1630 results about "Contact lens" patented technology

The invention provides a self-adaptive eye movement tracking method and device. The method comprises the steps that a calibration target position matrix and a historical center position are initialized; obtaining state information of the contact lenses, a calibration eye image sequence and a calibration sensing position sequence by using the intelligent head-mounted equipment, the intelligent contact lenses and the calibration target position matrix; processing the calibration target position matrix, the historical center position, the contact lens state information, the calibration eye image sequence and the calibration sensing position sequence to obtain a prediction target matrix, a prediction pupil center position matrix, a post-processing mark and an updated historical center position and calibration target position matrix; the post-processing mark is judged, and the calibration target position matrix is updated; and extracting the calibration target position matrix to obtain M predicted fixation point positions. Therefore, according to the method provided by the invention, the eye movement tracking mode can be adaptively selected, the defect of a single tracking method is overcome, and the accuracy and smoothness of eye movement tracking are improved.

A contact lens package includes a lid and a container defining a cavity configured to house a contact lens and packaging solution, the lid being sealedly coupled to the container, and a lens support including a lever and a lens support disposed within the cavity. The lens support is pivotably coupled to the container such that the lever is configured to raise the lens support at least partially out of the cavity.

The invention relates to the technical field of cloud and machine vision, in particular to a high-precision multi-light-field contact lens flaw detection method and device based on cloud-machine vision, and the method comprises the steps: preprocessing a multi-light-field original image to obtain a point light source image, a bright field image, a dark field image and a preprocessed image; performing glass bowl detection on the preprocessed image, and extracting geometric features of the glass bowl; contour feature extraction is carried out on the printed contact lenses in the glass bowl area; carrying out obvious flaw detection; edge bubble flaw detection, edge flaw detection under a Cartesian coordinate system, edge flaw detection under a polar coordinate system and surface flaw detection based on multiple light fields are carried out. According to the method, various defects of the contour and the surface of the printed contact lens are detected, and the problem that an existing detection method is not high in detection precision and not high in universality is correspondingly solved. The method can be widely applied to an automatic contact lens detection system, the manual reinspection cost is reduced, the production efficiency is improved, and the product yield is improved.

The present invention relates to improved contact lens packages and methods of use and manufacture / assembly. A contact lens package includes a base and a lid connected to the base. The base includes a base cavity that houses a contact lens and packaging solution, and at least one projection (140) disposed at least partially within the base cavity. The at least one projection may extend along an internal surface of the base toward an end of the base cavity. The lid extends over and cover the base cavity when the package is in an unopened state. In another embodiment, at least a portion of the base cavity is formed by a bowl comprising a main portion (236) and a channel portion (238) extending away from the main portion.

The utility model provides a contact lens curing production line which comprises a circulating conveying line provided with an upper conveying track, a lower conveying track and a transfer device, and the transfer device is configured to transfer a mold conveyed by the upper conveying track to the lower conveying track or transfer a mold conveyed by the lower conveying track to the upper conveying track; the upper conveying track and the lower conveying track are provided with blocking air cylinders which are triggered by the detection piece to ascend or descend. A liftable curing plate is arranged in the curing box body; and a curing lamp panel matched with the mold is mounted on the curing plate. According to the contact lens curing production line, workpieces are conveyed into the curing box body through the upper conveying track for curing operation, then molds from which the workpieces are taken out are transferred to the lower conveying track through the transfer device and then transferred to the head end of the upper conveying track, and therefore circulating conveying of the molds is achieved, and the automation level of the curing production line is improved; and the production efficiency can be effectively improved.

The invention relates to the technical field of mother and baby products, in particular to a breast pump and a differential capacitance sensor assembly. The breast pump comprises a milk storage container used for storing milk and a differential capacitive sensor assembly used for detecting state parameters of the milk storage container. The milk storage container comprises a milk storage container shell, and the milk storage container shell comprises an inner side face making contact with milk and an outer side face not making contact with the milk. The differential capacitance sensor assembly comprises a detection electrode assembly, and the detection electrode assembly is arranged on the outer side face or close to the outer side of the outer side face. The state parameters of the milk storage container are detected through the differential capacitance sensor assembly, external interference is not likely to happen, the detection accuracy of the state parameters of the milk storage container can be guaranteed, non-contact measurement is conducted on the milk storage container, and it is guaranteed that milk is clean.

