Exposure time control device
    82.
    发明授权
    Exposure time control device 失效
    曝光时间控制装置

    公开(公告)号:US4464032A

    公开(公告)日:1984-08-07

    申请号:US410692

    申请日:1982-08-23

    IPC分类号: G03B9/04 G03B9/62 G03B9/64

    CPC分类号: G03B9/04 G03B9/62

    摘要: An exposure time control device includes electromagnets for causing corresponding leading and trailing shutter curtains in a camera to travel. A second timer circuit, which is adjustable, is arranged to count a correction time in response to operation of a first timer circuit which counts an exposure time for the camera. After the lapse of the correction count time of the second timer circuit, the electromagnet for the leading shutter curtain is actuated, and then the electromagnet for the trailing shutter curtain is actuated after the lapse of the exposure count time of the first timer circuit. Exposure time errors which would otherwise result from overlapping of the shutter curtains and response delay of the trailing shutter curtain electromagnet, thus can be corrected by adjustment of the second timer circuit.

    摘要翻译: 曝光时间控制装置包括用于使照相机中相应的前和后帘快门行进的电磁铁。 可调节的第二定时器电路被布置成响应于计数相机的曝光时间的第一定时器电路的操作来计数校正时间。 在第二定时器电路的校正计数时间经过之后,用于引导快门帘幕的电磁体被致动,然后在经过第一定时器电路的曝光计数时间之后用于后帘快门帘幕的电磁体被致动。 因此,可以通过调节第二定时器电路来校正否则由快门帘幕的重叠和后帘帘式电磁铁的响应延迟引起的曝光时间误差。

    Camera
    83.
    发明授权
    Camera 失效
    相机

    公开(公告)号:US4431287A

    公开(公告)日:1984-02-14

    申请号:US267045

    申请日:1981-05-26

    IPC分类号: G03B7/087 G03B7/081 G03B7/20

    摘要: This invention relates to cameras capable of making exposures in shutter priority, or manual and program modes. Since in the program mode the shutter time and diaphragm aperture are unequivocally determined, the computed value of shutter time is liable to exceed a limit such that effects of shaking of the operator's hand become noticeable. The present invention solves this problem by making use of the shutter dial used for selection of the shutter priority or manual mode to set the limit value. When a longer shutter time than this limit is derived, the diaphragm aperture is readjusted in accordance with this limit of shutter time and the object brightness, while the shutter is adjusted to that limit value.

    摘要翻译: 本发明涉及能够进行快门优先曝光的照相机,或手动和程序模式。 由于在程序模式中明确地确定了快门时间和光阑孔径,因此计算出的快门时间值容易超过操作者的手抖动的效果。 本发明通过使用用于选择快门优先级或手动模式的快门拨盘来设置限制值来解决这个问题。 当获得比此限制更长的快门时间时,根据快门时间和对象亮度的这个限制来重新调整光阑孔径,同时将快门调整到该限制值。

    Shutter time control camera
    84.
    发明授权
    Shutter time control camera 失效
    快门时间控制相机

    公开(公告)号:US4375915A

    公开(公告)日:1983-03-08

    申请号:US337469

    申请日:1982-01-06

    CPC分类号: G03B7/093 G03B9/08 G03B9/62

    摘要: A camera includes a drive source which generates a driving torque for moving shutter curtains in response to electrical battery power, and controls the running of the shutter curtains by the driving torque from the drive source. When the battery voltage is below a predetermined value, accurate shutter time control is maintained by providing circuitry which alters the shutter time to a certain value which is greater than a preset exposure value, so that exposure error is as small as possible even when the running speed of the shutter curtains is inaccurate due to lower battery voltage.

    摘要翻译: 照相机包括驱动源,其响应于电池电力产生用于移动快门帘幕的驱动力矩,并且通过来自驱动源的驱动转矩来控制快门帘幕的行进。 当电池电压低于预定值时,通过提供将快门时间改变为大于预设曝光值的特定值的电路来维持精确的快门时间控制,使得即使当运行中的曝光错误也尽可能小时 由于电池电压较低,快门帘的速度不准确。

    Electromagnetically driven shutter device
    85.
    发明授权
    Electromagnetically driven shutter device 失效
    电磁驱动快门装置

    公开(公告)号:US4353632A

    公开(公告)日:1982-10-12

    申请号:US221632

    申请日:1980-12-31

    CPC分类号: G03B9/18

    摘要: In the disclosed device, an electromagnetic drive source in the form of a stator and rotor opens and closes shutter blades. A magnet sensor senses the displacement phase of the rotor, or any member operated by the rotor, to produce a timing signal at a predetermined position of the shutter during exposure. According to an embodiment of the invention, the timing signal is used for synchronizing a flash unit and the sensor is a reed switch.

    摘要翻译: 在所公开的设备中,定子和转子形式的电磁驱动源打开和关闭快门叶片。 磁体传感器感测转子或由转子操作的任何部件的位移相位,以在曝光期间在快门的预定位置处产生定时信号。 根据本发明的实施例,定时信号用于使闪光单元同步,传感器是簧片开关。

    Battery-voltage indicator of camera
    86.
    发明授权
    Battery-voltage indicator of camera 失效
    相机电池电压指示灯

    公开(公告)号:US4327985A

    公开(公告)日:1982-05-04

    申请号:US215645

    申请日:1980-12-12

    CPC分类号: G03B17/18

    摘要: In a voltage indicator of a camera, the voltage value of the battery is converted into digital value through analog-to-digital conversion processing. Such digital signals are digitally expanded by converting equal difference variations thereof into equal ratio variations thereof. The digitally expanded signals are adapted to vary in accordance with variations of the battery voltage. Thus, the expanded digital signals energize an alarm to audibly indicate the value of the battery voltage.

    摘要翻译: 在相机的电压指示器中,电池的电压值通过模数转换处理转换为数字值。 这样的数字信号通过将其相等差异变化转换为相等的比例变化而进行数字扩展。 数字扩展的信号适于根据电池电压的变化而变化。 因此,扩展的数字信号激励警报以可听见地指示电池电压的值。

    Flash light photographic systems
    90.
    发明授权
    Flash light photographic systems 失效
    闪光照相系统

    公开(公告)号:US4187019A

    公开(公告)日:1980-02-05

    申请号:US824102

    申请日:1977-08-12

    IPC分类号: G03B7/081 G03B15/05 G03B7/16

    摘要: The present invention relates to various kinds of the flash light photographic systems consisting of a combination of either of the below mentioned cameras with either of the below mentioned flash light device;a camera CD presenting an input terminal of the information for controlling the diaphragm and the output terminal of the information for the set aperture,a flash light device SD presenting the output terminal of the information for controlling the diaphragm and the input terminal of the information of the set aperture,a camera CT presenting an input terminal of the information for controlling the diaphragm,a camera CA presenting an output terminal of the information of the set aperture,a flash light device ST presenting an output terminal of the information for controlling the diaphragm,a flash light device AS presenting an input terminal of the information of the set aperture.

    摘要翻译: 本发明涉及各种类型的闪光照相系统,其由以下提到的照相机中的任一种与下述闪光灯装置中的任一种组合构成; 相机CD,其呈现用于控制光圈的信息的输入端和用于设定光圈的信息的输出端;闪光灯装置SD,其呈现用于控制光阑的信息的输出端和输入端的信息 设置光圈,呈现用于控制光阑的信息的输入端的照相机CT,呈现设定光圈的信息的输出端的照相机CA,呈现用于控制光阑的信息的输出端的闪光装置ST ,闪光灯装置AS呈现设定光圈信息的输入端。