CN114839796A - Variable-focus hard contact lens and manufacturing method thereof - Google Patents
Variable-focus hard contact lens and manufacturing method thereof Download PDFInfo
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H5/00—Exercisers for the eyes
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/08—Auxiliary lenses; Arrangements for varying focal length
- G02C7/081—Ophthalmic lenses with variable focal length
- G02C7/083—Electrooptic lenses
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
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- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/08—Auxiliary lenses; Arrangements for varying focal length
- G02C7/086—Auxiliary lenses located directly on a main spectacle lens or in the immediate vicinity of main spectacles
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
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Abstract
A variable focus rigid contact lens and method of making the same, the variable focus corneal shaping device comprising a rigid contact lens and a lens enclosure sealed to a convex side of the rigid contact lens, a concave surface of the rigid contact lens being configured to be removably mounted on a cornea; install the component of zooming between rigid contact lens and the transparent envelope, the component of zooming is across the central zone setting of lens envelope, rigid contact lens and transparent envelope have partial entity contact, can improve the ability of brain discernment image information as the basis, utilize liquid crystal zoom technique, make the regular formation of image of object before the person's of wearing retina, on the retina, behind the retina, and then can obtain effective sight training in different depth of focus scopes in the training of training person, the reaction rate of brain integration optic nerve has been improved, fault-tolerant ability grow, when the thing is looked to the actual bore hole, in the depth of focus certain range that can clearly see the thing, can both effectively clearly see the thing, in order to improve the fuzzy adaptability of brain.
Description
Technical Field
The invention relates to the field of optics, in particular to a variable focus hard contact lens and a manufacturing method thereof.
Background
Due to the fact that the study and working pressure of modern society are large, people suffering from eyesight problems such as myopia, presbyopia and amblyopia are more and more. In the prior art, the recovery of vision generally adopts the methods of wearing glasses, operation, visual function, physical therapy and the like. The glasses can only realize the vision recovery under the condition of wearing the eyes, so the defects of temporary solution and permanent cure exist, and when people do not wear the glasses, the vision is influenced, so the application has limitation. Visual function and physical therapy (such as massage) aiming at relaxation training of the inner and outer muscles of eyes has effects on pseudomyopia and poor effects on true myopia, so that the application is limited.
In the prior art, a training glasses device for recovering vision through physical therapy is also provided, wherein the training mechanism is based on a fuzzy adaptation theory (note later), the training glasses device mainly structurally comprises a glasses body and movable lenses driven by a motor speed reducing mechanism to move longitudinally, and the two movable lenses are respectively positioned at the rear ends of two fixed lenses of the glasses body. During operation, motor reduction gears is under control circuit board's effect, the change focus of the back-and-forth motion of two movable lens of circulation fast drive in fixed lens rear side, the best focus of movable lens and fixed lens, the best eyesight behind the training glasses equipment is worn to the person that also is promptly trained, confirm before the training (the dead point of movable lens has been confirmed), behind the supporting training glasses equipment of training person like this, just can relapse the object training of looking under two gears of best eyesight and most blurred vision (under the fog sight state), improve the ability of cerebral cortex optic nerve integration image, and then promote eyesight (in the actual training, the movable lens of training glasses equipment can stop a period of time after reaching two positions of dead point before or dead point after, it trains to see the object under fog sight or clear state to the person in a period of time). During training, the speed of the control motor of the existing training glasses equipment control circuit board (actually, the power output circuit which circularly and fixedly outputs the power with the positive pole, the negative pole and the positive pole) is consistent with the position of a front dead point and a rear dead point, namely, the control circuit is at a fixed value, the eyesight of a trainer is trained in a foggy vision state and an optimal eyesight mode, the training often causes the mode establishment of the fixed thinking of the brain of the trainer (the training reference is less), and when the glasses are not worn for naked eye vision of the training equipment subsequently, the reaction of the brain integrated optic nerve becomes slow, the fault-tolerant capability becomes low, so that the naked eye vision cannot be effectively recovered, for example, a camera can shoot a clear external object space range under the fixed focal length. The camera depth of focus is the distance of the image space corresponding to the depth of field of the camera, i.e. the image space that can be clearly recognized. In the case of the human eye system, the depth of focus can be defined as the diopter range where the visual system does not perceive blur (tolerable) as the maximum retinal defocus, although in theory a sharp image can only be produced when the object and the retina are exactly conjugate, but as long as it is within the depth of focus, the out-of-focus retinal image can be resolved by the brain into the same sharp image, and thus the depth of focus is essentially the error tolerance range of the neural and visual systems. Because the existing training glasses equipment can only be trained in the two modes of the foggy state and the best vision (effective training is not obtained in a certain range of the focal depth between the best vision object and the fuzzy vision object), the response speed of the brain integrated optic nerve becomes slow, the fault-tolerant capability becomes low, and when the object is seen by actual naked eyes, the object cannot be effectively seen in a certain range of the focal depth of the clearly visible object, so that the influence can be brought to the vision recovery of training personnel.
