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    • 3. 发明授权
    • Flash lighting unit for a camera
    • 相机闪光照明装置
    • US4464609A
    • 1984-08-07
    • US551491
    • 1983-11-14
    • Zenzo NakamuraTakashi UchiyamaShohei OhtakiTokuichi TsunekawaMasanori UchidoiYukio Mashimo
    • Zenzo NakamuraTakashi UchiyamaShohei OhtakiTokuichi TsunekawaMasanori UchidoiYukio Mashimo
    • G03B15/05H05B41/32H05B41/14
    • H05B41/325
    • A voltage detecting means is provided in a flash lamp firing circuit for detecting the attainment of the voltage of a storage capacitor to a satisfactory lamp firing voltage level to assure that a photographic camera associated with the flash lighting unit operates in a flash exposure range switched from a daylight exposure range only when a sufficient voltage is available to fire the lamp at the time of striking of the lamp. In one embodiment, the detecting means comprises two transistorized circuits having output terminals one of which is connected to the gate lead of a SCR in a discharge circuit of the lamp, and another output terminal which is arranged to be connectable to a light-emitting diode of the camera and therefrom connected to the gate lead of an electronic change-over switch for selection of the operating ranges of the camera, the light-emitting diode being arranged to be visible from the outside of the camera so that the operator is immediately aware if the storage capacitor voltage has attained the satisfactory firing level.
    • 电压检测装置设置在闪光灯点火电路中,用于检测存储电容器的电压达到满意的灯点火电压电平,以确保与闪光照明单元相关联的照相机在从 日光曝光范围仅在足够的电压可用于在点亮灯时点亮灯。 在一个实施例中,检测装置包括两个晶体管电路,其具有输出端子,其一个连接到灯的放电电路中的SCR的栅极引线,另一个输出端子被布置成可连接到发光二极管 并且由此连接到用于选择相机的操作范围的电子转换开关的栅极引线,所述发光二极管被布置为从相机的外部可见,使得操作者立即知道 如果存储电容器电压达到令人满意的放电电平。
    • 7. 发明授权
    • Flash light photographic system for camera
    • 相机用闪光照相系统
    • US4021824A
    • 1977-05-03
    • US583633
    • 1975-06-04
    • Takashi UchiyamaYukio MashimoZenzo NakamuraYoji Sugiura
    • Takashi UchiyamaYukio MashimoZenzo NakamuraYoji Sugiura
    • G03B15/05G03B7/16
    • G03B7/16
    • The present invention relates to the flash photographic system for camera which is characterized in that the system presents a safety device for preventing various misoperations generally apt to take place at the time of taking a photograph by using a flash light device. By means of the operation of this device, the shutter time is set at a certain determined time for taking a photograph under flash light with the shutter time setting means at the camera side whereby the flash light photographic mode setting signal can be obtained only when the light device is set at the state ready for flash lighting in such a manner that the camera is capable of taking a photograph under flash light only when this signal is obtained. According to a preferred embodiment in accordance with the present invention, even when the release operation is carried out so that the above mentioned flash light photographic mode setting signal is not obtained, the flash light device does not operate by means of the effect of the safety device so that the camera is automatically set in the state for taking photography under ordinary day light.
    • 本发明涉及一种用于相机的闪光摄影系统,其特征在于,该系统提供一种安全装置,用于防止通过使用闪光灯装置拍摄照片时通常易于发生的各种误操作。 通过该装置的操作,将快门时间设定在用于在闪光灯下拍摄照片的确定时间,其中快门时间设定装置在相机侧,由此仅当闪光灯照相模式设定信号 光装置被设置在准备闪光照明的状态,使得照相机仅在获得该信号时能够在闪光下拍摄照片。 根据本发明的优选实施例,即使执行了解除操作以使得没有获得上述闪光照相模式设置信号,闪光灯装置也不会通过安全的作用而操作 设备,使相机自动设置为在普通日光下拍摄的状态。