CN114839796B - 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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- CN114839796B CN114839796B CN202110133394.8A CN202110133394A CN114839796B CN 114839796 B CN114839796 B CN 114839796B CN 202110133394 A CN202110133394 A CN 202110133394A CN 114839796 B CN114839796 B CN 114839796B
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Classifications
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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
- G02C7/04—Contact lenses for the eyes
- G02C7/049—Contact lenses having special fitting or structural features achieved by special materials or material structures
-
- A—HUMAN NECESSITIES
- 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
-
- 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
-
- 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
- G02C7/086—Auxiliary lenses located directly on a main spectacle lens or in the immediate vicinity of main spectacles
-
- 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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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Ophthalmology & Optometry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Pain & Pain Management (AREA)
- Epidemiology (AREA)
- Physical Education & Sports Medicine (AREA)
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- Veterinary Medicine (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a variable focus hard contact lens and a manufacturing method thereof.A variable focus cornea shaping device comprises a hard contact lens and a lens enclosure sealed to the convex side of the hard contact lens, wherein the concave surface of the hard contact lens is configured to be removably mounted on a cornea; the zoom element is arranged between the hard contact lens and the transparent enclosure, the zoom element is arranged across the central area of the transparent enclosure, the hard contact lens is in partial physical contact with the transparent enclosure, the capability of identifying image information of the brain can be improved, the liquid crystal zoom technology is utilized, objects can be regularly imaged in front of the retina, on the retina and behind the retina of a wearer, then effective vision training can be obtained in different focal depth ranges in training of a trainer, the response speed of the brain integrating optic nerve is improved, the fault tolerance capability is increased, and when an actual naked eye vision is realized, the vision can be effectively clarified in a certain range of the focal depth of the visible object, so that the fuzzy adaptability of the brain is improved.
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
Because of the great study and working pressure in modern society, more and more people have vision problems such as myopia, presbyopia, amblyopia and the like. In the prior art, methods of wearing glasses, performing surgery, visual functions, physiotherapy and the like are generally adopted for vision recovery. The glasses are worn to realize vision recovery under the condition of wearing the eyes, so that the defects of treating the symptoms and not treating the root cause exist, and when people wear the glasses, the vision is affected, so that the application is limited. Visual function and physical therapy (such as massage) are directed to relaxation training of the internal and external muscles of the eye, have effects on pseudomyopia and poor effects on true myopia, and therefore have limitations in application.
In the prior art, a training glasses device for restoring eyesight by physical therapy is also disclosed, the training mechanism of the training glasses device is based on a fuzzy adaptation theory (noted later), and the training mechanism mainly comprises a glasses body and a movable lens driven by a motor speed reducing mechanism to longitudinally move, wherein the two movable lenses are respectively positioned at the rear side ends of two fixed lenses of the glasses body. During operation, the motor speed reducing mechanism is under the effect of the control circuit board, the two movable lenses are driven to move back and forth at the rear side of the fixed lenses circularly and rapidly to change the focal length, and the optimal focal length of the movable lenses and the fixed lenses, namely, the optimal eyesight of a trainer after wearing training glasses equipment is determined before training (the dead point of the movable lenses is determined), so that the trainer can train objects under two gears of optimal eyesight and the most blurred vision (in a fog state) repeatedly, the capability of integrating images of the visual nerves of the cerebral cortex is improved, the eyesight is further improved (in actual training, the movable lenses of the training glasses equipment stay for a period of time after reaching the front dead point or the rear dead point, and the trainee trains the objects under fog or clear states in a period of time). Because the speed of the motor is controlled by the control circuit board (the power output circuit for circularly and fixedly outputting the positive and negative electrodes and the negative and positive electrodes) and the position of reaching the front and rear dead points are consistent during training, that is to say, the control circuit board is in a fixed value, the vision of a trainer is fixedly trained in a fog vision state and in an optimal vision mode, the training often causes the establishment of a brain fixed thinking mode (a few standard of training), and when the naked eye vision of the glasses training equipment is not worn in the follow-up, the response of the brain integrating optic nerve is slow, the fault tolerance capability is low, so that the naked eye vision cannot be effectively recovered, for example, a camera can shoot a clear external object space range under a fixed focal length. The camera focal depth is the distance of the image space corresponding to the camera depth of field, i.e. the image space that can be clearly identified. In the case of the human eye system, the depth of focus may be defined as the diopter range where the vision system does not perceive a blurred (tolerable) maximum retinal defocus, and although in theory a clear image is produced only when the object and retina are precisely conjugated, the defocused retinal image is resolved by the brain to the same clear image as long as it is within the depth of focus range, and thus the depth of focus is essentially the tolerance of the errors of the neural and vision system. Because the existing training glasses equipment can only be trained in the fog vision state and the optimal vision (the effective training is not achieved in a certain range of the focal depth between the optimal vision object and the blurred vision object), the response speed of the brain integrated optic nerve is reduced, the fault tolerance capability is lowered, and when the eyes of a person actually see the eyes of the person actually, the person can not effectively see the person clearly in the certain range of the focal depth of the person clearly, so that the vision recovery of the person is affected.
