公开(公告)号：US20040202086A1

公开(公告)日：2004-10-14

申请号：US10822762

申请日：2004-04-13

发明人： Shinya Abe ,  Eiichi Ito

IPC分类号： G11B007/135

CPC分类号： G11B7/261 ,  G02F1/29 ,  G11B7/08552 ,  G11B7/1359 ,  G11B7/1398

摘要： A beam shaping device shapes a light beam from a light source to have a circular cross section, and changes the refractive index thereof by causing an electric field to be produced by a voltage applied to electrodes thereof. In this way, the light beam from the light source is deflected, and an objective lens gather the shaped and deflected light beam to expose an optical disk.

摘要翻译： 光束整形装置使来自光源的光束成形为具有圆形横截面，并且通过使施加到其电极的电压产生电场来改变其折射率。 以这种方式，来自光源的光束被偏转，并且物镜聚集成形和偏转的光束以露出光盘。

公开(公告)号：US4802153A

公开(公告)日：1989-01-31

申请号：US842200

申请日：1986-03-21

申请人： Keiji Kataoka ,  Takeshi Maeda ,  Yoshito Tsunoda

发明人： Keiji Kataoka ,  Takeshi Maeda ,  Yoshito Tsunoda

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/12

CPC分类号： G11B7/08558 ,  G11B7/08511 ,  G11B7/08552 ,  G11B7/1245

摘要： Accessing method and an apparatus therefor in an optical disc apparatus having an acousto-optic light deflector for deflecting a light spot to a different address or different track on an optical disc are disclosed. An auto-focus signal is held at a constant level for a predetermined period when the acousto-optic light deflector deflects the light spot. Thus, an affect caused by coexistence of a plurality of acoustic frequencies in the acoustic-optic device is eliminated and fast light accessing is attained.

摘要翻译： 公开了具有用于将光点偏转到光盘上的不同地址或不同轨道的声光偏转器的光盘装置中的访问方法及其装置。 当声光偏转器偏转光斑时，自动对焦信号被保持在一定的时间段上。 因此，消除了在声光装置中多个声频共存引起的影响，并且实现了快速的光访问。

公开(公告)号：US20070115789A1

公开(公告)日：2007-05-24

申请号：US10581636

申请日：2004-11-26

申请人： Coen Liedenbaum

发明人： Coen Liedenbaum

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G03H1/26 ,  G11B7/08552 ,  G11C13/042 ,  H04N5/23293

摘要： The invention relates to an optical holographic device for reading out a data page recorded in a holographic medium (106). The device comprises means (104, 105) for forming an imaged data page from the data page. The imaged data page comprises imaged data bits (a, b, c, d) having a first size (s1) in a direction (D). The device comprises means for detecting (114) the imaged data page. The detecting means comprise detector elements having a second size (s2) in the direction (D). The second size is larger than the first size. The device comprises displacement means (200) for displacing the imaged data page in the direction (D) with respect to the detecting means so as to scan the imaged data page.

摘要翻译： 本发明涉及一种用于读出记录在全息介质（106）中的数据页的光学全息装置。 该装置包括用于从数据页形成成像数据页的装置（104,105）。 成像数据页包括在方向（D）上具有第一尺寸（s 1）的成像数据位（a，b，c，d）。 该装置包括用于检测（114）成像数据页的装置。 检测装置包括在方向（D）上具有第二尺寸（s 2）的检测器元件。 第二个大小大于第一大小。 该装置包括用于相对于检测装置沿着方向（D）移动成像数据页以移动成像数据页的位移装置（200）。

公开(公告)号：US5175642A

公开(公告)日：1992-12-29

申请号：US632154

申请日：1990-12-21

申请人： Hiroyoshi Funato

发明人： Hiroyoshi Funato

IPC分类号： G02B6/12 ,  G02F1/335 ,  G11B7/085 ,  G11B7/12 ,  G11B7/135

CPC分类号： G11B7/139 ,  G02B6/12004 ,  G02F1/335 ,  G11B7/08552 ,  G11B7/08558 ,  G11B7/124 ,  G11B7/1381 ,  G11B2007/13727

摘要： A light source unit comprises a laser unit for emitting a laser beam; a deflection element for deflecting the laser beam emitted from the laser unit and for outputting a deflected laser beam, a deflection angle of the deflected laser beam being controlled by a control signal supplied from an external controller to the deflection element; and a shading member for partly or entirely shading the deflected laser beam output from the deflection element, a spot size of a laser beam passing through the shading member being changed in accordance with the deflection angle of the deflected laser beam. The light source unit outputs the laser beam passing through the shading element. An optical scanning image recording apparatus using the above light source unit comprises the light source unit described above, a recording medium on which an image is formed by an optical scanning, and an optical system which moves the light beam output from the light source unit so that the light beam moved by the optical system scans a surface of the recording medium.