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 relates to the technical field of cloud and machine vision, in particular to a high-precision multi-light-field contact lens edge defect detection method and device based on a polar coordinate system, and the method comprises the steps: obtaining a multi-light-field original image of a printed contact lens soaked in water of a glass bowl, and carrying out the preprocessing of the multi-light-field original image, obtaining a bright field image, a dark field image and a preprocessed image; performing glass bowl detection on the pre-processed image, and extracting geometric features of the glass bowl when the glass bowl exists in the pre-processed image; contour feature extraction is performed on the printed contact lenses in the glass bowl area based on the geometric features of the glass bowl; and then performing rough detection and edge defect detection of a polar coordinate system based on the extracted images and features. The contact lens image acquired by the high-resolution camera is further utilized, the image is automatically identified, and whether the corresponding product is normal or not is judged, so that the purposes of reducing the labor cost, saving the time and improving the production yield are achieved.

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.

The present invention relates to a contact lens. The contact lens includes a lens body and a built-in module. The lens body includes an optical part and a ring-shaped wearing part surrounding the optical part. The built-in module includes a preform made of an eye-friendly material and a wiring structure embedded in the preform. The preform is completely embedded in the ring-shaped wearing part of the lens body, and the preform is ring-shaped and surrounds the outside of the optical part. The preform and the lens body are connected without any gaps to form a bonding interface, and are disposed at a distance from the rear surface and the front surface of the lens body, respectively. A local surface of the wiring structure is aligned with the surface of the preform and bonded to the ring-shaped wearing part. As a result, the wiring structure is embedded and positioned in advance in the preform, and the wiring structure can be completely embedded and positioned in the lens body.

The invention relates to the technical field of cloud and machine vision, in particular to a high-precision multi-light-field contact lens edge defect detection method and device based on cloud-machine vision, and the method comprises the steps: obtaining a multi-light-field original image of a printed contact lens soaked in water of a glass bowl, and carrying out the preprocessing of the multi-light-field original image, obtaining a bright field image, a dark field image and a preprocessed image; performing glass bowl detection on the preprocessed image, and extracting geometric features of the glass bowl; contour feature extraction is performed on the printed contact lenses in the glass bowl area based on the geometric features of the glass bowl; and then based on the extracted images and features, executing rough detection and edge defect detection under a Cartesian coordinate system and a polar coordinate system. The contact lens image acquired by the high-resolution camera is further utilized, the image is automatically identified, and whether the corresponding product is normal or not is judged, so that the purposes of reducing the labor cost, saving the time and improving the production yield are achieved.

The invention relates to the technical field of cloud and machine vision, in particular to an efficient multi-light-field contact lens flaw detection method and device based on cloud-machine vision, and the method comprises the steps: preprocessing a multi-light-field original image to obtain a point light source image, a bright field image, a dark field image and a preprocessed image; performing glass bowl detection on the preprocessed image, and extracting geometric features of the glass bowl; contour feature extraction is performed on the printed contact lenses in the glass bowl area based on the geometric features of the glass bowl; and carrying out multi-light-field-based surface flaw detection on the basis of the plurality of feature images of the printed contact lens. According to the method, the multi-light-field original image is preprocessed, so that various feature images are obtained, and flaw detection of edges and printing areas is carried out from multiple aspects. The contact lens image acquired by the high-resolution camera is further utilized, and the image is automatically identified, so that the purposes of reducing the labor cost, saving the time and improving the production yield are achieved.

The invention relates to a lens element (10), in particular for a spectacle lens, a contact lens or an intraocular lens, intended to be worn by a wearer, comprising:-at least a first zone (12) having a dioptric region having a front face and a rear face, the dioptric region having a refractive power based on a prescription of the wearer's eyes; -at least one microstructured second zone (13) outside said first zone (12) and configured for myopia or hyperopia control, said microstructured second zone (13) being characterized by a measurable surface spatial power spectral density PSDmeasure (f) such that, within a spatial frequency range between 0.3 mm-1 and 10 mm-1, formula (I), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula PSDnom is a nominal function defined by a Hann window, and f is spatial frequency. # imgabs0 #