The existing cornea shaping glasses mainly play a role in preventing eye axis growth and thus preventing myopia from developing, but the vision is not improved, and the Alvarez zooming glasses capable of improving the vision are provided, and the principle is that a zooming scheme is realized under the control of Gabor functions to improve fuzzy adaptability and further improve naked eye vision, but the weight of the Alvarez zooming glasses is about 100 g, the cornea shaping glasses are too heavy and are too uncomfortable for a user to wear, and are not convenient to use, so that the adaptability improvement degree, the treatment rate and the acceptance degree of the user are low, and therefore, the glasses capable of preventing eye axis growth and improving naked eye vision are required to be invented according to the existing problems;
The prior patent application number CN106461973a discloses an apparatus for providing automatic adjustment and a manufacturing method thereof, wherein the apparatus for providing automatic adjustment and a device for mounting on an eye comprises a lens enclosure, a front electrode, a rear electrode and an adjusting actuator element, the front electrode and the rear electrode adopted by the apparatus make the structure too complex, and the zoom adjusting capability is not strong due to the arrangement of the front electrode and the rear electrode when the apparatus is used.
Disclosure of Invention
The invention aims to solve the technical problems that the prior hard contact lens has no method for preventing the eye axis from growing and improving the eyesight of a user, and provides the variable-focus hard contact lens which is based on improving the capability of brain to identify image information, wherein a control circuit based on a Gabor (Gabor) function theory is arranged in a control chip (micro processor MCU) by utilizing a liquid crystal zooming technology, the control chip controls the voltages of a first electrode and a second electrode of a transparent electrode ring according to the Gabor function to form a voltage difference so as to realize one or more zooming schemes, so that objects can be regularly imaged in front of the retina, on the retina and behind the retina of a wearer, and further the trainee can obtain effective vision training in different focal depth ranges, the maximum fault tolerance of the brain can be about 5D on average, the response speed of the brain to integrate the optic nerve is improved, the fault tolerance of the brain becomes large, and the visual acuity can be effectively realized in a certain range of the focal depth of the visible object, and the visual acuity technology can be improved to support the visual acuity of the trainee; the hard cornea shaping lens is matched with the hard contact lens, so that the eye axis growth can be controlled, and the development of myopia is controlled, so that the effect of improving the naked eye vision is achieved while the fuzzy adaptability of the brain is improved, and the defect caused by the prior art is overcome.
The invention also provides a manufacturing method of the variable-focus hard contact lens.
The invention provides the following technical scheme for solving the technical problems:
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 (e.g., shaped to be removably mounted to a cornea and allow eyelid movement to open and close);
A zoom element is mounted between the hard contact lens and the transparent enclosure, the zoom element being positioned in a central region of the lens enclosure, the hard contact lens being in partial physical contact with the transparent enclosure.
