公开(公告)号：US20110199886A1

公开(公告)日：2011-08-18

申请号：US13023433

申请日：2011-02-08

申请人： Keita Takanashi ,  Noriyuki Hiramatsu ,  Toru Kajino

发明人： Keita Takanashi ,  Noriyuki Hiramatsu ,  Toru Kajino

IPC分类号： G11B7/125

CPC分类号： G11B7/126 ,  G11B2007/0006

摘要： An optical pickup apparatus includes: a circuit board; a laser diode mounted on one face of the circuit board; and a high-frequency superimposition integrated circuit arranged on the other face of the circuit board, the high-frequency superimposition integrated circuit including a high-frequency signal generation circuit, the circuit board having an area greater than or equal to an area occupied by a lead pin of the laser diode and a region smaller than or equal to twice a region where the laser diode is mounted, a high-frequency signal generated from the high-frequency signal generation circuit being superimposed on a driving signal to be supplied to the laser diode, in order to take a measure against noise caused by return light of the laser diode.

摘要翻译： 一种光学拾取装置，包括：电路板; 安装在电路板的一个面上的激光二极管; 以及布置在所述电路板的另一面上的高频叠加集成电路，所述高频叠加集成电路包括高频信号发生电路，所述电路板的面积大于或等于由 激光二极管的引脚和小于或等于安装激光二极管的区域的两倍的区域，从高频信号产生电路产生的高频信号被叠加在驱动信号上以被提供给激光器 二极管，以便对抗由激光二极管的返回光引起的噪声的措施。

公开(公告)号：US08000188B2

公开(公告)日：2011-08-16

申请号：US12639871

申请日：2009-12-16

申请人： Minoru Sato

发明人： Minoru Sato

IPC分类号： G11B7/00

CPC分类号： G11B7/0903 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006

摘要： An optical pickup apparatus comprising at least: a diffraction grating configured to split first wavelength light into at least a first main beam and first sub-beam, and to split second wavelength light into at least a second main beam and second sub-beam, the diffraction grating including a diffraction surface portion corresponding to the second wavelength light; and a photodetector including a first main light-receiving unit configured to be applied with the first main beam, a first sub-light-receiving unit configured to be applied with the first sub-beam, a second main light-receiving unit configured to be applied with the second main beam, and a second sub-light-receiving unit configured to be applied with the second sub-beam, a distance between the first main light-receiving unit and first sub-light-receiving unit being changed relative to a standardized distance between the first main light-receiving unit and first sub-light-receiving unit.

摘要翻译： 一种光学拾取装置，至少包括：衍射光栅，被配置为将第一波长光分成至少第一主光束和第一子光束，并将第二波长光分裂成至少第二主光束和第二子光束， 衍射光栅，包括对应于第二波长光的衍射面部分; 以及光电检测器，其包括构造成施加有第一主光束的第一主光接收单元，被配置为施加有第一子光束的第一副光接收单元，被配置为 以及第二子光接收单元，被配置为施加第二子光束，第一主光接收单元和第一子光接收单元之间的距离相对于第二子光束接收单元被改变， 第一主光接收单元与第一子光接收单元之间的标准距离。

公开(公告)号：US20110194397A1

公开(公告)日：2011-08-11

申请号：US13020557

申请日：2011-02-03

申请人： Yasuo Ueda ,  Yoshiyuki Hashimoto ,  Noriaki Terahara ,  Toshiaki Takasu ,  Toshiyasu Tanaka

发明人： Yasuo Ueda ,  Yoshiyuki Hashimoto ,  Noriaki Terahara ,  Toshiaki Takasu ,  Toshiyasu Tanaka

IPC分类号： G11B7/135

CPC分类号： G11B7/1374 ,  G11B7/1365 ,  G11B7/1395 ,  G11B2007/0006

摘要： An optical pickup device has a DVD/CD laser diode for emitting a DVD/CD laser beam as linear polarized light, and a BD laser diode for emitting a BD laser beam. The optical pickup device has a dichroic mirror that regularly reflects a part of the DVD/CD laser beam, transmits a part of the DVD/CD laser beam, and transmits return light of the BD laser beam. The dichroic mirror is formed so that a product of reflectance of outward light of the DVD/CD laser beam and transmittance of return light of the DVD/CD laser beam becomes 20% or more to 25% or less. A light receiving element receives the return light of the DVD/CD laser beam transmitted through the dichroic mirror or the return light of the BD laser beam transmitted through the dichroic mirror.

