Centrifugal brakes for focal plane shutters
    1.
    发明授权
    Centrifugal brakes for focal plane shutters 失效
    焦平面百叶窗的离心式制动器

    公开(公告)号:US4204762A

    公开(公告)日:1980-05-27

    申请号:US942031

    申请日:1978-09-13

    IPC分类号: G03B9/28 G03B9/32

    CPC分类号: G03B9/32

    摘要: In a focal plane shutter having two curtains which unwind from shafts after being released, the shaft controls a master gear, causing a keying pin on the latter to activate braking action on the curtain at a time interval near the terminal end of running-down movement of the curtain, as a pair of heavy expanding frictional shoes are driven to rotate at accelerated speeds and pressed against the internal surface of a fixed drum by a centrifugal force. During the shutter cocking operation, the key is taken out of connection with the brake so that the driving torque of the film winding shaft is correspondingly decreased.

    摘要翻译: 在具有两个窗帘的焦平面挡板中,该帘幕在松开之后从轴展开,该轴控制主齿轮,使其上的键锁销在后退运动终端附近的时间间隔上启动帘幕上的制动作用 的帘子,因为一对重的膨胀摩擦鞋被驱动以加速的速度旋转并通过离心力压靠在固定的滚筒的内表面上。 在快门启动操作期间,钥匙与制动器连接而取出,使得卷绕轴的驱动扭矩相应地减小。

    Digital camera
    2.
    发明授权
    Digital camera 失效
    数码相机

    公开(公告)号:US4286849A

    公开(公告)日:1981-09-01

    申请号:US009806

    申请日:1979-02-06

    IPC分类号: G03B7/08 G03B7/091 G03B7/097

    CPC分类号: G03B7/097 G03B7/0807

    摘要: A digital camera with five automatic exposure modes is provided with corresponding individual cards upon selective insertion into the camera to effect the operation of either or both of the shutter and diaphragm in accordance with the digital output of a computer through logic selection circuits as the mode information on the inserted card is read into a binary coded decimal counter controlling operation of the logic circuits. When the card is absent from the camera, a first controlling push button for sequential display of the modes is rendered effective to pass a pulse train to the counter so that upon release of the button, the current mode displayed can be set. The card further includes information relating to the determination of whether or not to give a sound warning signal which occurs, in one embodiment, when the film nears the terminal end of footage. In another embodiment, the buzzer is utilized to assist in releasing not only a first but also an additional three buttons for setting exposure factors and a number of film frames available just after a desired symbol or digital value appears in the display as they are sequentially presented.

    摘要翻译: 具有五种自动曝光模式的数码相机在选择性地插入相机中时具有相应的单独的卡,以通过作为模式信息的逻辑选择电路根据计算机的数字输出来实现快门和隔膜中的任一个或两者的操作 在插入的卡上读入二进制编码十进制计数器来控制逻辑电路的操作。 当相机不存在卡时,用于顺序显示模式的第一控制按钮被有效地将脉冲串传递到计数器,使得在释放按钮时,可以设置显示的当前模式。 在一个实施例中,该卡还包括关于是否发出声音警告信号的确定的信息,当电影接近镜头的终端时。 在另一个实施例中,蜂鸣器用于帮助不仅释放第一个而且还附加三个按钮,用于设置曝光因子,并且在按顺序显示之后显示器中出现期望的符号或数字值之后可用的胶片帧数量 。

    Camera having a release control device
    4.
    发明授权
    Camera having a release control device 失效
    相机具有释放控制装置

    公开(公告)号:US4219260A

    公开(公告)日:1980-08-26

    申请号:US883904

    申请日:1978-03-06

    IPC分类号: G03B7/083 G03B9/64 G05B13/02

    CPC分类号: G03B7/083

    摘要: The present invention relates to a camera having an exposure control device designed so that the light measurement, the exposure condition determination and the photographing operation are carried out by means of a release means including an electromagnet element to be controlled by means of a plural number of switches operating successively with the release operation of the camera. The invention is characterized in that the time at which the output signal of the control circuit for controlling the operation of the camera after the light measurement in accordance with the magnitude of the output signal of the light measuring means is controlled so as to be delayed in such a manner that a correct operation can be obtained even if the light measuring time is short.

    摘要翻译: 本发明涉及一种具有曝光控制装置的相机,该曝光控制装置被设计成使得光测量,曝光条件确定和拍摄操作通过包括通过多个 开关随着照相机的释放操作而连续工作。 本发明的特征在于,根据光测量装置的输出信号的大小来控制用于控制光测量之后的照相机的操作的控制电路的输出信号的时间,以便被延迟 即使光测量时间短,也能够得到正确的动作。

    Motor drive unit for a camera
    5.
    发明授权
    Motor drive unit for a camera 失效
    摄像机的电机驱动单元

    公开(公告)号:US4176936A

    公开(公告)日:1979-12-04

    申请号:US861905

    申请日:1977-12-19

    CPC分类号: G03B17/425 G03B7/0807

    摘要: A motor drive unit adapted for use with a camera having a motorized shutter speed adjusting device. When a continuous series of frame exposures are to be made at a predetermined frame frequency, the set value of shutter time in the camera is made to be compared with the longest possible shutter time dependent upon that frame frequency by a comparator provided in the motor drive unit. When the actual shutter time value exceeds the longest possible one, the motorized shutter speed adjusting device is actuated, causing the shutter time value to change itself to the longest possible value.

