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    • 7. 发明公开
    • A FLASH GENERATOR FOR A FLASH TUBE
    • 闪光灯管的闪光发生器
    • EP3219175A1
    • 2017-09-20
    • EP15858723.8
    • 2015-10-26
    • Profoto AB
    • FALK, AntonSUNDKVIST, Michael
    • H05B41/38G03B7/17G03B15/03
    • The present disclosure relates to a flash generator for providing power supply to a flash tube so that the flash tube rapidly provides a light output adapted to FP-sync, Flat Peak. The flash generator comprises a capacitor bank, an output and a switch configured to switch a current flow from the capacitor bank via the output to provide a variable power via the output. The flash generator further comprises a controller for controlling the switch, whereby by controlling the on time of the switch, the generator is operative to provide, during a time period of 100 to 2000 μs during a peak time period within the time period, an average power at least 4 times higher than the average power provided during the other time period within the time period, whereby the flash tube during the peak time period becomes fully ignited.
    • 本发明涉及一种用于为闪光管提供电力供应的闪光发生器,从而闪光管迅速提供适合FP同步,平坦峰值的光输出。 闪光发生器包括电容器组,输出和开关,其被配置为通过输出来切换来自电容器组的电流,以经由输出提供可变功率。 闪光发生器还包括用于控制开关的控制器,由此通过控制开关的接通时间,发生器可操作以在时间段内的峰值时间段期间的100至2000μs的时间段内提供平均值 功率至少比在该时间段内在另一时间段期间提供的平均功率高4倍,由此在高峰时间段期间闪光管完全被点燃。
    • 10. 发明公开
    • ALTERNATING CURRENT-DRIVEN LIGHT EMITTING ELEMENT LIGHTING APPARATUS
    • 麻省理工学院BETRIEBENE BELEUCHTUNGSVORRICHTUNG MIT LICHTEMITTIERENDEM ELEMENT
    • EP3157307A1
    • 2017-04-19
    • EP15806981.5
    • 2015-06-04
    • Seoul Semiconductor Co., Ltd.
    • LEE, Hyung JinKANG, Hyun GuHAN, Sang Wook
    • H05B37/02H05B41/38
    • H05B33/0851H05B33/0809H05B33/0824H05B33/083H05B33/0845H05B39/044
    • Disclosed is a dimmable alternating current-driven light emitting element lighting apparatus. The disclosed alternating current-driven light emitting element lighting apparatus of the present invention comprises: a triac dimmer for generating a modulated alternating current voltage by modulating a phase of alternating current power according to a selected level of dimming; a rectifying unit for generating drive voltage by full-wave-rectifying the alternating current voltage having the phase modulated by the triac dimmer; a dimming level detection unit for detecting a dimming level according to the drive voltage; a phase cut reference setting unit for setting a phase cut reference value to be compared with the detected dimming level; and a light emitting element driving module for constant-current-controlling a plurality of light emitting element groups by comparing the detected dimming level with the phase cut reference value, wherein the light emitting element driving module comprises a light emitting element current blocking unit for blocking a drive current supplied to the plurality of lighting emitting element groups when the dimming level is lower than the phase cut reference value. Thus, the present invention can prevent flickering by blocking a drive current of the entirety of the plurality of light emitting element groups at a dimming level lower than a preconfigured phase cut reference value, and can improve the compatibility of a dimmer by improving dimming characteristics changing according to characteristics of the triac dimmer.
    • 公开了一种可调光交流驱动发光元件照明装置。 所公开的本发明的交流驱动发光元件照明装置包括:三端双向可控硅调光器,用于通过根据所选择的调光级调制交流电源的相位来产生调制的交流电压; 整流单元,用于通过全波整流具有由三端双向可控硅调光器调制的相位的交流电压来产生驱动电压; 调光电平检测单元,用于根据驱动电压检测调光电平; 相位参考设定单元,用于设定与所检测的调光水平进行比较的相位参考值; 以及发光元件驱动模块,用于通过将检测到的调光水平与相位参考值进行比较来恒定地控制多个发光元件组,其中发光元件驱动模块包括用于阻挡的发光元件电流阻挡单元 当所述调光水平低于所述相位参考值时提供给所述多个发光元件组的驱动电流。 因此,本发明可以通过将多个发光元件组的整体的驱动电流阻挡在低于预配置的相位参考值的调光水平来防止闪烁,并且可以通过改善调光特性改变来提高调光器的兼容性 根据三端双向可控硅调光器的特点。