摘要翻译： 光拾取装置具有用于发射DVD / CD激光束作为线性偏振光的DVD / CD激光二极管和用于发射BD激光束的BD激光二极管。 光拾取装置具有规则地反映DVD / CD激光束的一部分的二向色镜，透射DVD / CD激光束的一部分，并透射BD激光束的返回光。 分色镜被形成为使得DVD / CD激光束的向外光的反射率与DVD / CD激光束的返回光的透射率的乘积为20％以上至25％以下。 光接收元件接收通过分色镜透射的DVD / CD激光束的返回光或透过分色镜的BD激光束的返回光。

公开(公告)号：US07986607B2

公开(公告)日：2011-07-26

申请号：US12723777

申请日：2010-03-15

申请人： Jun-ichi Asada ,  Kazuo Momoo

发明人： Jun-ichi Asada ,  Kazuo Momoo

IPC分类号： G11B7/00

CPC分类号： G11B7/1367 ,  G11B7/1275 ,  G11B2007/0006

摘要： An optical pickup includes a wave plate on an optical path to be followed by every light beam emitted from three light sources (with wavelengths λ1, λ2 and λ3, respectively) both on their way toward an optical disc and back from the disc toward a photodetector. The wave plate has two layers with different retardations and different optic axis directions. The sum of the retardations of the first and second layers is defined to be approximately 5/4λ1, 3/4λ2 and 1/2λ3 to the light beams with the wavelengths λ1, λ2 and λ3.

摘要翻译： 光拾取器包括在光路上的波片，每个光束在三个光源（分别具有波长λ1，λ2和λ3）的两个光朝向光盘的方向发射，并且从光盘朝向光电检测器 。 波片具有不同延迟和不同光轴方向的两层。 第一层和第二层的延迟的总和被定义为具有波长λ1，λ2和λ3的光束的大约5 /4λ1,3/4λ2和1 /2λ3。

公开(公告)号：US07986606B2

公开(公告)日：2011-07-26

申请号：US11686131

申请日：2007-03-14

申请人： Nobuhiko Takeshita ,  Tomoki Gunjima ,  Kara Yoshida

发明人： Nobuhiko Takeshita ,  Tomoki Gunjima ,  Kara Yoshida

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G02B5/3083 ,  G11B7/1365 ,  G11B2007/0006

摘要： An optical head device having a broadband phase plate of transforming at least three linearly polarized light beams having different wavelengths into circularly polarized light beams, is obtained.A broadband phase plate comprising two phase plates 9A and 9B laminated with e.g. an adhesive agent so that their optical axes are crossed, wherein provided that wavelengths of linearly polarized incident light beams are λ1, λ2 and λ3 (λ1

摘要翻译： 获得具有将至少三个具有不同波长的线偏振光转换成圆偏振光束的宽带相位板的光头装置。 宽带相位板包括两个相位板9A和9B， 粘合剂使得它们的光轴交叉，其中如果线性偏振的入射光束的波长为λ1，λ2和λ3（λ1<λ2<λ3），则两个相位板中的至少一个或两个具有这样的相位差 R（λ1）/ R（λ3）之间的比值R（λ2）/ R（λ3）和波长的延迟值之间的比率R（λ2）/ R（λ3）小于1，R（λ1）/ R（λ3） λ2）/ R（λ3）被集成在光学头装置中。

