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100 条记录 (耗时 0.013 秒)

    FLASHLAMP DRIVE CIRCUIT
    44.
    发明公开
    FLASHLAMP DRIVE CIRCUIT 审中-公开
    FLASH灯控制电路

    公开(公告)号：EP1754396A1

    公开(公告)日：2007-02-21

    申请号：EP05744285.7

    申请日：2005-05-20

    申请人： Cyden Ltd.

    发明人： KIERNAN, Michael Noel, Technium ,  SIMONSEN, Jan

    IPC分类号： H05B41/32

    CPC分类号： H05B41/32

    摘要： A flashlamp drive circuit including a storage capacitor which is charged and selectively discharged in order to drive a flashlamp. A capacitor (116) is connected in parallel with each respective flashlamp (106) in a bank of flashlamps. Each capacitor (116) has a comparatively small capacitance so as to be capable of storing only a portion of the total energy pulse required to be delivered to the respective flashlamp (106). A controller, comprising a digital signal processor (118) and a microprocessor (120) is provided to control the operation of all of the flashlamps (106) in the bank via respective switch mechanisms (110). In use, each energy (or drive) pulse delivered to a flashlamp (106) is comprised of a plurality of smaller energy packets resulting from repeated charging and discharging of the respective capacitor (116). Thus, the shape and duration of the current pulses delivered to the flashlamp (106) is highly controllable and the size of the storage capacitor (116) required is significantly reduced relative to the prior art.

    Flash device
    45.
    发明公开
    Flash device 审中-公开
    Blitzanordnung

    公开(公告)号：EP1727400A1

    公开(公告)日：2006-11-29

    申请号：EP06019027.9

    申请日：2002-04-30

    申请人： Fuji Photo Film Co., Ltd.

    发明人： Katsura, Hirofumi ,  Imamaura, Takashi

    IPC分类号： H05B41/32

    CPC分类号： H05B41/325 ,  H05B41/32 ,  H05K1/141

    摘要： A lens-fitted photo film unit is pre-loaded with photo film (23), and is a flash built-in type. A booster circuit (46, 47) boosts power source voltage to obtain high voltage. A main capacitor (40) stores charge at the high voltage. A flash discharge tube (41) is connected with the main capacitor, and emits flash light by discharge at the high voltage. A trigger circuit (51, 53) triggers the discharge of the flash discharge tube in response to an exposing operation. A main circuit board (17a) has the booster circuit and the trigger circuit mounted thereon. A subsidiary circuit board (17b) is connected with the main circuit board, and has a flash quenching circuit (49) mounted thereon. The flash quenching circuit operates in an auxiliary manner, and automatically adjusts the amount of the flash light.

    摘要翻译： 装有镜头的摄影胶片单元预装有胶卷（23），是内置闪光灯。 升压电路（46,47）提高电源电压以获得高电压。 主电容器（40）在高电压下存储电荷。 闪光放电管（41）与主电容器连接，并通过高压放电发射闪光灯。 触发电路（51,53）响应于曝光操作触发闪光放电管的放电。 主电路板（17a）具有安装在其上的升压电路和触发电路。 辅助电路板（17b）与主电路板连接，并具有安装在其上的闪光淬火电路（49）。 闪光淬火电路以辅助方式工作，并自动调节闪光灯的量。

    FLASH DEVICE, CAMERA DEVICE AND METHOD AND PROGRAM THEREOF FOR THE ELIMINATION OF WASTEFUL POWER CONSUMPTION THEREIN
    46.
    发明公开
    FLASH DEVICE, CAMERA DEVICE AND METHOD AND PROGRAM THEREOF FOR THE ELIMINATION OF WASTEFUL POWER CONSUMPTION THEREIN 审中-公开
    闪存器件，处置豪华性能AUFNAHMES THEREIN CAMERA和方法以及程序

    公开(公告)号：EP1576861A1

    公开(公告)日：2005-09-21

    申请号：EP03780758.3

    申请日：2003-12-15

    申请人： CASIO COMPUTER CO., LTD.