摘要翻译： 光源单元包括用于发射激光束的激光单元; 用于偏转从激光单元发射的激光束并用于输出偏转的激光束的偏转元件，偏转的激光束的偏转角由由外部控制器提供给偏转元件的控制信号控制; 以及用于部分地或完全地遮蔽从偏转元件输出的偏转的激光束的遮光构件，通过遮光构件的激光束的光点尺寸根据偏转的激光束的偏转角度而改变。 光源单元输出通过遮光元件的激光束。 使用上述光源单元的光学扫描图像记录装置包括上述光源单元，通过光学扫描形成图像的记录介质和使从光源单元输出的光束移动的光学系统 由光学系统移动的光束扫描记录介质的表面。

公开(公告)号：US20090168625A1

公开(公告)日：2009-07-02

申请号：US12073584

申请日：2008-03-07

申请人： Chi-Hung Lee ,  Yi Chiu ,  Han-Ping D Shieh

发明人： Chi-Hung Lee ,  Yi Chiu ,  Han-Ping D Shieh

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/08552 ,  G11B7/123

摘要： A dynamic micro-machined optical device is applied in a micro-optical pickup. The micro-optical pickup includes an actuator and a dynamic grating, wherein the actuator may be a cantilever beam electrostatic actuator, a scratch drive actuator, a magnetic actuator or an electromagnetic actuator; and the actuator is controlled by applying an external voltage. The position of the dynamic grating is switchable between on and off the optical axis. When the external voltage is applied, the on-axis dynamic grating splits the light from a laser diode into multi-beams and the micro-optical pickup can rapidly retrieve information on the disk by simultaneously reading multi-tracks on the disk with multi low energy beams. When the external voltage is turned-off, the dynamic grating is off the optical axis and the light from the laser diode will pass directly and write information into the disk with single high energy beam.

摘要翻译： 动态微加工光学器件应用于微光学拾取器中。 微型光学拾取器包括致动器和动态光栅，其中致动器可以是悬臂光束静电致动器，刮擦驱动致动器，磁致动器或电磁致动器; 并且通过施加外部电压来控制致动器。 动态光栅的位置可以在光轴上和之间切换。 当施加外部电压时，轴上动态光栅将来自激光二极管的光分解成多光束，并且微光学拾取器可以通过同时以多个低能量读取盘上的多轨迹来快速检索盘上的信息 梁。 当外部电压关闭时，动态光栅离开光轴，来自激光二极管的光直接通过，并将信息写入具有单个高能束的光盘。

公开(公告)号：US06269066B1

公开(公告)日：2001-07-31

申请号：US09035824

申请日：1998-03-06

申请人： Roland H Chase

发明人： Roland H Chase

IPC分类号： G11B700

CPC分类号： G11B7/0901 ,  G11B7/08552 ,  G11B7/1245 ,  G11B7/14

摘要： A composite interferometer and electro-optical prism provide a means to control the position of a spot of light to read and write data on an optical disc. In this invention each light ray from a spectral source of a cone of light rays is regenerated into a plurality of light rays by an interferometer. These rays are transmitted through an electro-optic crystal and focused by a lens into a constructive interference fringe on an optical disc. A voltage across the electro-optical crystal and magnetic field inside the spectral source define the position of the constructive interference fringe on the disc.

摘要翻译： 复合干涉仪和电光棱镜提供了控制光点的位置以读取和写入光盘上的数据的手段。 在本发明中，来自光束的光谱源的每个光线通过干涉仪被再生成多个光线。 这些光线通过电光晶体透射并被透镜聚焦成光盘上的建构性干涉条纹。 频谱源内的电光晶体和磁场之间的电压限定了盘上的相长干涉条纹的位置。