公开(公告)号：US07983130B2

公开(公告)日：2011-07-19

申请号：US12479693

申请日：2009-06-05

申请人： Tatsuya Murata

发明人： Tatsuya Murata

IPC分类号： G11B7/00

CPC分类号： G11B17/10 ,  B41J3/4071 ,  G11B23/40 ,  G11B2007/0006

摘要： An optical disk processing system having a recording unit and a printing unit is provided. An optical disk processing system comprises a printing unit and a recording unit. An optical disk is driven with a low torque and then with a high torque. Based on reaching times until target rotational speeds are reached when the optical disk is driven with the low torque and the high torque, a type of the optical disk is judged. Loading of a plurality of optical disks is detected when the judgment results for low torque and for high torque do not match.

摘要翻译： 提供具有记录单元和打印单元的光盘处理系统。 光盘处理系统包括打印单元和记录单元。 光盘以低扭矩驱动，然后以高扭矩驱动。 当以低转矩和高转矩驱动光盘时，在达到目标转速达到的时间之前，判断光盘类型。 当低扭矩和高扭矩的判断结果不匹配时，检测到多个光盘的加载。

公开(公告)号：US07979872B2

公开(公告)日：2011-07-12

申请号：US12022847

申请日：2008-01-30

申请人： Akihiro Tanaka

发明人： Akihiro Tanaka

IPC分类号： G11B7/09

CPC分类号： G11B7/0935 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13925 ,  G11B2007/0006

摘要： A disclosed lens actuator includes: an objective lens condensing a light beam on an optical storage medium; a diffractive element providing compatibility with plural types of optical storage media relative to light sources of plural different wavelengths; and a lens holder including the objective lens and diffractive element in an opposing manner. The objective lens is driven with the lens holder in at least a focusing direction and tracking direction relative to the optical storage medium. At least three protrusions are set on the lens holder in directions orthogonal to an optical axis of the objective lens. Another disclosed lens actuator includes: an objective lens and a drive coil disposed on a lens holder, wherein a diffractive element is disposed on the lens holder via an inertia weight including a metallic material and disposed so as to face the objective lens.

摘要翻译： 公开的透镜致动器包括：将光束聚光在光学存储介质上的物镜; 提供与多种类型的光学存储介质相对于多种不同波长的光源的兼容性的衍射元件; 以及以相对的方式包括物镜和衍射元件的透镜架。 物镜相对于光存储介质至少在聚焦方向和跟踪方向上由透镜架驱动。 至少三个凸起在与物镜的光轴正交的方向上设置在透镜架上。 另一公开的透镜致动器包括：物镜和设置在透镜保持器上的驱动线圈，其中衍射元件经由包括金属材料的惯性重量设置在透镜保持器上并且被设置为面对物镜。

公开(公告)号：US20110149709A1

公开(公告)日：2011-06-23

申请号：US12973757

申请日：2010-12-20

申请人： Tohru Hotta ,  Ryoichi Kawasaki

发明人： Tohru Hotta ,  Ryoichi Kawasaki

IPC分类号： G11B7/125

CPC分类号： G11B7/1395 ,  G11B7/1275 ,  G11B2007/0006

摘要： An optical-pickup apparatus includes: a three-wavelength-laser diode including first-, second-, and third-laser elements to emit first-, second-, and third laser beams having first, second, and third wavelengths, respectively, the three laser elements housed in the same case; an objective lens to focus the three laser beams onto first- to third-optical-disc-signal-recording layers, respectively; a first photodetector to be irradiated with first-return light reflected from the first-optical-disc-signal-recording layer, a second photodetector to be irradiated with second- and third-return lights respectively reflected from the second- and third-optical-disc-signal-recording layers; a polarizing-beam splitter to reflect the three laser beams toward the lens, and allow the three return lights having passed through the lens to pass therethrough; a semitransparent mirror on which the three return lights having passed through the polarizing-beam splitter are incident, and which guide the first-return light toward the first photodetector and the second- and third-return lights toward the second photodetector.

