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874 results about "Liquid lens" patented technology
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Liquid Lens System
ActiveUS20100202054A1Change shapeGood effectDiffusing elementsDiffraction gratingsEngineeringActuator
The invention is directed to an optical system (1). The optical system (1) has a housing (2) with an opening (3) extending through the housing (2) encompassing an in general constant volume (V). A membrane (6) with two or more membrane sections is arranged across the opening separating the volume (V) in a first and a second chamber (7, 8) filled with at least one fluid. The membrane is attached to an annular holding frame (9). An actuator is interconnected to the membrane (6) directly or indirectly to change the optical behaviour of the membrane.
Owner:OPTOTUNE AG
Variable-focus liquid lens
A variable focus liquid lens is formed using two substrates with at least two through holes in at least one of the substrates. One end of each through hole is covered with a distensible membrane, one on the exterior surface of the substrate and the other on the interior surface. The substrates are sealed about the periphery to form a chamber and the chamber is filled with a liquid material. When pressure is applied to the membrane the liquid in the chamber is redistributed to form the lens. The variable focus liquid-filled lens is formed by providing a first and second substrate, forming at least two through holes in at least one of the first and second substrate, sealing one end of each of the at least two holes with a flexible transparent membrane, and sandwiching a liquid in a chamber formed between the first and second substrate.
Owner:UNIV OF CENT FLORIDA RES FOUND INC
Variable focus liquid lens
ActiveUS20060164731A1Variable focal lengthHigh transparencyNon-optical partsOptical partsEngineeringMembrane configuration
A liquid-filled variable focus lens cell is disclosed. The liquid lens cell consists of four parts: a clear distensible membrane, a transparent wall member, liquid with a fixed volume stored in lens cell chamber, and an annular periphery sealing ring. The inner surfaces of the annular sealing ring are sealed with distensible membrane. The radius of the annular sealing ring is changeable, similar to a conventional iris diaphragm. By tuning the radius of the annular sealing ring, the stored liquid in the lens cell will be redistributed, thus change the curvature of the distensible membrane. Therefore, the liquid lens cell can cause light to converge or diverge. The liquid filled lens can be operated mechanically or automatically.
Owner:UNIV OF CENT FLORIDA RES FOUND INC
Image stabilization circuitry for liquid lens
ActiveUS20100295987A1Television system detailsColor television detailsCamera lensImage stabilization
A method of controlling a liquid lens in an imaging device, the liquid lens including a liquid-liquid interface between first and second immiscible liquids deformable by electrowetting; a chamber containing the first and second liquids, the first liquid being an insulating liquid and the second liquid being a conducting liquid; and a first electrode in contact with the second liquid and at least one second electrode insulated from the second liquid by an insulating layer, the first and second electrodes being arranged to allow a plurality of voltages levels to be applied between the first and second electrodes to control the curvature of the liquid-liquid interface, the method including: determining motion data representative of a movement of the imaging device; determining focusing data representative of a desired focus of the imaging device; determining the plurality of voltage levels to be applied between the first and second electrodes, wherein each of the voltage levels is a function of the motion data, the focusing data and at least one parameter relating to the liquid lens and preliminary determined in a calibration phase.
Owner:INVENIOS FRANCE SAS
Variable focus liquid lens
ActiveUS7142369B2Variable focal lengthHigh transparencyNon-optical partsOptical partsCamera lensEngineering
A liquid-filled variable focus lens cell is disclosed. The liquid lens cell consists of four parts: a clear distensible membrane, a transparent wall member, liquid with a fixed volume stored in lens cell chamber, and an annular periphery sealing ring. The inner surfaces of the annular sealing ring are sealed with distensible membrane. The radius of the annular sealing ring is changeable, similar to a conventional iris diaphragm. By tuning the radius of the annular sealing ring, the stored liquid in the lens cell will be redistributed, thus change the curvature of the distensible membrane. Therefore, the liquid lens cell can cause light to converge or diverge. The liquid filled lens can be operated mechanically or automatically.