The principle of the Alvarez zoom glasses is that a zooming scheme is realized under the control of a Gabor function to improve fuzzy adaptability and further improve naked eye vision, but the weight of the Alvarez zoom glasses is about 100 g, and the Alvarez zoom glasses are too heavy and too uncomfortable to wear and not convenient to use, so that the adaptability of a user is improved to a low degree, the treatment rate is low, and the acceptance degree is low, so that the glasses capable of preventing the increase of the axis of the eye and improving the naked eye vision are required to be invented according to the existing problems;
prior application No. CN106461973A provides an eye-mountable device providing automatic adjustment and a method of making the same discloses an eye-mountable device providing automatic adjustment, wherein the eye-mountable device comprises a lens enclosure, an anterior electrode, a posterior electrode, an accommodation actuator element, the front electrode and the rear electrode are adopted, so that the structure is too complex, the zooming adjusting capability is not strong due to the arrangement of the front electrode and the rear electrode when the zoom lens is used, the invention mainly aims at presbyopic patients, transfers the originally worn frame presbyopic glasses to contact lenses, is a technology for correcting presbyopic vision, mainly aims at the auxiliary zooming function of presbyopic glasses during the process of viewing objects, still has the presbyopic problem of users after removing the contact lenses, changes the frame glasses into automatic zooming glasses, when the zoom contact lens is not worn, the vision is recovered as before, and the naked eye vision of a user cannot be improved.
Disclosure of Invention
The invention provides a variable-focus hard contact lens, which can improve the capability of a brain for identifying image information and simultaneously improve the vision of a user, and utilizes a liquid crystal zooming technology.A control circuit based on a Gabor function theory is arranged in a control chip (a Micro Control Unit (MCU)), the control chip controls the voltage of a first electrode and a second electrode of a transparent electrode ring according to the Gabor function to form a voltage difference to realize one or more zooming schemes, so that objects are regularly imaged in front of, on and behind the retina of a wearer, and further effective visual object training can be obtained in different focal depth ranges during training of a trainer, the maximum fault-tolerant capability of the brain can reach about 5D on average, and the response speed of the brain integrated optic nerve is improved, the fault-tolerant capability is increased, and when the object is actually viewed by naked eyes, the object can be effectively and clearly viewed within a certain range of the focal depth of the object which can be clearly viewed, so that powerful technical support is provided for the visual recovery of training personnel, and the fuzzy adaptability of the brain is improved; in combination with the hard contact lens, the hard orthokeratology lens can control the increase of the axis of the eye so as to control the development of myopia, thereby improving the fuzzy adaptability of the brain and simultaneously achieving the effect of improving the eyesight of naked eyes so as to solve the defects caused by the prior art.
The invention also provides a method for manufacturing the variable focus hard contact lens.
In order to solve the technical problems, the invention provides the following technical scheme:
a variable focus hard contact lens comprising a hard contact lens and a lens enclosure sealed to a convex side of the hard contact lens, the hard contact lens concave surface being configured to be removably mounted on a cornea (e.g., shaped to be removably mounted to a cornea and to allow eyelid movement for opening and closing);
a zoom element is mounted between the rigid contact lens and the transparent envelope, the zoom element being disposed in a central region of the lens envelope, the rigid contact lens being in partial physical contact with the transparent envelope.
The above-mentioned variable focus hard Contact Lens, wherein the hard Contact Lens is a corneal plastic Lens or an RGP Contact Lens or a high purity plastic PMMA Contact Lens, the Contact Lens has a hard and soft component, the soft Contact Lens mostly adopts hydrogel material, a few brands currently push out a silicone hydrogel Contact Lens with better Gas permeability, and there is no difference in nature, while the hard Contact Lens uses a high purity plastic (PMMA, polymethyl methacrylate), and the RGP Contact Lens (RGP, peripheral Gas Permeable contacts Lens) containing polymers such as silicon and fluorine, which can increase oxygen permeability.
The zoom element comprises a liquid crystal layer, an electrode ring assembly, a control chip and an annular battery, wherein the annular battery is provided with two charging electrodes which are respectively a positive charging electrode and a negative charging electrode and can charge the annular battery;
the annular battery is arranged on the periphery of the liquid crystal layer, the electrode ring assembly comprises a plurality of transparent electrode rings with different diameters, the transparent electrode ring with the smallest diameter is arranged at the center of the circle of the liquid crystal layer, the transparent electrode ring with the largest diameter is arranged at the periphery of the liquid crystal layer, preferably between the periphery of the liquid crystal layer and the inner wall of the annular battery, the control chip is respectively connected with each transparent electrode ring in a control mode, the annular battery is electrically connected to the control chip, and a plurality of transparent electrode rings with different diameters can be arranged between the transparent electrode ring with the smallest diameter and the transparent electrode ring with the largest diameter according to requirements;
the transparent electrode ring, the control chip, the annular cell are embeddable disposed inside the lens enclosure and near its perimeter to avoid interference with incident light received near the central region of the cornea.
A varifocal hard contact lens as described above, wherein the annular cell has an internal diameter of 6 to 8 mm, preferably 7 mm, an external diameter of 10 to 11 mm, preferably 10 mm, and a thickness of less than 0.5 mm;
and an annular sealing plate is arranged between the inner wall of the annular battery and the periphery of the liquid crystal layer, and the annular sealing plate and the rigid contact lenses are made of the same material.
