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    • 1. 发明授权
    • Tracking servo system for controllably projecting an optical beam on an
optical disk
    • 用于可控地将光束投影到光盘上的跟踪伺服系统
    • US4782474A
    • 1988-11-01
    • US824277
    • 1986-01-30
    • Shigeru AraiToshitaka Iwamoto
    • Shigeru AraiToshitaka Iwamoto
    • G11B7/09G11B7/095
    • G11B7/0956G11B7/09
    • An optical storage apparatus for storing and reading information on an optical disk with an optical beam, including a tracking servo system having an objective lens, which is driven in a focusing direction F and a tracking direction T by a lens actuator, and a tilting mirror, which is rotated by a mirror actuator. The tracking servo system eliminates beam shift by controlling the lens actuator and the mirror actuator to position the lens and the mirror so that the laser beam always passes through a back focal point of the lens located on the opposite side of the lens from the optical disk. As a result, the laser beam proceeds from the lens to the disk along a path which is parallel with the optical axis of the lens and strikes the disk perpendicularly. Accordingly, the return path of the laser beam reflected by the surface of the disk coincides with the incident path of the laser beam, and no beam shaft is experienced.
    • 一种用于利用光束存储和读取光盘上的信息的光学存储装置,包括具有物镜的跟踪伺服系统,其通过透镜致动器沿着聚焦方向F和跟踪方向T驱动,以及倾斜镜 ,其由反光镜致动器旋转。 跟踪伺服系统通过控制透镜致动器和反射镜致动器来定位透镜和反射镜来消除光束偏移,使得激光束总是通过位于透镜的相对侧的透镜的后焦点与光盘 。 结果,激光束沿着与透镜的光轴平行的路径从透镜延伸到盘,并且垂直地撞击盘。 因此,由盘的表面反射的激光束的返回路径与激光束的入射路径一致,不会产生光束轴。
    • 4. 发明授权
    • Reciprocating compressor
    • 往复式压缩机
    • US07563078B2
    • 2009-07-21
    • US11041424
    • 2005-01-25
    • Haruo MiuraShigeru AraiYouichirou FukaiYasuo Fukushima
    • Haruo MiuraShigeru AraiYouichirou FukaiYasuo Fukushima
    • F04B1/04F04B27/04
    • F04B25/00F04B5/02F04B27/02
    • A reciprocating compressor includes: a low-pressure stage compression part for compressing low-pressure working gas supplied from a supply source; two high-pressure stage compression parts for compressing the working gas compressed by the low-pressure stage compression part at two stages; and a crank mechanism for driving the low-pressure stage compression part and the high-pressure stage compression parts. The two high-pressure stage compression parts each have a plunger and a cylinder and are arranged on both sides of the crank mechanism in such a way as to extend coaxially opposite to each other. The low-pressure stage compression part has a piston and a cylinder and is located in the middle of the two high-pressure stage compression parts. The crank mechanism, the low-pressure stage compression part, and the two high-pressure stage compression parts are substantially located in the same plane.
    • 往复式压缩机包括:低压级压缩部件,用于压缩从供给源供给的低压工作气体; 两个高压级压缩部件,用于压缩由低压级压缩部件压缩的工作气体两级; 以及用于驱动低压级压缩部和高压级压缩部的曲柄机构。 两个高压级压缩部分各自具有柱塞和气缸,并且以彼此同轴地相对延伸的方式布置在曲柄机构的两侧。 低压级压缩部件具有活塞和气缸,位于两个高压级压缩部件的中间。 曲柄机构,低压级压缩部和两个高压级压缩部基本上位于同一平面内。
    • 5. 发明申请
    • Reciprocating Compressor and Filter Therefor
    • 往复式压缩机及其过滤器
    • US20070089382A1
    • 2007-04-26
    • US11552665
    • 2006-10-25
    • Haruo MiuraShigeru Arai
    • Haruo MiuraShigeru Arai
    • B01D50/00
    • F04B39/16F04B39/0284F04B39/04
    • A reciprocating compressor has a plurality of compressor stages each compressing a working gas by combining a cylinder and a plunger, and its discharge pressure exceeds 40 MPa. The compressor stage has a packing seal which seals a shaft of the plunger, and oil pouring means which pours a lubricating oil to the packing seal. A filter removes the lubricating oil poured by the oil pouring means from the working gas. In the filter, a first element using micro glass fiber and a second element using functional activated carbon are coaxially mounted. These two elements are included together in a pressure container. According to the above described construction, in the compressor at a high pressure exceeding 40 MPa, quality of the discharge gas can be kept and the compressor can be made compact.