    摘要翻译: 适用于具有电动快门速度调节装置的相机的电机驱动单元。 当以预定的帧频率进行连续的帧曝光系列时,将照相机中的快门时间的设定值与通过电动机驱动器中提供的比较器相关的取决于该帧频的最长可能的快门时间进行比较 单元。 当实际快门时间值超过最长时间时,电动快门速度调节装置被启动,使得快门时间值自身改变到最长可能的值。

    Camera with a device for protecting film against fogging
    6.
    发明授权
    Camera with a device for protecting film against fogging 失效
    相机具有防止雾化的装置

    公开(公告)号:US4178086A

    公开(公告)日:1979-12-11

    申请号:US892421

    申请日:1978-03-31

    CPC分类号: G03B17/42

    摘要: In the camera disclosed, an electromagnetic actuator is responsive to a timing pulse of short duration from an exposure control circuit for controlling the closing movement of a shutter. A permanent magnet may accidently be left latched and hold the rear curtain in cocked position after the timing pulse because of possible damage to an electromagnetic control circuit as a result of a battery short circuit. This may cause the film to fog during subsequent winding or rewinding. To prevent this, an indicator produces a visible indication either in the field of view of the camera finder or, in the case of remote shutter operation, outside the camera housing, that the rear curtain must be manually unlatched.

    摘要翻译: 在所公开的照相机中,电磁致动器响应于来自曝光控制电路的持续时间短的定时脉冲,用于控制快门的关闭运动。 永久磁铁可能意外地被锁定,并且在定时脉冲之后将后帘保持在起动位置,因为可能由于电池短路而损坏电磁控制电路。 这可能导致胶片在随后的卷绕或倒带过程中起雾。 为了防止这种情况,指示器在摄像机的视野中产生可见的指示,或者在远程快门操作的情况下,在摄像机壳体外部,必须手动解锁后帘。

    Cameras having a coordinated energy supply system for shutter release
    9.
    发明授权
    Cameras having a coordinated energy supply system for shutter release 失效
    具有用于快门释放的协调能量供应系统的相机

    公开(公告)号:US4200374A

    公开(公告)日:1980-04-29

    申请号:US935878

    申请日:1978-08-23

    CPC分类号: G03B9/58 G03B7/0807 G03B7/26

    摘要: A camera having a control system for coordinating the release actuator and electronic shutter with either one of a battery and an electric generator incorporated therein. As the battery has lost electrical energy, the removal of the battery from the camera enables the coordinating system to restrict the manual setting of an exposure time within faster limits and to supply electrical power from the generator to at least that portion of the automatic exposure control circuit which contributes to manual exposure control during the second stroke of the shutter release button, provided that the necessary mechanical energy for driving the generator was created and stored on suitable means during the preceding cycle of film winding operation.

    摘要翻译: 一种具有控制系统的照相机,其用于使释放致动器和电子快门与其中并入的电池和发电机中的任一个协调。 当电池已经失去电能时,电池从相机中的移除使得协调系统能够将曝光时间的手动设置限制在更快的范围内,并将发电机的电力提供给至少该部分自动曝光控制 在快门释放按钮的第二次行程期间有助于手动曝光控制的电路,只要在胶卷卷绕操作的前一循环期间产生用于驱动发生器的必要的机械能并将其存储在合适的装置上。

    Electronically operated magnetic control device for camera
    10.
    发明授权
    Electronically operated magnetic control device for camera 失效
    电子电磁式控制装置

    公开(公告)号:US4196995A

    公开(公告)日:1980-04-08

    申请号:US917330

    申请日:1978-06-20

    IPC分类号: G03B9/62 G03B7/083 G03B9/58

    CPC分类号: G03B9/58 G03B7/083

    摘要: The disclose circuit energizes a magnetic winding of a shutter actuating device. A constant voltage circuit is connected across the magnetic winding, or between the power supply terminal of the magnetic winding and a basic potential to ensure that the response of the armature of the actuating device to the output of a timing circuit is stabilized despite variation in the voltage of an electrical power source. This produces the advantage of substantially improving the accuracy of exposure control, because the closing operation of the shutter is controlled through movement of the armature.

    摘要翻译: 公开的电路激励快门驱动装置的磁性绕组。 恒定电压电路跨过磁性绕组,或者在磁性绕组的电源端子和基本电位之间连接,以确保致动装置的电枢对定时电路的输出的响应稳定,尽管在 电源的电压。 这产生了显着提高曝光控制的精度的优点,因为通过电枢的移动来控制快门的关闭操作。