1254 results about "Contact lens" patented technology

This article is a contact lens with patterns and colors applied.

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.

A contact lens assembly 100 is disclosed. The contact lens assembly 100 comprises a second lens member 104 located between first and third lens members 102, 106. A structured anterior surface region 110 of the first lens member 102 that defines a diffractive optical element and a posterior surface region 115A of the second lens member 104 together define a first cavity. A structured posterior surface region 112 of the third lens member 106 that defines a diffractive optical element and an anterior surface region 113A of the second lens member 104 together define a second cavity. The posterior and anterior surface regions 115A, 113A of the second lens member 104 do not include a diffractive optical element.

A wireless passive resonance sensor and contact lens for intraocular pressure monitoring comprises a contact lens body which is used for packaging a sensor assembly and serves as a substrate of the sensor. The first spiral inductor is arranged in the contact lens body; the middle elastic dielectric layer covers the first spiral inductor and is used for forming a deformable dielectric medium; the second spiral inductor is arranged on the middle-layer elastic dielectric layer, is opposite to the first spiral inductor and forms an inductor assembly with the first spiral inductor; wherein the first spiral inductor, the middle elastic dielectric layer and the second spiral inductor jointly form a capacitor and equivalently form a serial L-C-L resonant circuit, and the change of intraocular pressure is responded through the change of resonant frequency of the resonant circuit, so that passive wireless monitoring is realized. The design optimizes the preparation process, reduces the cost, improves the signal stability, is suitable for 24-hour continuous monitoring, and provides a powerful tool for early diagnosis and intervention of glaucoma.

The invention provides a contact lens with peripheral defocus, and relates to the technical field of optical lenses, the lens comprises a contact optimization core area, a partitioned progressive microprism array area and a dynamic light scattering area, and the specific setting is as follows: the contact optimization core area is located at the geometric center of the lens, the outward extension radius is 1.8-2.2 mm, and the contact optimization core area provides clear central vision; according to the intelligent self-adaptive contact lens, the intelligent self-adaptive contact lens is characterized in that the intelligent self-adaptive contact lens comprises a contact optimization core area and a partition progressive microprism array area, the partition progressive microprism array area is located on the outer side of the contact optimization core area and surrounds the contact optimization core area in a concentric ring shape, and through collaborative design of the partition progressive microprism array area and the dynamic light scattering area, the real-time monitoring and dynamic adjusting capacity of a photoelectric feedback control module is combined; the problem that an optical structure of an existing product lacks dynamic adaptability is effectively solved, and the optical structure can be changed according to different illumination environments and wearing duration.

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.

The utility model discloses a contact lens pattern transfer printing device which comprises a machine base, a dye supply mechanism and a transfer printing mechanism, a conveying mechanism is installed at the top of the machine base, a plurality of placing stations are evenly installed on the conveying mechanism and used for placing molds, a transverse driving mechanism is horizontally and fixedly arranged above the machine base through at least two sets of vertical arms, and the transverse driving mechanism is used for driving the machine base to rotate. A longitudinal driving mechanism is vertically installed at the output end of the transverse driving mechanism, the dye supply mechanism is installed at the output end of the longitudinal driving mechanism, a transfer printing mechanism is installed on the lower portion of the dye supply mechanism, the transfer printing mechanism is provided with a plurality of transfer printing rubber heads, and every two transfer printing rubber heads form a group. Pattern transfer printing between the printing flat plate and the transfer printing rubber head and between the transfer printing rubber head and the mold can be completed at the same time, the transfer printing path is shortened, the contact lens pattern transfer printing waiting time is shortened, and the contact lens pattern transfer printing efficiency is improved.

A WS12-releasing contact lens is described as well as method of manufacturing the same. The WS12-releasing contact lens comprises a polymeric lens body and WS12 releasably adhered to the polymeric lens body, and releases from 0.05 μg to 0.5 μg WS12 after 1 hour in a release media or when worn by a human subject. The WS12-releasing contact lens can be comfortably worn by a symptomatic contact lens wearer and can increase the duration of comfortable lens wearing time and / or reduce lens awareness events and / or reduce contact lens dryness in a symptomatic contact lens wearer.

The invention relates to the technical field of machine vision, in particular to a machine vision-based contact lens packaging box sealing detection system, which comprises the following steps of: preprocessing a collected packaging box sealing image by using a preprocessing module to obtain a preprocessed image; extracting a sealing area and a sealing area center of the preprocessed image through a positioning module; then, a flaw detection module is used for conducting flaw detection on the sealing area based on a flaw detection model built in advance, and a detection result is obtained; and finally, extracting candidate flaw features in the detection result through a flaw analysis module, and analyzing the candidate flaw features based on the center of the sealing area and pre-configured flaw screening parameters to obtain flaw features in the sealing area. Based on the image acquisition, processing and analysis technology, automatic detection of packaging box sealing is achieved, compared with a traditional manual detection method, the method has the advantages of being high in accuracy, high in efficiency, high in automation degree and the like, and the production efficiency and the product quality can be greatly improved.

