Shutter speed digital display device for cameras
    2.
    发明授权
    Shutter speed digital display device for cameras 失效
    快门速度数码相机显示装置

    公开(公告)号:US4067023A

    公开(公告)日:1978-01-03

    申请号:US624996

    申请日:1975-10-22

    CPC分类号: G03B17/20 G03B7/093

    摘要: A shutter speed digital display device for cameras equipped with both automatic and manual shutter speed controls is disclosed. A shutter speed display control circuit generates a first digital signal in accordance with the adjustment of the camera's shutter speed by an automatic shutter speed control circuit. The first digital signal is decoded and used to control a light-transmitting liquid crystal device display. In addition, when the camera is in a manual mode of operation, the first digital signal is compared with a second digital signal related to manually adjusted shutter speed. If the comparisons are equal, a coincidence indicator is energized.

    摘要翻译: 公开了一种用于配备有自动和手动快门速度控制的相机的快门数字显示装置。 快门速度显示控制电路根据通过自动快门速度控制电路对相机的快门速度的调节产生第一数字信号。 第一数字信号被解码并用于控制透光液晶显示器。 此外,当相机处于手动操作模式时,将第一数字信号与与手动调节的快门速度相关的第二数字信号进行比较。 如果比较相等,则重合指示灯通电。

    Exposure control device in a camera
    3.
    发明授权
    Exposure control device in a camera 失效
    相机中的曝光控制装置

    公开(公告)号:US3996593A

    公开(公告)日:1976-12-07

    申请号:US618598

    申请日:1975-10-01

    CPC分类号: G03B7/085

    摘要: A method and apparatus for automatic iris control of cameras having an exposure value indicator located within the camera's viewfinder. The indicator emits light such that a photosensor when moving over the indicator face, senses the light and through associated circuitry and mechanisms stops the movement of an adjusting iris.

    摘要翻译: 一种用于自动光圈控制相机的方法和装置,其具有位于相机取景器内的曝光值指示器。 指示器发出光,使得光电传感器在指示器表面上移动时,感测光并通过相关联的电路和机构停止调节光圈的移动。

    Exposure control device
    6.
    发明授权
    Exposure control device 失效
    曝光控制装置

    公开(公告)号:US4141633A

    公开(公告)日:1979-02-27

    申请号:US845746

    申请日:1977-10-26

    CPC分类号: G03B7/087

    摘要: An automatic exposure control circuit for a camera is disclosed. The circuit is capable of automatically controlling the shutter speed when the diaphragm is manually set, and is capable of automatically controlling the diaphragm opening when the shutter speed is manually set. In both cases the same transducer is used for the manual diaphragm or shutter speed selection.

    摘要翻译: 公开了一种用于照相机的自动曝光控制电路。 当手动设置隔膜时,该电路能够自动控制快门速度,并且在手动设定快门速度时能够自动控制光圈开度。 在这两种情况下,相同的传感器用于手动光圈或快门速度选择。

    Exposure control device
    7.
    发明授权
    Exposure control device 失效
    曝光控制装置

    公开(公告)号:US4123764A

    公开(公告)日:1978-10-31

    申请号:US644018

    申请日:1975-12-24

    IPC分类号: G01J1/44 G03B7/081

    CPC分类号: G03B7/087

    摘要: An automatic exposure control device is disclosed which is capable of aperture dominant and shutter speed dominant exposure control operation as well as manual exposure control operation. A logarithmic compression circuit including transducers develops voltages directly dependent upon the APEX indicating quantities Bv, Sv, Tv and Av. For automatic operation one of the voltages dependent upon Tv or Av is set into the circuit by manual control, and the other is calculated by the APEX indication formula Bv + Sv = Tv + Av, and applied as an output to the shutter control or aperture control mechanism. An indicator means is connected in the circuit to provide Tv or Av indications depending on the exposure control mode selected for the camera.

    摘要翻译: 公开了一种自动曝光控制装置,其能够进行光圈显示和快门速度优先曝光控制操作以及手动曝光控制操作。 包括换能器的对数压缩电路直接依赖于指示量Bv,Sv,Tv和Av的APEX产生电压。 对于自动操作,通过手动控制将依赖于Tv或Av的电压中的一个设置到电路中,另一个通过APEX指示公式Bv + Sv = Tv + Av计算,并作为输出施加到快门控制或光圈 控制机制。 电路中连接有一个指示装置,以根据为相机选择的曝光控制模式提供电视或视频指示。

    Automatic exposure control device for single lens reflex camera
    8.
    发明授权
    Automatic exposure control device for single lens reflex camera 失效
    单反相机自动曝光控制装置

    公开(公告)号:US4099188A

    公开(公告)日:1978-07-04

    申请号:US721637

    申请日:1976-09-08

    IPC分类号: G03B7/083 G03B7/085 G03B7/08

    CPC分类号: G03B7/085 G03B7/083

    摘要: An automatic exposure control device for a single lens reflex camera characterized in that a stop determining member which stops down diaphragm blades by rotation thereof at a predetermined speed is released by a shutter release plate. A time constant circuit is started to operate simultaneously with the start of rotation of said stop determining member, and the rotation of said stop determining member is stopped by an electromagnetic mechanism when a time has lapsed. The length of said time linearly corresponds to the stop size determined by APEX operation based on the output voltage of said time constant circuit as an operation factor.

