933 results about "Contact lens" patented technology

A contact lens assembly includes a cup, a dry contact lens that is not for being worn on an eye, a sealing layer removably connected to the cup, and a wetting liquid supply. The sealing layer and the cup jointly form an enclosed space that receives the dry contact lens therein and that does not accommodate any liquid. After at least one of the sealing layer and the cup produces an opening, the cup can receive a wetting liquid from the wetting liquid supply through the opening, such that the dry contact lens is immersed in the wetting liquid to form a wet contact lens that is suitable for being worn on the eye and that has a water content greater than a water content of the dry contact lens.

There is described a contact lens package containing a bowl for holding a contact lens and a flange around the bowl which may be made from a different polymer material than the bowl. The packages comprise at least one interface tab with at least one slot so that the second polymer material forming the flange can encapsulate the tab providing a mechanical interlock displaying good flexural strength.

Provided herein are several embodiments of a dexterity tool for opening a contact lens package to remove a contact lens inside. Some embodiments may have a housing which clamps down on the contact lens package to aid in the removal of the lid from the contact lens package. Some embodiments may also have a top clamshell housing with a movable jaw connected to the top clamshell housing and an opening in the top clamshell housing. Some embodiments may also include a bottom clamshell housing hingedly attached to the top clamshell housing so that the top housing hinges about a hinge axis relative to the bottom housing and further contains a bowl positioned within the bottom clamshell housing and a platform surrounding the bowl. A fixed jaw may be connected to the platform such that when the tool is placed in a closed position the contact lens package is sandwiched in between the movable jaw and the fixed jaw.

The invention provides a high-precision dot matrix density cosmetic contact lens development method and system, a medium and a product, and relates to the technical field of cosmetic contact lens production, and the method comprises the steps: obtaining multi-mode fashion data through a crawler technology, and extracting a trend language intention vector from the multi-mode fashion data; based on a pre-trained neural network model, mapping the trend language intention vector into a microscopic physical parameter for defining a cosmetic contact lens pattern to obtain an initial dot matrix parameter set; performing graphical rendering on the initial dot matrix parameter set to obtain a plurality of initial cosmetic pupil dot matrix patterns; simulating the wearing effect of each initial cosmetic contact lens dot matrix pattern on the three-dimensional human eye model through simulation software to obtain a plurality of virtual wearing effect pictures; and determining the initial cosmetic contact lens dot matrix pattern of which the aesthetic evaluation score is greater than a preset score threshold as a final cosmetic contact lens dot matrix pattern. By implementing the method, the limitation of a traditional design element library can be broken, the generation of the cosmetic contact lens pattern is more innovative and diversified, and the innovativeness and the popular integrating degree of the cosmetic contact lens pattern are improved.

The present invention relates to improved contact lens packages and lens supports for use therein. A contact lens package may have a lid, a base having a cavity that houses a contact lens and packaging solution and a lever. A lens support configured lift the contact lens out of the packaging solution in a position on the lens support capable of single-touch transfer by a user. The package may include a locking mechanism configured to lock the lever in place when the lens support is lifted to a predetermined lift angle.

Described are toric contact lenses that contain high energy visible (HEV) light absorbing compounds and their use for improving various vision attributes in astigmatic contact lens wearers, such as brightness perception and visual range.

The present invention discloses a fully wireless ocular surface pressure monitoring system based on a multi-frequency phase-shift decoupling self-calibration algorithm, relating to the technical field of intelligent ophthalmic detection. The system comprises a wearable three-layer contact lens, wherein the outer layer is embedded with a capacitive eyelid pressure sensor and a first spiral coil, and the inner layer is embedded with a piezoresistive intraocular pressure sensor and a second spiral coil, which are respectively tuned to different center frequencies to modulate pressure changes into radio frequency signals. Externally powered receiving glasses or eye masks comprise a multi-frequency transmitting coil, a rectifier circuit and a receiving coil, which supply energy to the sensing structure in the contact lens and sense and obtain a composite signal formed by spatial superposition, which is transmitted to a processing circuit and then sent to a mobile computing terminal. The terminal performs multi-frequency decoupling, sparse matrix separation and temporal self-calibration processing to generate calibration curves of eyelid pressure and intraocular pressure, thereby realizing real-time perception of dual parameters in the eyes-closed state. The system has the advantages of compact structure, high signal separation accuracy and high degree of wirelessness.

