LIQUID LENS SYSTEMS
    11.
    发明申请
    LIQUID LENS SYSTEMS 审中-公开

    公开(公告)号:US20200319380A1

    公开(公告)日:2020-10-08

    申请号:US16763439

    申请日:2018-11-15

    Abstract: A liquid lens can be coupled to ground, such as to impede charge from building up in the liquid lens during operation thereof. For example, an electrode that is in electrical communication with a conductive fluid of the liquid lens can be coupled to ground. A switch can be used to selectively couple the liquid lens to ground, such as for discharging the liquid lens. An electrode can be selectively coupled to ground and to driving signals using a switch. In some cases, drive signals can be provided to electrodes other than the grounded electrode for driving the liquid lens. In some cases, the liquid lens can be driven using feedback control based on one or more measured parameters indicative capacitance between a fluid and one or more electrodes in the liquid lens.

    LIQUID LENS CONTROL SYSTEMS AND METHODS
    12.
    发明申请

    公开(公告)号:US20200096679A1

    公开(公告)日:2020-03-26

    申请号:US16500631

    申请日:2018-04-05

    Abstract: Control systems for liquid lenses can use feedback control using one or more measured parameters indicative of a position of the fluid interface in the liquid lens. Capacitance between a fluid and an electrode in the liquid lens can vary depending on the position of the fluid interface. Current mirrors can be used for making measurements indicative of the capacitance and/or the fluid interface position. The liquid lens can be calibrated using the measurements indicative of capacitance and/or fluid interface position as the voltage is driven across an operational range. A control system can use pulse width modulation (PWM) for driving a liquid lens, and a carrier frequency for the PWM signals can be varied to control power consumption in the liquid lens. The slew rate can be adjustable to control power consumption in the liquid lens.

    SILICA-CONTAINING SUBSTRATES WITH VIAS HAVING AN AXIALLY VARIABLE SIDEWALL TAPER AND METHODS FOR FORMING THE SAME

    公开(公告)号:US20180342451A1

    公开(公告)日:2018-11-29

    申请号:US15978430

    申请日:2018-05-14

    Abstract: Silica-containing substrates including vias with a narrow waist, electronic devices incorporating a silica-containing substrate, and methods of forming vias with narrow waist in silica-containing substrates are disclosed. In one embodiment, an article includes a silica-containing substrate including greater than or equal to 85 mol % silica, a first surface, a second surface opposite the first surface, and a via extending through the silica-containing substrate from the first surface toward the second surface. The via includes a first diameter at the first surface wherein the first diameter is less than or equal to 100 μm, a second diameter at the second surface wherein the first diameter is less than or equal to 100 μm, and a via waist between the first surface and the second surface. The via waist has a waist diameter that is less than the first diameter and the second diameter such that a ratio between the waist diameter and each of the first diameter and the second diameter is less than or equal to 75%.

    Liquid lens control systems and methods

    公开(公告)号:US11474284B2

    公开(公告)日:2022-10-18

    申请号:US16500631

    申请日:2018-04-05

    Abstract: Control systems for liquid lenses can use feedback control using one or more measured parameters indicative of a position of the fluid interface in the liquid lens. Capacitance between a fluid and an electrode in the liquid lens can vary depending on the position of the fluid interface. Current mirrors can be used for making measurements indicative of the capacitance and/or the fluid interface position. The liquid lens can be calibrated using the measurements indicative of capacitance and/or fluid interface position as the voltage is driven across an operational range. A control system can use pulse width modulation (PWM) for driving a liquid lens, and a carrier frequency for the PWM signals can be varied to control power consumption in the liquid lens. The slew rate can be adjustable to control power consumption in the liquid lens.

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