Abstract: The disclosed optical lens assemblies may include a pre-strained deformable element that exhibits a non-uniform mechanical strain or stress profile, a structural support element coupled to the pre-strained deformable element, and a deformable medium positioned between the pre-strained deformable element and the structural support element. Related head-mounted displays and methods of fabricating such optical lens assemblies are also disclosed.

Abstract: The present disclosure discloses a general speech enhancement method and apparatus using multi-source auxiliary information. The method includes following steps: S1: building a training data set; S2: using the training data set to learn network parameters of a model, and building a speech enhancement model; S3: building a sound source information database in a pre-collection or on-site collection mode; S4: acquiring an input of the speech enhancement model; and S5: taking a noisy original signal as a main input of the speech enhancement model, taking auxiliary sound signals of a target source group and auxiliary sound signals of an interference source group as side inputs of the speech enhancement model for speech enhancement, and obtaining an enhanced speech signal.

Abstract: A control system for an optical assembly having a fluid optical cell coupled to a hydraulic drive system includes a detector system that detects a line-of-sight of a user based on electromagnetic energy reflected from an eye of a user. The control system additionally includes a controller configured to determine a distance to an observed object based on the detected line-of-sight. The control system is also configured to control the hydraulic drive system to modify hydraulic pressure applied to the fluid optical cell such that the fluid optical cell is focused on the observed object.

Abstract: An intraocular lens (IOL) having an optical axis extending in an anterior-posterior direction and an equator extending in a plane substantially perpendicular to the optical axis is described. The IOL includes: an elastic anterior face located anterior to the equator; a posterior face located posterior to the equator, wherein the anterior face, the posterior face, or both comprises a poly(dimethylsiloxane) elastomer having a durometer between about 20 Shore A to about 50 Shore A; and a chamber located between the anterior face and the posterior face comprising a silicone oil comprising polysiloxanes comprising diphenyl siloxane and dimethyl siloxane units, the silicone oil having a maximum viscosity of about 800 cSt at 25° C.

Abstract: Examples include a device including a fluid lens having a membrane (that may be in elastic tension), a substrate, a fluid at least partially enclosed between the membrane and the substrate, and a support structure configured to provide a guide path for an edge portion of the membrane, such as a membrane attachment at a periphery of the membrane. The guide path may be configured to greatly reduce (or substantially eliminate) changes in the elastic energy of the membrane as the membrane profile is adjusted. The guide path may be configured so that the elastic force exerted by the membrane is generally normal to the guide path for each location on the guide path. Adjustment of the membrane profile may include applying an actuation force that is normal to the elastic force exerted by the membrane. Various other methods and apparatus are also disclosed.

Abstract: An eyewear device comprises a left lens assembly and a right lens assembly. The left lens assembly includes a left focus tunable lens and a left focus fixed lens. A right lens assembly includes a right focus tunable lens and a right focus fixed lens. The eyewear device may be used in 3D display applications, virtual reality applications, augmented reality applications, remote presence applications, etc. The eyewear device may also be used as vision correction glasses.

Abstract: An optical lens for vision correction includes a first image fusion area centered on a visual axis (L) of the eye (E) of a user and including a plurality of first dioptric portions randomly arranged around the first image fusion area and fused to have a first diopter (N), and a second image fusion area connected to and surrounds the first image fusion area and including a plurality of second dioptric portions randomly arranged around the second image fusion area and fused to have a second diopter (M). The first diopter |N| is smaller than the second diopter |M|. The longest width of each of the first and second dioptric portions relative to the visual axis (L) is smaller than 200 nanometers.

Abstract: An example electronic apparatus for switching microlenses includes a microlens including a plurality of microstructures to bend light. The electronic apparatus also includes a chamber coupled to the microlens to receive a liquid with an optical index that matches an optical index of the microlens. The electronic apparatus further includes an electronic device coupled to the chamber to manipulate the liquid to achieve a target optical state of the microlens.

