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公开(公告)号：US5789852A
公开(公告)日：1998-08-04
申请号：US582813
申请日：1996-01-04
IPC分类号： H01J29/48 , H01S3/0959 , H01S5/30 , H01J29/46 , H01J29/50
CPC分类号： H01J29/488 , H01S3/0959 , H01J2229/4827 , H01S5/30
摘要： An electron-beam-pumped laser includes a cathode ray tube containing a laser crystal, an electron gun for producing an electron beam including a multi-element focusing electrode layer on an inner surface of the tube for effecting focusing of the beam on the laser crystal, and a multi-element deflection electrode layer on an inner surface of the tube for effecting scanning of the beam across the laser crystal. The laser crystal is disposed on a metal heat-conductive support which is adapted for accurately positioning the laser crystal in closely spaced relationship with respect to the electron gun and to a laser light emitting window of the tube.
摘要翻译： 电子束泵浦激光器包括含有激光晶体的阴极射线管，用于在管的内表面上产生包括多元素聚焦电极层的电子束的电子枪，用于将光束聚焦在激光晶体上 以及在管的内表面上的多元素偏转电极层，用于对激光晶体进行束的扫描。 激光晶体设置在金属导热支撑件上，金属导热支撑件适于将激光晶体相对于电子枪和管的激光发射窗口紧密地定位。
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2.发明授权Device for recording and/or reading information by means of a radiation beam, plate-shaped element suitable for use in the device, and disc player comprising the device 失效用于通过辐射束，适于在该装置中使用的板状元件记录和/或读取信息的装置，以及包括该装置的盘播放器
公开(公告)号：US5612945A
公开(公告)日：1997-03-18
申请号：US186399
申请日：1994-01-25
CPC分类号： G11B7/22 , G11B7/08582
摘要： An optical scanner for a disc placed on a turntable, having a scanning device mounted on a slide which is movable radially with respect to the turntable. The slide includes a body made of two thin plates which are parallel to each other and the direction of movement. The plates have patterns of raised portions which face each other. The plates are fixed to each other at locations where the raised portions contact each other.
摘要翻译： 一种用于放置在转台上的盘的光学扫描器，其具有安装在滑块上的扫描装置，其可相对于转台径向移动。 滑动件包括由彼此平行的两个薄板制成的主体和运动方向。 板具有彼此面对的凸起部分的图案。 这些板在凸起部分彼此接触的位置彼此固定。
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公开(公告)号：US5289442A
公开(公告)日：1994-02-22
申请号：US969918
申请日：1992-11-02
CPC分类号： G11B7/08564 , G11B7/08582
摘要： A device for optically scanning a surface (2) with a focal spot (11) formed by an objective lens (10). The objective lens is electromagnetically suspended in a stationary coil system (14) comprising a plurality of coil pairs located one behind the other in a given direction. The coil system can move the objective lens in five or six degrees of freedom. A radiation beam is displaced parallel to itself via a pivotal mirror (22) and a scanning lens (23) so as to track the movement of the objective lens in said direction. A communicator (96) drives only those coils of the coil system which are proximate to the objective system at a given moment.
摘要翻译： 一种用由物镜（10）形成的焦点（11）来光学扫描表面（2）的装置。 物镜被电磁悬挂在固定线圈系统（14）中，该固定线圈系统（14）包括在给定方向上一个接一个地定位的多个线圈对。 线圈系统可以以五或六个自由度移动物镜。 辐射束经由枢转反射镜（22）和扫描透镜（23）平行于其自身移位，以便沿着所述方向跟踪物镜的移动。 通信器（96）仅在给定时刻仅驱动线圈系统的接近物镜系统的线圈。
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公开(公告)号：US5014254A
公开(公告)日：1991-05-07
申请号：US285184
申请日：1988-12-15
IPC分类号： G11B11/10 , G11B11/105
CPC分类号： G11B11/10521 , G11B11/10513 , G11B11/1053 , G11B11/10536 , G11B11/10554 , G11B11/10576
摘要： A method and apparatus are revealed for recording information on a record carrier (1) having a magneto-optical recording layer (2), a pattern of magnetic domains (23, 24) having a first and a second direction of magnetization being formed in the recording layer (2). In accordance with the method, areas (22) of the recording layer are heated by the radiation pulses (20). The heated areas (22) are magnetized by means of a coil (12) which is energized with energizing-current pulses (21) which lag the radiation pulses (20) to such an extent that cooling of the areas (22) takes place substantially during the generation of the energizing pulses (12).