In the above-mentioned variable focal length hard contact lens, the hard contact lens is a cornea shaping lens, an RGP contact lens or a high purity plastic PMMA contact lens, the contact lens has a hard component and a soft component, the soft contact lens is mostly made of hydrogel materials, few brands of soft contact lenses are currently provided with silicone hydrogel contact lenses with better air permeability, the hard contact lens is essentially indistinguishable, but the hard contact lens uses a high purity plastic (PMMA, english full name polymethyl methacrylate, i.e. polymethyl methacrylate), and the polymer such as silicon and fluorine contained in the RGP contact lens (RGP english full name Rigid Gas Permeable Contact Lens, i.e. hard oxygen permeable cornea contact lens) can also increase the oxygen permeability.
The zoom hard contact lens 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, namely a positive charging electrode and a negative charging electrode, and the annular battery can be charged;
The annular battery is arranged at the periphery of the liquid crystal layer, the electrode ring assembly comprises a plurality of transparent electrode rings with different diameters, the transparent electrode rings with the smallest diameters are arranged at the circle center of the liquid crystal layer, the transparent electrode rings with the largest diameters are 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 controlled manner, the annular battery is electrically connected with the control chip, and a plurality of transparent electrode rings with different diameters can be arranged between the transparent electrode rings with the smallest diameters and the transparent electrode rings with the largest diameters according to requirements;
The transparent electrode ring, the control chip, and the annular battery are insertably disposed inside the lens enclosure and near the periphery thereof to avoid interference with incident light received near the central region of the cornea.
A variable focus hard contact lens as described above, wherein the annular cell has an inner diameter of 6-8 mm, preferably 7 mm, an outer diameter of 10-11 mm, preferably 10 mm, and a thickness of less than 0.5 mm;
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 is consistent with the hard contact lens in material.
The control chip is internally provided with a control circuit, the control circuit respectively controls the voltage exerted 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 with the negative electrode of the comparator through the resistor R1, and the negative electrode of the comparator is connected with the transparent electrode ring with the smallest diameter through the resistor R3;
The DA2 end of the control chip is connected with the positive electrode of the comparator through the resistor R2, and the positive electrode of the comparator is connected with 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;
The resistance R1 is consistent with the resistance of the resistance R2, the resistance R3 is consistent with the resistance of the resistance R4, when the visual training device is used, the control chip controls the magnitude of a current value Vi1 output to the transparent electrode ring with the smallest diameter so as to control the voltage at the transparent electrode ring with the smallest diameter, the control chip controls the magnitude of a current value Vi2 output to the transparent electrode ring with the largest diameter so as to control the voltage at the transparent electrode ring with the largest diameter, so that a voltage difference is formed between the transparent electrode ring with the smallest diameter and the transparent electrode ring with the largest diameter, the alignment direction of a liquid crystal layer of a molecular structure is changed, the optical path of light in the spatial position of the liquid crystal layer is changed, the refractive index of the liquid crystal layer is changed, the focal length of the liquid crystal layer is changed, different focal lengths are formed, the front focal depth and the back focal depth of a left eye and a right eye are respectively imaged in front of a retina, a retina and the back of a retina of a wearer, the visual training object is obtained in different eye ranges, the visual training object adaptability is improved, the visual training device has a visual training capability is improved, the visual training object has a visual training capability is improved, and the visual training capability is improved in a practical training capability is clear, and the visual training capability is provided for a visual object has a visual training capability is improved, and a visual training capability is clear, and a visual training object is provided for a visual training has a visual training capability is a visual object is in a visual training method;
In the above-mentioned variable focal length hard contact lens, 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 it is necessary to provide an electrical insulation structure and/or other isolation between the transparent electrode rings and between the control chip and the ring-shaped battery.