Abstract: Adjustable focus spectacles using fluid displacement lens units with bipolar membrane distension and a non-circular periphery. The lens unit includes front and rear mounting rings, front and rear distensible membranes respectively mounted on the two mounting rings, a ring shaped flexible seal disposed between the two mounting rings along their peripheries, and front and rear clamping rings for respectively clamping the flexible seal to the front and rear mounting rings. The sealed space defined by the two distensible membranes and the flexible seal is filled with an optical fluid. The two mounting rings are pivotally coupled together at a pivot located along the periphery of the lens unit. A biasing spring is affixed to the front and rear mounting rings at a second location on their periphery to urge them away from each other. An assembly process for the lens unit is also disclosed.

Abstract: A deformable membrane assembly comprising a fixed support, a fluid-filled envelope, one wall of which is formed by an elastic membrane that is held under tension around its edge by a flexible membrane supporting member, the supporting member being coupled to the fixed support at a plurality of discrete control points around the supporting member by engaging members for controlling the position of the membrane edge; and an adjuster for adjusting the pressure of the fluid within the envelope to adjust the shape of the membrane; wherein at least three control points are provided that are situated around the membrane edge at spaced locations selected to increase the energy of the lowest order out-of-plane bending mode of the supporting member while allowing the membrane to deform according to one or more selected Zernike polynomials. An article of eyewear comprising such a deformable membrane assembly is also disclosed.

Abstract: A meniscus shaped lens module comprises one or more structures that decrease an amount of pressure or force to move one or more surfaces of the lens module and increase a separation distance of anterior and posterior surfaces of the module in order to provide an increase in optical power. A lens structure of the module comprises one or more of a pattern of a surface of a central chamber, a meniscus, a reduced diameter or a soft material in order to provide increased amounts of curvature of an outer contact lens surface with decreased amounts of pressure. The pattern can be formed in one or more of many ways, and may comprise one or more of folds, patterning, bellows or concertinaed surface of an optically transmissive material having a substantially uniform thickness such as a sheet of a membrane material.

Abstract: An actuator assembly for an adjustable fluid-filled lens is provided. In some embodiments, the actuator assembly includes a clamp configured to adjust the optical power of the fluid lens module when the clamp is compressed. In some embodiments, a magnetic element is configured to adjust the optical power of the fluid-filled lens. In some embodiments, a plunger changes the optical power of the fluid lens module. In some embodiments, a reservoir is configured such that deformation of the reservoir changes the optical power of the fluid-filled lens. In some embodiments, a balloon is configured to deform the reservoir. In some embodiments, an adjustable fluid-filled lens includes a septum configured to be pierceable by a needle and automatically and fluidly seal a fluid chamber after withdrawal of the needle. In some embodiments, a thermal element can heat fluid within a fluid chamber to change an optical power of the lens module.

Abstract: A non-round fluid lens assembly includes a non-round rigid lens and a flexible membrane attached to the non-round rigid lens, such that a cavity is formed between the non-round rigid lens and the flexible membrane. A reservoir in fluid communication with the cavity allows a fluid to be transferred into and out of the cavity so as to change the optical power of the fluid lens assembly. In an embodiment, a front surface of the non-round rigid lens is aspheric. Additionally or alternatively, a thickness of the flexible membrane may be contoured so that it changes shape in a spheric manner when fluid is transferred between the cavity and the reservoir.

Abstract: A deformable membrane assembly comprises an at least partially flexible fluid-filled envelope, one wall of which is formed by an elastic membrane that is held around its edge by a resiliently bendable supporting ring, a fixed support for the envelope and selectively operable means for causing relative movement between the supporting ring and the support for adjusting the pressure of the fluid in the envelope, thereby to cause the membrane to deform. The bending stiffness of the ring varies round the ring such that upon deformation of the membrane the ring bends variably to control the shape of the membrane to a predefined form. The moving means comprise a plurality of ring-engaging members that are arranged to apply a force to the ring at spaced control points.