The control chip is internally provided with a control circuit, the control circuit respectively controls the voltage applied by each transparent electrode ring to control the liquid crystal layer, the control circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4 and a comparator, the DA1 end of the control chip is connected to the negative electrode of the comparator through the resistor R1, and the negative electrode of the comparator is connected to the transparent electrode ring with the smallest diameter through the resistor R3;
the DA2 end of the control chip is connected to the anode of the comparator through the resistor R2, and the anode of the comparator is connected to the transparent electrode ring with the largest diameter through the resistor 4;
the output end of the comparator is connected with the transparent electrode ring with the smallest diameter, the voltage at the transparent electrode ring with the smallest diameter is 5V, and the voltage at the transparent electrode ring with the largest diameter is 0V;
wherein resistance R1 with resistance R2's resistance is unanimous, resistance R3 with resistance R4's resistance is unanimous, when using, by control chip control output to the diameter is minimum current value Vi1 of transparent electrode circle and then the control diameter is minimum the voltage of transparent electrode circle department, control chip control output to the diameter is the biggest current value Vi2 of transparent electrode circle's size and then the control diameter is the biggest voltage of transparent electrode circle department for the diameter is minimum transparent electrode circle and diameter are the biggest form the voltage difference between the transparent electrode circle, and molecular structure's liquid crystal layer orientation direction changes, makes the optical path of light at the spatial position of liquid crystal layer change to change the refracting index of liquid crystal layer, and the focus through the liquid crystal layer changes like this, makes and forms different focuses, forms the image respectively at the place ahead of the person's of wearing retina, On the retina and behind the retina, the front focal depth and the back focal depth of the left eye and the right eye are trained, effective visual object training can be obtained in different eye focal depth ranges, the fuzzy adaptability and the response speed of the brain are improved, the fault-tolerant capability is increased, when objects are seen by naked eyes actually, the objects can be effectively and clearly seen within a certain range of the focal depth of the clearly seen objects, the brain of a trainer has the capability of image processing, and powerful technical support is provided for the visual recovery of the trainer;
the variable focus hard contact lens, wherein the control chip controls the liquid crystal layer by controlling the voltage applied by the transparent electrode ring with the smallest diameter and the transparent electrode ring with the largest diameter, so that an electrical insulation structure isolation and/or other isolation needs to be provided between the transparent electrode rings and between the control chip and the ring-shaped battery.
The variable focus hard contact lens comprises the following steps:
calculating an output voltage value according to the myopic diopter number or the equivalent spherical diameter of the user and transmitting the output voltage value to the control chip;
the control chip controls and outputs the output voltage of the corresponding transparent electrode ring;
after the corresponding transparent electrode ring is electrified, the polarity orientation, the optical path, the refraction and the focal length of liquid crystal molecules in the liquid crystal layer are regularly changed to generate 0.5D-10D focal length change, wherein D is an abbreviation of Diopters, and Chinese is diopter;
each transparent electrode ring corresponds to an output voltage value, a plurality of transparent electrode rings are supposed, the transparent electrode ring with the smallest diameter is arranged at the center of a circle of the liquid crystal layer, the transparent electrode ring with the largest diameter is arranged at the periphery of the liquid crystal layer, preferably between the periphery of the liquid crystal layer and the inner wall of the annular battery, the output voltage value of the transparent electrode ring with the smallest diameter is V1, the output voltage value of the transparent electrode ring with the largest diameter is V2, and the output voltage values of the transparent electrode rings between the transparent electrode ring with the smallest diameter and the transparent electrode ring with the largest diameter from inside to outside are sequentially marked as V3, V4 and V5-Vn;
when the diopter number of the user is-1.0D, V1 is set to be 5V, and V2-Vn is set to be 0V;
when the diopter number of the user is-2.0D, V1-V2 is set to be 5V, and V3-Vn is set to be 0V;
when the diopter number of the user is-3.0D, V1-V3 is set to be 5V, and V4-Vn is set to be 0V;
when the diopter number of the user is-4.0D, V1-V4 is set to be 5V, and V5-Vn is set to be 0V;
when the diopter number of the user is-5.0D, V1-V5 is set to be 5V, and V6-Vn is set to be 0V;
when the diopter number of the user is-6.0D, the V1-V6 is set to be 5V, and the V7-Vn is set to be 0V;
when the diopter number of the user is-7.0D, V1-V7 is set to be 5V, and V8-Vn is set to be 0V;
when the diopter number of the user is-8.0D, V1-V8 is set to be 5V, and V9-Vn is set to be 0V;
when the diopter number of the user is-9.0D, V1-V9 is set to be 5V, and V10-Vn is set to be 0V;
when the diopter number of the user is-10.0D, V1-V10 is set to 5V, and V11-Vn is set to 0V.
A variable focus hard contact lens as described above, wherein the lens enclosure is a contact lens material, the lens enclosure may be made from a variety of materials suitable for direct contact with the human eye, such as a polymeric material, a hydrogel, PMMA, a silicon based polymer (e.g. fluorosilicone acrylate), or the like.
In a second aspect, a method for manufacturing a variable focus hard contact lens comprises the steps of:
step 1: annularly placing the annular battery provided with the control chip on the convex side of the hard contact lens;
step 2: placing a lens enclosure on the convex side of the rigid contact lens and covering the annular battery;
and step 3: sealing the lens enclosure to the rigid contact lens using a sealant;
and 4, step 4: injecting a liquid crystal solution between the lens capsule and the rigid contact lens, the liquid crystal solution forming a liquid crystal layer in the center of the annular cell;
and 5: checking whether the liquid crystal layer is uniform;
step 6: setting control parameters of a control chip;
and a plurality of output ends of the control chip are respectively connected with each transparent electrode ring through laser welding.
In the above method for manufacturing a variable focus hard contact lens, a liquid inlet hole and an exhaust hole are formed in the lens capsule, in step 4, a liquid crystal solution is injected between the lens capsule and the hard contact lens through the liquid inlet hole, air between the lens capsule and the hard contact lens is exhausted through the exhaust hole, and then the liquid inlet hole and the exhaust hole are sealed.
