Fluid Patents (Class 359/665)
  • Patent number: 11226532
    Abstract: A liquid lens includes a first plate including a cavity in which a conductive liquid and a non-conductive liquid are disposed; a first electrode placed under the first plate; a second electrode placed on the first plate; a second plate on the second electrode; and a third plate under the first electrode, wherein a region of the second plate, which is disposed on the conductive liquid, includes a first region having a first thickness and including an optical axis, and a second region extending from the first region and having a second thickness, and the first thickness is greater than the second thickness.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: January 18, 2022
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Seung Ryong Park
  • Patent number: 11221435
    Abstract: Wide-angle beam steering using two or more variable lenses to form a small-angle beam steering element, along with a numerical aperture converter and a wide-angle lens. The small-angle beam steering element might comprise either one- or two-dimensional beam steering with tunable liquid lenses.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: January 11, 2022
    Assignee: The Regents of the University of Colorado a body corporate
    Inventors: Juliet T. Gopinath, Victor M. Bright, Mo Zohrabi, Robert H. Cormack
  • Patent number: 11194076
    Abstract: One embodiment of a lens module includes a first lens including a fluid so as to absorb incident light; and a second lens forming an interface with a part of the first lens, the second lens including a fluid so as to permit passage of the incident light therethrough, wherein the second lens defines a first optic path in a center part thereof to permit passage of the incident light therethrough, and the first light path is changed in a cross-sectional area as the interface varies, and wherein a second optical path is formed at a portion of the first lens that is located adjacent to the first optical path.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: December 7, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Eun Sung Seo, Sang Hun Lee
  • Patent number: 11181670
    Abstract: The present invention relates to a lens curvature variation apparatus using sensed temperature information. The lens curvature variation apparatus according to an embodiment is a lens curvature variation apparatus for varying a curvature of a liquid lens which is variable based on an applied electrical signal and includes a lens driver to apply an electrical signal to the liquid lens, a sensor unit to sense the curvature of the liquid lens formed based on the electrical signal, a temperature sensing unit to sense a temperature of a periphery of the liquid lens, and a controller to control the lens driver to form a target curvature of the liquid lens based on the sensed curvature, wherein the controller controls the lens driver to output a changed electrical signal to the liquid lens to form the target curvature, based on the sensed temperature. Thereby, the curvature of the lens can be sensed quickly and accurately using the sensed temperature information.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: November 23, 2021
    Assignees: LG INNOTEK CO., LTD., CORNING INCORPORATED
    Inventors: Seungheun Song, Jaehoon Jeong, Yelim Youn, Jongyeon Lee
  • Patent number: 11149150
    Abstract: A composition for forming a protective coating on an electronic device that is in the form of a non-Newtonian fluid that exhibits both viscous and elastic properties, and that forms at least one coating that is hydrophobic, oleophobic, or oleophilic is disclosed. The viscous and elastic properties associated with the non-Newtonian fluid allows the composition to redistribute after being applied as a coating an electronic device. Methods for protecting an electronic device from liquid contaminants by applying the disclosed composition and electronic devices comprising the composition are also disclosed. An electronic device, such as a printed circuit board, having a film made of the composition is also disclosed.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: October 19, 2021
    Assignee: Actnano, Inc.
