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    • 63. 发明授权
    • Camera shutter and viewfinder control apparatus
    • 相机快门和取景器控制装置
    • US4945379A
    • 1990-07-31
    • US391716
    • 1989-08-07
    • Nobuaki DateAkio SunouchiSyuichiro SaitoYoshitaka MurataYukio OgawaNobuo Tezuka
    • Nobuaki DateAkio SunouchiSyuichiro SaitoYoshitaka MurataYukio OgawaNobuo Tezuka
    • G03B7/081G03B9/16G03B19/12
    • G03B9/16G03B19/12G03B7/081
    • A shutter device for a still video camera comprises first and second shutter blades, a latch member and an unlatch member. The latch member latches the first blade at its moved position where an image pickup element is exposed to an image light. The first blade is kept latched for a preparatory exposure to correct a set exposure value on the basis of the output of the pickup element or for picking up a motion picture. The unlatch member releases the latching of the first blade. In one embodiment, the unlatch member is provided on the second blade to unlatch the first blade when the second blade is moved to terminate the exposure. In other embodiments, the unlatch member includes an electromagnet to unlatch the first blade.A still video camera comprises a view finder mirror and a mirror operating mechanism. The mechanism includes a motor and is arranged to retract and return the mirror relative to an optical path by utilizing a normal and a reverse rotation of the motor, respectively.In the disclosed embodiments, the camera further comprises a mechanism to maintain the mirror in the retracted condition and a shutter in the opened condition to operate in a motion video mode where an image pickup element is continuously exposed to an image light. The mechanism for setting in the motion video mode may be operable manually from the exterior of the camera or by connecting an external device to the camera.
    • 用于静止摄像机的快门装置包括第一和第二快门叶片,闩锁构件和解锁构件。 闩锁构件将第一刀片锁定在其图像拾取元件暴露于图像光的移动位置处。 第一刀片被保持锁定以进行准备曝光,以基于拾取元件的输出或拾取电影来校正设定的曝光值。 解锁构件释放第一刀片的锁定。 在一个实施例中,当第二刀片移动以终止曝光时,解锁构件设置在第二刀片上以解除第一刀片。 在其他实施例中,解锁构件包括用于解锁第一刀片的电磁体。 静止摄像机包括取景器镜和镜操作机构。 该机构包括电动机并且被布置成分别通过利用电动机的正常和反向旋转来相对于光路缩回并返回反射镜。 在所公开的实施例中,照相机还包括将反射镜保持在缩回状态的机构,以及处于打开状态的快门以运动视频模式操作,其中图像拾取元件连续地暴露于图像光。 用于在运动视频模式中设置的机构可以从照相机的外部手动操作或者通过将外部设备连接到相机来进行操作。
    • 67. 发明授权
    • Camera
    • 相机
    • US4779111A
    • 1988-10-18
    • US140630
    • 1988-01-04
    • Yukio OgawaToyotoshi SuzukiKiyoshi Alyfuku
    • Yukio OgawaToyotoshi SuzukiKiyoshi Alyfuku
    • G03B1/58G03B17/18G03B17/42G03B1/18
    • G03B1/58G03B17/18G03B17/425
    • A camera is arranged such that when a film housed in a film cartridge is loaded into a film cartridge chamber of the camera with a leader portion of the film remaining outside the camera and upon closure of the film cartridge chamber, the leader portion of the film is automatically retracted into the camera and the film is wound onto a winding spool. This camera is characterized by providing a detector for detecting occurrence of an abnormal state of movement of the film during operation of retraction of the leader portion of the film into the camera, or during operation of winding the film onto the winding spool, and a warning system responsive to the abnormal-state detector to stop the movement of the film or to produce a warning of the occurrence of the abnormal state.
    • 相机被布置成使得当将容纳在胶卷暗盒中的胶卷装入照相机的胶片暗盒室中时,胶片的引导部分保持在相机外部并且在胶片暗盒关闭时,胶片的引导部分 自动缩回到相机中,并将胶片卷绕到卷轴上。 该相机的特征在于提供一种检测器,用于在胶片的引导部分缩回到照相机中或在将胶片卷绕到卷轴上的操作期间检测胶片的异常运动状态的发生,以及警告 系统响应异常状态检测器停止胶片的移动或产生异常状态发生的警告。