In the above method for manufacturing a variable focus hard contact lens, in step 4, the injection amount of the liquid crystal solution is monitored by a lensometer, and the zoom range is checked to achieve the degree of sealing and fitting.
In the method for manufacturing the variable focus hard contact lens, in step 5, whether the liquid crystal in the liquid crystal layer is uniform or not is observed through a microscope.
In the method for manufacturing a variable focus hard contact lens, in step 3, the lens enclosure and the hard contact lens are sealed by using a sealant.
In the method for manufacturing a variable focus hard contact lens, the control parameters are set according to a Gabor function, the control parameters include voltage variation frequency, phase, residence time, and the like, and the parameters such as the zoom range are checked by using parallel rays.
The working principle of the variable focus hard contact lens is as follows:
when the variable focus hard contact lens is worn on the eye, the control chip controls the output voltages Vi1 and Vi2 of the transparent electrode ring with the smallest diameter and the transparent electrode ring with the largest diameter under the cyclic control of a Boolean (Gabor) function during work, and further controls the voltages V1 and V2 of the transparent electrode ring with the smallest diameter and the transparent electrode ring with the largest diameter to change, so that a voltage difference is formed between V1 and V2, when V1-V2=3-5V, the object is imaged in front of the retina, the eye of the wearer is in a fuzzy visual object state, namely poor training vision, when V1-V2=3V, the object is imaged on the retina, the eye of the wearer is in an optimal visual object state, namely optimal training vision, when V1-V2=1-3V, the object is imaged behind the retina, the eyes of a wearer are in a fuzzy object viewing state, namely poor training vision, and the fluctuation is controlled according to the control, so that objects are regularly imaged in front of the retina, on the retina, behind the retina, on the retina and in front of the retina, and further the influence of impulse is generated on the visual nerve of the brain, and the capability of the brain for identifying image information is improved;
the liquid crystal zooming hard contact lens utilizes the effect that the refractive index of a liquid crystal layer is changed under the action of micro current, so that the diopter of an optical area of the hard contact lens is changed, a zooming scheme of-0.5D to +0.5D or-1D to +1D or-1.5D to +1.5D or-2D to +2D is generated, and various zooming schemes can be generated, so that the fuzzy adaptability of a myope is improved, the naked eye vision is improved, the convenience and simplicity are realized, the acceptance degree is high, the vision is improved quickly, the hard contact lens is worn at night and taken down in the day, the naked eye vision can be improved, and discomfort and sequelae are avoided.
The technical scheme provided by the variable focus hard contact lens and the manufacturing method thereof according to the invention has the following technical effects:
based on the influence of impulse on the visual nerve of the brain when the glasses zoom and the improvement of the capability of the brain to recognize image information, a liquid crystal zooming technology is utilized, a control circuit based on Gabor function theory is installed in a control chip (a microprocessor MCU), the control chip controls the voltage of a first electrode and a second electrode of a transparent electrode ring according to the Gabor function to form a voltage difference to realize one or more zooming schemes, so that objects are regularly imaged in front of, on and behind the retina of a wearer, further, the trainer can obtain effective visual object training in different focal depth ranges during training, the maximum fault-tolerant capability of the brain can reach about 5D on average, the response speed of the brain integrated visual nerve is improved, the fault-tolerant capability is increased, when the object is viewed by actual naked eyes, the object can be viewed effectively within a certain range of the focal depth of the visual object, powerful technical support is provided for the visual recovery of the trainees, so that the fuzzy adaptability of the brain is improved;
in combination with the hard contact lens, the hard contact lens can control the increase of the axis of the eye so as to control the development of myopia, thereby improving the fuzzy adaptability of the brain and simultaneously achieving the effect of improving the eyesight of naked eyes;
this application compares with the device that the current patent that application number is CN106461973A that provides the mountable of automatically regulated to eyes and manufacturing, this patent can not improve bore hole vision, be a presbyopic glasses's variant, this patent adopts rigid contact lens can effectively improve bore hole vision, and the control components and parts structure of adoption is different, it is structural simpler and use, the thickness of whole device has been reduced, the person of wearing that makes wears more comfortable, thereby reach the effect that improves bore hole vision when can effectively improve the fuzzy adaptability of brain, in order to reduce component and thickness, this device will charge and show electric quantity device, a switch, the device of adjustment chip state all sets up outside the rigid contact lens that can zoom.
Drawings
FIG. 1 is a schematic view of a variable focus hard contact lens of the present invention;
FIG. 2 is a schematic structural view of an imaging principle of a variable focus hard contact lens according to the present invention;
FIG. 3 is a circuit diagram of a control chip of a variable focus hard contact lens of the present invention;
FIG. 4 is a schematic view of a hard contact lens of a variable focus hard contact lens of the present invention;
FIG. 5 is a schematic view of a hard contact lens of the variable focus hard contact lens of the present invention using a keratoplasty lens;
FIG. 6 is a flow chart of a method of making a variable focus hard contact lens of the present invention;
FIG. 7 is a schematic diagram illustrating the variation of the polarity orientation of liquid crystal molecules in a liquid crystal layer in a method of zooming a variable focus hard contact lens according to the present invention;
FIG. 8 is a schematic view of a liquid crystal layer in a variable focus hard contact lens of the present invention;
fig. 9 is a schematic view of a connection structure between a control chip and a liquid crystal layer in a variable focus hard contact lens according to the invention.
