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公开(公告)号：US20220317343A1
公开(公告)日：2022-10-06
申请号：US17615930
申请日：2020-06-01
Applicant: CORNING INCORPORATED , LG INNOTEK CO., LTD
Abstract: A variable focus lens system can include a variable focus lens, one or more electrodes, a signal generator configured to supply voltage to the one or more electrodes to vary the focal length of the variable focus lens, and a controller configured to apply a voltage to the one or more electrodes and receive information indicative of a capacitance that results from the applied voltage. The controller can be configured to determine a temperature of the variable focus lens based at least in part on the capacitance or applied voltage. The variable focus lens system can include a temperature sensor, and the controller can be configured to receive temperature information from the temperature sensor and calibrate the temperature sensor based at least in part on the received temperature information, the applied voltage, and the received capacitance information.
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公开(公告)号：US11346984B2
公开(公告)日：2022-05-31
申请号：US16484353
申请日：2018-02-07
Applicant: CORNING INCORPORATED
Inventor： Raymond Miller Karam , Ming Ying
Abstract: A liquid lens can include a chamber and a first fluid and a second fluid contained in the chamber. The first fluid and the second fluid may be immiscible, forming a fluid interface between the two fluids. The liquid lens may also include a first electrode insulated from the two fluids. The liquid lens may include a second electrode in electrical communication with the first fluid. The liquid lens may be configured such that a position of the fluid interface is based at least in part on voltages applied to the electrodes. The lens may further include a window configured to transmit light therethrough along an optical axis. Further, a flexible member may be configured to cause the window to displace axially along the optical axis to change the volume of the chamber.
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公开(公告)号：US20200096678A1
公开(公告)日：2020-03-26
申请号：US16500627
申请日：2018-04-05
Applicant: CORNING INCORPORATED
Inventor： Jann Paul Kaminski , Raymond Miller Karam , Dragan Pikula , Daniel Ohen Ricketts
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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公开(公告)号：US20200026064A1
公开(公告)日：2020-01-23
申请号：US16585837
申请日：2019-09-27
Applicant: CORNING INCORPORATED
Inventor： Amy Renee Andersen , Raymond Miller Karam
Abstract: Embodiments generally relate to systems and methods for separating an emulsion in a cavity of a device such as a liquid lens device. In one embodiment, the method comprises at least one of: applying a bias voltage to electrodes in the device, causing at least one of droplet migration, flattening of large droplets, and reduced droplet surface tension; applying an oscillating actuation voltage waveform comprising an actuation frequency to the electrodes, such that fluid pumping and turbulence is created within the device cavity; and applying an oscillating excitation voltage waveform comprising an excitation frequency to the electrodes, such that the varying electric field created by the oscillating voltage causes small droplets of the first liquid to coalesce.
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公开(公告)号：US12196981B2
公开(公告)日：2025-01-14
申请号：US17440050
申请日：2020-03-12
Applicant: CORNING INCORPORATED
Inventor： John D Duke , Kee Siang Goh , Raymond Miller Karam , Joseph Marshall Kunick , Paul Michael Then , Thomas Mikio Wynne
Abstract: A liquid lens can include a cavity, a first liquid disposed within the cavity, and a second liquid disposed within the cavity. A focus of the liquid lens can be adjustable by adjusting a shape of a variable interface defined by the first liquid and the second liquid. Upon adjusting the focus of the liquid lens in a periodic oscillation with a peak-to-valley amplitude of 20 diopter and a frequency of 2 Hz, a root mean square (RMS) wavefront error (WFE) of the liquid lens measured at 1 ms intervals can remain at 100 nm or less throughout one complete cycle of the periodic oscillation.
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Patent Agency Ranking
公开(公告)号：US11933992B2
公开(公告)日：2024-03-19
申请号：US17056978
申请日：2019-05-21
Applicant: CORNING INCORPORATED
Inventor： Raymond Miller Karam , Thomas Mikio Wynne
CPC classification number: G02B27/646 , G02B3/14 , G02B2207/115
Abstract: A liquid lens can tilt a fluid interface, such as for optical image stabilization or off-axis focus. Tilting the interface can cause coma aberration or other dynamic wavefront error. The liquid lens can be driven to reduce the coma aberration or other dynamic wavefront error. For example, input shaped signals can be used. In some cases, the signals can be overdriven and/or underdriven, which can increase response time, and/or encourage settling of the interface.
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公开(公告)号：US11474284B2
公开(公告)日：2022-10-18
申请号：US16500631
申请日：2018-04-05
Applicant: CORNING INCORPORATED
Inventor： Jann Paul Kaminski , Raymond Miller Karam , Dragan Pikula , Daniel Ohen Ricketts
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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公开(公告)号：US20220206193A1
公开(公告)日：2022-06-30
申请号：US17610024
申请日：2020-05-07
Applicant: CORNING INCORPORATED
Inventor： Robert Alan Bellman , Raymond Miller Karam , Marie Bernadette O'Regan , Shiva Prakash
Abstract: A liquid lens article that includes: a first substrate; and an electrode disposed on a primary surface of the first substrate. The electrode comprises an electrically conductive structure disposed on the primary surface of the first substrate and an optical absorber structure disposed on the electrically conductive structure. The electrode comprises a reflectivity minimum of about 3% or less at a visible wavelength within a range of 390 mm to 700 nm, and a reflectivity of about 25% or less at an ultraviolet wavelength within a range of 100 nm to 400 nm. Further, the absorber structure comprises an absorber layer comprising a metal oxynitride and the electrically conductive structure comprises a metal layer comprising a metal that differs from the metal of the absorber layer of the absorber structure. In addition, the electrode can comprise a sheet resistance from about 5 Ω/sq to about 0.5 Ω/sq.
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公开(公告)号：US20220187508A1
公开(公告)日：2022-06-16
申请号：US17440050
申请日：2020-03-12
Applicant: CORNING INCORPORATED
Inventor： John D Duke , Kee Siang Goh , Raymond Miller Karam , Joseph Marshall Kunick , Paul Michael Then , Thomas Mikio Wynne
Abstract: A liquid lens can include a cavity, a first liquid disposed within the cavity, and a second liquid disposed within the cavity. A focus of the liquid lens can be adjustable by adjusting a shape of a variable interface defined by the first liquid and the second liquid. Upon adjusting the focus of the liquid lens in a periodic oscillation with a peak-to-valley amplitude of 20 diopter and a frequency of 2 Hz, a root mean square (RMS) wavefront error (WFE) of the liquid lens measured at 1 ms intervals can remain at 100 nm or less throughout one complete cycle of the periodic oscillation.
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公开(公告)号：US11347050B2
公开(公告)日：2022-05-31
申请号：US16585837
申请日：2019-09-27
Applicant: CORNING INCORPORATED
Inventor： Amy Renee Andersen , Raymond Miller Karam
Abstract: Embodiments generally relate to systems and methods for separating an emulsion in a cavity of a device such as a liquid lens device. In one embodiment, the method comprises at least one of: applying a bias voltage to electrodes in the device, causing at least one of droplet migration, flattening of large droplets, and reduced droplet surface tension; applying an oscillating actuation voltage waveform comprising an actuation frequency to the electrodes, such that fluid pumping and turbulence is created within the device cavity; and applying an oscillating excitation voltage waveform comprising an excitation frequency to the electrodes, such that the varying electric field created by the oscillating voltage causes small droplets of the first liquid to coalesce.
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