Owner:UNIV OF CENT FLORIDA RES FOUND INC
Auto-focusing camera module having liquid lens
InactiveUS20080267603A1Improve productivitySimple assembly structureProjector focusing arrangementCamera focusing arrangementCamera lensManufacturing cost reduction
Provided is an auto-focusing camera module having a liquid lens. The auto-focusing camera module includes a lens barrel having a liquid lens and a solid lens stacked and disposed therewith; an image sensor for focusing light that is passed through the liquid lens and the solid lens; a substrate provided in a lower end of the lens barrel to electrically mount the image sensor; and a power supply unit fixed integrally in the lens barrel and electrically coupled between the liquid lens and the substrate to apply a power source to the liquid lens. Therefore, the auto-focusing camera module may be useful to control its focus to coincide with high pixels and high performances of the camera module, manufacture a small final product by lowering the entire height of the camera module, enhancing the productivity of the camera module by employing a simple liquid lens to simplify an assembly structure of the liquid lens that is in contact with the substrate, and reduce the manufacturing cost.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Variable focus spectacles
Variable focus spectacles which comprise i) a focus module that includes two variable focus lens sections, said sections each including a first fixed plastic lens and an adjustable focus liquid lens, and ii) a second fixed plastic lens that preferably includes most or all of the optical power needed by the intended wearer to correct his / her distance vision. The second fixed plastic lens is preferably attached to the focus module by magnetic attraction.
Owner:LANE RES
Objectives as a microlithography projection objective with at least one liquid lens
InactiveUS20060221456A1Great freedomExpand accessPhotomechanical exposure apparatusMicrolithography exposure apparatusRefractive indexLength wave
The invention relates to an objective designed as a microlithography projection objective for an operating wavelength. The objective has a greatest adjustable image-side numerical aperture NA, at least one first lens made from a solid transparent body, in particular glass or crystal, with a refractive index nL and at least one liquid lens (F) made from a transparent liquid, with a refractive index NF. At the operating wavelength the first lens has the greatest refractive index nL of all solid lenses of the objective, the refractive index nF of the at least one liquid lens (F) is bigger than the refractive index nL of the first lens and the value of the numerical aperture NA is bigger than 1.
Owner:CARL ZEISS SMT GMBH
Liquid modular lens for condensing solar energy
InactiveUS6124980ALow costCosts associated with installationsSolar heating energyPrismsPrismEngineering
PCT No. PCT / ES97 / 00119 Sec. 371 Date Mar. 30, 1998 Sec. 102(e) Date Mar. 30, 1998 PCT Filed May 8, 1997 PCT Pub. No. WO97 / 42452 PCT Pub. Date Nov. 13, 1997A condenser of solar energy on a moving structure, with east-west solar tracking and a modular liquid lens, the former consisting of a system capable of concentrating the solar energy by the incorporation of one or several modular liquid lenses, and the latter comprised by the connection of different transparent lenticular recipients, capacitated for installation on a metallic structure of spherical or cylindrical shape which, by means of the action of a divergent lens and a liquid prism transmits the heat to the fluid in a primary circuit which by means of a heat exchanger provides the temperature necessary for the different energy uses.
Owner:CERBELL ROBERTO SANTANDER
Zoom lens three-D display
An image integrated solid display device uses dynamic adjustable-focus liquid lens array, wherein the lens array is composed of a multilayer sandwich liquid lens unit, the focus adjustment of the lens array is synchronized with the display frame speed of a two-dimension screen, to time-sharing realize different spatial solid images, use the vision holding effect of eye to improve the three-dimension depth feeding of solid image, and adjust the contact of two liquids in the liquid lens unit into a plane to switch between two-dimension and three-dimension display modes.
Owner:SOUTHEAST UNIV
Zoom lens system having variable power element
A multiple group variable focal length lens is provided. The lens has a first lens group including a variable power lens element and is positioned in a stationary manner along an optical axis. The lens also has a second lens group moveably positioned along the optical axis. The variable power lens element can be an electrically controllable liquid lens having a surface with a variable radius of curvature created by two liquids having distinct indices of refraction with one of the liquids having an index of refraction greater than 1.60. Alternatively or additionally, at least one of the liquids used in the liquid lens can include nanoscale particles.
Owner:MONUMENT PEAK VENTURES LLC
Tunable liquid lens with reduced aberration
InactiveUS20090213321A1Reduce impactTelevision system detailsProjector focusing arrangementPhotovoltaic detectorsPhotodetector
A tunable optical imaging system uses a fixed lens and a tunable liquid crystal lens that is operated only outside of an operational range of high aberration. A voltage range applied to change the optical power of the liquid crystal lens is limited to a continuous tunable range of low aberration. The relative positioning between the lens and a corresponding photodetector, and the relative lens powers of a fixed lens and the tunable lens, may be selected to compensate for any optical power offsets resulting from the limitation of the voltage range of the tunable lens. The lens may be operated in either positive tunability or negative tunability mode.