Abstract: This invention describes Ophthalmic Devices with media inserts that have nanostructured Metasurface elements upon or within them. In some embodiments passive ophthalmic devices of various kinds may be formed. Methods and devices for active ophthalmic devices based on Metasurface structures may also be formed.

Abstract: An image stabilization and tracking system includes a primary imaging detector, a stabilization and tracking detector, an image processing and correction command control, and an adaptive optic device. The primary imaging detector is configured to detect, within a field of view, images of a primary object in an optic image. The stabilization and tracking detector is disposed outside of the field of view, and is configured to detect images of a tracking object in the optic image. The image processing and correction command control is coupled to receive the images of, and is configured to detect relative movement of, the tracking object. The adaptive optic device is coupled to receive correction commands and is configured, in response thereto, to move and thereby vary a position of the optic image.

Abstract: A variable focus optical apparatus including a rigid, curved, transparent optical component; two transparent, distensible membranes attached to a periphery of the rigid optical component to define two cavities, a first cavity between the rigid optical component and a first membrane and a second cavity between the first membrane and a second membrane; and a variable amount of fluid filling each of the cavities, and a reservoir containing additional fluid and in fluid communication with the cavity, wherein the reservoir is configured to provide injection of fluid into the cavity or withdrawal of fluid out of the cavity in response to a force or an impulse.

Abstract: A deformable membrane assembly 1 comprising a fixed support; a fluid-filled envelope, one wall of which is formed by an elastic membrane 8 that is held under tension around its edge by a flexible membrane supporting member 2, 10, the membrane supporting member being coupled to the fixed support at a plurality of discrete control points 120 round the supporting member by respective engaging members for controlling the position of the membrane edge relative to the fixed support at the control points, and the member being unconstrained between said control points; and a selectively operable pressure adjuster for adjusting the pressure of the fluid within the envelope, thereby to adjust the shape of the membrane; wherein at least three control points are provided which are situated round the membrane edge at spaced locations on the member that are selected to increase the energy of the lowest order out-of-plane bending modes of the supporting member in response to loading through tension in the membrane that do n

Abstract: Adjustable focus eyeglasses where the range of adjustment can be moved. That is, if a pair of adjustable focus eyeglasses have a range of 0 diopters to 2.75 diopters (to provide a 2.75 D ADD for reading for an emmetrope), this invention could, for example, permit the user to move the range from 0 D to 2.75 D to 2.00 D to 4.75 D so as to accommodate a short term change in the user's distance vision requirement. Each eye can be adjusted independently.

Abstract: The present invention provides a deformable membrane assembly 1 comprising an elastic membrane 8 that is held under tension around its edge by a bendable membrane supporting member 2,10, a body of fluid in contact with one face of the membrane, the pressure of the fluid being controllable for adjusting the shape of the membrane, and one or more bending controllers 24 acting on the supporting member 2, 10 to control the bending of the supporting member in response to loading through tension in the membrane. The bending stiffness of the membrane-supporting member 2, 10 varies round its extent to control the profile of the edge of the membrane 8; etc. upon actuation. A variety of different types of bending controllers are disclosed which permit out-of-plane bending of the supporting member 2, 10 but prevent or control in-plane bending or deformation of the supporting member.

Abstract: A device and/or apparatus that comprises a dynamic optical lens is provided. A first apparatus includes a first lens component having a first surface and a second surface. The first apparatus further includes a second lens component that comprises a flexible element. The first apparatus also includes a fluid that may be applied between at least a portion of the first lens component and at least a portion of the second lens component. The flexible element of the second lens component is such that it conforms to the first surface of the first lens component when an amount of fluid between the first surface of the first lens component and the second lens component is sufficiently low. The flexible element of the second lens component is also such that it does not conform to the first surface of the first lens component when an amount of fluid between the first surface of the first lens component and the second lens component is sufficiently great.