    摘要翻译: 一种用于单镜头反光照相机的自动曝光控制装置,其特征在于,通过快门释放板释放通过其以预定速度旋转来阻挡光阑叶片的停止确定构件。 时间常数电路开始与所述停止确定部件的旋转开始同时运行,并且当时间已经过去时,所述停止确定部件的旋转被电磁机构停止。 所述时间的长度线性地对应于基于作为操作因子的所述时间常数电路的输出电压的由APEX操作确定的停止尺寸。

    Exposure display device for a single lens reflex camera
    9.
    发明授权
    Exposure display device for a single lens reflex camera 失效
    曝光显示装置,用于单镜头反射照相机

    公开(公告)号:US4051503A

    公开(公告)日:1977-09-27

    申请号:US612945

    申请日:1975-09-12

    CPC分类号: G03B17/20

    摘要: An exposure display device for a single lens reflex camera including light display elements for displaying either shutter speed or diaphragm value is disclosed. Nominal values representing either shutter speed or diaphragm value are marked on a glass plate disposed in the vicinity of the focusing plate of the camera's viewfinder. A first display section, comprising a first set of light display elements aligned with (and, if desired, located inbetween) the nominal values, creates a first exposure component (e.g. diaphragm value or shutter speed) display whose value is related to predetermined exposure conditions, such as object brightness, film sensitivity and the other exposure component (e.g. shutter speed or diaphragm value). A second display section, comprising a second set of light display elements, also aligned with the nominal values, creates a second display of the exposure component chosen to be displayed. The second display represents the actual position of the camera element controlling the displayed exposure component.

    Magnet warning device for focal plane electric shutter camera
    10.
    发明授权
    Magnet warning device for focal plane electric shutter camera 失效
    用于焦平面电动快门摄像机的磁铁报警装置

    公开(公告)号:US4034390A

    公开(公告)日:1977-07-05

    申请号:US680568

    申请日:1976-04-27

    IPC分类号: G03B9/08 G03B9/34

    CPC分类号: G03B9/34

    摘要: A mechanical arrangement is disclosed for blocking the electric shutter operation of a camera when the rear shutter holding electromagnet is not energized sufficiently to hold the rear shutter. A pair of gears for the front and rear shutters, respectively, are mechanically linked to the shutters to prevent their running when the gears are held stationary. A release controlled lever holds the front shutter gear stationary, and the stationary position of the front shutter gear holds the rear shutter gear stationary. When the release button is depressed the front gear is released from the lever and rotates as the front shutter runs to an unblocking position. Rotation of the front gear frees the rear gear, but the rear shutter is held by the electromagnet until the exposure time is completed. Thereafter the electromagnet is deenergized causing the rear shutter to run to its blocking position and the rear shutter gear to rotate. If the electromagnet is not sufficiently strong, e.g. because of a reduction in battery power, to hold the rear shutter, both shutters will start to run and both gears will start to rotate simultaneously. A lever held in a first position by the starting position of the rear shutter gear, moves to a second, blocking position, when the rear shutter gear starts to rotate. When in the blocking position, the lever stops further rotation of the front shutter gear which, in turn, stops further rotation of the rear shutter gear. The operator, as a result, hearing no running sound of the shutters knows there is a failure in the electromagnet circuitry.

    摘要翻译: 公开了一种机械装置,用于在后挡板保持电磁体没有被充分地通电以保持后挡板时阻挡相机的电动快门操作。 分别用于前百叶窗和后百叶窗的一对齿轮机械地连接到百叶窗上,以防止当齿轮保持静止时它们的运行。 释放控制的杆将前快门齿轮固定住,并且前快门齿轮的静止位置保持后快门齿轮静止。 当释放按钮被按下时,前挡板从杠杆释放并且随着前快门运行到解锁位置而旋转。 前轮的旋转释放后齿轮,但后挡板由电磁铁保持,直到曝光时间完成。 此后,电磁铁被断电,导致后挡板运行到其阻挡位置,并且后挡板齿轮旋转。 如果电磁体不够牢固,例如 由于电池功率的降低,为了保持后挡板,两个快门将开始运行,两个齿轮将同时开始旋转。 当后挡板齿轮开始旋转时,由后挡板齿轮的起始位置保持在第一位置的杠杆移动到第二阻挡位置。 当处于阻挡位置时,杠杆停止前快门齿轮的进一步旋转,其进而停止后快门齿轮的进一步旋转。 因此,操作者听不到百叶窗的运行声音,知道电磁铁电路有故障。