Owner:POINT FINANCIAL
Method and device for lateral adjustment of image
A liquid lens, according to the electrowetting principle, is used in an imaging system to affect the optical axis of the imaging system. In particular, a seal compartment having a first side and an opposing second side is used to dispose a liquid lens on the first side. A plurality of electrode areas are disposed adjacent to the first side and a common electrode is disposed adjacent to the second side. In order to compensate for undesirable image shifting due to hand motion, different voltage levels are applied to the plurality of electrode areas so that the electric field applied on the liquid lens is non-uniform, causing deformation of the liquid lens. The voltage levels are determined such that the shift in the optical axis due to the deformation of the liquid lens substantially cancels out the motion-induced image shift.
Owner:NOKIA TECHNOLOGLES OY
Lens assembly with integrated feedback loop for focus adjustment
This invention provides a removably mountable lens assembly for a vision system camera that includes an integral auto-focusing liquid lens unit, in which the lens unit compensates for focus variations by employing a feedback control circuit that is integrated into the body of the lens assembly. The feedback control circuit receives motion information related to the bobbin of the lens from a position sensor (e.g. a Hall sensor) and uses this information internally to correct for motion variations that deviate from the lens setting position at a desired lens focal distance setting. Illustratively, the feedback circuit can be interconnected with one or more temperature sensors that adjust the lens setting position for a particular temperature value. In addition, the feedback circuit can communicate with an accelerometer that reads a direction of gravity and thereby corrects for potential sag in the lens membrane based upon the spatial orientation of the lens.
Owner:COGNEX CORP
Optical system for ultraviolet light
ActiveUS20060119750A1Increase the number ofHigh refractive indexMirrorsOptical filtersFluoride crystalsUltraviolet lights
An optical system for ultraviolet light having wavelengths λ≦200 nm, which may be designed in particular as a catadioptric projection objective for microlithography, has a plurality of optical elements including optical elements made of synthetic quartz glass or a fluoride crystal material transparent to a wavelength λ≦200 nm. At least two of the optical elements are utilized for forming at least one liquid lens group including a first delimiting optical element, a second delimiting optical element, and a liquid lens, which is arranged in an interspace between the first delimiting optical element and the second delimiting optical element and contains a liquid transparent to ultraviolet light having wavelengths λ≦200 nm. This enables effective correction of chromatic aberrations even in the case of systems that are difficult to correct chromatically.
Owner:CARL ZEISS SMT GMBH
Apparatus und Method for Rendering a Virtual Monitor on Smart Ophthalmic Devices in Augmented Reality Environments
InactiveUS20170336641A1Minimize discomfortReduce simulator sicknessStatic indicating devicesImage data processingVirtualizationGeolocation
An apparatus and a method are described herein related to the art of augmented reality type monitor virtualization. A monitor-virtualization system, such as a head-mountable device, an ophthalmic device or an intraocular implant, can render a virtual monitor in augmented reality. A liquid lens or an optical phased array can position the virtual monitor in space by optical means. A dimmable occlusion matrix can be additionally operated such as to make the image of the virtual monitor substantially opaque. A coordinator module can synchronize the activities of monitor positioning and occlusion masking. The virtual monitor can be anchored to real-world artifacts using bokode technology. Various dimming modes of the occlusion matrix reduce operator fatigue. The apparatus may operate in smart sunglass mode when the virtual monitor function is paused. The virtual monitor can be hidden or visualized differently when thresholds in terms of user geolocation or viewing angle are breached.
