Indicator circuit for electronic flash apparatus
    1.
    发明授权
    Indicator circuit for electronic flash apparatus 失效
    电子闪光灯装置指示电路

    公开(公告)号:US4100459A

    公开(公告)日:1978-07-11

    申请号:US671736

    申请日:1976-03-30

    摘要: An electronic flash apparatus is provided with a display element positioned in the view-finder of a photographic camera so that the operator is immediately aware if the flash tube has been fired in response to the closure of the synchronous switch. The light emitting operation of this display element is controlled by use of a signal generator arranged to be responsive to the occurrence of discharge through the flash tube of the flash apparatus. With this apparatus, therefore, the operator may rely upon the appearance of this display element to insure that the firing is effected by the flash apparatus even when the object-to-camera distance is relatively small.

    摘要翻译: 电子闪光装置设置有位于照相机的取景器中的显示元件,使得操作者立即知道闪光管是否已经响应于同步开关的闭合而被点亮。 该显示元件的发光操作通过使用信号发生器来控制,该信号发生器布置成响应于通过闪光装置的闪光灯管的放电发生。 因此,利用该装置,操作者可以依靠该显示元件的外观来确保即使当对象相机距离相对较小时,闪光装置也可以进行点火。

    Safety device for an exposure amount control equipment
    3.
    发明授权
    Safety device for an exposure amount control equipment 失效
    曝光量控制设备的安全装置

    公开(公告)号:US4126877A

    公开(公告)日:1978-11-21

    申请号:US673053

    申请日:1976-04-02

    摘要: The present invention relates to a safety device for exposure amount control equipment consisting of a camera and an electronic flash device, including a detecting circuit for detecting the charge voltage of the storage capacitor of the electronic flash device and the voltage of the power source and producing two different electrical signals in accordance with the detected voltages so as to prevent flash light photography with improper exposure amount and a lock member for preventing the movement of a shutter release mechanism of the camera in accordance with the electrical signal produced in the detecting circuit when the detected voltages are lower than a certain determined value.

    摘要翻译: 本发明涉及一种由相机和电子闪光装置组成的曝光量控制装置的安全装置,包括用于检测电子闪光装置的存储电容器的充电电压的检测电路和电源的电压并产生 根据检测到的电压的两个不同的电信号,以便防止以不适当的曝光量进行的闪光灯拍摄;以及锁定构件,用于根据检测电路中产生的电信号防止相机的快门释放机构的移动, 检测电压低于某一确定值。

    Data printer for a camera
    4.
    发明授权
    Data printer for a camera 失效
    相机的数据打印机

    公开(公告)号:US4181416A

    公开(公告)日:1980-01-01

    申请号:US731941

    申请日:1976-10-13

    IPC分类号: G03B17/24 G03B15/05

    CPC分类号: G03B17/24 G03B2217/243

    摘要: A photographic data recording device for a camera for photographically recording some data on film together with a photographic image. The device includes a capacitor, a charging circuit for the capacitor which responds to the release of the shutter for commencing charging and an electronic flash device operating in response to the capacitor discharge to illuminate the data. A control device automatically causes the capacitor to discharge electricity to allow the electronic flash device to emit a flash when the charge of the capacitor reaches a preset level of potential and which prevents the capacitor from discharging when the charge is below the preset level of potential. A display lamp may be utilized to indicate when the charged voltage of the capacitor reaches a preset level.

    摘要翻译: 一种照相机的照相数据记录装置,用于照相摄影胶片上的一些数据以及摄影图像。 该装置包括电容器,用于响应于用于开始充电的快门的释放的电容器的充电电路以及响应于电容器放电而工作以照亮数据的电子闪光装置。 控制装置自动使电容器放电,以允许电子闪光装置在电容器的电荷达到预设电位时发出闪光,并且当电荷低于预设的电位水平时防止电容器放电。 可以使用显示灯来指示电容器的充电电压何时达到预设电平。