    Inventors: Syed Taymur Ahmad, Justin Kleingartner, Sruti Balasubramanian
  • Patent number: 11115574
    Abstract: Disclosed is a liquid lens control circuit, which includes a liquid lens including a plurality of individual electrodes disposed in compartmental areas at the same level and a common electrode disposed at a different level from that of the individual electrodes, a voltage control circuit configured to supply voltages to the common electrode and at least one of the individual electrodes in the liquid lens in order to control an interface in the liquid lens, and a capacitance measuring circuit configured to calculate a capacitance between the common electrode and at least one of the individual electrodes in the liquid lens using a switched capacitor.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: September 7, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Young Seop Moon, Young Woon Kim
  • Patent number: 11054632
    Abstract: A structured film comprises an optically transmissive surface including a plurality of walls, each wall being adjustable between a plurality of configurations including a default configuration. When attached to a display, the walls extend away from the display at different heights and surround a plurality of light emitters of the display. In a default configuration, the walls generate selected diffraction orders for each light emitter such that gaps between adjacent light emitters are at least partially covered. The film can be adjusted by varying a geometry of the walls in response to an electrical input. The brightness of a region of interest in an image to be formed on the display can be adjusted relative to a surrounding region by varying wall geometry, using contrast control, or a combination thereof. The optically transmissive surface comprises a solid membrane filled with a non-solid material having a specific index of refraction.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: July 6, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Youngshik Yoon, Cheonhong Kim
  • Patent number: 11035987
    Abstract: A liquid lens module includes a first housing having a first hole formed therein to allow a first lens unit to be coupled thereto, a lower connection substrate coupled to the first housing, an upper connection substrate disposed on the lower connection substrate, the upper connection substrate being coupled to the first housing, and a liquid lens disposed between the lower connection substrate and the upper connection substrate, the liquid lens being configured to be electrically connected to the lower connection substrate and to the upper connection substrate. The upper connection substrate includes an opening that is larger than the liquid lens. The opening is disposed at a position corresponding to the first hole in an optical-axis direction.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: June 15, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Tae Min Ha
  • Patent number: 11029511
    Abstract: There is presented an optical element (100, 500, 600, 700) comprising a support structure (101, 501) with a sidewall (112, 512), a bendable cover member (102, 502, 702) attached to the sidewall (112, 512), one or more piezoelectric actuators (103, 104, 105) arranged for shaping said bendable cover member (102, 502, 702) into a desired shape, wherein said optical element (100, 500, 600, 700) comprises an optically active area (111, 511) with an optical axis (110, 510), wherein an outer edge (215A-E) of the one or more piezoelectric actuators (103, 104, 105) as observed in a direction being parallel with the optical axis (110, 510) defines a first line, and an inner edge (109) of the support structure (101, 501) at the interface between the support structure (101, 501) and the bendable cover member (102, 502, 702) as observed in the direction being parallel with the optical axis (110, 510) defines a second line, wherein the first line and the second line as observed in the direction being parallel with the opti
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: June 8, 2021
    Assignee: Polight ASA
    Inventors: Vladimir Kartashov, Pierre Craen
  • Patent number: 10987214
    Abstract: An accommodating intraocular lens (AIOL) for implantation within a capsular bag of a patient's eye comprises first and second components coupled together to define an inner fluid chamber and an outer fluid chamber. The inner region of the AIOL provides optical power with one or more of the shaped fluid within the inner fluid chamber or the shape of the first or second components. A surface treatment or coating may be applied to one or more surfaces of the first and second components. The surface treatment is expected to decrease the roughness of the machined surfaces of the boundary surfaces of the first and second components, and thereby reduce the mass of water coalescing at such boundary surfaces. The disclosed surface treatments are also expected to increase the hydrophobicity (i.e., decrease the surface energy) of the corresponding surface(s), thereby decreasing the “wettability” of these surfaces.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: April 27, 2021
    Assignee: Shifamed Holdings, LLC
    Inventors: Claudio Argento, Syed Hasan Askari, Arindam Datta, Jacob Raquet, Tom Saul
  • Patent number: 10983364
    Abstract: A spectacle lens, which is manufactured by additive manufacturing, includes interspersing first volume elements and second volume elements. The first and second volume elements are arranged on the grid points of a geometric grid to form a first sub-grid and a second sub-grid, respectively. The first sub-grid forms the first part of the spectacle lens having a dioptric effect for vision for a first object distance and the second sub-grid forms the second part of the spectacle lens having a dioptric effect for vision for a second object distance, which differs from the first object distance.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: April 20, 2021
    Assignee: Carl Zeiss Vision International GmbH
    Inventors: Timo Mappes, Matthias Hornauer, Georg Michels, Thomas Glöge
  • Patent number: 10962771
    Abstract: A lens system (100,200,300,400,500) that employs one or more liquids (130,230,340,350) to participate in correcting chromatic aberration. The liquids (130,230,340,350) are natural or having manually adjusted physical properties. The liquids (130,230,340,350) are filled in a chamber (430,540,550) formed by a frame and a lid (150,250,370,450,570) on a top surface of the frame, and a base (140,240,360,440,560) on a bottom surface of the frame.