Wherein the reference numbers are as follows:
the hard contact lens 101, the lens capsule 102, the liquid crystal layer 103, the control chip 104, the annular battery 105, the transparent electrode ring 106 with the smallest diameter, the transparent electrode ring 107 with the largest diameter, the positive charging electrode 108, the negative charging electrode 109, the annular cover plate 110, the eyeball 201, the peripheral arc 301, the first positioning arc 302, the second positioning arc 303, the reversed arc 304 and the base arc 305.
Detailed Description
In order to make the technical means, the inventive features, the objectives and the effects of the invention easily understood and appreciated, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the specific drawings, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments.
All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The invention provides a variable-focus hard contact lens and a manufacturing method thereof, aiming at improving the capability of a brain to recognize image information, a liquid crystal zooming technology is utilized, a control circuit based on Gabor function theory is installed in a control chip (a micro-processor unit MCU), the control chip controls the voltage of a first electrode and a second electrode of a transparent electrode ring according to the Gabor function to form a voltage difference to realize one or more zooming schemes, so that objects are regularly imaged in front of, on and behind the retina of a wearer, further, effective object-viewing training can be obtained in different focal depth ranges during training of the trainer, the maximum fault-tolerant capability of the brain can reach about 5D on average, the response speed of brain integrated optic nerves is improved, the fault-tolerant capability is increased, when the object is viewed by actual naked eyes, the focal depth of the object-viewing can be clearly within a certain range, the visual objects can be effectively and clearly seen, and powerful technical support is provided for the visual recovery of the trainees, so that the fuzzy adaptability of the brain is improved; in combination with the hard contact lens, the hard contact lens can control the increase of the axis of the eye so as to control the development of myopia, thereby improving the fuzzy adaptability of the brain and simultaneously achieving the effect of improving the eyesight of naked eyes.
As shown in fig. 1-2, a variable focus hard contact lens, comprising a hard contact lens 101 and a lens enclosure 102 sealed to the convex side of the hard contact lens 101, the hard contact lens 101 having a concave surface configured to be removably mounted on a cornea (e.g., shaped to be removably mounted to the cornea and to allow eyelid movement for opening and closing);
between the rigid contact lens 101 and the transparent envelope a zoom element is mounted, which is arranged in a central region of the lens envelope 102, the rigid contact lens 101 being in partial physical contact with the transparent envelope.
As shown in fig. 4, the hard contact lens 101 is an RGP contact lens or a high purity plastic PMMA contact lens.
As shown in fig. 5, the hard contact lens 101 is a keratoplasty lens having a multilayer structure of a peripheral arc 301, a first positioning arc 302, a second positioning arc 303, an inverted arc 304, and a base arc 305.
The zooming element comprises a liquid crystal layer 103, a transparent electrode ring, a control chip 104 (MCU) and an annular battery 105, wherein two charging electrodes, namely a positive charging electrode 108 and a negative charging electrode 109, are arranged on the annular battery 105 and can charge the annular battery 105;
as shown in fig. 9, the annular cell 105 is disposed at the periphery of the liquid crystal layer 103, the transparent electrode ring 106 with the smallest diameter is disposed at the center of the liquid crystal layer 103, the transparent electrode ring 107 with the largest diameter is disposed between the periphery of the liquid crystal layer 103 and the inner wall of the annular cell 105, the control chip 104 (MCU) controls and connects the transparent electrode rings, the annular cell 105 is electrically connected to the control chip 104 (MCU), and a plurality of transparent electrode rings with different diameters can be disposed between the transparent electrode ring 106 with the smallest diameter and the transparent electrode ring 107 with the largest diameter according to requirements;
a transparent electrode ring, control chip 104 (MCU), annular cell 105 may be embedded inside lens enclosure 102 and disposed near its perimeter to avoid interference with incident light received near the central region of the cornea.
Wherein, the inner diameter of the annular battery 105 is 6-8 mm, preferably 7 mm, the outer diameter is 10-11 mm, preferably 10 mm, and the thickness is less than 0.5 mm;
an annular sealing plate 110 is arranged between the inner wall of the annular battery 105 and the periphery of the liquid crystal layer 103, the material of the annular sealing plate 110 is the same as that of the hard contact lens 101, and the annular sealing plate 110 is used for preventing liquid crystal in the liquid crystal layer 103 from leaking outwards.
As shown in fig. 3, the control chip 104 (MCU) is internally provided with a control circuit, the control circuit controls the voltage applied by the transparent electrode ring 106 with the smallest diameter and the transparent electrode ring 107 with the largest diameter to control the liquid crystal layer 103, the control circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4 and a comparator, the DA1 end of the control chip 104 (MCU) is connected to the negative electrode of the comparator through a resistor R1, and the negative electrode of the comparator is connected to the transparent electrode ring 106 with the smallest diameter through a resistor R3;
the DA2 end of the control chip 104 (MCU) is connected to the positive electrode of the comparator through a resistor R2, and the positive electrode of the comparator is connected to the transparent electrode ring 107 with the largest diameter through a resistor 4;
the output end of the comparator is connected with the transparent electrode ring 106 with the smallest diameter of the transparent electrode ring, the voltage of the transparent electrode ring with the smallest diameter is 1-5V, and the voltage of the transparent electrode ring with the largest diameter is 0V;
when the liquid crystal display device is used, the control chip 104 (MCU) controls the magnitude of the current value Vi1 output to the transparent electrode ring 106 with the smallest diameter and further controls the voltage at the transparent electrode ring 106 with the smallest diameter, the control chip 104 (MCU) controls the magnitude of the current value Vi2 output to the transparent electrode ring 107 with the largest diameter and further controls the voltage at the transparent electrode ring 107 with the largest diameter, so that a voltage difference is formed between the transparent electrode ring 106 with the smallest diameter and the transparent electrode ring 107 with the largest diameter, the orientation direction of the liquid crystal layer 103 with a molecular structure is changed, the optical path length of light rays at the spatial position of the liquid crystal layer 103 is changed, the refractive index of the liquid crystal layer 103 is changed, the focal distance passing through the liquid crystal layer 103 is changed, different focal distances are formed, and the different focal distances are respectively imaged in front of retinas of a wearer's retina, On the retina and behind the retina, the front focal depth and the back focal depth of the left eye and the right eye are trained, effective object-viewing training can be obtained in different eye focal depth ranges, the fuzzy adaptability and the response speed of the brain are improved, the fault-tolerant capability is increased, when objects are viewed by naked eyes actually, the objects can be effectively and clearly viewed within a certain range of the focal depth of the clearly viewed objects, the brain of a trainer has the capability of image processing, and powerful technical support is provided for the recovery of the vision of trainees;
wherein, the voltage at the transparent electrode ring 106 with the smallest diameter is 5V, and the voltage at the transparent electrode ring 107 with the largest diameter is 0V.