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公开(公告)号：US4773055A
公开(公告)日：1988-09-20
申请号：US119306
申请日：1987-11-06
CPC分类号： G11B7/0956 , G11B7/0925
摘要： An electro-optical apparatus comprising an objective (7) scans an optical disc (3) having a transparent protective layer (5) by means of a radiation beam (10) which, through the transparent layer, is focussed on a reflecting recording surface (4). The objective moves along the optical axis (19) for focussing the radiation beam on the recording layer and moreover performs limited pivotal movements. The position of the optical axis of the objective is corrected for obliquity of the surface of the optical disc, correction means (22A, B) being provided to tilt the objective through a correction angle, so that the angle between the optical axis and the normal to the disc surface is reduced.
摘要翻译： 一种电光设备，包括物镜（7）借助于辐射束（10）扫描具有透明保护层（5）的光盘（3），所述辐射束（10）通过所述透明层聚焦在反射记录表面 4）。 物镜沿着光轴（19）移动，用于将辐射束聚焦在记录层上，而且进行有限的枢转运动。 物镜的光轴的位置被校正为光盘的表面的倾斜度，校正装置（22A，B）被设置成通过校正角度倾斜物镜，使得光轴和法线之间的角度 到盘面减少。
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公开(公告)号：US5825740A
公开(公告)日：1998-10-20
申请号：US888143
申请日：1997-07-03
IPC分类号： G11B7/085 , G02B26/12 , G11B7/0025 , G11B7/003 , G11B7/08 , G11B7/09 , G11B7/095 , G11B7/133 , G11B7/1362 , G11B7/00
CPC分类号： G11B7/1362 , G11B7/0025 , G11B7/003 , G11B7/08 , G11B7/0901 , G11B7/133
摘要： A device for electromagnetically scanning information tracks on a record carrier, such as an optical tape, via a scanning beam is described. On this tape, information tracks are arranged substantially parallel and substantially transverse to a transport direction of the record carrier. The device is provided with a scanning unit for scanning, with the beam always following parallel scanning paths, and a control system for controlling an angle of the scanning paths with respect to the transport direction, dependent on a tilt signal. According to the invention, the device is provided with angle-measuring means for generating the tilt signal dependent on a tracking error signal which is indicative of a difference between a scanning path and the relevant information track. In addition to a tilt signal, a speed signal may also be derived from the tracking error signal. Both the tilt signal and the speed signal are derived from the tracking error signal in a captured and in a non-captured state of operation.
摘要翻译： 描述了一种用于通过扫描光束在诸如光学带的记录载体上电磁扫描信息轨道的装置。 在该磁带上，信息轨迹基本上平行并且基本上横向于记录载体的输送方向。 该装置设置有用于扫描的扫描单元，其中光束始终遵循平行扫描路径，以及用于根据倾斜信号控制扫描路径相对于传送方向的角度的控制系统。 根据本发明，该装置设置有角度测量装置，用于根据指示扫描路径和相关信息轨道之间的差异的跟踪误差信号产生倾斜信号。 除了倾斜信号之外，还可以从跟踪误差信号导出速度信号。 在捕获的和未捕获的操作状态下，倾斜信号和速度信号都来自跟踪误差信号。
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公开(公告)号：US5802033A
公开(公告)日：1998-09-01
申请号：US757533
申请日：1996-11-27
IPC分类号： G11B7/00 , G11B7/003 , G11B7/09 , G11B7/1362 , G11B3/74
CPC分类号： G11B7/1362 , G11B7/003 , G11B7/0901
摘要： An optical apparatus for scanning a tape-shaped record carrier, which apparatus uses a mirror polygon for scanning tracks extending perpendicularly to the tape travel direction. Since at least one facet, or a part thereof, of the mirror polygon extends at a different angle to the axis of rotation, the scanning spot is periodically moved transversely to the track direction, so that a tracking signal can be generated.
