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    • 2. 发明申请
    • High-precision positioning apparatus
    • 高精度定位装置
    • US20040268375A1
    • 2004-12-30
    • US10864176
    • 2004-06-08
    • ALPS ELECTRIC CO., LTD
    • Yoshihiro Someno
    • G11B025/00
    • G11B7/0857G11B7/085G11B7/08547
    • A high-precision positioning apparatus includes a fine driving unit for producing horizontal and small movements of a flat recording medium relative to an optical system, the medium being used for optically recording and reproducing information. The fine driving unit includes a frame-shaped unit body, a first driving frame inside the unit body, and a second driving frame inside the first driving frame and secured at a position adjacent to a magnetized portion of the recording medium. The first driving frame is movable relative to the unit body by fine driving devices in the horizontal direction of the recording medium, while the second driving frame is movable relative to the first driving frame by other fine driving devices in the horizontal direction of the recording medium and in the direction substantially orthogonal to the moving direction of the first driving frame, thereby producing horizontal and small movements of the recording medium.
    • 高精度定位装置包括精细驱动单元,用于相对于光学系统产生平面记录介质的水平和小移动,所述介质用于光学记录和再现信息。 精细驱动单元包括框架单元主体,单元主体内部的第一驱动框架和位于第一驱动框架内部的第二驱动框架,并且固定在与记录介质的磁化部分相邻的位置处。 第一驱动框架可以通过在记录介质的水平方向上的精细驱动装置相对于单元主体移动,而第二驱动框架可以通过其他精细驱动装置在记录介质的水平方向上相对于第一驱动框架移动 并且在与第一驱动框架的移动方向大致正交的方向上,从而产生记录介质的水平和小的移动。
    • 3. 发明申请
    • Apparatus for creating a multi-dimensional data signal
    • 用于创建多维数据信号的装置
    • US20040208108A1
    • 2004-10-21
    • US10731784
    • 2003-12-09
    • Lucere, LP
    • Robert G. McNiece
    • G11B007/00
    • G11B7/1353G11B7/08547G11B7/13G11B7/14
    • An optical disk drive (101) is disclosed which has essentially no seek time. The drive utilizes a Virtual Head (VH) (103) which is capable of accessing any and/or all tracks in an optical disk (111) at any time. The drive utilizes a procedure by which all of the tracks (208) in an optical disk are continuously mapped to a detector (121) space at all times, thus making data stored on the disk drive available almost instantaneously. The mapping of the optical disk tracks to the sensor space is direct in that it is predetermined and is an integral part of the driver software. The direct mapping makes it possible to use the least amount of computation time required to access any track. The technique is enabled by using a combination of a holographic lens element (125) with the detector. The technique and the components used in this device open the possibility for rapid data transfers using multidimensional data access.
    • 公开了一种基本上没有寻道时间的光盘驱动器(101)。 该驱动器利用虚拟头(VH)(103),其能够随时访问光盘(111)中的任何和/或所有轨道。 驱动器利用光盘中的所有轨道(208)始终连续地映射到检测器(121)空间的过程,从而使存储在磁盘驱动器上的数据几乎瞬时可用。 将光盘轨迹映射到传感器空间是直接的,因为它是预定的并且是驱动程序软件的组成部分。 直接映射使得可以使用访问任何轨道所需的最少计算时间。 该技术通过使用全息透镜元件(125)与检测器的组合来实现。 该设备中使用的技术和组件开放了使用多维数据访问进行快速数据传输的可能性。
    • 4. 发明授权
    • Stationary optical data storage system using holographic or
acousto-optical deflection
    • 使用全息或声光偏转的固定光学数据存储系统
    • US5740148A
    • 1998-04-14
    • US779463
    • 1997-01-07
    • Yu Hong Ja
    • Yu Hong Ja
    • G11B7/004G11B7/007G11B7/013G11B7/085G11B7/12G11B7/24G11B11/105G11B7/00
    • G11B7/007G11B11/10584G11B11/10586G11B7/08547G11B7/08558G11B7/24G11B7/24085G11B7/004G11B7/12Y10S428/913Y10S430/146Y10T428/21Y10T428/31678
    • An optical data storage system for use with a stationary data storage medium includes a stationary optical head for steering an incident laser beam holographically and/or by means of an acousto-optical method along the X and Y direction across the data storage medium. The incident laser beam is selectively reflected by the data storage medium to indicate the type of data bits recorded on the storage medium. In a preferred embodiment the optical head includes a laser source for emiting a collimated laser beam, a beam steering element for steering the laser beam; a beam splitter for deflecting the reflected laser beam; and a photo-detector for detecting the relative intensity of the reflected laser beam for determining the type of recorded data bits. In one embodiment the beam splitting element includes an elasto-optical crystal that causes the impinging laser beam to be deflected in the X and Y directions. In another embodiment the beam splitting element includes a photo-refractive crystal that causes the laser beam to deflect in the X-Y plane by means of holographic techniques.