    Type: Grant
    Filed: October 9, 2016
    Date of Patent: March 30, 2021
    Inventor: Man Kit Louis Wai
  • Patent number: 10935701
    Abstract: An optical system is provided, including a liquid optical module and a first optical module. The liquid optical module includes a liquid lens driving mechanism and a liquid lens assembly. The liquid lens driving mechanism includes a fixed portion, a movable portion and a first driving assembly configured to drive the movable portion to move relative to the fixed portion. The liquid lens assembly includes a liquid lens element, a fixing member and a deforming member. The first optical module is disposed in a receiving space of the fixed portion and includes: a first optical element and a first optical driving mechanism. When the movable portion is driven by the driving assembly to move relative to the fixed portion, the liquid lens element is deformed via the deforming member, causing the optical properties of the liquid lens element to change.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: March 2, 2021
    Assignee: TDK TAIWAN CORP.
    Inventors: Kuo-Chun Kao, Meng-Ting Lin, I-Mei Huang, Sin-Jhong Song
  • Patent number: 10928656
    Abstract: An apparatus having an asymmetric adjustable lens with a deformable optical element. The apparatus may also include one or more actuators coupled to a deformable element of the asymmetric adjustable lens in a direct-drive configuration such that (1) mechanical action of the one or more actuators applies force to the deformable optical element and (2) the force applied by the mechanical action of the one or more actuators changes an optical property of the asymmetric adjustable lens by deforming the deformable optical element. Various other devices, systems, and methods are also disclosed.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: February 23, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Katherine Marie Smyth, Andrew John Ouderkirk, John Cooke
  • Patent number: 10928623
    Abstract: Disclosed are examples of optical/electrical devices including a variable TIR lens assembly having a transducer, an optical lens and an electrowetting cell coupled to an exterior wall of the lens. The electrowetting cell contains two immiscible liquids having different optical and electrical properties. One liquid has a high index of refraction, and the other liquid has a low index of refraction. At least one liquid is electrically conductive. A signal causes the high index of refraction and the low index of refraction liquids to assume various positions within the electrowetting cell along the exterior wall. The properties of the optical lens, e.g. its total internal reflectivity, change depending upon the position of the respective liquids along the exterior wall. The light detection characteristics of the assembly change to receive an input light beam over a range of inputs or over a range of fields of view.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: February 23, 2021
    Assignee: ABL IP HOLDING LLC
    Inventors: David P. Ramer, An Mao, Jack C. Rains, Jr.
  • Patent number: 10928558
    Abstract: The disclosed optical lens assemblies may include a deformable element, a structural support element, a substantially transparent deformable medium positioned between the deformable element and the structural support element, a compliant peripheral component positioned between peripheral portions of the deformable element and the structural support element, and an actuator configured to displace at least a portion of the compliant peripheral component to deform the deformable element and change at least one optical property of the optical lens assembly. Related head-mounted displays and methods of fabricating such optical lens assemblies are also disclosed.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: February 23, 2021
    Assignee: Facebook Technolgies, LLC
    Inventors: John M. Cooke, Katherine Marie Smyth, Andrew John Ouderkirk
  • Patent number: 10921494
    Abstract: A liquid optical module is provided, including a liquid lens driving mechanism and a liquid lens assembly. The liquid lens driving mechanism includes a fixed portion, a movable portion and a driving assembly. The movable portion is movably connected to the fixed portion. The liquid lens assembly includes a liquid lens element, a fixing member and a deforming member. The fixing member is disposed on a first fixed portion surface of the fixed portion, and the deforming member is disposed on a movable portion surface of the movable portion. The movable portion surface and the first fixed portion surface face the same direction, and when the movable portion is driven by the driving assembly to move relative to the fixed portion, the liquid lens element is deformed by the deforming member, causing the optical properties of the liquid lens element to change.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: February 16, 2021
    Assignee: TDK TAIWAN CORP.