A method of manufacturing a contact lens assembly is disclosed. The method comprises bonding an anterior surface of a first lens member to a posterior surface of a second lens member; and then machining an anterior surface of the second lens member and a posterior surface of the first lens member. Lens members are machined to produce datum surfaces on both sides of the member, the datum surfaces defining between them a reference thickness. A contact lens assembly, and contact lens members manufactured using said method are also disclosed.

The invention relates to the field of contact lens manufacturing, in particular to contact lens automatic filling mold closing equipment which comprises a positioning carrier plate, a mold splitting assembly, a liquid injection assembly and a mold closing assembly, and the mold splitting assembly, the liquid injection assembly and the mold closing assembly are arranged above the positioning carrier plate. The first transfer device can drive the positioning carrier plate to move right below the mold splitting assembly, the liquid injection assembly and the mold closing assembly; the die splitting assembly comprises a plurality of groups of stripping clamping jaws, and each group of stripping clamping jaws are symmetrically arranged and can be close to or far away from each other; the sides, close to each other, of the two stripping clamping jaws in each set extend oppositely to form wedge-shaped protrusions, and a first inclined face and a second inclined face are formed above and below the extending direction of the protrusions respectively. And during stripping, the bulge is inserted between the upper die and the lower die. Die splitting of the upper die and the lower die of the die is divided into two independent actions of stripping and separation, so that the situation that the upper die deviates or falls off at the moment of separation in one-time die splitting is avoided.

Aspects of the present disclosure relate to an integrated contact lens device for ophthalmoscopy and methods of use thereof. The integrated contact lens device includes a lens portion, an upper spreader portion, and a lower spreader portion. The integrated contact lens device helps to improve visualization of peripheral retinas, including upper and lower half retinas, via both manual examination and wide angle cameras that can be viewed with the contact lens. The integrated contact lens device further prevents or reduces corneal dryness and patient discomfort during examination.

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.

The invention discloses a microfluidic contact lens and a tear collection and analysis method, and belongs to the technical field of biomedical detection. The micro-fluidic contact lens comprises an outer layer and an inner layer, a micro-channel and a plurality of micro-cavities are arranged on the side, facing the inner layer, of the outer layer, inlets of the micro-cavities are sequentially connected to the side wall of the micro-channel, and the inlets of the micro-cavities form first capillary rupture valves through divergence angle design; a second capillary rupture valve is arranged on the micro-channel between every two adjacent micro-cavities, and a third capillary rupture valve is arranged on the micro-channel between each micro-cavity and the exhaust port of the micro-cavity; the inner layer is a smooth bent film; a paper microfluid sensor, a colorimetric sensor and a temperature-sensitive cholesteric liquid crystal (TSLC) sensor which are used for detecting tear indexes are arranged in the microcavity. The contact lens has good accuracy and stability in the aspects of measuring the secretion amount, the pH value and the temperature of tear, and particularly keeps relatively high reliability in comparison experiments under different illumination conditions.

A contact lens includes a composition of the contact lens. The composition of the contact lens includes a humectant. The humectant includes a glucan, and the glucan in the composition of the contact lens includes an 1-3 / 1-6-glucan. The contact lens product includes the contact lens and the buffer solution, and the contact lens is immersed in the buffer solution.

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 high-oxygen-permeability membrane material and a preparation method thereof, and belongs to the technical field of membrane materials. The membrane material is prepared by taking polydimethylsiloxane and polycaprolactone as organic raw materials, adding an inorganic material nano titanium dioxide or graphene, and carrying out solution preparation, cross-linking reaction, casting membrane formation, hot press molding, plasma treatment and surface modification. The polydimethylsiloxane guarantees the oxygen permeability, the polycaprolactone improves the flexibility and the biocompatibility, and the nano inorganic particles enhance the mechanical strength and the antibacterial property. The prepared membrane material is improved in oxygen permeability coefficient, greatly improved in tensile strength and elongation at break, good in hydrophilicity and biocompatibility, low in cytotoxicity and small in hemolysis rate, can be widely applied to medical products such as artificial lungs, wound dressings and contact lenses, and effectively meets the requirements of the medical field for the membrane material with high oxygen permeability and good comprehensive performance.

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.

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.

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 utility model relates to efficient contact lens polishing equipment which comprises a base, a motor is arranged on the right side in the base, a rotating disc is fixedly connected to the right side of an output shaft of the motor, an eccentric rod is fixedly connected to the right side of the rotating disc, and a first driving arm is movably connected to the outer portion of the eccentric rod. A rotating rod is fixedly connected to the left side of the first driving arm, a second driving arm is fixedly connected to the top of the rotating rod, and a third driving arm is hinged to the second driving arm. According to the efficient polishing equipment for the contact lenses, the rotating direction of the polishing block is the same as that of the contact lens body, the rotating speed of the polishing block is larger than that of the contact lens body, the rotating speed difference value of the polishing block and the contact lens body is the polishing speed of the contact lens body, and the polishing speed of the contact lens body is adjusted by adjusting the rotating speed of the second motor and the rotating speed of the third motor. And the polishing speed of the contact lens body can be accurately regulated and controlled.

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.