Abstract: An adaptive lens system comprises i) a lens compartment with a transparent cover; ii) a deformable transparent optical element mounted in the lens compartment which forms a sealed upper chamber in the lens compartment between the transparent cover and the upper surface of the optical element, and also defining a lower region external to the lower surface of the optical element; iii) a first transparent fluid medium in the upper chamber and a second transparent fluid medium in the lower region, the first and second fluid media having different refractive indices; iv) a structural element located in and movable in the upper chamber relative to the deformable optical element to mechanically engage the deformable optical element to thereby alter the curvature of the deformable optical element, thereby altering the refractive power or the prismatic effect of the adaptive lens system.

Abstract: The present disclosure provides a sealing device for use in variable focus lenses that includes a guide member having at least one internal cavity and a passageway intersecting the internal cavity. A pinch member is slidably engaged within the internal cavity of the guide member and a portion of the pinch member slides across the passageway and into a portion of the internal cavity to deform and seal a fluid tube extending through the passageway. A set of adjustable eyeglasses employing the sealing device is also provided.

Abstract: A method of forming a support member to a flexible membrane is provided by the present disclosure. In one form, the method includes placing the flexible membrane onto an outer periphery of a fixed tool, translating a movable tool towards the fixed tool, and engaging the flexible membrane such that the flexible membrane is deformed and placed into tension. A molten resin is then injected into a support ring molding cavity, and the resin is allowed to cool such that the support ring is secured to the tensioned flexible membrane. The movable tool is then translated away from the fixed tool to eject a flexible membrane and support ring assembly.

Abstract: Adjustable focus eyeglasses where the range of adjustment can be moved. That is, if a pair of adjustable focus eyeglasses have a range of 0 diopters to 2.75 diopters (to provide a 2.75D ADD for reading for an emmetrope), this invention could, for example, permit the user to move the range from 0D to 2.75D to 2.00D to 4.75D so as to accommodate a short term change in the user's distance vision requirement. Each eye can be adjusted independently.

Abstract: An optical and mechanical design of a sealed, non-round fluid-filled lens capable of providing variation of optical power. The fluid lens includes at least three optical components: at least one mostly rigid optical disc, at least one mostly flexible optical membrane and a layer of a transparent fluid that is in communication via a fluid channel with a reservoir of excess fluid contained in a reservoir that can be accessed to augment the fluid volume inside the fluid lens to change the power of the fluid lens. The fluid lens is capable of providing correction of spherical and astigmatic errors, and utilizes contoured membranes to provide for a substantially constant desired spherical power over a substantially full field of view of a user.

Abstract: An actuator for a fluid-filled lens including a housing having a first and second end; a reservoir disposed within the housing is disclosed. In an embodiment, the actuator further includes a compression arm having a first end that is fixed at a pivot and a second end that is not fixed such that the compression arm flexes to compress the reservoir.

Abstract: Adjustable focus eyeglasses where the range of adjustment can be moved. That is, if a pair of adjustable focus eyeglasses have a range of 0 diopters to 2.75 diopters (to provide a 2.75 D ADD for reading for an emmetrope), this invention could, for example, permit the user to move the range from 0 D to 2.75 D to 2.00 D to 4.75 D so as to accommodate a short term change in the user's distance vision requirement. Each eye can be adjusted independently.

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 torus convex toward the optical axis. Embodiments may also include a lens of suitable size and shape for inclusion in a contact lens.

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 a conical frustum and at least a portion of the conical frustum concave in relation to the optical axis. An application of an electrical current to the meniscus wall provides for a increase in negative power in an optical quality provided by the liquid meniscus lens. Embodiments may also include a lens of suitable size and shape for inclusion in a contact lens.

Abstract: A non-round fluid lens assembly includes a non-round rigid lens and a flexible membrane attached to the non-round rigid lens, such that a cavity is formed between the non-round rigid lens and the flexible membrane. A reservoir in fluid communication with the cavity allows a fluid to be transferred into and out of the cavity so as to change the optical power of the fluid lens assembly. In an embodiment, a front surface of the non-round rigid lens is aspheric. Additionally or alternatively, a thickness of the flexible membrane may be contoured so that it changes shape in a spheric manner when fluid is transferred between the cavity and the reservoir.