The above-mentioned one kind of variable focal length hard contact lens, wherein, the zooming method of the variable focal length hard contact lens is as follows:
Calculating an output voltage value according to the myopic refraction degree or the equivalent sphere diameter of the user and transmitting the output voltage value to a control chip;
The control chip controls and outputs the output voltage of the corresponding transparent electrode ring;
after the corresponding transparent electrode ring is powered on, the polarity orientation, optical path, refraction and focal length of liquid crystal molecules in the liquid crystal layer are regularly changed to generate focal length change of 0.5D-10D, wherein D is Diopters abbreviation, and Chinese is diopter;
Each transparent electrode ring corresponds to an output voltage value, provided that a plurality of transparent electrode rings are arranged, the transparent electrode ring with the smallest diameter is arranged at the center of the liquid crystal layer, the transparent electrode ring with the largest diameter is arranged at the periphery of the liquid crystal layer, and is preferably arranged 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 are sequentially recorded as V3, V4 and V5-Vn from inside to outside;
Setting V1 as 5V and V2-Vn as 0V when the refraction degree of the user is-1.0D;
Setting V1-V2 to 5V and V3-Vn to 0V when the refraction degree of the user is-2.0D;
setting V1-V3 to 5V and V4-Vn to 0V when the refraction degree of the user is-3.0D;
setting V1-V4 to 5V and V5-Vn to 0V when the refraction degree of the user is-4.0D;
setting V1-V5 to 5V and V6-Vn to 0V when the refraction degree of the user is-5.0D;
Setting V1-V6 to 5V and V7-Vn to 0V when the refraction degree of the user is-6.0D;
setting V1-V7 to 5V and V8-Vn to 0V when the refraction degree of the user is-7.0D;
setting V1-V8 as 5V and V9-Vn as 0V when the refraction degree of the user is-8.0D;
setting V1-V9 to 5V and V10-Vn to 0V when the refraction degree of the user is-9.0D;
When the refractive power 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 capsule is a contact lens material, the lens capsule may be fabricated from a variety of materials suitable for direct contact with the human eye, such as polymeric materials, hydrogels, PMMA, silicon-based polymers (e.g., fluorosilicone acrylates), and the like.
In a second aspect, a method for manufacturing a variable focus hard contact lens, comprising the steps of:
Step 1: placing an annular battery with a control chip mounted on the convex side of the hard contact lens in an annular manner;
Step 2: placing a lens capsule on the convex side of the hard contact lens and covering the annular cell;
Step 3: sealing the lens enclosure with the hard contact lens using a sealant;
Step 4: injecting a liquid crystal solution between the lens enclosure and the hard contact lens, wherein the liquid crystal solution forms a liquid crystal layer in the center of the annular battery;
Step 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 method for manufacturing the variable-focus hard contact lens, the liquid inlet and the air outlet are formed in the lens package, the liquid crystal solution is injected between the lens package and the hard contact lens through the liquid inlet in the step 4, air between the lens package and the hard contact lens is discharged through the air outlet, and then the liquid inlet and the air outlet are sealed.
In the above method for manufacturing a variable focal length hard contact lens, in the step 4, the amount of injected liquid crystal solution is monitored by a focal length meter, and the focal length range is checked to achieve the degree of sealing and fitting.
In the method for manufacturing the variable focal length hard contact lens, in the step 5, whether the liquid crystal of the liquid crystal layer is uniform is observed through a microscope.
In the method for manufacturing a variable focal length hard contact lens, in step 3, a sealant is used to seal the lens capsule and the hard contact lens.
The method for manufacturing the variable-focus hard contact lens comprises the steps of setting the control parameters according to a Gabor function, wherein the control parameters comprise voltage change frequency, phase, residence time and the like, and checking parameters such as a zoom range and the like by utilizing parallel rays.