    • 与固定数据存储介质一起使用的光学数据存储系统包括用于通过数据存储介质沿X和Y方向全息地和/或通过声光学方法转向入射激光束的固定光学头。 入射激光束被数据存储介质选择性地反射,以指示记录在存储介质上的数据位的类型。 在优选实施例中,光头包括用于发射准直激光束的激光源,用于转向激光束的光束操纵元件; 用于偏转反射的激光束的分束器; 以及光检测器,用于检测用于确定记录数据位类型的反射激光束的相对强度。 在一个实施例中,分束元件包括使入射激光束在X和Y方向上偏转的弹性光学晶体。 在另一个实施例中,分束元件包括光致折射晶体,其使得激光束通过全息技术在X-Y平面中偏转。
    • 8. 发明授权
    • Integral pickup for an optical digital disc using saw deflection and
lenses
    • 使用锯偏转和透镜的光学数字光盘的整体拾取
    • US4747090A
    • 1988-05-24
    • US559050
    • 1983-10-13
    • Tsukasa YamashitaNobuhisa InoueKazuhiko MoriMasaharu MatanoIsao Taguchi
    • Tsukasa YamashitaNobuhisa InoueKazuhiko MoriMasaharu MatanoIsao Taguchi
    • G11B7/085G11B7/09G11B7/12G11B7/135G02B6/12
    • G11B7/0917G11B7/08547G11B7/1245
    • A photo-pickup wherein a light emitting portion, a surface acoustic wave generating portion, a lens portion, a light receiving portion and a control portion are integrally integrated on a base plate formed on its surface with a light transmission path. The light emitting portion propagates a light beam to the light transmission path. The light beam propagating in the light transmission path is first deflected within a plane of the light transmission path by surface acoustic wave propagating on the light transmission path and propagated towards the lens portion. The lens portion is provided to project the light beram outside from the light transmission path and effect two-dimentional focusing of the projected beam and adjustment of focal position. The light receiving portion comprises a combination of a plurality of light receiving elements disposed at suitable intervals from the projected position of the light beam to receive a reflected light of the light beam. The control portion is provided to receive an output of the light receiving portion to process a signal and supply said control signal to the surface acoustic wave generating portion and lens portion, thereby effecting the control of deflection angle of the light beam, two-dimentional focusing of the projected beam and control of focal position.
    • 其中发光部分,表面声波发生部分,透镜部分,光接收部分和控制部分的光拾取器一体地集成在其表面上形成的基板上,具有光传输路径。 发光部将光束传播到光传输路径。 在光传输路径中传播的光束首先在光传输路径的平面内通过在光传输路径上传播并在透镜部分传播的表面声波而偏转。 透镜部分被设置成将光束从光传播路径向外突出,并且实现投影光束的二维聚焦和焦点位置的调整。 光接收部分包括多个光接收元件的组合,多个光接收元件以与光束的投影位置适当的间隔设置以接收光束的反射光。 控制部被设置为接收光接收部分的输出以处理信号并将所述控制信号提供给表面声波产生部分和透镜部分,从而实现光束偏转角的控制,二维聚焦 的投影光束和焦点位置的控制。
    • 10. 发明授权
    • Integrated optical device with improved isolation between the
semiconductor laser and the photodetectors
    • 具有改善半导体激光器和光电探测器之间隔离度的集成光学器件
    • US4716559A
    • 1987-12-29
    • US900792
    • 1986-08-27
    • Shiro Hine
    • Shiro Hine
    • G11B7/085G11B7/12G11B7/124G11B7/135G11B7/1384G02B6/10G02B6/32
    • G11B7/08547G11B7/124G11B7/1384
    • An optical head for a laser memory disk in accordance with the present invention containing a substrate (1); a waveguide layer (3) formed over a main surface of the substrate; a semiconductor laser (4) provided at an end of the waveguide layer for injecting laser beams into the waveguide; a focusing grating coupler (6) formed on the waveguide layer for focusing the injected laser beams on the disk and introducing beams reflected back from the disk into the waveguide; beam splitters (5) formed on the waveguide layer between the semiconductor laser and the focusing grating coupler, for bisecting each of the reflected beams at a prescribed acute angle; photodetectors (10) for converting the bisected beams into electrical signals; optical isolators (17, 18) formed between the semiconductor laser and the photodetectors.
    • 根据本发明的用于激光存储盘的光学头,其包含基板(1); 形成在所述基板的主表面上的波导层(3) 半导体激光器(4),设置在所述波导层的端部,用于将激光束注入到所述波导中; 形成在波导层上的聚焦光栅耦合器(6),用于将注入的激光束聚焦在盘上并将从光盘反射回的光束引入波导中; 形成在半导体激光器和聚焦光栅耦合器之间的波导层上的分束器(5),用于以规定的锐角将每个反射光束平分; 用于将平分束转换成电信号的光电探测器(10); 在半导体激光器和光电检测器之间形成的光隔离器(17,18)。