    Inventors: Kuo-Chun Kao, Meng-Ting Lin, I-Mei Huang, Sin-Jhong Song
  • Patent number: 10890693
    Abstract: A tunable acoustic gradient (TAG) lens includes an acoustic wave generating element and a refractive fluid in a casing cavity surrounded by a lens casing. The lens casing includes case ends which each include a window configuration, a case end rim portion and an enhanced axial compliance portion. The window configuration includes a window and a window mounting portion having an overall window mount dimension along the axial direction. The enhanced axial compliance portion is coupled between the window mounting portion and the case end rim portion and includes a reduced thickness region characterized by a material thickness that is at most 75% of the associated window mount dimension. The axial compliance portion is configured to enhance the axial deflection of the window mounting portion compared to the case end rim portion, when a periodic drive signal is applied to the acoustic wave generating element.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: January 12, 2021
    Assignee: Mitutoyo Corporation
    Inventors: William Todd Watson, Isaiah Freerksen
  • Patent number: 10882042
    Abstract: An active matrix electrowetting on dielectric (AM-EWoD) device including dual substrates with thin-film transistors (TFT) and capacitive sensing. As depicted herein the bottom substrate includes a first plurality of electrodes to propel various droplets through a microfluidic region, while the top substrate includes a second plurality of electrodes that are configured to interrogate the droplets with capacitive sensing. In some embodiments, the top substrate has zones of high-resolution sensing and zones of low-resolution sensing.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: January 5, 2021
    Assignee: E Ink Corporation
    Inventor: Ian French
  • Patent number: 10866431
    Abstract: A device is provided that may be operated when implanted within a body, when mounted to a surface of an eye, or when immersed in a fluid or otherwise exposed to a humid environment. The device includes at least one conductor that includes a valve metal. The valve metal is disposed on an external surface of the conductor such that, when the conductor exhibits a positive voltage relative to its environment, the valve metal forms or maintains a self-limiting oxide layer. The device is operated such that the mean voltage of the conductor is positive or zero relative to the environment, e.g., relative to another electrode or other conductor of the device that is in contact with fluid in the environment. Such a device can be operated for a protracted period of time in a humid environment without a hermetic seal disposed between the conductor and the humid environment.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: December 15, 2020
    Assignee: Verily Life Sciences LLC
    Inventors: Stein Kuiper, Daniel Otts
  • Patent number: 10838115
    Abstract: The invention relates to an optical system (1) comprising: a first focus tunable lens (10), a curved image sensor (30) configured to receive light (L) focused by the first focus tunable lens (10); an optical path (P) extending through the first focus tunable lens and to the curved image sensor; wherein the optical system (1) is configured to tune the focal length of the first focus tunable lens (10) by applying an electrical signal to the first focus tunable lens (10) such that light (L) traversing said optical path (P) is focused onto the image sensor (30).
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: November 17, 2020
    Assignee: OPTOTUNE AG
    Inventor: Manuel Aschwanden
  • Patent number: 10840374
    Abstract: A method of forming a semiconductor device can be provided by forming an opening that exposes a surface of an elevated source/drain region. The size of the opening can be reduced and a pre-amorphization implant (PAI) can be performed into the elevated source/drain region, through the opening, to form an amorphized portion of the elevated source/drain region. A metal-silicide can be formed from a metal and the amorphized portion.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: November 17, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chung-Hwan Shin, Sang-Bom Kang, Dae-Yong Kim, Jeong-Ik Kim, Chul-Sung Kim, Je-Hyung Ryu, Sang-Woo Lee, Hyo-Seok Choi
  • Patent number: 10830927
    Abstract: This invention provides a vision system that is arranged to compensate for optical drift that can occur in certain variable lens assemblies, including, but not limited to, liquid lens arrangements. The system includes an image sensor operatively connected to a vision system processor, and a variable lens assembly that is controlled (e.g. by the vision processor or another range-determining device) to vary a focal distance thereof. A positive lens assembly is configured to weaken an effect of the variable lens assembly over a predetermined operational range of the object from the positive lens assembly. The variable lens assembly is located adjacent to a front or rear focal point of the positive lens. The variable lens assembly illustratively comprises a liquid lens assembly that can be inherently variable over approximately 20 diopter. In an embodiment, the lens barrel has a C-mount lens base.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: November 10, 2020
    Assignee: Cognex Corporation
    Inventor: Laurens Nunnink
  • Patent number: 10823956
    Abstract: The present invention relates to a device and methods for cleaning a camera lens unit. In an embodiment of the present invention, the lens unit cleaning device includes: a cover glass (substrate), a plurality of electrodes successively arranged on the upper surface of the cover glass, a dielectric layer laminated on the upper surface of the electrode, and a hydrophobic layer laminated on the dielectric layer and having droplets formed on the surface. As different DC voltages are applied to a plurality of electrodes, the droplets move outward from the center of the cover glass.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: November 3, 2020