The utility model relates to the technical field of contact lens automatic production, in particular to contact lens filling and mold closing equipment which comprises a turnover unit used for turnover of jig assemblies, and the turnover unit is divided into a feeding area, at least one filling and liquid injection area and a discharging area according to functional areas; a mold opening and closing unit and a liquid injection unit are arranged on the side part of the filling and liquid injection area; a feeding unit for providing a to-be-filled mold is arranged on the side portion of the feeding area, a discharging unit for collecting the filled mold is arranged on the side portion of the discharging area, and a visual inspection unit is further arranged above the discharging area. According to the utility model, mold opening, filling and mold closing actions are integrated, the whole structure is compact, the function integration degree is high, multiple filling liquid injection areas are synchronously injected and filled in batches, the whole operation period of the mold is shortened, and the liquid injection and filling efficiency is improved; the automatic feeding and discharging unit is matched, the risk of manual operation is reduced, and the overall production and processing quality of the contact lenses is improved.

Methods for product recommendation are provided. This includes collecting personal user data including profession, gender, size, preferences, user's apparel size, user's address, who the user's friend are, user's friends' information, users' medical records including eyeglass and contact lens prescription information; collecting vendor data including product size, product description, product location, price; and recommending vendor products that best match the users' personal data.

The invention discloses a contact lens defocusing amount optimization method and system, electronic equipment and a medium, and relates to the technical field of data processing. The method comprises the following steps: acquiring reference eye optical data of a tested eye through a wavefront aberration instrument, wherein the reference eye optical data comprises the eye axis length, the corneal curvature radius and the reference value of the lens equivalent refractive power; establishing a correlation model of the eye axis length and the corneal curvature and a correlation model of the eye axis length and the lens equivalent refractive power, and determining a change threshold value of the eye axis length. Acquiring an eye axis length acquisition value through an ultrasonic measuring instrument, and calculating the variable quantity of the eye axis length acquisition value and a reference value; and when the variable quantity exceeds a threshold value, substituting the variable quantity into the correlation model to calculate the estimated values of the curvature radius of the cornea surface and the equivalent refractive power of the crystalline lens, and constructing an optical state parameter set of the eye. And finally, based on the parameter set, calculating defocusing amount values of the contact lens at a plurality of radial positions through a ray tracing algorithm. By implementing the technical scheme provided by the invention, the defocusing amount accuracy of the contact lens can be improved.

A method for automatically determining multifocal lens parameters associated with a contact lens and a contact lens for correcting ametropia of a patient's eye wherein a personalized multifocal contact lens for treating presbyopia takes into account various related clinical patient measurements including patient clinical data and lifestyle data, to determine which lens is likely to provide personalized lens parameters for new patients. Historical patient clinical data and lifestyle data are used to train the system to predict which multi-focal lenses (i.e., lenses including lens designs and having lens geometries and powers) would result in optimal lens-to-eye fit and optimal visual function for each eye of presbyopia patients.

The utility model relates to the technical field of automatic production of contact lenses, in particular to liquid injection and mold closing equipment for light diffusion sheets of contact lenses, which comprises a temporary storage dust removal mechanism for temporarily storing an upper mold, a rotary pickup mechanism for carrying and rotating the upper mold, and a mold closing module for driving the rotary pickup mechanism to move, during rotary mold closing, an upper mold is carried to the temporary storage dust removal mechanism, the temporary storage dust removal mechanism carries out dust removal on the upper mold and then temporarily stores and places the upper mold, the mold closing module drives the rotary picking mechanism to reach the temporary storage dust removal mechanism to obtain the upper mold, the rotary picking mechanism rotates the upper mold to a specified angle, and the mold closing module drives the rotary picking mechanism to place the upper mold on the lower mold. Mold closing is completed; according to the utility model, the overall structure is compact, the functions of temporary storage, dust removal, rotary alignment and placement and die assembly are integrated, and the rapid rotary alignment of the contact lens astigmatism sheet can be completed without redundant turnover and complex actions, so that the processing automation of the astigmatism sheet is improved, and the production and processing efficiency of the contact lens is improved.

The invention belongs to the technical field of control systems, and particularly relates to a control system based on combination of dynamic focal length adjustment and vision correction, which comprises a bearing plate and a parameter configuration and feedback module, the two sides of the top of the bearing plate are rotationally connected with lens groups, and the parameter configuration and feedback module is used for collecting user information and initial matching training core parameters and sending the initial matching training core parameters; continuously receiving multi-dimensional real-time feedback, and iteratively optimizing parameters based on the feedback; the dynamic training content generation module is used for generating dynamic 2D and 3D contents and interactive games of adaptive set and adjustment training according to the training parameters optimized by the parameter configuration and feedback module; on the basis, through an adjusting and training mechanism combining hardware and software, personalized adaptation to vision requirements of different users is achieved, medical risks and high cost of laser surgery are avoided, and the problems that traditional glasses and contact lenses are limited in adaptability and inconvenient to use in daily life are solved.