Owner:VON & ZU LIECHTENSTEIN MAXIMILIAN RALPH PETER
Liquid lens with curved contact surface
A liquid lens having a curved contact surface with inner fluids. The liquid lens is configured to adjust a focal distance using electro-wetting and includes a base having an insulator film formed thereon and connected with an electrode. The liquid lens also includes a first fluid disposed on the base and a second fluid disposed on the first fluid. The liquid lens further includes a cover for hermetically sealing the first and second fluids, the cover connected to the electrode and made of a light-transmitting material. According to the present invention, the curvature of a meniscus between the fluids is allowed to change sensitively or insensitively in response to voltage. This allows application of the liquid lens to various electronic devices and a miniaturized structure with a small thickness.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Liquid lens with piezoelectric voltage converter
InactiveUS7443597B2Easy to manufactureTelevision system detailsSolid-state devicesOptical propertyPiezoelectric voltage
An electronic camera module includes a lens or refractive element formed by a pair of immiscible liquids and having optical properties which can be varied by applying a voltage so as to deform the meniscus. One of the two liquids extends from the meniscus all the way to the front surface of the sensor, so that light passing through the meniscus does not encounter further changes in refractive index enroute to the sensor.
Owner:TESSERA INC
Camera Module Including Liquid Lens, Optical Device Including the Same, and Method of Manufacturing Camera Module Including Liquid Lens
ActiveUS20170315274A1Simple structureReduce space sizeTelevision system detailsPrintersComputer moduleCamera module
An embodiment of a camera module includes a holder configured such that the upper and lower portions of the holder are open and such that a first hole and a second hole, opposite to the first hole, are formed in the side surface of the holder, a first lens unit coupled to the upper portion of the holder, a second lens unit coupled to the lower portion of the holder, and a liquid lens disposed in the first hole and the second hole of the holder between the first lens unit and the second lens unit, the liquid lens protruding outward from the side surface of the holder, wherein at least a portion of the liquid lens may be spaced apart from the inner surface of the holder.
Owner:LG INNOTEK CO LTD
Electronically controlled focusing ophthalmic device
According to a first aspect, the invention relates to an electrically controlled focusing ophthalmic device (43) to be worn by a user, comprising:—at least one active liquid lens comprising a liquid / liquid interface movable by electrowetting under the application of a voltage,—a driver for applying a DC voltage to said active liquid lens, the amplitude of the voltage to be applied being a function of the desired focusing;—a sensor (41) for detecting eyelid closing events and / or microsaccades of the user;—a controller for synchronizing said sensor and the driver, such that the driver may reverse the polarization of the DC voltage during a microsaccade and / or an eyelid closing event of the user.
Owner:INVENIOS FRANCE SAS
Multiple liquid lens driver
The invention concerns drive circuitry for generating a plurality of independent drive voltage signals for a plurality of electrodes of at least one liquid lens, the liquid lens comprising first and second miscible liquids, an interface between the first and second liquids being movable by electro wetting by application of a drive voltage signal to at least one electrode of the liquid lens, the drive circuitry including generating circuitry (406, 408, 410, 412) arranged to generate a fixed drive voltage (Vdc); a duty cycle controller (418) arranged to receive data values indicating a duty cycle to be applied to each of the plurality of electrodes, and to generate a control timing signal for each of the plurality of electrodes, each control timing signal having the duty cycle indicated by the controller; and driving means (426, 428, 430, 432) arranged to generate an independent drive voltage signal for each of the plurality of electrodes by selectively applying the fixed drive voltage, based on the control timing signal associated with each liquid lens.
Owner:VARIOPTIC SA
Optical system for ultraviolet light
ActiveUS7256932B2Increase the number ofHigh refractive indexMirrorsOptical filtersFluoride crystalsUltraviolet lights
Owner:CARL ZEISS SMT GMBH
Liquid optics zoom lens and imaging apparatus
Owner:MONUMENT PEAK VENTURES LLC
Virtual monitor display technique for augmented reality environments
ActiveUS9726896B2Danger of compromisingImprove privacyCathode-ray tube indicatorsImage data processingVirtualizationImage resolution
Owner:VON & ZU LIECHTENSTEIN MAXIMILIAN RALPH PETER
Method and apparatus for eye-scan authentication using a liquid lens
ActiveUS8233673B2Digital data processing detailsUser identity/authority verificationRetinaComputer science
A method and apparatus for providing eye-scan authentication using an adaptive liquid lens are disclosed. For example, in one embodiment, the method receives a request for eye-scan authentication from a mobile endpoint device of a user, wherein the request comprises a first retinal image of the user captured using an adaptive liquid lens of the mobile endpoint device. The method obtains a second retinal image of the user, wherein the second retinal image is a stored retinal image of the user. The method authenticates the first retinal image against the second retinal image. In another embodiment, the method captures a first retinal image of a user via a mobile endpoint device of the user, wherein the mobile endpoint device comprises an adaptive liquid lens. The method then sends a request for eye-scan authentication from the mobile endpoint device over a network, wherein the request comprises the first retinal image.