摘要翻译： 一种用于扫描带状记录载体的光学装置，该装置使用反射镜多边形来扫描垂直于磁带行进方向延伸的轨迹。 由于镜面多边形的至少一个面或其一部分与旋转轴线成不同的角度延伸，所以扫描光点周期性地沿轨道方向移动，从而可以产生跟踪信号。
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8.发明授权Position detection system for an object with at least five degrees of freedom 失效具有至少五个自由度的物体的位置检测系统
公开(公告)号：US5784168A
公开(公告)日：1998-07-21
申请号：US795824
申请日：1997-02-06
CPC分类号： G01D5/28
摘要： A position detection system (80) is described for detecting movements of an object (20) in at least five degrees of freedom, which system comprises a radiation source (33), a beam splitter (36) for forming a first measuring sub-beam (45) and a second measuring sub-beam (50), a reflector (38) arranged in the path of one of these measuring beams (45, 50) and a composite radiation-sensitive detection system (60). The first measuring sub-beam (45) is used for detecting displacements along three mutually perpendicular axes (X, Y, Z), and the second measuring sub-beam (50) is used for detecting rotations about at least two of these axes.
摘要翻译： 描述了一种位置检测系统（80），用于在至少五个自由度中检测物体（20）的运动，该系统包括辐射源（33），分束器（36），用于形成第一测量子光束 （45）和第二测量子光束（50），布置在这些测量光束（45,50）中的一个的路径中的反射器（38）和复合辐射敏感检测系统（60）。 第一测量子光束（45）用于检测沿着三个相互垂直的轴线（X，Y，Z）的位移，并且第二测量子光束（50）用于检测关于这些轴中的至少两个的旋转。
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9.发明授权
公开(公告)号：US5548114A
公开(公告)日：1996-08-20
申请号：US356949
申请日：1994-12-15
CPC分类号： G11B7/0903 , G11B7/003 , G11B7/0904
摘要： An optical scanning device for scanning a tape-like record carrier. The device includes an optical system for focusing a radiation beam at the record carrier, which radiation beam causes a scanning spot to occur on the record carrier. The device also includes a rotary polygon mirror which causes the scanning spot to be displaced transversely to the direction of the tape with a specific repetition rate. The tape-like record carrier is moved with a certain velocity in the longitudinal direction of the tape relative to the scanning device. In this manner, the record carrier is scanned in accordance with a track pattern formed by a longitudinal path of substantially parallel tracks which have a substantially constant track pitch and a track direction transverse to the longitudinal direction of the record carrier. During operation, vibrations occur which cause displacements to occur of the scanning spot over the recording layer transverse to the scanning direction. The relation between velocity and repetition rate is selected such that the amplitude of the displacements of the scanning spot, which displacements have a frequency exceeding the repetition rate, is smaller than the track pitch. As a result, the track pitch throughout the length of the tracks remains substantially constant without use of a controller.
摘要翻译： 一种用于扫描带状记录载体的光学扫描装置。 该装置包括用于将辐射束聚焦在记录载体处的光学系统，该辐射束使得记录载体上发生扫描点。 该装置还包括旋转多面反射镜，其使得扫描点以特定重复率横向于带的方向移位。 带状记录载体相对于扫描装置在带的长度方向上以一定的速度移动。 以这种方式，根据由具有基本上恒定的轨道间距和横向于记录载体的纵向方向的轨道方向的基本上平行的轨道的纵向路径形成的轨迹图案来扫描记录载体。 在操作过程中，发生振动发生在记录层上横扫扫描方向的扫描点的位移。 选择速度和重复率之间的关系，使得位移具有超过重复率的频率的扫描点的位移的幅度小于轨道间距。 结果，在使用控制器的情况下，在整个轨道长度上的轨道间距保持基本上恒定。
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公开(公告)号：US4193091A
公开(公告)日：1980-03-11
申请号：US905890
申请日：1978-05-15
CPC分类号： G11B7/0937 , G11B7/08 , G11B7/093 , G11B7/123 , H01S5/02272 , H01S5/024
摘要： An optical read unit for reading radiation-reflecting video discs comprises a semiconductor laser which with the aid of a scan wobbler and a focussing wobbler is moved at high frequency in two directions relative to the video disc, a radial direction for tracking purposes and a direction normal to the disc for the purpose of automatic focussing. The semiconductor diode laser is mounted on a metal radiation source carrier which is connected to a heat sink for carrying off the heat with a low temperature gradient, and is driven by piezo-electric plates.
摘要翻译： 用于读取辐射反射视频光盘的光学读取单元包括半导体激光器，借助于扫描摆动器和聚焦摇摆器，相对于视频盘在两个方向上以高频率移动，用于跟踪目的的径向方向和方向 正常的光盘为了自动聚焦。 半导体二极管激光器安装在金属辐射源载体上，金属辐射源载体连接到散热器，用于以低温度梯度传导热量，并由压电板驱动。
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