This invention comprises a combined optical wavefront aberrometer and topographer system that is used in conjunction with a contact lens that has a plurality of fiducial marks disposed on the lens. The fiducial marks are located radially inside of the undilated pupil's diameter. The optical imaging capacity of the aberrometer is used to measure and monitor any misalignments of the contact lens's position (XY decentration) and / or rotation. Image analysis algorithms are used to track the positions of the fiducial marks, and, hence, the amount of geometric misalignment of the contact lens can be calculated. The fiducial marks can comprise micro ink spots, or depressions in the surface of the contact lens (e.g., divots, dimples, pits), or other small surface features, including raised bumps, which can help to stabilize motions of the contact lens on the eye.

The invention relates to the technical field of machine vision, in particular to a contact lens printing pattern defect detection method and system based on a multi-scale fusion feature, and aims at each new pattern, only dozens of frames of qualified product images need to be input for training, and the detection efficiency is improved. And the limitation of the current method when the current method is adaptive to various patterns and weak flaws are detected can be made up. The semi-supervised deep learning method can break through the dependence of traditional deep learning on large-scale labeled data, utilizes a semi-supervised learning strategy to mine potential information in unlabeled data, improves the recognition capability of a model on complex and sparse defects, and meanwhile, aims at the characteristics of a color mold transfer printing pattern, and improves the recognition efficiency of the color mold transfer printing pattern. A targeted deep learning network structure and a loss function are designed, and the sensitivity and generalization ability of the model to specific defect types are ensured.

The invention relates to an up-conversion infrared photon contact lens as well as a preparation method and application thereof, and belongs to an infrared visual material. Wrapping the surface of the solid nanometer microsphere with the up-conversion nanometer particles to form an up-conversion luminescence core-shell structure microsphere; dispersing the up-conversion core-shell structure microspheres in an acrylate solution to prepare an up-conversion luminescent layer (UCL); dispersing polymer microspheres in an acrylate solution to prepare an up-conversion light reflecting layer (GRL); dispersing the solid nano-microspheres in an acrylate solution to prepare an infrared reflection layer (IRL); dispersing the hollow nano-microspheres in an acrylate solution to prepare a surface antireflection layer (ARL); and further obtaining the up-conversion infrared photon contact lens. The contact lens prepared by the invention has excellent up-conversion luminescence performance and a good wearing function, and can realize efficient utilization of infrared photons so as to realize visualization of infrared light.

The invention relates to the technical field of production line data management, in particular to a data acquisition system based on a contact lens production line, and aims to solve the problems of equipment information island, insufficient data real-time performance, poor storage reliability and the like of a traditional data acquisition mode. Through multi-source heterogeneous data standardized access, edge computing real-time processing and distributed database technologies, the collection efficiency and integrity of key data such as process parameters, equipment states and carrier plate circulation information are remarkably improved. Through an industrial-grade hot standby redundancy transmission channel and a persistent storage mechanism, the risk of data loss caused by network fluctuation or equipment failure in the prior art is solved, high-reliability storage of high-frequency dynamic parameters such as transfer printing positioning precision, filling pressure and mold closing temperature is ensured, and a stable data basis is provided for production tracing and process optimization. Meanwhile, a load balancing module is provided to ensure load balancing of server nodes receiving data, and a stable and reliable working environment of subsequent links is ensured.

Provided herein are a soft contact lens for correcting an ocular refractive error of an eye, the soft contact lens comprising a vaulted portion and a specialty feature.

The utility model discloses a coining press for contact lens production, and relates to the technical field of contact lenses. The device comprises a workbench, the top of the workbench is fixedly connected with a vertical plate, the top of the vertical plate is fixedly connected with a plurality of hydraulic telescopic rods at equal intervals, the output ends of the hydraulic telescopic rods penetrate through the vertical plate and are fixedly connected with an upper die, and the top of the workbench is in lap joint with a placing base. And a plurality of lower molds are fixedly connected to the top of the containing base at equal intervals, fixing mechanisms are symmetrically arranged on the top of the workbench, a handle is rotated to drive a clamping block to clamp and fix the containing base, and the risk that the containing base shifts during working is reduced.

Systems and methods are disclosed to enable detection of excessive contact lens shift in a head-mounted display (HMD) device that implement gaze tracking for the user. In embodiments, during a user enrollment process to calibrate the gaze tracking system, the HMD device analyzes key frames of the eye to estimate a first center location of the eye based on detected eye features such as the pupil, the iris, or the limbus, and a second center location of the eye based on the shape of the detected cornea. Shift vectors are generated based on the two center locations for individual key frames. If the standard deviation of the vectors' magnitudes exceeds a specified threshold, excessive lens shift is detected. In response to detection of excessive contact lens shift, the HMD device may generate a notification to the user or activate compensation mechanisms.