The invention relates to a variable-focus hard contact lens, which has the following working principle:
When the variable-focus hard contact lens is worn on eyes, 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 Gabor function during operation, so as to control the voltage V1 and V2 of the transparent electrode ring with the smallest diameter and the transparent electrode ring with the largest diameter, so that voltage difference is formed between V1 and V2, when V1-V2 = 3-5V, an object is imaged in front of retina, the eye of a wearer is in a blurred vision state, namely poor training vision, when V1-V2 = 3V, the object is imaged on retina, the eye of the wearer is in an optimal vision state, namely optimal training vision, when V1-V2 = 1-3V, the eye of the wearer is imaged on back of retina, namely poor training vision, according to the control, the object is imaged on retina, the eye of the wearer is in a blurred vision state, namely poor training vision, the eye of brain is imaged on retina, the eye of the retina is in a large nerve, the eye is in a large nerve, and the brain is influenced on the retina, and the retina is in a large nerve, and the visual fluctuation is improved;
The liquid crystal zooming hard contact lens utilizes the effect of changing the refractive index of the liquid crystal layer under the action of micro-current, thereby changing the diopter of an optical zone of the hard contact lens, generating zooming schemes of-0.5D to +0.5D or-1D to +1D or-1.5D to +1.5D or-2D to +2D, and generating various zooming schemes so as to improve the fuzzy adaptability of myopic patients, improve the naked eye vision, and have the advantages of convenience, simplicity, high acceptance, quick vision improvement, night wearing, and capability of improving the naked eye vision by picking off in daytime without discomfort and sequelae.
The technical scheme provided by the variable-focus hard contact lens and the manufacturing method thereof has the following technical effects:
Based on the impact of impulse on brain visual nerves when glasses zoom, the capability of brain identification image information is improved, a control circuit based on a Gabor (Gabor) function theory is arranged in a control chip (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 so as to realize one or more zoom schemes, so that objects can be regularly imaged in front of retina, on retina and behind retina of a wearer, further, effective vision training can be obtained in different focal depth ranges in training of a trainer, the maximum fault tolerance of the brain can be about 5D on average, the reaction speed of brain integration optical nerves is improved, the fault tolerance becomes large, when the actual vision is seen, the vision can be effectively clear in a certain range of the focal depth of the vision, and a powerful technical support is provided for vision recovery of a training person so as to improve the adaptability of the brain;
The hard contact lens is matched, and the eye axis growth can be controlled by the hard contact lens, so that the development of myopia is controlled, and the effect of improving the vision of the naked eyes is achieved while the fuzzy adaptability of the brain is improved;
Compared with the prior patent with the application number of CN106461973A, the device which can be automatically adjusted and mounted to eyes and the manufacturing method thereof can not improve the eyesight of naked eyes, is a variant of presbyopic glasses, can effectively improve the eyesight of naked eyes by adopting hard contact lenses, has different structures of adopted control components, is simpler in structure and is used, reduces the thickness of the whole device, ensures more comfort for wearing of a wearer, can effectively improve the fuzzy adaptability of the brain and simultaneously achieves the effect of improving the eyesight of naked eyes, and in order to reduce elements and thickness, the device for charging and displaying the electric quantity device, a switch and a device for adjusting the state of a chip is arranged outside the variable-focus hard contact lenses.
Drawings
FIG. 1 is a schematic view of a variable focus hard contact lens according to the present invention;
FIG. 2 is a schematic diagram of the imaging principle of a variable focus hard contact lens according to the present invention;
FIG. 3 is a control circuit diagram of a control chip in a variable focus hard contact lens according to the present invention;
FIG. 4 is a schematic view of a rigid contact lens structure of a variable focus rigid contact lens according to the present invention;
FIG. 5 is a schematic view of a rigid contact lens employing a cornea shaping lens in a variable focus rigid contact lens according to the present invention;
FIG. 6 is a flow chart of a method for manufacturing a variable focus hard contact lens according to the present invention;
FIG. 7 is a schematic diagram showing the change of the polar orientation of liquid crystal molecules in a liquid crystal layer in a zooming method of a variable focus hard contact lens according to the present invention;
FIG. 8 is a schematic view of a liquid crystal layer of a variable focus hard contact lens according to the present invention;
fig. 9 is a schematic diagram of a connection structure between a control chip and a liquid crystal layer in a variable focal length hard contact lens according to the present invention.
