。 该光盘驱动装置包括：发光元件; 分束器，其允许由这些发光元件中的每一个发射的光束分支到第一光束和第二光束; 光检测器，其检测在分束器处分支的前光; 孔限制构件; 以及控制器，其使用由光检测器获得的信号来控制由每个发光元件发射的光量，其中光检测器具有圆形的第一检测区域，其中内部发光 接收第一光通量的磁通，接收第一光通量的外光束的环状的第二检测区域; 并且所述控制器在大数值孔径时基于在所述第一检测区域和所述第二检测区域中接收到的光量来控制所述光量，并且控制所述光量的量 基于在第一检测区域中接收的光量的小数值孔径。

公开(公告)号：US07327935B2

公开(公告)日：2008-02-05

申请号：US10482492

申请日：2002-09-17

申请人： Fumitomo Yamasaki ,  Takao Hayashi ,  Hideki Aikoh

发明人： Fumitomo Yamasaki ,  Takao Hayashi ,  Hideki Aikoh

IPC分类号： H04N5/91 ,  H04N7/167 ,  H04N9/73 ,  H04L9/00

CPC分类号： H04N1/00347 ,  G11B20/00086 ,  G11B20/10 ,  H04N1/00251 ,  H04N1/2307 ,  H04N1/2376 ,  H04N5/765 ,  H04N5/772 ,  H04N5/907 ,  H04N5/913 ,  H04N5/9201 ,  H04N2005/91328 ,  H04N2201/0084

摘要： A first information recorder comprises a limited number-of-times of copying information setting unit for setting information on the limited number-of-times of copying electronic data, a first limited number-of-times of copying information updating unit for reading out the electronic data from a first information recording medium containing electronic data set with limited number of times of copying information by the limited number-of-times of copying information setting unit and updating the limited number-of-times of copying information set with respect to the electronic data, and a first transmitter for transmitting electronic data whose limited number-of-times of copying information is updated by the first limited number of times of copying information updating unit. A second information recorder comprises a second receiver for receiving electronic data transmitted from the first transmitter, a second limited number-of-times of copying information updating unit for reading out the electronic data from a second information containing medium recording the electronic data and updating the limited number-of-times of copying information set with respect to the electronic data, and a second transmitter for transmitting electronic data whose limited number-of-times of copying information is updated by the second limited number-of-times of copying information updating unit.

摘要翻译： 第一信息记录器包括有限数量的复制信息设置单元，用于设置关于复制电子数据的有限次数的信息，第一有限次数的复制信息更新单元，用于读出 来自第一信息记录介质的电子数据，该第一信息记录介质包含复制信息的有限次数的拷贝信息的有限次数的电子数据集，并且更新相对于该复制信息设置单元设置的复制信息的有限次数 电子数据，以及第一发送器，用于发送其复制信息的有限次数被复制信息更新单元的第一有限次数更新的电子数据。 第二信息记录器包括用于接收从第一发送器发送的电子数据的第二接收器，第二有限数量的复制信息更新单元，用于从包含记录电子数据的介质的第二信息读出电子数据，并更新 复制信息复制信息数量有限的复制信息次数有限，第二发送器用于发送复制信息的有限次数被复制信息更新的次数有限的第二发送器 单元。

公开(公告)号：US07196975B1

公开(公告)日：2007-03-27

申请号：US10089409

申请日：2000-11-06

申请人： Hideki Aikoh ,  Tohru Nakamura

发明人： Hideki Aikoh ,  Tohru Nakamura

IPC分类号： G11B11/00

CPC分类号： G11B11/10584 ,  G11B11/10558 ,  G11B11/1058 ,  G11B11/10597

摘要： On a pit information surface (22d) of a read-only optical disk (22), a protective layer (22f) suited for a floating-type or a sliding-type magnetic head (3) used for a magnetic field modulation type magneto-optical disk is formed. A reproducing operation with respect to the optical disk (22) is performed while allowing the magnetic head (3) to slide on the protective layer (22f). Accordingly, a magnetic head does not need to be separated from a disk in reproduction. Thus, an optical disk device can be manufactured at lower cost and reduced in size, and a high-speed seek can be realized. Commonality of a disk cartridge (32) with the magnetic field modulation type magneto-optical disk also can be achieved. An optical disk system that is user-friendly thus can be obtained.