    Assignee: MYONGJI UNIVERSITY INDUSTRY AND ACADEMIA COOPERATION FOUNDATION
    Inventors: Sang Kug Chung, Kang Yong Lee
  • Patent number: 10821476
    Abstract: A device includes a piezoelectric diaphragm positioned on a frame. A fixed portion of the diaphragm is fixed relative to the frame and an active portion of the diaphragm is not fixed relative to the frame. The active portion of the diaphragm surrounds the fixed portion of the diaphragm and/or has a boundary with a concave shape.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: November 3, 2020
    Assignee: The Regents of the University of California
    Inventors: Benjamin Eovino, Liwei Lin, Sina Akhbari
  • Patent number: 10754145
    Abstract: An apparatus may include an adjustable fluid lens that includes a deformable element and a fluid that is substantially transparent and that is contained at least in part by the deformable element. The apparatus may additionally include a sensor that detects a property of the fluid that indicates a viscosity of the fluid. The apparatus may further include a control element that regulates, based at least in part on the property of the fluid, a speed with which to apply a deforming force to the deformable element. Additionally, the apparatus may include an actuator that adjusts an optical property of the adjustable fluid lens by applying the deforming force to the deformable element at the regulated speed. Various other apparatuses, systems, and methods are also disclosed.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: August 25, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Andrew J. Ouderkirk, Katherine Marie Smyth, John M. Cooke, Matthew James Hancock, Karol Constantine Hatzilias, Lu Lu, Nagi H. Elabbasi, Robin Sharma, Behnam Bastani
  • Patent number: 10754071
    Abstract: Systems and methods reduce temperature induced drift effects on a liquid lens used in a vision system. A feedback loop receives a temperature value from a temperature sensor, and based on the received temperature value, controls a power to the heating element based on a difference between the measured temperature of the liquid lens and a predetermined control temperature to maintain the temperature value within a predetermined control temperature range to reduce the effects of drift. A processor can also control a bias signal applied to the lens or a lens actuator to control temperature variations and the associated induced drift effects. An image sharpness can also be determined over a series of images, alone or in combination with controlling the temperature of the liquid lens, to adjust a focal distance of the lens.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: August 25, 2020
    Assignee: COGNEX CORPORATION
    Inventors: Laurens Nunnink, Mario Joußen
  • Patent number: 10733221
    Abstract: A system and method for identifying trending topics in a document corpus are provided. First, multiple topics are identified, some of which topics may be filtered or removed based on co-occurrence. Then, for each remaining topic, a frequency of the topic in the document corpus is determined, one or more frequencies of the topic in one or more other document corpora are determined, a trending score of the topic is generated based on the determined frequencies. Lastly, the remaining topics are ranked based on the generated trending scores.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: August 4, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Yongzheng Zhang, Rui Zhao, Chi-Yi Kuan, Yi Zheng
  • Patent number: 10709549
    Abstract: An accommodating intraocular lens comprises a first lens component, a second lens component, and an adhesive between portions of the two lens components. The cured adhesive bonds the lens components to form a fluid chamber. The lens components are bonded to one another along a seam which extends circumferentially along at least a portion of the lens components. The lens components may comprise the same polymer material. The cured adhesive also comprises the polymer or a prepolymer of the polymer to provide increased strength. The polymer is hydratable such that the lens components and the cured adhesive therebetween can swell together to inhibit stresses between the lens components and the cured adhesive.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: July 14, 2020
    Assignee: Shifamed Holdings, LLC
    Inventors: Claudio Argento, Bob Vaughan, Amr Salahieh, Tom Saul, Eric Willis
  • Patent number: 10705264
    Abstract: A varifocal lens module, consisting of a casing provided with a holding chamber, an opening end, an interconnecting hole, a soft lens disposed on the casing to seal the holding chamber, and a medium control device connects to the interconnecting hole. The soft lens is provided with a first curved surface having a first curvature exposed external of the casing and a second curved surface having a second curvature positioned interior of the holding chamber corresponding to the first curved surface. The medium control device is connected to the interconnecting hole for controlling the volume of the medium inside the holding chamber, whereby the change in volume of the medium changes the compression on the second curved surface, thereby modifying the second curvature of the second curved surface, producing a variation in the spacing between the second curved surface and the first curved surface to achieve a varifocal effect.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: July 7, 2020
    Assignee: CONCRAFT HOLDING CO., LTD.