Wherein, the reference numerals are as follows:
The hard contact lens 101, the lens enclosure 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 sealing plate 110, the eyeball 201, the peripheral arc 301, the first positioning arc 302, the second positioning arc 303, the reverse arc 304 and the base arc 305.
Detailed Description
In order to make the technical means, the inventive features, the achievement of the purpose and the effect of the implementation of the invention easy to understand, the technical solutions in the embodiments of the invention will be clearly and completely described in conjunction with the specific drawings, and it is obvious that the described embodiments are some embodiments of the invention, not all embodiments.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention.
Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
The invention provides a variable-focus hard contact lens and a manufacturing method thereof, which aim to improve the capability of brain to recognize image information, a control circuit based on a Gabor (Gabor) function theory is arranged in a control chip (micro processor unit) (MCU) by utilizing a liquid crystal zooming technology, the control chip controls the voltages of a first electrode and a second electrode of a transparent electrode ring according to the Gabor (Gabor) function to form a voltage difference so as to realize one or more zooming schemes, so that objects can be regularly imaged in front of retina, on retina and behind retina of a wearer, and further, the training of a trainer can obtain effective vision training in different focal depth ranges, the maximum fault tolerance of the brain can be about 5D on average, the response speed of brain integrated optic nerves is improved, the fault tolerance becomes large, and when the eyes are actually seen, the eyes can be effectively seen in a certain range of the focal depth of the vision clearly, and powerful technical support is provided for the vision recovery of the trainers so as to improve the fuzzy adaptability of the brain; the hard contact lens is matched, and the eye axis growth can be controlled, so that the development of myopia is controlled, and the effect of improving the vision of the naked eyes is achieved while the fuzzy adaptability of the brain is improved.
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 a convex side of the hard contact lens 101, the concave surface of the hard contact lens 101 configured to be removably mounted on the cornea (e.g., shaped to be removably mounted to the cornea and allow eyelid movement to open and close);
A zoom element is mounted between the hard contact lens 101 and the transparent capsule, the zoom element being disposed in a central region of the lens capsule 102, the hard contact lens 101 being in partial physical contact with the transparent capsule.
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 cornea shaping lens having a multi-layer structure of a peripheral arc 301, a first positioning arc 302, a second positioning arc 303, a reverse arc 304, and a base arc 305.
The zoom 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 battery 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 battery 105, the control chip 104 (MCU) is in control connection with the transparent electrode ring, the annular battery 105 is electrically connected with 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, a control chip 104 (MCU), and a ring-shaped battery 105 may be embedded inside the lens capsule 102 and disposed near its perimeter to avoid interference with incident light received near the central region of the cornea.
Wherein the annular cell 105 has an inner diameter of 6-8 mm, preferably 7 mm, an outer diameter of 10-11 mm, preferably 10 mm, and a thickness of 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 consistent with 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, a control circuit is built in the control chip 104 (MCU), 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 of the transparent electrode ring 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 the resistor R1, and the negative electrode of the comparator is connected to the transparent electrode ring 106 with the smallest diameter of the transparent electrode ring through the resistor R3;
The DA2 end of the control chip 104 (MCU) is connected with the positive electrode of the comparator through a resistor R2, and the positive electrode of the comparator is connected with the transparent electrode ring 107 with the largest diameter of the transparent electrode ring through a resistor 4;
the output end of the comparator is connected with the transparent electrode ring 106 with the smallest diameter, 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;
The resistance R1 is consistent with the resistance R2, the resistance R3 is consistent with the resistance R4, when the device is used, the control chip 104 (MCU) controls the current value Vi1 output to the transparent electrode ring 106 with the smallest diameter, and then controls the voltage at the transparent electrode ring 106 with the smallest diameter, the control chip 104 (MCU) controls the current value Vi2 output to the transparent electrode ring 107 with the largest diameter, and then 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 of light at the spatial position of the liquid crystal layer 103 is changed, and thus the refractive index of the liquid crystal layer 103 is changed, and then the focal length of the liquid crystal layer 103 is changed, so that different focal lengths are formed, and the current values are respectively imaged in front of the retina, on the retina and behind the retina of a wearer, the front focal depth and the back focal depth of the left eye and the eye are trained, an effective visual object can be obtained in different visual object training ranges, the visual object adaptability is improved, the visual object can be provided, the visual object can be effectively trained in the visual object training range, the visual object can be well, the visual object can be trained in the visual object can be has a visual object training capability, and the visual object can be clearly has a visual object, and visual object can be clearly trained in the visual object, and visual object can be clearly and has a visual object, and visual object can be clearly and practical and visual object, and visual object can be clearly and has a visual object quality and practical visual object quality;
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.