Wherein the control chip 104 (MCU) controls the liquid crystal layer 103 by controlling the voltages applied by the transparent electrode rings 106 and 107 with the smallest and the largest diameters, so that it is necessary to provide electrical isolation structures and/or other isolations between the transparent electrode rings and between the control chip 104 (MCU) and the ring-shaped battery 105.
The zooming method of the variable-focus hard contact lens comprises the following steps:
calculating an output voltage value according to the myopic diopter number or the isosphere diameter of the user and transmitting the output voltage value to the control chip 104;
the control chip 104 controls and outputs the output voltage of the corresponding transparent electrode ring;
as shown in fig. 7, after the corresponding transparent electrode coils are powered on, the liquid crystal molecules in the liquid crystal layer 103 have regular changes in polarity orientation, optical path, refraction, and focal length, which results in 0.5D-10D focal length changes, where D is an abbreviation of dipoters, and chinese is diopter;
as shown in fig. 8, each transparent electrode ring corresponds to an output voltage value, and assuming that there are a plurality of transparent electrode rings, the transparent electrode ring with the smallest diameter is disposed at the center of the liquid crystal layer 103, the transparent electrode ring with the largest diameter is disposed at the periphery of the liquid crystal layer 103, preferably between the periphery of the liquid crystal layer 103 and the inner wall of the ring-shaped battery 105, the output voltage value of the transparent electrode ring with the smallest diameter is V1, the output voltage value of the transparent electrode ring with the largest diameter is V2, and the output voltage values of the transparent electrode rings between the transparent electrode ring with the smallest diameter and the transparent electrode ring with the largest diameter from inside to outside are sequentially denoted as V3, V4, V5-Vn;
when the diopter number of the user is-1.0D, V1 is set to be 5V, and V2-Vn is set to be 0V;
when the diopter number of the user is-2.0D, V1-V2 is set to be 5V, and V3-Vn is set to be 0V;
when the diopter number of the user is-3.0D, V1-V3 is set to be 5V, and V4-Vn is set to be 0V;
when the diopter number of the user is-4.0D, the V1-V4 is set to be 5V, and the V5-Vn is set to be 0V;
when the diopter number of the user is-5.0D, V1-V5 is set to be 5V, and V6-Vn is set to be 0V;
when the diopter number of the user is-6.0D, V1-V6 is set to be 5V, and V7-Vn is set to be 0V;
when the diopter number of the user is-7.0D, V1-V7 is set to be 5V, and V8-Vn is set to be 0V;
when the diopter number of the user is-8.0D, V1-V8 is set to be 5V, and V9-Vn is set to be 0V;
when the diopter number of the user is-9.0D, V1-V9 is set to be 5V, and V10-Vn is set to be 0V;
when the diopter number of the user is-10.0D, V1-V10 is set to 5V, and V11-Vn is set to 0V.
Where lens enclosure 102 is a contact lens material, lens enclosure 102 may be fabricated from a variety of materials suitable for direct contact with the human eye, such as a polymeric material, a hydrogel, PMMA, a silicon-based polymer (e.g., fluorosilicone acrylate), and the like.
In a second aspect, as shown in fig. 6, a method for manufacturing a variable focus hard contact lens comprises the following steps:
step 1: placing an annular battery ring 105 with a control chip 104 mounted thereon on the convex side of the hard contact lens 101;
step 2: placing the lens enclosure 102 on the convex side of the rigid contact lens 101 and covering the annular battery 105;
and step 3: sealing the lens enclosure 102 with the rigid contact lens 101 using a sealant;
and 4, step 4: injecting a liquid crystal solution between the lens capsule 102 and the rigid contact lens 101, the liquid crystal solution forming a liquid crystal layer 103 in the center of the annular cell 105;
and 5: checking whether the liquid crystal layer 103 is uniform;
step 6: setting control parameters of the control chip 104;
and a plurality of output ends of the control chip are respectively connected with each transparent electrode ring through laser welding.
Wherein, a liquid inlet hole and an exhaust hole are arranged on the lens capsule 102, in the step 4, liquid crystal solution is injected between the lens capsule 102 and the hard contact lens 101 through the liquid inlet hole, air between the lens capsule 102 and the hard contact lens 101 is exhausted through the exhaust hole, and then the liquid inlet hole and the exhaust hole are sealed.
