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    • 2. 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。
    • 9. 发明授权
    • Photographic camera with an extrinsic coordinating system
    • 具有外在协调系统的摄影相机
    • US4068243A
    • 1978-01-10
    • US721757
    • 1976-09-09
    • Susumu KozukiToshikazu IchiyanagiYoshiaki WatanabeTakashi UchiyamaAkio Sunouchi
    • Susumu KozukiToshikazu IchiyanagiYoshiaki WatanabeTakashi UchiyamaAkio Sunouchi
    • G03B17/00G03B9/08G03B17/38G03B7/08
    • G03B7/00G03B7/0807
    • An electrically operated extrinsic coordinating system for the light metering and exposure controlling circuits of a photographic camera, the camera also having incorporated therein an intrinsic coordinating system for those circuits, comprises first and second electronic switches connected in the respective power supply circuits for the light metering and exposure controlling circuits through respective interconnection channels to shunt the first and second switches of the intrinsic coordinating system, a delay circuit connected between the first and second electronic switches, and an operating switch arranged to be accessible from the outside of the camera and cooperative with the first electronic switch upon manual closure of the operating switch to actuate the light metering and exposure controlling circuits for the power supply in predetermined time-displaced relation to each other independently of the intrinsic coordinating system.
    • 一种用于照相机的测光和曝光控制电路的电操作的外在坐标系统,该照相机还在其中并入有用于那些电路的固有的协调系统,包括连接在相应电源电路中用于测光的第一和第二电子开关 以及曝光控制电路,通过相应的互连通道分流本征配置系统的第一和第二开关,连接在第一和第二电子开关之间的延迟电路,以及布置成可从相机的外部接近的操作开关, 第一电子开关,其手动关闭操作开关,以独立于内部协调系统彼此以预定的时间位移关系来驱动用于电源的计量和曝光控制电路。