The invention relates to the technical field of contact lens automatic production, in particular to a contact lens filling and mold closing method and system.The contact lens filling and mold closing method comprises the following specific steps that S10, a feeding unit mold is carried to a jig assembly; s20, the turnover unit drives the jig assembly to enter a filling liquid injection area; s30, the mold opening and closing unit opens the mold, the liquid injection unit is filled with injection liquid, and the mold opening and closing unit performs mold closing on the mold; s40, the turnover unit drives the jig assembly to enter a discharging area, and the visual inspection assembly conducts quality visual inspection; s50, the discharging unit carries the mold to an empty tray, and material receiving and discharging are conducted; s60, the turnover unit drives the jig assembly to enter a feeding area for feeding, and operation is cycled in this way; the mold opening, filling and mold closing actions are integrated, the overall structure is compact, the function integration degree is high, liquid injection and filling are synchronously conducted in multiple filling and liquid injection areas in batches, the overall operation period of the mold is shortened, and the liquid injection and filling efficiency is improved; the automatic feeding and discharging unit is matched, so that the manual operation risk is reduced, and the overall production and processing quality and processing efficiency of contact lenses are improved.

Formulations (e.g., solutions) comprising one or more water-soluble polymer(s), liposomes, and an aqueous carrier, are provided. The provided solutions are useful for rinsing, and / or immersing therein, a contact lens and / or in the treatment of ocular discomfort, for example, an ocular discomfort associated with a contact lens. Also provided are kits comprising the solution and a contact lens; articles-of-manufacturing comprising the solution and configured for dispending the solution; and methods utilizing the solution.

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.

A smart contact lens includes a lens body including a first lens surface in contact with an eye and a second lens surface positioned opposite the first lens surface, and an antenna disposed between the first lens surface and the second lens surface and configured to form a closed loop. The antenna may include an antenna ring forming a shape of a ring as a whole; and an antenna buffer bent and extended from the antenna ring in a diameter direction of the antenna ring.

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 invention provides a contact lens continuous online production method and a production system thereof, and belongs to the technical field of contact lens preparation. The problem of poor stability in the prior art is solved. The continuous online production method of the contact lenses comprises the following steps: A, adaptation preparation; b, module connection; and C, detecting and caching. The continuous online contact lens production system comprises a dry lens operation module, a wet lens operation module, a sterilization operation module and an outer packaging operation module, the output ends of the dry lens operation module, the wet lens operation module and the sterilization operation module are each provided with a transfer cache mechanism, and a material frame mechanism is arranged between every two adjacent modules. The transferring and caching mechanism can convey the semi-finished products from the previous module to the next adjacent module through the material frame mechanism according to the set conveying speed and conveying capacity. The production method is high in efficiency, and the system is compact in structure.

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 invention discloses a near-infrared contact lens for eye movement tracking and a preparation method, the contact lens comprises a contact lens layer, a processing circuit module, a wireless power supply coil, a near-infrared LED lamp and a photoelectric detector, the photoelectric detector is adjacent to the near-infrared LED lamp, the near-infrared LED lamp is used for emitting near-infrared light to the fundus, and the processing circuit module is used for processing the near-infrared light. The photoelectric detector is used for receiving near-infrared light reflected back from the fundus and detecting the movement direction and angle of the eyeball in real time by comparing irradiation values of the photoelectric detector, and the processing circuit module is connected with the photoelectric detector and used for comparing the difference of the irradiation values of the near-infrared light received by the photoelectric detector and determining the movement direction and angle of the eyeball. And the wireless power supply coil is directly connected with the processing circuit module and is used for wirelessly supplying power to the processing circuit module and the near-infrared LED lamp. According to the near-infrared contact lens, infrared waves generated by the near-infrared LED lamp avoid the visible range of human eyes, and meanwhile, all modules of the near-infrared contact lens are distributed around the contact lens, so that the daily life of a user is not influenced.

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 provides an amnion-loaded contact lens and a preparation method and application thereof. According to the invention, the bonding mode of the amniotic membrane and the contact lens is innovated, the previous mode of simply bonding the amniotic membrane and the contact lens by using medical biological glue is changed, the bonding procedure of the amniotic membrane and the contact lens is simplified, and the method is suitable for industrial application; the problems that the mechanical supporting force is reduced, the amniotic membrane is broken and the coverage is uneven due to the fact that the ocular surface coverage time of a traditional suture type amniotic membrane is prolonged are solved; in the aspect of material optimization and selection, the basic requirement of non-toxicity and harmlessness of the adhesive is met, and meanwhile, the requirements of biocompatibility and the oxygen permeability of the cornea on the contact lens are also considered; the amniotic membrane is more comfortable in the using process, complex operation procedures are not needed, and stimulation caused by no suture is avoided; the design scheme that the contact lens is used as the amniotic membrane support enables the amniotic membrane lens to provide better support and protection for the covered ocular surface.