摘要翻译： 在只读光盘（22）的凹坑信息表面（22d）上，适用于用于磁场调制型的浮动型或滑动型磁头（3）的保护层（22f） 形成磁光盘。 在允许磁头（3）在保护层（22f）上滑动的同时执行相对于光盘（22）的再现操作。 因此，磁头在再现时不需要与盘分离。 因此，可以以较低的成本制造光盘装置，并减小尺寸，并且可以实现高速搜索。 也可以实现具有磁场调制型磁光盘的盘盒（32）的通用性。 因此可以获得用户友好的光盘系统。

公开(公告)号：US20070064551A1

公开(公告)日：2007-03-22

申请号：US10579776

申请日：2004-12-02

申请人： Osamu Mizuno ,  Tohru Nakamura ,  Hideki Aikoh ,  Takao Hayashi ,  Takuya Wada

发明人： Osamu Mizuno ,  Tohru Nakamura ,  Hideki Aikoh ,  Takao Hayashi ,  Takuya Wada

IPC分类号： G11B7/00

CPC分类号： G11B7/085 ,  G11B7/08576

摘要： An optical disc apparatus includes a withdrawal means for moving an objective lens (32) to a position distant from an optical disc (1) during an inactive duration of intermittent recording or reproducing operation. A means for regulating or fixing the objective lens (32) at the position distant from the optical disc (1) is further provided. Thus, even in a noncontrolled state during the inactive duration, it is possible to prevent collision of the objective lens (32) with the optical disc (1). As a result, both power saving and safety of the apparatus can be attained.

摘要翻译： 一种光盘装置，包括一个取出装置，用于在间歇的记录或再现操作的非活动时间期间将物镜（32）移动到远离光盘（1）的位置。 还提供用于在离开光盘（1）的位置处调节或固定物镜（32）的装置。 因此，即使在非活动持续时间的非受控状态下，也可以防止物镜（32）与光盘（1）的碰撞。 结果，可以实现装置的节电和安全。

公开(公告)号：US5146445A

公开(公告)日：1992-09-08

申请号：US559912

申请日：1990-07-30

申请人： Tohru Nakamura ,  Hideki Aikoh ,  Masayuki Shinoda ,  Noboru Kikuchi

发明人： Tohru Nakamura ,  Hideki Aikoh ,  Masayuki Shinoda ,  Noboru Kikuchi

IPC分类号： G11B7/09 ,  G11B7/13

CPC分类号： G11B7/133 ,  G11B7/0901 ,  G11B7/094

摘要： An optical head equipped with a tracking error detector to obtain a tracking error signal for tracking servo. The detector includes a photodetector having a light-detecting region on which a light spot with a predetermined diameter is formed by a reflected light beam from a recording medium. The region is divided by a first division line into two which are further divided by second and third division lines so as to form first to fourth subregions, the first and second subregions being adjacent to each other with the first division line being interposed therebetween, the third subregion being adjacent to the first subregion, and the fourth subregion being adjacent to the second subregion. The separation between the second and third division lines is determined so that the sum of the light receiving quantities of the first and fourth subregions is substantially equal to the sum of the light receiving quantities of the second and third subregions when the objective lens is shifted from its neutral position. Electric signals produced in correspondance with the light receiving quantities are supplied to a differential amplifier to take a difference between a sum signal of the signals due to the first and fourth subregions and a sum signal of the signals due to the second and third subregions.

公开(公告)号：US08208359B2

公开(公告)日：2012-06-26

申请号：US12517676

申请日：2007-12-04

申请人： Hideki Aikoh ,  Makoto Takashima ,  Eishin Mori ,  Kousei Sano ,  Joji Anzai ,  Kenichi Shinotani

发明人： Hideki Aikoh ,  Makoto Takashima ,  Eishin Mori ,  Kousei Sano ,  Joji Anzai ,  Kenichi Shinotani

IPC分类号： G02B1/00 ,  G11B7/135

CPC分类号： H01L31/0203 ,  C08G77/045 ,  C08G77/12 ,  C08G77/20 ,  G02B1/043 ,  G11B7/1378 ,  G11B7/1381 ,  H01L24/73 ,  H01L31/02325 ,  H01L2224/32245 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/73265 ,  H01L2924/14 ,  H01L2924/16195 ,  H01L2924/181 ,  C08L83/04 ,  H01L2924/00014 ,  H01L2924/00012 ,  H01L2924/00

摘要： An object of the invention is to provide an optical element for use in an optical information recording and reproducing device or a like device for recording or reproducing information with respect to an information recording medium using laser light, wherein the optical element is a resin optical element capable of suppressing lowering in transmittance due to deterioration by irradiation of light having a high energy density, and maintaining a high transmittance for a long time. To realize the above object, used is an optical element made of a silicon resin cured material obtained by subjecting a silicon resin composition containing a silsesquioxane compound to a curing treatment.

