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99 条记录 (耗时 0.028 秒)

    Automatic exposure control system for flash photography
    1.
    发明授权
    Automatic exposure control system for flash photography 失效
    用于闪光摄影的自动曝光控制系统

    公开(公告)号：US4083059A

    公开(公告)日：1978-04-04

    申请号：US717950

    申请日：1976-08-26

    申请人： Tokuichi Tsunekawa ,  Zenso Nakamura ,  Tetsuya Taguchi ,  Masanori Uchidoi ,  Hiroshi Aizawa ,  Takashi Uchiyama

    发明人： Tokuichi Tsunekawa ,  Zenso Nakamura ,  Tetsuya Taguchi ,  Masanori Uchidoi ,  Hiroshi Aizawa ,  Takashi Uchiyama

    IPC分类号： G03B15/05 ,  G03B15/03

    CPC分类号： G03B15/05 ,  G03B2215/05 ,  G03B2215/0514

    摘要： In a camera provided with a day-light exposure range and with a flash exposure range, an automatic exposure control system for controlling the iris of the camera in accordance with a computed exposure value and a preselected shutter time is associated with a flash exposure time range bracketing device in order to insure that the formation of a correct flash exposure aperture is effected with automatic selection of one of the bracketed exposure times despite an accidentally incorrect setting of the shutter dial of the camera which may be encountered particularly when the day-light exposure range is to be left for the flash exposure range without the necessary manipulation of the shutter dial therefor. The bracketing device of the present invention comprises three timing circuits in combination with a selector responsive to the position of the shutter dial for selecting either the first, or the second, or the third timing circuit for cooperation with an electronic switch controlling the period of actuation of the camera shutter when the shutter dial is set either within, or on the faster side of, or on the slower side of a possible flash exposure time range respectively, whereby the resultant actuation period is equal to either the shutter time preselected on the shutter dial, or the faster limit of, or the slower limit of the flash exposure time range respectively.

    Camera system
    3.
    发明授权
    Camera system 失效
    相机系统

    公开(公告)号：US4079385A

    公开(公告)日：1978-03-14

    申请号：US614644

    申请日：1975-09-18

    申请人： Zenzo Nakamura ,  Tokuichi Tsunekawa ,  Tetsuya Taguchi ,  Masanori Uchidoi ,  Hiroshi Aizawa ,  Takashi Uchiyama

    发明人： Zenzo Nakamura ,  Tokuichi Tsunekawa ,  Tetsuya Taguchi ,  Masanori Uchidoi ,  Hiroshi Aizawa ,  Takashi Uchiyama

    IPC分类号： G03B7/00 ,  G03B7/081 ,  G03B7/16 ,  G03B7/08

    CPC分类号： G03B7/16 ,  G03B7/00 ,  G03B7/087

    摘要： A selector circuit interrupted by an electrical signal from an attachment selectively mounted on the camera body and is connected in the light receiving circuit as well as the exposure determining circuit provided in the camera. When the above mentioned unit is mounted on the camera the exposure determining circuit provided in the camera is automatically connected from the light receiving circuit to the output terminal of the unit by means of the selector circuit, so as to receive the exposure value signal on the unit and set the exposure value corresponding to the exposure value signal.

    摘要翻译： 由选择性地安装在相机主体上的附件的电信号中断的选择器电路，并连接在光接收电路中以及设置在相机中的曝光确定电路。 当将上述单元安装在相机上时，通过选择器电路将设置在相机中的曝光确定电路从光接收电路自动连接到单元的输出端，以便接收曝光值信号 并设置与曝光值信号对应的曝光值。

    Automatic exposure control system for single reflex camera
    5.
    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

    申请人： Masanori Uchidoi ,  Tokuichi Tsunekawa ,  Hiroshi Aizawa ,  Tetsuya Taguchi ,  Tadashi Ito ,  Yoshiyuki Takishima

    发明人： Masanori Uchidoi ,  Tokuichi Tsunekawa ,  Hiroshi Aizawa ,  Tetsuya Taguchi ,  Tadashi Ito ,  Yoshiyuki Takishima

    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。

    Temperature compensating device for devices having semiconductors
    6.
    发明授权
    Temperature compensating device for devices having semiconductors 失效
    具有半导体器件的温度补偿装置

    公开(公告)号：US4015149A

    公开(公告)日：1977-03-29

    申请号：US583445

    申请日：1975-06-03

    申请人： Tokuichi Tsunekawa ,  Masanori Uchidoi ,  Tetsuya Taguchi ,  Yoshiyuki Takishima ,  Tadashi Ito ,  Hiroshi Aizawa

    发明人： Tokuichi Tsunekawa ,  Masanori Uchidoi ,  Tetsuya Taguchi ,  Yoshiyuki Takishima ,  Tadashi Ito ,  Hiroshi Aizawa

    IPC分类号： G03B7/081 ,  G01J1/44 ,  G06G7/24 ,  H03F1/30 ,  H03F3/08 ,  H01V3/00 ,  H03F1/32

    CPC分类号： G01J1/44 ,  G03B7/00 ,  G06G7/24 ,  H03F1/30 ,  H03F3/087

    摘要： A temperature compensating device for devices comprising semiconductors. The temperature compensating device comprises a temperature compensating circuit, such as a circuit including a diode, and a current control circuit which adjusts the quantity of the electric current flowing through the temperature compensating circuit. The temperature characteristic of the temperature compensating circuit is mutually compensatory with that of the output of the device comprising semiconductors. When the temperature characteristic of the output of said temperature compensating circuit differs from that of the output of such semiconductor device, the current control circuit causes a current which corresponds to the difference between the temperature coefficient of the compensating circuit and that of the semiconductor device to flow through the temperature compensating circuit, so that satisfactory temperature compensation can be accomplished.

    摘要翻译： 一种包含半导体器件的温度补偿装置。 温度补偿装置包括诸如包括二极管的电路的温度补偿电路和调节流过温度补偿电路的电流量的电流控制电路。 温度补偿电路的温度特性与包括半导体的器件的输出相互补偿。 当所述温度补偿电路的输出的温度特性与这种半导体器件的输出的温度特性不同时，电流控制电路使得对应于补偿电路的温度系数与半导体器件的温度系数之间的差的电流 流过温度补偿电路，从而可以实现令人满意的温度补偿。

    Flash lighting unit for a camera
    7.
    发明授权
    Flash lighting unit for a camera 失效
    相机闪光照明装置

    公开(公告)号：US4464609A

    公开(公告)日：1984-08-07

    申请号：US551491

    申请日：1983-11-14

    申请人： Zenzo Nakamura ,  Takashi Uchiyama ,  Shohei Ohtaki ,  Tokuichi Tsunekawa ,  Masanori Uchidoi ,  Yukio Mashimo

    发明人： Zenzo Nakamura ,  Takashi Uchiyama ,  Shohei Ohtaki ,  Tokuichi Tsunekawa ,  Masanori Uchidoi ,  Yukio Mashimo

    IPC分类号： G03B15/05 ,  H05B41/32 ,  H05B41/14

    CPC分类号： H05B41/325

    摘要： 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.

    摘要翻译： 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。