The group of inventions relates to optical elements with integrated electronic components and specifically to contact lenses with a built-in ultrathin digital camera, which are applicable for capturing video images, object recognition, implementing the user eye-tracking function, including, without limitation, while forming virtual, augmented, mixed or extended reality (VR / AR / MR / XR), as well as for diagnosing and compensating ophthalmic diseases, and for other applications. The contact lens housing (1) made of an optically transparent material contains a built-in electronic component containing a power source (2) and a camera (3) with at least one receiver (4) in the form of a matrix (8) of photosensitive elements. The camera (3) is equipped with an optical system implemented as at least one coding mask (5) separated from the receiver (4) by an intermediate layer (9) of homogeneous optically transparent material and disposed on the surface of or inside the lens housing (1). The invention makes it possible to significantly reduce the thickness of the contact lens containing an integrated camera and to produce an operational device that is comfortable for daily wearing.

A method of determining an angle of repose of a contact lens on an eye of a user of the contact lens, the method comprising, at a computing device 100: obtaining data indicative of a refractive error

A contact lens 10 with a lens body 12, wherein the lens body 12 comprises an optic zone 14, a peripheral zone 18 circumscribing the optic zone 14, a ramp zone 23 circumscribing the peripheral zone 18

The intelligent ultrasonic cleaner comprises an outer machine body and an inner machine body, a first liquid storage cavity and a second liquid storage cavity are formed in the outer machine body, a mounting groove is formed between the first liquid storage cavity and the second liquid storage cavity, and the inner machine body is fixedly clamped in the mounting groove; two groups of ultrasonic vibrators are mounted at the bottom of the inner machine body corresponding to the cleaning tank; two sets of cleaning tanks are arranged in the inner machine body, liquid outlet holes are formed in the top sides of the cleaning tanks, and liquid drainage holes are formed in the bottom ends of the cleaning tanks. And a liquid extraction pump and a liquid discharge pump are mounted in the outer machine body. By integrating the infusion pump, the drainage pump, the separated liquid storage cavity and the liquid inlet and drainage channel, full-automatic circulation of liquid injection, cleaning and liquid drainage in the contact lens cleaning process is achieved. A user only needs to put the lens into the cleaning tank and start a program, the equipment can automatically finish precise injection of the cleaning liquid and thorough discharge of the waste liquid, the operation process is greatly simplified, and the operation burden and time cost of the user are remarkably reduced.

A contact lens mold half injection molding machine (60) comprises a plurality of tool cavities (54a, 54b), each tool cavity defining a space into which molten polymer can be injected so as to form a c

The present invention provides a contact lens ink preparation method, and relates to the technical field of contact lenses, the contact lens ink preparation method comprises: S1, carrying out a stirring mixing reaction on raw materials for preparing resin under the protection of a protective atmosphere to prepare resin; s2, stirring, mixing and reacting the resin obtained in the step S1 and other raw materials for preparing the contact lens ink to obtain the contact lens ink; the step S1 is divided into a plurality of preparation periods, and the protective atmosphere is introduced according to the corresponding protective atmosphere introduction parameters in each preparation period. In the step S1, the process of preparing the resin is divided into a plurality of preparation periods, and a protective atmosphere (preferably nitrogen) with corresponding parameters is introduced in each preparation period, so that a stable inert environment can be created for a reaction system, the interference of external factors is effectively avoided, the preparation stability of an intermediate (an ink matrix, specifically the resin) is guaranteed, and the preparation quality is improved.

This invention discloses an iontophoresis gel scleral contact lens and its preparation method, comprising a contact lens frame, a polymer porous microsphere drug-carrying layer loaded with nano-sustained-release drugs, an electrode layer, and a flexible material covering the electrode layer on the contact lens frame, and a gel layer covering the outer side of the contact lens frame. This iontophoresis gel scleral contact lens has a simple structure, facilitates convenient and rapid drug delivery, and provides sustained-release efficacy. It allows patients to self-administer the drug, directly delivering it to the intraocular lesion site, avoiding adverse reactions in other tissues or the whole body, and has a sustained-release function to reduce the frequency of drug administration.

A method for producing embedded hydrogel contact lenses comprises at least the following steps: obtaining an insert made of a crosslinked polymeric material comprising iniferter moieties covalently attached thereto; placing the insert in a female lens mold half; dosing an amount of a lens-forming composition to immerse the insert in the female lens mold half; closing tightly a male lens mold half onto the top of the female lens mold half halves to form a molding assembly; curing the lens-forming composition in the molding assembly to form an embedded hydrogel lens precursor which comprises a bulk hydrogel material formed the lens-forming composition and the insert that is embedded therein and covalently linked to the bulk hydrogel material.

The present invention relates to an improved contact lens package. The contact lens package (100) includes a cavity (122) containing a contact lens (160), a packing solution (170), and an absorbent member (180). The absorbent member is configured to transition between an expanded state and a compressed state, and the absorbent member is in the compressed state when the package is in an unopened state.