The control chip 104 (MCU) controls the voltage applied by controlling the transparent electrode ring 106 having the smallest diameter and the transparent electrode ring 107 having the largest diameter to operate the liquid crystal layer 103, and thus it is necessary to provide an electrical insulation structure and/or other isolation between the transparent electrode rings and between the control chip 104 (MCU) and the ring 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 refractive power or the equivalent sphere 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 ring is powered on, the polarity orientation, optical path, refraction and focal length of the liquid crystal molecules in the liquid crystal layer 103 are regularly changed, so as to generate a focal length change of 0.5D-10D, wherein D is Diopters abbreviated as "diopter" in chinese;
as shown in fig. 8, each transparent electrode ring corresponds to an output voltage value, assuming that there are a plurality of transparent electrode rings, the transparent electrode ring with the smallest diameter is arranged at the center of the liquid crystal layer 103, the transparent electrode ring with the largest diameter is arranged 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 annular 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 are sequentially recorded as V3, V4 and V5-Vn from inside to outside;
Setting V1 as 5V and V2-Vn as 0V when the refraction degree of the user is-1.0D;
Setting V1-V2 to 5V and V3-Vn to 0V when the refraction degree of the user is-2.0D;
setting V1-V3 to 5V and V4-Vn to 0V when the refraction degree of the user is-3.0D;
setting V1-V4 to 5V and V5-Vn to 0V when the refraction degree of the user is-4.0D;
setting V1-V5 to 5V and V6-Vn to 0V when the refraction degree of the user is-5.0D;
Setting V1-V6 to 5V and V7-Vn to 0V when the refraction degree of the user is-6.0D;
setting V1-V7 to 5V and V8-Vn to 0V when the refraction degree of the user is-7.0D;
setting V1-V8 as 5V and V9-Vn as 0V when the refraction degree of the user is-8.0D;
setting V1-V9 to 5V and V10-Vn to 0V when the refraction degree of the user is-9.0D;
When the refractive power of the user is-10.0D, V1-V10 is set to 5V, and V11-Vn is set to 0V.
Wherein the lens enclosure 102 is a contact lens material, the lens enclosure 102 can 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.
As shown in fig. 6, in a second aspect, a method for manufacturing a variable focal length hard contact lens includes the steps of:
Step 1: placing an annular battery ring 105 with a control chip 104 mounted on the convex side of the hard contact lens 101;
Step 2: placing the lens capsule 102 on the convex side of the hard contact lens 101 and covering the annular cell 105;
step 3: sealing the lens enclosure 102 with the hard contact lens 101 using a sealant;
step 4: a liquid crystal solution is injected between the lens capsule 102 and the hard contact lens 101, and the liquid crystal solution forms a liquid crystal layer 103 in the center of the annular cell 105;
Step 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.
The lens enclosure 102 is provided with a liquid inlet and a vent hole, in step 4, a liquid crystal solution is injected between the lens enclosure 102 and the hard contact lens 101 through the liquid inlet, air between the lens enclosure 102 and the hard contact lens 101 is exhausted through the vent hole, and then the liquid inlet and the vent hole are sealed.
In the step 4, the liquid crystal solution injection amount is monitored by a lensometer, and the zoom range is checked to achieve the degree of sealing and fitting.