    Inventors: Tzu-Ching Tsai, Jie-Ru Chen
  • Patent number: 10690921
    Abstract: An apparatus may include a proximal adjustable-focus lens. The apparatus may further include a distal adjustable-focus lens. The apparatus may additionally include an actuator coupled to both the proximal adjustable-focus lens and the distal adjustable-focus lens, such that mechanical action by the actuator simultaneously adjusts the proximal adjustable-focus lens and the distal adjustable-focus lens. Various other apparatuses, systems, and methods are also disclosed.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: June 23, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Andrew J. Ouderkirk, Katherine Marie Smyth, Lu Lu, John Cooke, Robin Sharma
  • Patent number: 10690815
    Abstract: The present invention relates to a lens device (1), comprising: a transparent and elastically expandable membrane (10), an optical element (20) opposing the membrane (10), a wall member (300), wherein the optical element (10) and the membrane (10) are connected to the wall member (300) such that a volume (V) is formed, a fluid (F) residing in said volume (V), and a lens shaping member (11) attached to the membrane (10).
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: June 23, 2020
    Assignee: OPTOTUNE CONSUMER AG
    Inventors: Manuel Aschwanden, Pit Gebbers
  • Patent number: 10630875
    Abstract: Disclosed is a liquid lens control circuit, which includes a liquid lens including a plurality of individual electrodes disposed in compartmental areas at the same level and a common electrode disposed at a different level from that of the individual electrodes, a voltage control circuit configured to supply voltages to the common electrode and at least one of the individual electrodes in the liquid lens in order to control an interface in the liquid lens, and a capacitance measuring circuit configured to calculate a capacitance between the common electrode and at least one of the individual electrodes in the liquid lens using a switched capacitor.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: April 21, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Young Seop Moon, Young Woon Kim
  • Patent number: 10558031
    Abstract: An electrowetting optical device is provided. The electrowetting optical device includes a conductive liquid and a non-conductive liquid. The non-conductive fluid includes a naphthalene based compound having Formula (I), Formula (II), and/or Formula (III): where R1, R2, and R3 are individually alkyl, aryl, alkoxy, or aryloxy groups; X includes carbon, silicon, germanium, tin, lead, and combinations thereof; and Z includes oxygen, sulfur, selenium, tellurium, polonium, and combinations thereof. The conductive liquid may additionally include a transmission recovery agent having Formula (IV) and/or Formula (V): where R4 is an alkyl, fluoroalkyl, aryl, alkoxy, or aryloxy group. The electrowetting optical device additionally includes a dielectric surface in contact with both the conductive and non-conductive liquids where the conductive and non-conductive liquids are non-miscible.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: February 11, 2020
    Assignee: Corning Incorporated
    Inventors: Benjamin Jean-Baptiste Francois Burger, Geraldine Malet Vasseur
  • Patent number: 10520753
    Abstract: The present invention relates generally to an arcuate liquid meniscus lens with a meniscus wall. Some specific embodiments include a liquid meniscus lens with a meniscus wall essentially in the shape of multiple segments of a frustum of a cone. Embodiments may also include a lens of suitable size and shape for inclusion in a contact lens.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: December 31, 2019
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Randall B Pugh, Daniel B Otts, Adam Toner, Edward R Kernick, James Daniel Riall, Sharika Snook
  • Patent number: 10520650
    Abstract: A tunable acoustic gradient (TAG) lens is provided including a lens casing, a refractive fluid, a controllable acoustic wave generating element (e.g., a piezoelectric vibrator) and an external reservoir configuration. An operational volume of the refractive fluid is contained in a casing cavity of the lens casing. The external reservoir configuration includes a deformable external fluid reservoir that contains a reserve volume of the refractive fluid and that is connected to the casing cavity by a flow channel. The flow channel enables the refractive fluid to flow back and forth between the casing cavity and the deformable external fluid reservoir in accordance with expansion and contraction of the refractive fluid (e.g., due to changes in temperature). The lens casing, deformable external fluid reservoir and flow channel are configured as a sealed system, with no intentional gas volume included in the sealed system.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: December 31, 2019
    Assignee: Mitutoyo Corporation
    Inventors: Isaiah Freerksen, Maxwell James Perkins
  • Patent number: 10444491
    Abstract: A variable focal length optical assembly may include a deformable entry lens element, a deformable first reflective element and a deformable second reflective element. Using a controller coupled to the deformable elements, an external force such as a mechanical, electrical, electromechanical, or electromagnetic force is applied to the deformable elements to provide any number of different focal lengths. Since the deformation of the deformable elements, and consequently the changes in focal length, occur much faster than the playback frame rate, a number of sub-frames, each containing an image obtained at a different focal length, are associated with each playback frame. The availability of multiple images in the form of sub-frames permits the selection of an optimal image for inclusion in the final playback frame sequence. The availability of multiple images in the form of sub-frames at different focal lengths also permits the seamless incorporation of zoom-in and zoom-out effects.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: October 15, 2019
