LENS CLEANING VIA ELECTROWETTING
    44.
    发明申请

    公开(公告)号:US20180326462A1

    公开(公告)日:2018-11-15

    申请号:US15591311

    申请日:2017-05-10

    CPC classification number: B08B3/102 G01D5/24 G01H13/00

    Abstract: An apparatus includes a mass detection circuit coupled to a surface covered with a plurality of electrodes. The mass detection circuit is configured to detect a mass of a first droplet present on the surface. The apparatus further includes a transducer circuit coupled to a transducer, which is coupled to the surface and form a lens unit. The transducer circuit configured to excite a first vibration of the surface at a resonant frequency to form a high displacement region on the surface. The apparatus also includes a voltage excitation circuit coupled to the plurality of electrodes. In response to the detection of the mass of the first droplet, the voltage excitation circuit is configured to apply a sequence of differential voltages on one or more consecutive electrodes which moves the first droplet to the high displacement region.

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