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 a conical frustum. Embodiments may also include a lens of suitable size and shape for inclusion in a contact lens.

Abstract: Adjustable focus eyeglasses where the range of adjustment can be moved. That is, if a pair of adjustable focus eyeglasses have a range of 0 diopters to 2.75 diopters (to provide a 2.75 D ADD for reading for an emmetrope), this invention could, for example, permit the user to move the range from 0 D to 2.75 D to 2.00 D to 4.75 D so as to accommodate a short term change in the user's distance vision requirement. Each eye can be adjusted independently.

Abstract: An actuator for a fluid-filled lens including a housing having a first and a second end; a reservoir disposed within the housing. In an embodiment, a slider is slidingly disposed within the housing and disposed adjacent to the reservoir. In an embodiment, the actuator further includes a compression arm having a first end that is fixed and a second end that is not fixed, wherein the compression arm is disposed adjacent to the reservoir. Sliding the slider from one end of the housing to the other causes the slider to push the second end of the compression arm so as to compress the reservoir. In an embodiment, the slider includes a first end having a wedge shape configured to compress the reservoir. Sliding of the slider from one end of the housing to the other causes the first end of the slider to compress the reservoir.

Abstract: Adjustable focus eyeglasses where the range of adjustment can be moved. That is, if a pair of adjustable focus eyeglasses have a range of 0 diopters to 2.75 diopters (to provide a 2.75 D ADD for reading for an emmetrope), this invention could, for example, permit the user to move the range from 0 D to 2.75 D to 2.00 D to 4.75 D so as to accommodate a short term change in the user's distance vision requirement. Each eye can be adjusted independently.

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 a conical frustum combined with a segment of a torus convex to the optical axis. Embodiments may also include a lens of suitable size and shape for inclusion in a contact lens.

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 a conical frustum, additional embodiments may include a cylindrical wall, each with microchannels. Embodiments may also include a lens of suitable size and shape for inclusion in a contact lens.

Abstract: A lens in accordance with the present invention includes an switchable cell consisting of optical substrate with diffraction surface, elastic film in contact with the diffraction surface of the substrate, optical fluid that fills the space between the film and diffraction surface and the mean to transfer the optical fluid in and out of the space between the film and diffraction surface. The refractive index of the optical fluid matches the refractive index of the optical substrate. The switchable cell changes focus positions between refractive focus in relaxed state when the pressure at both sides of the film is the same and diffraction focus when the optical fluid is transported from the space between the film and optical substrate for the film to largely conform to the diffraction surface shape of the optical substrate.

Abstract: Optical apparatus comprises at least one variable power lens 1 formed by a fluid-filled cavity 2 defined between two transparent walls 3, 4, at least one of which is provided by a flexible membrane 4. The apparatus further comprises a first pump 10 in fluid communication with the cavity 2 for varying the volume of fluid in the cavity 2 in order to change the optical power of the lens 1. A second pump 20 is provided in fluid communication with the cavity 2 for varying the volume of fluid in the cavity 2 in order to change the optical power of the lens 1. The second pump 20 is in fluid communication with the cavity 2 via a detachable connection 7, so that the second pump 20 can be removed from the apparatus after adjustment of the optical power of the lens 1.

Abstract: The present invention relates generally to an arcuate liquid meniscus lens, some specific embodiments include a liquid meniscus lens with a front curve arcuate lens and a back curve arcuate lens. Embodiments may also include a lens of suitable size and shape for inclusion in a contact lens.

Abstract: Adjustable focus eyeglasses where the range of adjustment can be moved. That is, if a pair of adjustable focus eyeglasses have a range of 0 diopters to 2.75 diopters (to provide a 2.75 D ADD for reading for an emmetrope), this invention could, for example, permit the user to move the range from OD to 2.75 D to 2.00 D to 4.75 D so as to accommodate a short term change in the user's distance vision requirement. Each eye can be adjusted independently.

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 a conical frustum, a cross section of which is non-spherical. Embodiments may also include a lens of suitable size and shape for inclusion in a contact lens.