摘要翻译： 一种光拾取装置包括：三波长激光二极管，包括第一，第二和第三激光元件，以分别发射具有第一，第二和第三波长的第一，第二和第三激光束， 三个激光元件容纳在同一种情况下; 将三个激光束分别聚焦在第一至第三光盘信号记录层上的物镜; 第一光电检测器，用于从第一光盘信号记录层反射的第一返回光照射第二光电检测器，照射分别从第二光盘信号记录层和第二光盘信号记录层反射的第二和第三返回光; 盘信号记录层; 偏振光束分离器，用于将三个激光束反射到透镜，并允许穿过透镜的三个返回光通过; 已经通过偏振光束分离器的三个返回光入射的半透明反射镜，并且将第一返回光朝着第一光电检测器引导，第二和第三返回光朝第二光电检测器引导。

公开(公告)号：US20110149705A1

公开(公告)日：2011-06-23

申请号：US11659654

申请日：2005-09-07

申请人： Richard H. Selinfreund ,  Rakesh Vig ,  Jeffrey M. Drew ,  Donald Roland Goyette

发明人： Richard H. Selinfreund ,  Rakesh Vig ,  Jeffrey M. Drew ,  Donald Roland Goyette

IPC分类号： G11B27/36 ,  G11B7/24

CPC分类号： G11B7/247 ,  G11B7/00736 ,  G11B7/24097 ,  G11B7/243 ,  G11B7/252 ,  G11B19/122 ,  G11B20/00086 ,  G11B20/00586 ,  G11B20/00768 ,  G11B20/00876 ,  G11B20/00927 ,  G11B23/281 ,  G11B2007/0006

摘要： A device for preventing and controlling copying of data from an optical storage disc utilizing physical modifications in or on a storage capable optical disc. Also described is, a method for authenticating and controlling reading or copying of information or data in or on optical discs as, for example, wherein a locus on or in the optical storage disc is initially read to produce a signal and is then re-read by a reader to produce a second signal. The signal detected upon re-reading is different from the signal that is detected upon initial sampling.

摘要翻译： 一种用于通过在存储的光盘上或其上进行物理修改来防止和控制从光学存储盘复制数据的装置。 还描述了一种用于认证和控制在光盘中或其上的信息或数据的读取或复制的方法，例如，其中最初读取光存储盘上或其中的轨迹以产生信号，然后重新读取 由读者产生第二信号。 在重新读取时检测到的信号与初始采样时检测到的信号不同。

公开(公告)号：US20110141873A1

公开(公告)日：2011-06-16

申请号：US13021871

申请日：2011-02-07

申请人： Koji MIYASAKA ,  Hiromasa SATO

发明人： Koji MIYASAKA ,  Hiromasa SATO

IPC分类号： G11B7/135 ,  G02B5/18 ,  G02B3/00 ,  G02B1/11

CPC分类号： G02B27/4294 ,  G02B1/115 ,  G02B5/1814 ,  G11B7/0903 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

摘要： There is provided a diffraction grating including a convex portion and a concave portion which are used for lights having different wavelengths λ1, λ2 and λ3 and are alternately disposed on at least one surface of a substrate with a predetermined pitch. An average refractive index of the convex portion is smaller than an average refractive index of the concave portion. A phase difference in the lights having the wavelength λ1 which transmit the convex portion and the concave portion and a phase difference in the lights having the wavelength λ2 which transmit the convex portion and the concave portion are both substantially the integral multiple of 2π, and a phase difference in the lights having the wavelength λ3 which transmit the convex portion and the concave portion is substantially the non-integral multiple of 2π.

摘要翻译： 提供了包括用于具有不同波长λ1，λ2和λ3的光的凸部和凹部的衍射光栅，并以预定间距交替地设置在基板的至少一个表面上。 凸部的平均折射率小于凹部的平均折射率。 具有透射凸部和凹部的波长λ1的光和透射凸部和凹部的波长λ2的光的相位差的相位差都基本上是2＆amp; pgr的整数倍， 具有透射凸部和凹部的波长λ3的光的相位差基本上为2＆pgr的非整数倍。