And 4, monitoring the injection amount of the liquid crystal solution through a lensometer in the step 4, and checking the zooming range to achieve the degree of sealing and fitting.
In step 5, whether the liquid crystal in the liquid crystal layer 103 is uniform is observed through a microscope.
Wherein, in step 3, the lens enclosure is sealed with the rigid contact lens using a sealant.
In step 6, the control chip 104 may set the control parameters in various setting manners, for example, the control parameters are set according to a Gabor function, the control parameters include voltage variation frequency, phase, dwell time, and the like, and the parameters such as the zoom range are checked by using parallel light.
The working principle of the variable focus hard contact lens is as follows:
the variable focus hard contact lens is worn on the eye (in the same way as the contact lens), and in operation, the control chip 104 (MCU) controls the magnitudes of the output voltages Vi1 and Vi2 of the transparent electrode ring 106 with the smallest diameter and the transparent electrode ring 107 with the largest diameter under the cyclic control of a Gabor function, and further controls the magnitudes of the voltages V1 and V2 of the transparent electrode ring 106 with the smallest diameter and the transparent electrode ring 107 with the largest diameter to change the magnitudes of the voltages V1 and V2, so that a voltage difference is formed between V1 and V2, when V1-V2=3-5V, the object is imaged in front of the retina, the eye of the wearer is in a blurred vision state, that is, poor training vision, when V1-V2=3V, the object is imaged on the retina, the eye of the wearer is in an optimal vision state, that is, when V1-V2=1-3V, after the object is imaged on the retina, the eyes of a wearer are in a fuzzy object viewing state, namely poor vision training state, and fluctuation is controlled according to the control, so that the object is regularly imaged on the front part of the retina, on the retina, behind the retina, on the retina and in front of the retina, and further the influence on the brain visual nerve is generated, and the capability of the brain for identifying image information is improved.
The liquid crystal layer 103 is utilized to change the refractive index effect under the action of micro-current, so that the diopter of an optical area is changed, a zooming scheme from-0.5D to +0.5D or from-1D to +1D or from-1.5D to +1.5D or from-2D to +2D is generated, and various zooming schemes can be generated to improve the fuzzy adaptability of a myope and improve the naked eye vision, so that the myopia-resistant glasses are convenient and simple to use, have high acceptance degree and quick vision improvement, can be worn at night and taken off in the daytime, can improve the naked eye vision and have no discomfort and sequelae;
when the variable-focus cornea shaping device is worn for training and recovering eyesight, a wearer can wear the device all the time at night every day and take off the device in the daytime, seven days are a training process, and a consolidation process is added, so that the total time is about 3 months.
The prior knowledge about the theory of fuzzy adaptation is explained as follows: the vision of a person refers to the ability to distinguish fine or distant objects and fine parts, the ability of the eye to recognize a distant object or target is called distance vision, the ability to recognize a near fine object or target is called near vision, and in health examination, the distance vision is mainly examined, and under certain conditions, the smaller the object that the eye can distinguish is, the greater the visual acuity is, and the basic characteristic of the vision is to distinguish the distance between two points; the vision can be divided into static vision, dynamic vision and night vision. Static vision refers to the vision detected when both a person and an observed object are in a static state, and dynamic vision refers to the ability of eyes to capture, decompose and perceive images of a moving object when observing the moving object; when the vehicle is driven at a high speed, the physiological state of a human body is changed, particularly, the dynamic vision of eyes is reduced, and the eyes have various visual functions with different levels and different functions, which are related to a brain visual system to a certain extent; the eyes belong to an inherent component of a brain system, the eyes or eyeball tissues are only important channels for the connection between the brain and the outside, the eyeball activities are all limited by the brain, and the visual activities and the visual functions of the eyeball tissues are served for meeting the visual demands of the brain; in fact, the greater the interaction with the brain visual system, the greater the importance of the visual function, and in addition, the problem of coordination of the brain visual system, the tissues of the eyeball and the visual function state, which are also mutually affected and causal in most cases; the vision forming mainly comprises two parts of eyes and a brain, according to the forming principle of visual function, the fuzzy theory mainly focuses on the brain visual system, the fuzzy adaptation is brain visual perception training, and aims to improve the image recognition capability of the brain, namely the fuzzy recognition capability, and the training which is different from the traditional vision training is that the training does not carry out the training of eye muscle and binocular integration capability, the training focuses on the integration and compensation of the brain high-level center, the strength of the cerebral cortex is excited, the brain compensation effect is awakened, so that the trainees can improve the vision, for example, the binocular simultaneous vision and stereoscopic vision training can obviously help the monocular amblyopia, especially the intractable amblyopia, and the training shows that the brain high-level center also has positive effect on the vision identification, and the vision is a very subjective measurement result and not only has the refractive state (myopia, hyperopia, and the visual acuity of the eyes, Astigmatism) and other factors, mainly the function of learning and analysis of the brain, wherein the fuzzy adaptation is the process of learning and analysis of eye objects by the brain, and can obviously influence the vision result.
