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    • 5. 发明授权
    • Single lens reflex camera
    • 单镜头反光相机
    • US4786929A
    • 1988-11-22
    • US111155
    • 1987-10-19
    • Hisashi HamadaMichihiro Shiina
    • Hisashi HamadaMichihiro Shiina
    • G03B19/12
    • G03B19/12
    • A single lens reflex camera having a reflex mirror and a light-blocking plate mounted therein for pivotal movement as a unit between a viewing and a photographing position. A driving mechanism is provided, having an electric motor for causing the pivotal movement of the reflex mirror and light-blocking plate. A manually operable mirror swing-up member causes the driving mechanism to swing up the reflex mirror and the plate to the photographing position. A switching member is operated at the beginning of the operation of detaching a taking lens from the camera and causes the driving mechanism to swing the mirror and plate down so as to place the reflex mirror and the light-blocking plate in the viewing position even though the mirror swing-up member has been operated.
    • 具有安装在其中的反射镜和遮光板的单透镜反射相机作为在观看和拍摄位置之间的单元的枢转​​运动。 提供一种驱动机构,其具有用于使反射镜和遮光板的枢转运动的电动机。 手动操作的镜面摆动构件使得驱动机构将反射镜和板向上摆动到拍摄位置。 在从摄像机分离拍摄镜头的操作开始时切换构件被操作,并且使得驱动机构将镜子和板向下摆动,以将反射镜和遮光板放置在观察位置,即使 镜面摆动构件已被操作。
    • 9. 发明授权
    • Camera
    • 相机
    • US5477298A
    • 1995-12-19
    • US241968
    • 1994-05-12
    • Michihiro ShiinaJun'ichi IwamotoFumio Iwai
    • Michihiro ShiinaJun'ichi IwamotoFumio Iwai
    • G02B7/04G02B7/08G02B7/10G03B5/00G03B17/04G03B3/10
    • G02B7/102
    • A camera having a zoom system which comprises a front lens group driven by a DC motor and a rear lens group driven by a stepping motor includes a motor control apparatus for controlling the DC motor and the stepping motor. The motor control apparatus voltage measuring means for measuring a voltage of a power source for driving the DC motor and the stepping motor, decision means for deciding as to whether the voltage is more than a predetermined value, means for simultaneously driving the DC motor and the stepping motor, if a decision is made that the voltage is more than the predetermined value, and means for driving only the DC motor and thereafter driving only the stepping motor, if the voltage is not more than the predetermined value.
    • 具有由DC电动机驱动的前透镜组和由步进电动机驱动的后透镜组的变焦系统的摄像机包括用于控制直流电动机和步进电动机的电动机控制装置。 用于测量用于驱动直流电动机和步进电动机的电源的电压的电动机控制装置电压测量装置,用于判定电压是否大于预定值的判定装置,用于同时驱动直流电动机和 如果判断为电压大于预定值,则仅在直流电动机上驱动,然后仅驱动步进电动机的装置,如果电压不大于预定值。