    Assignee: SAIKOU OPTICS INCORPORATED
    Inventor: Eric Sanford
  • Patent number: 10429037
    Abstract: Optical devices are disclosed. In particular, optical devices including a collimated light source (140), at switchable diffuser (110), and at least one light deflecting element (120, 130) are disclosed. The electrically switchable diffuser (110), in combination with the at least light deflecting element (120, 130) can provide significant changes in the overall distribution of light at the electrically switchable diffuser (110) is switched between two or more states.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: October 1, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: John A. Wheatley, Guanglei Du
  • Patent number: 10371957
    Abstract: A display device according to an exemplary embodiment includes a display panel including a plurality of pixels, and a lens panel positioned at a side of the display panel in a direction in which the display panel is configured to display an image. The lens panel includes a first electrode having a plurality of recess portions, a second electrode having a plurality of openings respectively overlapping the plurality of recess portions one by one, and a lens formation layer positioned between the first electrode and the second electrode. A recess portion among the plurality of recess portions overlaps two or more pixels among the plurality of pixels, and an opening among the openings overlaps the two or more pixels among the plurality of pixels. A circumference of the opening is positioned inside a circumference of the recess portion.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: August 6, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Su Jung Huh, Beom Shik Kim, In SUn Hwang
  • Patent number: 10371936
    Abstract: A general method is provided for electronically reconfiguring the internal structure of a solid to allow precision control of the propagation of wave energy. The method allows digital or analog control of wave energy, such as but not limited to visible light, while maintaining low losses, a multi-octave bandwidth, polarization independence, large area and a large dynamic range in power handling. Embodiments of the technique are provided for large-angle beam steering, lenses and other devices to control wave energy.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: August 6, 2019
    Inventor: Leo D. DiDomenico
  • Patent number: 10365276
    Abstract: The present invention relates to devices and methods for the qualitative and/or quantitative detection of particles. In particular, the invention relates to devices for the detection of particles, comprising a reaction chamber formed within a chamber body between a first surface and a second surface, wherein the second surface is located opposite to the first surface, and one or more displacers, wherein the distance between the first surface and the second surface is variable via the one or more displacers at least in one or more parts of the surface area of the first surface and/or second surface. The invention also relates to corresponding methods for the detection of particles.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: July 30, 2019
    Assignee: ALERE TECHNOLOGIES GMBH
    Inventors: Eugen Ermantraut, Ralf Bickel, Torsten Schulz, Thomas Ullrich, Jens Tuchscheerer
  • Patent number: 10334693
    Abstract: A light source module including a light emitting element, a tunable-focal length lens and a controller is provided. The light emitting element is configured to emit a light beam. The tunable-focal length lens is disposed on a transmission path of the light beam. The controller is coupled to the tunable-focal length lens, and adjusts a characteristic of the tunable-focal length lens in a first status and a second status.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: June 25, 2019
    Assignee: Lite-On Technology Corporation
    Inventors: Yao-Chi Peng, Po-Chang Li, Ming-Hung Chien
  • Patent number: 10330885
    Abstract: A lens retaining method for retaining a lens in a lens retaining frame includes: arranging the lens in the lens retaining frame such that a lens surface of the lens is brought into contact with a protrusion of the lens retaining frame that protrudes in a radial direction; filling, after the lens has been arranged, an adhesive into a space formed between the lens surface and the protrusion, the space being partitioned in an axial direction by the lens surface and the protrusion; and curing the adhesive after the adhesive has been filled into the space.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: June 25, 2019
    Assignee: OLYMPUS CORPORATION
    Inventor: Takeshi Uehara
  • Patent number: 10288777
    Abstract: The present invention relates to transparent optical device elements comprising a deformable lens body and to a method for changing the refractive index (RI) of a deformable lens body. The deformable lens body of the invention has an improved mechanical stability, a high refractive index, an optimal degree of stiffness and sheer modulus for use as optical lens.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: May 14, 2019
    Assignee: poLight ASA
    Inventor: Lars Henriksen
  • Patent number: 10261470