In summary, the variable focus hard contact lens and the manufacturing method thereof of the present invention can improve the capability of the brain to recognize image information, and utilize the liquid crystal zoom technology, a control circuit based on the Gabor function theory is installed in a control chip (microprocessor MCU), the control chip controls the voltage of the first electrode and the second electrode of the transparent electrode ring according to the Gabor function to form a voltage difference to realize one or more zoom schemes, so that the object is regularly imaged on the front retina, the retina and the back of the retina of the wearer, and further the trainer can obtain effective visual object training in different focal depth ranges during training, the maximum fault tolerance capability of the brain can reach about 5D on average, the response speed of the brain integrated visual nerve is improved, the fault tolerance capability is increased, and when the object is viewed by naked eyes actually, the focal depth of the visual object can be clear within a certain range, the visual objects can be effectively and clearly seen, and powerful technical support is provided for the visual recovery of the trainees, so that the fuzzy adaptability of the brain is improved; in combination with the hard contact lens, the hard contact lens can control the increase of the axis of the eye so as to control the development of myopia, thereby improving the fuzzy adaptability of the brain and simultaneously achieving the effect of improving the eyesight of naked eyes.
Specific embodiments of the invention have been described above. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; various changes or modifications may be made by one skilled in the art within the scope of the claims without departing from the spirit of the invention, and without affecting the spirit of the invention.
Claims (14)
1. A variable focus hard contact lens comprising a hard contact lens and a lens enclosure sealed to a convex side of the hard contact lens, the hard contact lens concave surface configured to be removably mounted on a cornea;
a zoom element is mounted between the rigid contact lens and the transparent envelope, the zoom element being disposed in a central region of the lens envelope, the rigid contact lens being in partial physical contact with the transparent envelope.
2. The variable focus rigid contact lens of claim 1, wherein said rigid contact lens is a orthokeratology lens or an RGP contact lens or a high purity plastic PMMA contact lens.
3. The variable focus hard contact lens of claim 1 or 2, wherein the zoom element comprises a liquid crystal layer, an electrode ring assembly, a control chip, and a ring battery, wherein two charging electrodes are disposed on the ring battery;
the annular battery sets up the periphery of liquid crystal layer, the electrode circle subassembly contains the different transparent electrode circle of a plurality of diameters that set gradually from inside to outside, and the diameter is minimum transparent electrode circle set up in the centre of a circle department of liquid crystal layer, the diameter is maximum transparent electrode circle set up in the periphery department of liquid crystal layer, control chip is control connection every respectively transparent electrode circle, install on the annular battery control chip, the annular battery electricity connect in control chip.
4. The variable focus hard contact lens of claim 3, wherein said annular cell has an inner diameter of 6-8 mm, an outer diameter of 10-11 mm, and a thickness of less than 0.5 mm;
the thickness of the liquid crystal layer is less than 0.5 mm;
and an annular sealing plate is arranged between the inner wall of the annular battery and the periphery of the liquid crystal layer.
5. The variable focus hard contact lens of claim 3, wherein a plurality of control circuits are built in the control chip, and each control circuit controls and outputs a voltage of each transparent electrode ring to control the liquid crystal layer to generate zooming.
6. The variable focus hard contact lens of claim 5, wherein the voltage at said transparent electrode ring with the smallest diameter is 5V and the voltage at said transparent electrode ring with the largest diameter is 0V.
7. The variable focus hard contact lens of any one of claims 5 to 6, wherein the method of zooming the variable focus hard contact lens is as follows:
calculating an output voltage value according to the myopic diopter number or the isosphere diameter of the user and transmitting the output voltage value to the control chip;
the control chip controls and outputs the output voltage of the corresponding transparent electrode ring;
after the corresponding transparent electrode ring is electrified, the polarity orientation, the optical path, the refraction and the focal length of liquid crystal molecules in the liquid crystal layer are regularly changed to generate 0.5D-10D focal length change;
wherein D is diopter.
8. A variable focus hard contact lens as claimed in any one of claims 1, 2, 4, 5 or 6, wherein said lens enclosure is a contact lens material; and a liquid inlet hole and an exhaust hole are formed in the lens enclosure.
9. A variable focus hard contact lens as claimed in claim 3, wherein said lens enclosure is a contact lens material; and a liquid inlet hole and an exhaust hole are formed in the lens enclosure.
10. A method of manufacturing a variable focus hard contact lens as claimed in any one of claims 3 to 7 and 9, comprising the steps of:
step 1: placing the annular battery with the control chip mounted thereon on the convex side of the rigid contact lens;
step 2: placing a lens enclosure on the convex side of the rigid contact lens and covering the annular battery;
and step 3: sealing the lens enclosure with the hard contact lens;
and 4, step 4: injecting a liquid crystal solution between the lens capsule and the hard contact lens, the liquid crystal solution forming a liquid crystal layer in the center of the annular cell;
and 5: checking whether the liquid crystal layer is uniform;
step 6: and setting control parameters of the control chip.
11. The method of claim 10, wherein in step 4, the liquid crystal solution is injected between the lens capsule and the hard contact lens through the liquid inlet hole of the lens capsule, air is exhausted between the lens capsule and the hard contact lens through the air outlet hole of the lens capsule, and then the liquid inlet hole and the air outlet hole are sealed.
12. The method of manufacturing a variable focus hard contact lens as claimed in claim 10 or 11, wherein in step 4 the amount of liquid crystal solution injected is monitored by a lensometer.
13. The method of claim 10, wherein step 5 is performed by observing the liquid crystal layer through a microscope whether the liquid crystal is homogeneous.
14. The method of claim 10, wherein in step 3, the lens enclosure is sealed to the rigid contact lens using a sealant.
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| CN117825010A (en) * | 2024-03-04 | 2024-04-05 | 平方和(北京)科技有限公司 | Contact lens dry lens focal power detection method and detection system |
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| CN117825010A (en) * | 2024-03-04 | 2024-04-05 | 平方和(北京)科技有限公司 | Contact lens dry lens focal power detection method and detection system |
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