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    FILTRE OPTIQUE ADAPTATIF
    2.
    发明公开
    FILTRE OPTIQUE ADAPTATIF 有权
    自适应滤波器

    公开(公告)号：EP2715437A1

    公开(公告)日：2014-04-09

    申请号：EP12723701.4

    申请日：2012-05-25

    申请人： Casbi, Evelyne ,  Borreau, Jean-Paul

    发明人： Casbi, Evelyne ,  Borreau, Jean-Paul

    IPC分类号： G02C7/10 ,  G02F1/133 ,  A61F9/06 ,  A61F9/02

    CPC分类号： G02C7/10 ,  A42B3/226 ,  A61F9/023 ,  G02C7/101 ,  G02F1/13318 ,  G02F1/1335

    摘要： The invention relates to an optical filter comprising: at least one optically transparent liquid-crystal shutter, the shutter having a polarization voltage ULCD that marks a threshold between two polarization states, and being designed to switch between at least two opacities OP1 and OP2, OP2 being strictly higher than OP1, when it receives a voltage that is above or below, respectively, the polarization voltage ULCD; and an electronic system comprising: an electronic module for controlling the liquid-crystal shutter, designed to control the voltage applied to the liquid crystal shutter; a photosensitive sensor, designed to deliver, to the electronic control module, a continuous voltage Ucs that varies depending on the luminous intensity that it receives, the photosensitive sensor being the only power supply of the electronic control module and the liquid-crystal shutter, the optical filter being characterized in that, if the photosensitive sensor receives a luminous intensity below a dazzle threshold le, the liquid-crystal shutter has an opacity OP1, and in that the electronic control module is designed, when the photosensitive sensor receives a luminous intensity above the dazzle threshold le, to deliver, to the liquid-crystal shutter, a continuous voltage Ue that is strictly above the polarization voltage ULCD of the shutter, so that the latter switches from opacity OP1 to opacity OP2.

    摘要翻译： 本发明涉及一种光学滤波器，包括：至少一个光学透明液晶快门，所述快门具有标记两个偏振态之间的阈值的极化电压ULCD，并被设计为在至少两个不透明度OP1和OP2，OP2之间切换 严格高于OP1，当其分别接收到极化电压ULCD高于或低于的电压时; 以及电子系统，包括：电子模块，用于控制液晶快门，设计成控制施加到液晶快门的电压; 光敏传感器，被设计成向电子控制模块传送连续的电压Ucs，该连续电压Ucs根据其接收的发光强度而变化，光敏传感器是电子控制模块和液晶快门的唯一电源， 光学滤光器的特征在于，如果光敏传感器接收到低于眩目阈值le的发光强度，则液晶快门具有不透明度OP1，并且设计电子控制模块时，当光敏传感器接收到上述发光强度时 眩目阈值le向液晶快门传送严格高于快门的极化电压ULCD的连续电压Ue，使得后者从不透明度OP1转换为不透明度OP2。