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    • 6. 发明授权
    • Lens apparatus and image pickup system including the same
    • 镜头装置和包括其的摄像系统
    • US08643956B2
    • 2014-02-04
    • US13334212
    • 2011-12-22
    • Hidenori NakagawaRyo Kuwano
    • Hidenori NakagawaRyo Kuwano
    • G02B15/14G02B7/02
    • G02B7/102
    • A lens apparatus includes a fixed lens barrel, a cam ring provided inside the barrel, lens units, and a holder for holding the lens units movable in optical-axis direction, the holder including a driver for driving at least one of the lens units in the optical-axis direction, the holder supported movably in the optical-axis direction inside the cam ring, in which the holder includes cam followers, and the cam followers slidably engage with a cam groove of the cam ring and a straight groove of the barrel to determine a position of the holder in the optical-axis direction by rotation of the cam ring about optical axis, the holder includes a slide connector for electrically connecting to a contact provided slidably on the barrel through an opening penetrating the cam ring radially, and the driver is fed with power from the barrel side through the slide connector.
    • 透镜装置包括固定透镜镜筒,设置在镜筒内的凸轮环,透镜单元和用于保持透镜单元可沿光轴方向移动的保持器,该保持器包括用于驱动至少一个透镜单元的驱动器 所述保持器包括凸轮从动件,并且所述凸轮从动件可滑动地与所述凸轮环的凸轮槽和所述滚筒的直槽相接合, 通过凸轮环绕光轴旋转来确定保持器在光轴方向上的位置,保持器包括滑动连接器,用于电连接到通过径向穿过凸轮环的开口可滑动地设置在筒上的触点,以及 驱动器从筒侧通过滑动连接器供电。
    • 7. 发明申请
    • LENS APPARATUS AND IMAGE PICKUP SYSTEM INCLUDING THE SAME
    • 镜头装置和图像拾取系统,包括它们
    • US20120162781A1
    • 2012-06-28
    • US13334212
    • 2011-12-22
    • Hidenori NAKAGAWARyo KUWANO
    • Hidenori NAKAGAWARyo KUWANO
    • G02B7/09G02B7/10
    • G02B7/102
    • A lens apparatus includes a fixed lens barrel, a cam ring provided inside the barrel, lens units, and a holder for holding the lens units movable in optical-axis direction, the holder including a driver for driving at least one of the lens units in the optical-axis direction, the holder supported movably in the optical-axis direction inside the cam ring, in which the holder includes cam followers, and the cam followers slidably engage with a cam groove of the cam ring and a straight groove of the barrel to determine a position of the holder in the optical-axis direction by rotation of the cam ring about optical axis, the holder includes a slide connector for electrically connecting to a contact provided slidably on the barrel through an opening penetrating the cam ring radially, and the driver is fed with power from the barrel side through the slide connector.
    • 透镜装置包括固定透镜镜筒,设置在镜筒内的凸轮环,透镜单元和用于保持透镜单元可沿光轴方向移动的保持器,该保持器包括用于驱动至少一个透镜单元的驱动器 所述保持器包括凸轮从动件,并且所述凸轮从动件可滑动地与所述凸轮环的凸轮槽和所述滚筒的直槽相接合, 通过凸轮环绕光轴旋转来确定保持器在光轴方向上的位置,保持器包括滑动连接器,用于电连接到通过径向穿过凸轮环的开口可滑动地设置在筒上的触点,以及 驱动器从筒侧通过滑动连接器供电。
    • 9. 发明授权
    • Information recording device, information recording method, and information recording program
    • 信息记录装置,信息记录方法和信息记录程序
    • US07755990B2
    • 2010-07-13
    • US11631505
    • 2005-06-30
    • Hidenori NakagawaYoshio SasakiToshifumi Harada
    • Hidenori NakagawaYoshio SasakiToshifumi Harada
    • G11B7/125
    • G11B7/1263G11B7/1267
    • Accurate calibration of recording power is performed without exceeding a rated output value of a laser diode even if recording speed is increased and high recording power is required. An information recording apparatus records information on an information recording medium such as a DVD-R/RW or a DVD+R/RW by applying a laser light onto the information recording medium. A pickup has a laser light source. A light receiving unit for detecting the amount of light by receiving the laser light emitted from the laser light source is provided, and the power of the laser light is controlled based on the power of the detected laser light. Before the actual information recording, a test emission is performed during calibration to determine an adequate recording power, and the emission duty of the laser light is controlled within the range not exceeding the rated output value of the laser light source.
    • 即使记录速度提高并且需要高记录功率,也可以在不超过激光二极管的额定输出值的情况下进行精确的记录功率校准。 信息记录装置通过将激光施加到信息记录介质上来记录诸如DVD-R / RW或DVD + R / RW之类的信息记录介质的信息。 拾音器具有激光光源。 提供了一种用于通过接收从激光源发射的激光来检测光量的光接收单元,并且基于检测到的激光的功率来控制激光的功率。 在实际信息记录之前,在校准期间执行测试发射以确定足够的记录功率,并且将激光的发射占空比控制在不超过激光光源的额定输出值的范围内。