摘要翻译： 本发明的目的是提供一种用于光信息记录和再现装置或类似装置中用于使用激光对信息记录介质进行信息记录或再现的光学元件，其中光学元件是树脂光学元件 能够抑制由于能量密度高的光的照射而导致的透光率降低，并且能够长期保持高透射率。 为了实现上述目的，使用由含有倍半硅氧烷化合物的硅树脂组合物进行固化处理得到的硅树脂固化物制成的光学元件。

公开(公告)号：US20100254236A1

公开(公告)日：2010-10-07

申请号：US12602718

申请日：2008-05-29

申请人： Eishin Mori ,  Kousei Sano ,  Joji Anzai ,  Hideki Aikoh

发明人： Eishin Mori ,  Kousei Sano ,  Joji Anzai ,  Hideki Aikoh

IPC分类号： G11B20/10 ,  G11B7/135

CPC分类号： G11B7/13925 ,  G11B7/1376 ,  G11B2007/0006 ,  G11B2007/0013

摘要： An object of the invention is to suppress an influence of a wavefront aberration which is generated at the time of correcting a third-order spherical aberration, and realize satisfactory information recording and/or reproducing. A collimator lens 4 corrects a third-order spherical aberration which is generated depending on the thickness of a light transmissive layer from a surface of a first optical information recording medium 30, corresponding to an optimal substrate thickness of a first objective lens 6, to an intended information recording surface, assuming that the light transmissive layer thickness of the first optical information recording medium 30 which minimizes a residual third-order spherical aberration at the time of incidence of parallel light into the first objective lens 6 is defined as the optimal substrate thickness of the first objective lens 6. The optimal substrate thickness of the first objective lens 6 is defined in such a manner that a variation of a wavefront aberration which is generated on the information recording surface of the first optical information recording medium 30 farthest from the first objective lens 6 at the time of correcting the third-order spherical aberration, and a variation of a wavefront aberration which is generated on the information recording surface of the first optical information recording medium 30 closest to the first objective lens 6 at the time of correcting the third-order spherical aberration are set equal to each other.

摘要翻译： 本发明的目的是抑制在校正三次球面像差时产生的波前像差的影响，并且实现满意的信息记录和/或再现。 准直透镜4将与第一光学信息记录介质30的表面相对应的透光层的厚度相应于第一物镜6的最佳基板厚度的三次球面像差校正为 假设将平行光入射到第一物镜6中的残余三阶球面像差最小化的第一光学信息记录介质30的透光层厚度定义为最佳基板厚度 第一物镜6的最佳基板厚度被定义为使得在第一光信息记录介质30的信息记录表面上产生的波前像差的变化最远离第一物镜6的第一物镜6。 在校正三次球面像差时的物镜6，以及a 在校正三次球面像差时在最靠近第一物镜6的第一光学信息记录介质30的信息记录表面上产生的波前像差的变化被设置为彼此相等。

公开(公告)号：US20100220578A1

公开(公告)日：2010-09-02

申请号：US12159425

申请日：2006-12-27

申请人： Fumitomo Yamasaki ,  Katsuhiko Hayashi ,  Sadao Mizuno ,  Hideki Aikoh

发明人： Fumitomo Yamasaki ,  Katsuhiko Hayashi ,  Sadao Mizuno ,  Hideki Aikoh

IPC分类号： G11B7/135 ,  G02B11/02 ,  G02B13/18

CPC分类号： G02B9/10 ,  G02B3/08 ,  G02B13/18 ,  G11B7/1275 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： Provides an objective lens, an optical head and an optical disc apparatus (drive) capable of compensating for various types of aberrations including wavelength changes for a plurality of types of optical discs including high density optical discs, DVDs and CDs with a good wavelength dispersion compensation ability and thus capable of providing good recording or reproduction characteristics.The objective lens according to the present invention includes a first lens and a second lens substantially in close contact with each other such that optical axes thereof match each other, and acts as a convex lens as a whole. Each lens includes a central portion including the optical axis and a peripheral portion located in a periphery of the central portion. The central portion of the first lens acts as a convex lens; and the central portion of the second lens acts as a concave lens. Where the refractive index of the first lens at d line (wavelength: 587.56 nm) is nd1, the Abbe constant of the first lens represented using the refractive indices at d line, F line (wavelength: 486.13 nm) and C line (wavelength: 656.27 nm) is νd1, the refractive index of the second lens at d line is nd2, and the Abbe constant of the second lens represented using the refractive indices at d line, F line and C line is νd2, the objective lens fulfills nd1>nd2 and νd1>νd2.

摘要翻译： 提供能够补偿包括具有良好的波长色散补偿的高密度光盘，DVD和CD的多种类型的光盘的波长变化的各种像差的物镜，光头和光盘装置（驱动器） 因此能够提供良好的记录或再现特性。 根据本发明的物镜包括基本上彼此紧密接触的第一透镜和第二透镜，使得其光轴彼此匹配，并且作为整体起凸透镜的作用。 每个透镜包括包括光轴的中心部分和位于中心部分的周边的周边部分。 第一透镜的中心部分用作凸透镜; 并且第二透镜的中心部分用作凹透镜。 在d线（波长：587.56nm）处的第一透镜的折射率为nd1的情况下，使用在d线，F线（波长：486.13nm）和C线（波长：48nm）处的折射率表示的第一透镜的阿贝常数 656.27nm）是d1，d线的第二透镜的折射率为nd2，使用d线，F线和C线的折射率表示的第二透镜的阿贝常数为d2，目标 镜头满足nd1> nd2和＆ngr; d1>＆ngr; d2。