    Abstract: A system and method for extending a projection boundary for a holographic display device. The system includes a display device with electroactive polymer strips attached to the bottom of the display device and two microfluidic display layers affixed to the top. The two microfluidic display layers have holographic projectors therebetween. Light is projected from the holographic projects through the second microfluidic layer and holographic objects are created where the projected light converges. A user changes the dimensions or location of a holographic object using finger gestures. The system calculates the focal length required to make the change instructed by the user and the microfluidic display layers deform to create a convex lens in the second microfluidic layer with the focal length required to make the change instructed by the user.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: April 16, 2019
    Assignee: International Business Machines Corporation
    Inventor: Sarbajit K. Rakshit
  • Patent number: 10232133
    Abstract: Provided herein is an endoscope comprising an end portion configured to take an image; a controller configured to control the end portion and process the image input by the end portion; and a connector configured to connect the end portion and the controller, wherein the end portion is provided with at least one lens apparatus surrounding an exterior surface of the end portion, the lens apparatus being adapted to be brought to various focuses, thereby providing an effect of obtaining images from various viewpoints at a short period of time, and when used as an endoscope, obviating the need to move the multi-view and multi-focused variable lens at the end portion, making it possible to reduce the thickness of the connector that connects the end portion of the endoscope with the controller.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: March 19, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sae Kwang Nam, Ki Uk Kyung, Bong Je Park, Sun Tak Park, Sung Ryul Yun
  • Patent number: 10139529
    Abstract: A deformable lens structure includes: a deformable first layer having a first outer surface adapted to receive an incident light beam, and a first inner surface opposite the first outer surface; at least a first central portion of the first layer being transparent to the light beam; a second layer having a second inner surface facing the first inner surface and a second outer surface opposite the second inner surface, at least a second central portion of the second layer being transparent to the light beam; a shaped spacer element positioned between the first inner surface and the second inner surface, and an inner chamber containing a liquid transparent to the light beam; first and second electrostatic actuators operatively associated with the first layer and second layers and positioned at the first central portion of the first layer and at the second central portion of the second layer, respectively.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: November 27, 2018
    Assignee: ADAPTICA S.R.L.
    Inventors: Gianlugi Meneghini, Stefano Bonora, Alessandro Brunelli
  • Patent number: 10126543
    Abstract: An electrowetting element comprises a first fluid and a second fluid substantially immiscible with the first fluid. Greater than or equal to 0.05 wt % and less than or equal to 15 wt % of the second fluid is water.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 13, 2018
    Assignee: Amazon Technologies, Inc.
    Inventor: Romaric Mathieu Massard
  • Patent number: 10101677
    Abstract: An inspection apparatus (for example a scatterometer) comprises: a substrate support for supporting a substrate and an optical system. An illumination system illuminates a target (T) with radiation. A positioning system (518) moves one or both of the optical system and the substrate support so as to position an individual target (T) relative to the optical system so that the imaging optics can use a portion of the diffracted radiation to form an image of the target structure on an image sensor (23). A liquid lens (722) is controlled (902) by feed-forward control to maintain said image stationary against vibration and/or scanning movement between the optical system and the target structure. In a second aspect, a liquid lens (1324, 1363) to correct chromatic aberration during measurements made at different wavelengths. This may improve focusing of the illumination on the target (T), and/or focusing of an image on the image sensor (23).
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: October 16, 2018
    Assignee: ASML Netherlands B.V.
    Inventors: Kim Gerard Feijen, Henricus Wilhelmus Maria Van Buel, Martinus Joseph Kok
  • Patent number: 10085637
    Abstract: a contact lens that monitors the radius of curvature of cornea includes an amplification chamber, am annular membrane, a microfluidic channel, and a gas reservoir within a top and bottom lens layers of the contact lens. The annular membrane is positioned within the amplification chamber and is in fluid communication with the gas reservoir through the microfluidic channel. A working gas within the gas reservoir and a working fluid within the amplification chamber and the microfluidic channel create a fluid-gas equilibrium pressure interface. The curvature change of the cornea results the amplification chamber wall and the annular membrane to deflect, wherein the deflection results the fluid-gas equilibrium pressure interface baseline to change within the microfluidic channel. Then the baseline position change is recorded by an external imaging system to analysis sensitivity calculation of the cornea.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: October 2, 2018
    Assignee: SMARTLENS, INC.
    Inventors: Ismail Emre Araci, Murat Baday