Camera having program shutter
    42.
    发明授权
    Camera having program shutter 失效
    相机具有程序快门

    公开(公告)号:US4358188A

    公开(公告)日:1982-11-09

    申请号:US39388

    申请日:1979-05-15

    CPC分类号: G03B7/087 G03B7/089

    摘要: In the disclosed camera with a program shutter, exposure control with a desired combination of shutter time and diaphragm value is made possible without variation of the gradient of the program curve, by shifting the program constant a specific amount.

    摘要翻译: 在所公开的具有程序快门的相机中,通过将程序常数移动到特定量,使得具有期望的组合快门时间和光圈值的曝光控制成为可能,而不改变节目曲线的梯度。

    Camera having electromagnetic release control
    43.
    发明授权
    Camera having electromagnetic release control 失效
    相机具有电磁释放控制

    公开(公告)号:US4351597A

    公开(公告)日:1982-09-28

    申请号:US4269

    申请日:1979-01-17

    CPC分类号: G03B17/425

    摘要: A release control device for controlling initiation of a release of various portions of a camera by means of an electromagnet. When a shutter release button is maintained depressed to make a continuous series of frame exposures as by the help of a motor drive unit, the device defers initiation of each release operation pending completion of the returning movement of a resetting mechanism to its idle position.

    摘要翻译: 一种释放控制装置,用于通过电磁体控制照相机各部分的释放。 当快门释放按钮被保持按压以通过电机驱动单元的帮助进行连续的一系列框架曝光时,在复位机构返回到其空转位置的完成之前,该装置延迟每次释放操作的启动。

    Automatic exposure control camera with means to lock continuously
renewed exposure control data in a memory
    44.
    发明授权
    Automatic exposure control camera with means to lock continuously renewed exposure control data in a memory 失效
    自动曝光控制相机,具有在存储器中不断更新曝光控制数据的方式

    公开(公告)号:US4302083A

    公开(公告)日:1981-11-24

    申请号:US127072

    申请日:1980-03-04

    CPC分类号: G03B7/093

    摘要: In the automatic exposure control camera disclosed, a memory has data stored therein on the basis of the object brightness and is periodically reset by a reset device to obtain new brightness data, while an exposure control controls exposure on the basis of the data. A signal device ordinarily produces a first signal but locks into a second signal after an external operation. A gate arrangement between the memory and the reset device passes reset signals to the memory, but responds to the second signal to inhibit the reset so as to latch the content of the memory.

    摘要翻译: 在所公开的自动曝光控制相机中,存储器根据对象亮度存储数据,并且由复位装置周期性地重置以获得新的亮度数据,而曝光控制则根据数据控制曝光。 信号装置通常产生第一信号,但在外部操作之后锁定到第二信号中。 存储器和复位装置之间的栅极布置将复位信号传递到存储器,但是响应第二信号以禁止复位以锁存存储器的内容。

    Photometric circuit for camera
    45.
    发明授权
    Photometric circuit for camera 失效
    相机光度计

    公开(公告)号:US4247186A

    公开(公告)日:1981-01-27

    申请号:US50124

    申请日:1979-06-19

    IPC分类号: G03B7/081 G01J1/44 G03B7/083

    CPC分类号: G01J1/44 G03B7/08

    摘要: A photometric circuit for a camera including a first operational amplifier with a photo-electric element connected between its inverted and non-inverted input terminals and, a logarithmic compression diode connected between the output terminal and the inverted input terminal of the first operational amplifier, thus providing a voltage corresponding to the logarithmic value of the brightness of an object to be photographed at the output terminal of the first operational amplifier.A second operational amplifier has a plurality of temperature compensating commonly polarized diodes connected in parallel between its inverted input terminal and the output terminal. A first constant voltage is applied to the non-inverted input terminal of the second operational amplifier while a second constant voltage is applied through a resistor to the inverted input terminal of the second operatonal amplifier, thereby providing temperature-compensation of the output voltage of said first operational amplifier.

    摘要翻译: 一种用于照相机的测光电路,包括连接在其反相和非反相输入端子之间的光电元件的第一运算放大器和连接在第一运算放大器的输出端和反相输入端之间的对数压电二极管,因此 提供与在第一运算放大器的输出端子处拍摄的物体的亮度的对数值相对应的电压。第二运算放大器具有多个温度补偿共极化二极管,并联连接在其反相输入端和 输出端子。 第一恒定电压施加到第二运算放大器的非反相输入端,而第二恒定电压通过电阻施加到第二操作放大器的反相输入端,从而提供所述第二运算放大器的输出电压的温度补偿 第一运算放大器。

    Automatic exposure control system for single reflex camera
    47.
    发明授权
    Automatic exposure control system for single reflex camera 失效
    单反相机自动曝光控制系统

    公开(公告)号:US4203660A

    公开(公告)日:1980-05-20

    申请号:US904819

    申请日:1978-05-11

    IPC分类号: G03B7/085 G03B19/20 G03B7/00

    CPC分类号: G03B19/20 G03B7/085

    摘要: A camera which permits change-over between different light measuring systems is disclosed. The camera includes a first light measuring element which measures light coming from an object to be photographed and an operational amplifier responsive to the element. A light measurement information producing circuit is included for producing a light measurement information signal for exposure computation. A change-over device is connected between the light measurement information producing circuit and the operational amplifier. The change-over device is arranged to be shiftable between a first position wherein the operational amplifier is connected to the light measurement information producing circuit and a second position wherein the operational amplifier is not so connected. An accessory device is attachable to the camera body. The accessory device includes a second light receiving element for measuring light from the object within a light measurement range different from that of the first light receiving element and another operational amplifier responsive thereto. A terminal is responsive to the signal from the latter operational amplifier. The terminal is disposed at the second position of the change-over device so that the signal from the latter operation is applied to the light measurement information producing circuit when the change-over device is in this position.

    摘要翻译: 公开了允许不同光测量系统之间切换的照相机。 相机包括测量来自被拍摄物体的光的第一光测量元件和响应于元件的运算放大器。 光测量信息产生电路包括用于产生用于曝光计算的光测量信息信号。 在光测量信息产生电路和运算放大器之间连接有切换装置。 转换装置被布置成可以在运算放大器连接到光测量信息产生电路的第一位置和运算放大器未被连接的第二位置之间移位。 附件装置可附接到照相机主体。 附属装置包括用于在与第一光接收元件不同的光测量范围内测量来自物体的光的第二光接收元件和对其响应的另一运算放大器。 终端响应于来自后者运算放大器的信号。 端子设置在转换装置的第二位置,使得当转换装置处于该位置时,来自后一操作的信号被施加到光测量信息产生电路。

    Camera with a device for protecting film against fogging
    49.
    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。