Owner:AT&T INTPROP I LP
Liquid zoom lens
A liquid zoom lens mounted on a portable terminal is provided. In the liquid zoom lens, a cylindrical body has upper and lower openings to which one pair of lenses is coupled. An auto-focus lens part includes a first insulating liquid layer, a first electrolyte layer, and a first lens. The first insulating layer and the first electrolyte layer are disposed to form an interface at a lower portion of the body. The first lens is disposed on the first electrolyte layer and has a periphery closely attached to a lower portion of an inner periphery of the body. An optical zoom lens part includes a second insulating liquid layer, a second electrolyte layer, and a second lens. The second insulating liquid layer and the second electrolyte layer are disposed to form an interface on the first lens. The second lens is fixed to be movable within the second insulating liquid layer, such that a periphery is closely attached to the inner periphery of the body. Accordingly, the auto-focus function and the optical zoom function can be simultaneously achieved through a single liquid lens whose curvature is varied by the difference of the inherent refractive index between the electrolyte and the insulating liquid.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Optical lens arrangement for fixed lenses and a liquid lens
An optical lens arrangement including a lens barrel having a monolithic structure and including a first, a second, a third, and a fourth contact region having a common axis, a liquid lens having a structure containing a first conductive liquid and a second insulating liquid, both liquids immiscible, having different refractive indices and meeting each other at a liquid-liquid interface the curvature of which is controllable by a voltage applied to first and second electrode, wherein the structure has first and second fixed lenses in contact respectively with one of the liquids, and a third fixed lens, wherein outer edges of the first, second and third fixed lenses are positioned in contact with respective first, second and third contact regions of the lens barrel to align the first, second and third fixed lenses with each other, and wherein the fourth contact region contacts an edge of the liquid-liquid interface.
Owner:VARIOPTIC SA
Auto-focusing optical system for camera module
InactiveUS7142368B2Small sizeHigh resolutionTelevision system detailsProjector focusing arrangementOptical powerCamera module
The present invention relates to an auto-focusing optical system, and more particularly, to an auto-focusing optical system for a camera module, capable of obtaining a high resolution in a small size using a liquid lens whose curvature is varied depending on an applied voltage. In the auto-focusing optical system, a first lens group has a liquid lens whose curvature is varied and having a plus optical power, a second lens group has a plus optical power, and a third lens group has a minus optical power. Thanks to an auto-focusing optical system including a liquid lens according to the present invention, not only a manufacturing in a small size is possibly realized but also a high resolution can be obtained, and power consumption is small.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD
Double-layer liquid crystal lens apparatus
ActiveUS20110234934A1Simple structurePreferable optical focal length modulating functionNon-linear opticsOptical partsPolarizerOptical pathlength
A double-layer liquid crystal lens apparatus having two liquid lens structures is provided. A driving voltage of each liquid crystal lens structure is controlled by an active device disposed thereon. When an incident light is passing through the liquid crystal lens structures, the optical path difference of the incident light is compensated by the liquid crystal lens structures, so that the double-layer liquid crystal lens apparatus performs the focusing function well without using a polarizer. Applying a suitable driving voltage on each of the active devices, the double-layer liquid crystal lens apparatus has a function of modulating focal length focusing / diverging the light, like a convex lens or a concave lens.
Owner:SILICON TOUCH TECH INC
Variable Power Endoscope Based On Liquid Lens Technology
An endoscope realized as either a borescope or a fiberscope including one or more fluid filled lenses is described. In an embodiment, the optical power of the fluid filled lenses may be adjusted to adjust the focal length associated with the endoscope. Thus, variable working distances are allowable while maintaining focus on an object in front of the endoscope. The endoscope may include a distance sensor, which is used to determine a distance between the endoscope and a sample. A processor may compare the measured distance to the current optical power of the one or more sealed fluid filled lenses. The processor may transmit signals to one or more actuators coupled to one or more sealed fluid filed lenses to change the optical power of the one or more sealed fluid filled lenses based on the comparison.
Owner:ADLENS BEACON INC
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