    • 往复式压缩机具有多个压缩机级,每个压缩机级通过组合气缸和柱塞来压缩工作气体,并且其排出压力超过40MPa。 压缩机级具有密封柱塞的轴的填料密封件和将润滑油倒入填料密封件的注油装置。 过滤器从工作气体中除去由浇注装置浇注的润滑油。 在过滤器中,使用微玻璃纤维的第一元件和使用功能活性炭的第二元件同轴安装。 这两个元件一起包含在压力容器中。 根据上述结构,在高压超过40MPa的压缩机中,可以保持排出气体的质量,并且能够使压缩机紧凑化。
    • 6. 发明授权
    • Magneto-optical disk apparatus having a ejector arm and magnetic field
generating means mounted on a stationary base
    • 具有喷射臂和安装在固定基座上的磁场产生装置的磁光盘装置
    • US5771217A
    • 1998-06-23
    • US400389
    • 1995-03-03
    • Mitsuo TakahashiKoji AsakoKazuhiko KageyamaYoshihiro SatoShigeru Arai
    • Mitsuo TakahashiKoji AsakoKazuhiko KageyamaYoshihiro SatoShigeru Arai
    • G11B7/085G11B11/105G11B17/04G11B13/04
    • G11B17/0436G11B11/1055G11B7/08588
    • A disk apparatus in which the thickness is suppressed. A recording/reproducing medium containing a disk rotatably in a hard case is moved substantially in a horizontal direction through an opening of the base of the disk apparatus for insertion and ejection operations of the recording/reproducing medium and recording/reproducing operation. For this purpose, the following are provided: a recording/reproducing unit for performing recording and reproduction, a container for containing the recording/reproducing medium at a predetermined position in the disk apparatus when the disk is inserted, a rotation motor for giving a predetermined turning effort by performing the chucking to the recording/reproducing medium, a chucking position where the chucking is performed, a vertical movement mechanism for moving the rotation motor to the waiting position where the recording/reproducing medium is inserted or ejected, a control mechanism for retaining the vertical movement mechanism to the chucking position, and a release mechanism for releasing and ejecting the recording/reproducing medium.
    • 抑制厚度的盘装置。 包含可旋转地在硬壳中的盘的记录/再现介质基本上在水平方向上通过盘装置的基座的开口移动,用于记录/再现介质的插入和排出操作以及记录/再现操作。 为此,提供以下内容:用于执行记录和再现的记录/再现单元,当插入盘时在盘装置中的预定位置处容纳记录/再现介质的容器,用于给予预定的 通过对记录/再现介质进行卡盘,进行卡盘的夹持位置,用于将旋转马达移动到记录/再现介质被插入或弹出的等待位置的垂直移动机构来转动力;控制机构, 将垂直移动机构保持在夹持位置,以及释放和释放记录/再现介质的释放机构。
    • 7. 发明授权
    • Focusing and tracking servo system for controlling the projection of an
optical beam on an optical disk
    • 聚焦和跟踪伺服系统,用于控制光束在光盘上的投影
    • US4888752A
    • 1989-12-19
    • US225610
    • 1988-07-28
    • Shigeru Arai
    • Shigeru Arai
    • G02B7/28G11B7/09G11B7/135
    • G11B7/0917G11B7/0908
    • A focusing and tracking servo system for generating focusing and tracking error signals for use in driving a servo system which focuses and tracks an optical beam, such as a laser beam on an optical disk. The system includes a photosensor having two sub-photosensors arranged to be adjacent to each other and to have a common boundary, and the laser beam has a circular cross-section and an optical axis. The laser beam reflected by the optical disk is incident on the photosensor so that the optical axis is offset from the boundary between the sub-photosensors. Consequently, the optical spot formed on each sub-photosensor has a different area and the sub-photosensors generate different photoelectric currents. The output currents from the sub-photosensors are individually amplified by amplifiers having adjustable amplification factors, and the amplification factors are set so that they are inversely proportional to the output current of the sub-photosensors when the laser beam incident on the optical disk is in an in-focus state. When the laser beam incident on the optical disk is in an out-of-focus state the optical spot changes, and thus the relative output currents of the sub-photosensors change. A focusing error signal is generated in accordance with the difference of the output currents of the amplifiers. In another embodiment of the present invention a photosensor array having four sub-photosensors arranged in a quadrant matrix with two boundaries is utilized to generate both focusing and tracking error signals.
    • 一种聚焦跟踪伺服系统,用于产生用于驱动伺服系统的聚焦和跟踪误差信号,该伺服系统聚焦并跟踪诸如激光束在光盘上的光束。 该系统包括具有布置成彼此相邻并且具有公共边界的两个子光电传感器的光传感器,并且激光束具有圆形横截面和光轴。 由光盘反射的激光束入射到光电传感器上,使得光轴偏离子光电传感器之间的边界。 因此,形成在每个子光电传感器上的光点具有不同的面积,并且副光电传感器产生不同的光电流。 来自子光电传感器的输出电流由具有可调整放大因子的放大器单独放大,并且放大因子被设置为当入射在光盘上的激光束处于...时,它们与副光电传感器的输出电流成反比 对焦状态。 当入射到光盘上的激光束处于离焦状态时,光点变化,因此副光敏传感器的相对输出电流发生变化。 根据放大器的输出电流的差异产生聚焦误差信号。 在本发明的另一实施例中,利用布置在具有两个边界的象限矩阵中的具有四个子光电传感器的光电传感器阵列以产生聚焦和跟踪误差信号。