Abstract: The present invention relates generally to a liquid meniscus lens with a meniscus wall. Some specific embodiments include a liquid meniscus lens with a meniscus wall essentially in the shape of a conical frustum with at least a portion of the conical frustum convex toward the optical axis. Embodiments may also include a lens of suitable size and shape for inclusion in a contact lens.

Abstract: The present invention relates generally to a liquid meniscus lens with a meniscus wall. Some specific embodiments include a liquid meniscus lens with a meniscus wall essentially in the shape of a conical frustum with at least a portion of the conical frustum concave toward the optical axis. Embodiments may also include a lens of suitable size and shape for inclusion in a contact lens.

Abstract: A lens blank for a fluid lens includes a rigid lens and a semi-flexible inflatable membrane attached to the rigid lens. The lens blank is divided into a cavity zone and a bonded zone. The cavity zone extends radially outward from a central area of the lens blank and a cavity is formed between the membrane and the rigid lens within the cavity zone. The bonded zone extends radially outward from the cavity zone and the membrane is bonded and fluidly sealed to the rigid lens throughout the bonded zone. The bonded zone is dimensioned to be trimmed to accommodate a plurality of frame shapes and sizes. Methods of manufacturing lens blanks are also provided. Arrays of lens blanks and fluid lenses are also provided.

Abstract: A variable focus optical apparatus including a rigid, curved, transparent optical component; two transparent, distensible membranes attached to a periphery of the rigid optical component to define two cavities, a first cavity between the rigid optical component and a first membrane and a second cavity between the first membrane and a second membrane; and a variable amount of fluid filling each of the cavities, and a reservoir Containing additional fluid and in fluid communication with the cavity, wherein the reservoir is configured to provide injection of fluid into the cavity or withdrawal of fluid out of the cavity in response to a force or an impulse.

Abstract: Disclosed are apparatuses and manufacturing methods for a fluid filled lens reservoir system. The eyeglass reservoir system includes a temple piece having a cavity, a bladder positioned within the cavity and configured to repeatedly compress and relax, the bladder being made of a flexible material, and a connecting tube coupled to an inlet port of a lens module and to the bladder, configured to carry a fluid between the bladder and a fluid filled lens cavity of the lens module. The eyeglass reservoir system further comprises a compression arm contacting the bladder and configured to transmit force from an actuator to the bladder to cause movement of the fluid between the bladder and the connecting tube. The bladder and connecting tube are made of a flexible material such as polyvinyledende difluoride. The connecting tube further comprises a flared end configured to couple to the inlet port of the lens module.

Abstract: Various embodiments of a non-powered actuator arm for controlling liquid flow to a fluid-filled lens are described herein. A vertical tweezer assembly compresses a reservoir of solution in a first vertical direction by lateral disposition of a slider mounted on the outside of the housing. The assembly may also be shaped to provide compression of the reservoir in a second horizontal direction by lateral disposition of a slider. In another embodiment, a housing may contain a piston that moves laterally within the housing and collapses the reservoir disposed adjacent to the piston and also within the housing. The housing may contain a plurality of compressible domes which can each be compressed to cause a local compression on the reservoir disposed within the housing. Compression of the reservoir causes liquid inflation of a lens module.

Abstract: The present invention relates generally to a high-efficiency Electrowetting saline solution formulation. Specific embodiments include high-efficiency Electrowetting saline formulations that maximize the electrical performance of an arcuate liquid meniscus lens incorporated in an ophthalmic lens and operated using direct current.

Abstract: An embodiment of a piezoelectric actuator system for a fluid-filled lens is described herein. A piezoelectric reservoir is provided encompassing a fluid. In an embodiment, the reservoir is disposed around the perimeter of a lens module within a housing. In an embodiment, electrodes are woven into the reservoir and connected to a power source. An applied potential causes the reservoir to flex with a magnitude and direction related to the amplitude and polarity respectively of the potential. In an embodiment, flexing of the reservoir causes fluid to either inflate or deflate the fluid-filled lens module.