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    • 7. 发明授权
    • Electronic flash apparatus
    • 电子闪光装置
    • US4657367A
    • 1987-04-14
    • US759908
    • 1985-07-29
    • Hiroyuki Kataoka
    • Hiroyuki Kataoka
    • G03B7/16G03B15/05
    • G03B15/05G03B2215/0528
    • An electronic flash apparatus having a first trigger circuit for causing a main light source to start firing, a first capacitor for firing the main light source, a second trigger circuit for causing a preliminary light source to start firing, a second capacitor for firing the preliminary light source, and a circuit for producing a trigger signal for preliminary lighting when a preliminary illumination is carried out, wherein the second capacitor is connected in common to the main and preliminary light sources, and there is provided a preliminary lighting changeover circuit responsive to selection of a bounced-flash mode for changing the application of the trigger signal from the second trigger circuit to the first trigger circuit.
    • 一种具有用于使主光源开始点火的第一触发电路的电子闪光装置,用于点燃主光源的第一电容器,用于使初步光源开始点火的第二触发电路,用于烧制初步光源的第二电容器 光源,以及用于在进行预备照明时产生用于预备照明的触发信号的电路,其中第二电容器与主光源和初步光源共同连接,并且提供响应于选择的预备照明切换电路 用于将触发信号从第二触发电路应用改变到第一触发电路的反弹模式。
    • 8. 发明授权
    • Flash photographing system
    • 闪光拍摄系统
    • US4615599A
    • 1986-10-07
    • US723331
    • 1985-04-15
    • Hiroyuki KataokaMasanori YamadaNobuyuki Suzuki
    • Hiroyuki KataokaMasanori YamadaNobuyuki Suzuki
    • G03B7/16G03B15/03
    • G03B7/16
    • A flash device for a photographic camera is arranged either to inhibit a flashing action or to shift the control mode of the camera from flash photography to daylight photography in cases where an object to be photographed is located outside of the adequately operatable range of distance. A pre-flashing action is performed to detect a distance to the object when a main capacitor is charged to a given level before the capacitor is amply charged for flash photography. Then flash photographing is performed at an aperture value determined on the basis of the detected distance when the distance is within the adequately operatable distance range. In the case where the detected distance is outside of the adequately operatable distance range, the main capacitor is further charged for an increased flashing power. After that, a distance to the object is again detected by a second pre-flashing action before the flash photographing is carried out at an aperture value determined on the basis of the distance detected by the second pre-flashing action. The flash photographing arrangement thus permits seizing a shutter chance in flash photographing an object located at relatively short distance without waiting until the main capacitor is amply charged.
    • 用于照相机的闪光装置被设置为在拍摄对象位于可充分操作的距离范围之外的情况下,禁止闪光动作或将照相机的控制模式从闪光摄影切换到日光照相。 执行预闪动作,以便在将电容器充电至闪光摄影之前,将主电容器充电至给定电平时,检测到物体的距离。 然后,当距离在可充分操作的距离范围内时,基于检测到的距离确定的光圈值进行闪光拍摄。 在检测到的距离在适当可操作的距离范围之外的情况下,主电容器进一步充电以增加闪光功率。 之后,在以基于由第二预闪动动作检测到的距离确定的光圈值执行闪光拍摄之前,再次通过第二预闪动作来检测到物体的距离。 因此,闪光拍摄装置允许在快速拍摄位于相对较短距离的物体的情况下抓住快门机会,而不等待直到主电容器被充电。