    发明人： YUYAMA, Masami

    IPC分类号： H05B41/30 ,  H05B41/32

    CPC分类号： H04N5/23241 ,  H04N5/2256 ,  H05B41/32

    摘要： In a REC mode of an ordinary image pickup standby state, a main capacitor (71) is connected to a side of a step-up/charging circuit (72) via a switch (82), and the main capacitor (71) is charged with electric power of a charging battery (91). When the REC mode is changed to other modes, the main capacitor (71) is connected to a side of a step-down circuit (81) by a switching operation of the switch (82). The step-down circuit (81) steps down charging voltage of the main capacitor (71) to 4.2 V to supply it to a power supply circuit (93) of a camera, and steps down the charging voltage to 5 V to supply it to the charging battery (91) which is a power supply of the camera. When it is no longer necessary to emit fill light, the electric power lost from the main capacitor (71) due to natural discharge can automatically be utilized efficiently for operations other than the emission of the fill light.

    Electronic flash device for photographic camera
    47.
    发明公开
    Electronic flash device for photographic camera 有权
    ElektronischesBlitzgerätfürFoto-Kamera

    公开(公告)号：EP1039786A1

    公开(公告)日：2000-09-27

    申请号：EP00302414.8

    申请日：2000-03-24

    申请人： FUJI PHOTO FILM CO., LTD.

    发明人： Kagaya, Masato ,  Yokoo, Hirokazu ,  Hata, Koji

    IPC分类号： H05B41/26 ,  G03B15/05

    CPC分类号： H05B41/32

    摘要： An electronic flash device equipped with an LED indicator (26) for providing an indication of completion of charging a main capacitor (29) and a circuit for lowering power consumption has a controlling transistor (36) operative to control a base current of the oscillating transistor (35) which increases or decreases a primary current flowing through a primary winding (41) and to be turned conductive by a current from a battery (27) through a current limiting resistor (39) to start supply of the base current of the oscillating transistor. A secondary current generated in a secondary winding (42) increases the base current of the controlling transistor, which increases the base current of the oscillating transistor which is lowered by the current limiting resistor having a large resistance and is increased or decreased by the controlling transistor. The electronic flash device lowers the power consumption as compared to the devices which use a tertiary winding to increase or decrease the base current of the oscillating transistor. A tertiary winding (43) of the electronic flash device is solely used for turning on the LED.

    摘要翻译： 配备有用于提供对主电容器（29）的充电完成的指示的LED指示器（26）和用于降低功耗的电路的电子闪光装置具有控制晶体管（36），用于控制振荡晶体管的基极电流 （35），其增加或减少流过初级绕组（41）的初级电流并且通过电流通过限流电阻（39）由电池（27）导通，以开始提供振荡的基极电流 晶体管。 在次级绕组（42）中产生的次级电流增加了控制晶体管的基极电流，这增加了由具有大电阻的限流电阻降低的振荡晶体管的基极电流，并且由控制晶体管增加或减小 。 与使用三次绕组的器件相比，电子闪光器件降低了功率消耗，从而增加或减少了振荡晶体管的基极电流。 电子闪光装置的三次绕组（43）仅用于打开LED。

    SINGLE TOUCH FLASH CHARGER CONTROL
    49.
    发明公开
    SINGLE TOUCH FLASH CHARGER CONTROL 失效
    控制与单点触摸闪光灯充电

    公开(公告)号：EP0716801A1

    公开(公告)日：1996-06-19

    申请号：EP95929311.0

    申请日：1995-06-23

    申请人： EASTMAN KODAK COMPANY

    发明人： DUNSMORE, Clay, Allen, c/o Eastman Kodak Company

    IPC分类号： G03C3 ,  G03B15 ,  G03B17 ,  H05B41

    CPC分类号： H05B41/32

    摘要： An electronic flash device including a self-oscillating charging circuit, a momentary trigger for initiating oscillations of the circuit to charge a flash capacitor, and a voltage sensing device coupled directly between the circuit and the flash capacitor for arresting the oscillations when the capacitor is fully charged. The voltage sensor inlcudes a zener diode in series with a neon ready-light, and switches on a transistor to ground the charging circuit and arrest the oscillations when the capacitor is fully charged. Actuation of the flash device automatically restarts the oscillations and recharges the flash capacitor. A process for recycling a single use camera having such an electronic flash device also is disclosed.