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1. 发明授权

US06456796B1 Manual and electric motor operated apparatus for lens barrels 有权
标题翻译：手动和电动马达操作的镜筒
公开(公告)号：US06456796B1
公开(公告)日：2002-09-24
申请号：US09504038
申请日：2000-02-14
申请人： Minoru Tanaka , Keiji Kaneko , Hidetomo Tateno
发明人： Minoru Tanaka , Keiji Kaneko , Hidetomo Tateno
IPC分类号： G03B310
CPC分类号： G02B7/10
摘要： The present invention provides a lens barrel apparatus dispensing with deliberate switching between manual and automatic operation modes and permitting quick adjustment of conditions regarding the object. In this apparatus, a gear moving plate of a clutch mechanism is connected to the external gear of a zooming or focusing ring, a gear fixing plate of the clutch mechanism is connected to a zoom motor, and the gear moving plate is operated by a clutch operating motor via a coil spring and a moving gear to connect and disconnect the fixed plate. When the clutch mechanism is disconnected, a movable disk and a coil spring are enabled to freely rotate by a thrust bearing. By operating the clutch mechanism on the basis of an operational control signal for a zooming switch, switching between manual and electric operation modes is automatically accomplished. Further the manual operation torque of the zooming ring can be either adjusted with a volume control device or automatically maintained at a constant level. Further, if focusing is done when the zoom is set for manual operation, any variation in the angle of field due to a pumping phenomenon is corrected with a correcting circuit.
摘要翻译：本发明提供了一种镜头筒装置，其分配在手动和自动操作模式之间的有意切换，并且允许快速调整关于物体的条件。在该装置中，离合器机构的齿轮移动板连接到变焦或聚焦环的外齿轮，离合器机构的齿轮固定板连接到变焦电动机，齿轮移动板由离合器通过螺旋弹簧和移动齿轮操作电机，以连接和断开固定板。当离合器机构断开时，可动盘和螺旋弹簧能够通过推力轴承自由旋转。通过基于用于变焦开关的操作控制信号操作离合器机构，自动完成手动和电动操作模式之间的切换。此外，变焦环的手动操作扭矩可以使用音量控制装置进行调节，也可以自动维持在恒定水平。此外，如果在为手动操作设定变焦时进行聚焦，则用校正电路校正由于泵送现象引起的场角的任何变化。

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