In step 5, whether or not the liquid crystal of the liquid crystal layer 103 is uniform is observed by a microscope.
Wherein in step 3, the lens capsule is sealed to the hard 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 Gabor function, the control parameters include voltage change frequency, phase, residence time, etc., and parameters such as zoom range are checked by using parallel light.
The invention relates to a variable-focus hard contact lens, which has the following working principle:
When the variable-focus hard contact lens is worn on eyes (the wearing mode is the same as that of a contact lens), a control chip 104 (MCU) controls the output voltages Vi1 and Vi2 of a transparent electrode ring 106 with the smallest diameter and a transparent electrode ring 107 with the largest diameter under the cyclic control of a Gabor function during working, so that the voltage difference between V1 and V2 is formed by controlling and changing 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, when V1-V2=3-5V, an object is imaged in a blurred vision state, namely poor training vision, when V1-V2=3V, the object is imaged on the retina, namely optimal vision state, when V1-V2=1-3V, the object is imaged on the back of the retina, namely poor training vision, according to the control, the object is imaged on the retina, the eye is in a blurred vision state, namely poor vision is influenced on the retina, the eye is imaged on the retina, and the eye is fluctuant, and the retina is fluctuant, and the visual vision information is greatly influenced on the retina.
The effect of changing the refractive index under the action of micro-current is utilized by the liquid crystal layer 103, so that the refractive power of an optical zone 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, various zooming schemes can be generated, the fuzzy adaptability of a myopic patient is improved, the naked eye vision is improved, the convenience, simplicity, high acceptance degree, quick vision improvement and night wearing are realized, the naked eye vision can be improved by picking off in daytime, and discomfort and sequelae are avoided;
When the variable-focus cornea shaping device is worn and trained to recover vision, a wearer can wear the variable-focus cornea shaping device all the time every night and take off the variable-focus cornea shaping device in daytime, seven days is a training process and a consolidation process, and the total time is about 3 months.
The prior knowledge about fuzzy adaptation theory is explained as follows: the vision of a person refers to the ability to distinguish between small or distant objects and fine parts, the ability of the eye to identify distant objects or targets is referred to as distance vision, the ability to identify near small objects or targets is referred to as near vision, and in health examination, the near vision is mainly examined, under certain conditions, the smaller the object the eye can distinguish, the greater the acuity of vision, the basic feature of the vision is to distinguish the magnitude of the distance between two points; vision can be classified into static vision, dynamic vision, and night vision. Static vision refers to vision detected when a person and an observation object are in a static state, and dynamic vision refers to the capability of the eyes to capture images, decompose and sense images of a moving target when the eyes observe the moving target; when the vehicle is driven in a high-speed environment, the physiological state of a human body is changed, and the dynamic vision of eyes is reduced, the eyes have visual functions with different layers and different actions, and the eyes are connected with a brain visual system to a certain extent; the eyes are an inherent component part of the brain system, the eyes or eyeball tissues are only important channels for the brain to communicate with 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 visual function with higher interaction relevance with the brain visual system is more important, and in addition, the problems of coordination of the brain visual system, eyeball organ tissues and visual function states are solved, and most of the time, the problems are mutually influenced and cause each other; the vision is formed mainly by two parts, namely eyes and brains, according to the forming principle of vision functions, the main focus of the fuzzy theory is brain vision system, fuzzy adaptation is brain vision perception training, the aim of improving the image recognition capability of brains is to improve the fuzzy recognition capability, the difference between the vision training and the traditional vision training is that the vision training is not carried out on the training of the integrating capability of eye muscles and eyes, the training is focused on the integration and compensation of advanced centers of the brains, the strength of cerebral cortex is stimulated, and the brain compensation effect is aroused, so that a training person improves the vision, such as the simultaneous vision of two eyes and the stereo vision training, has obvious help to the single-eye amblyopia, especially the intractable amblyopia, the advanced center of cerebral cortex has positive effect on vision recognition, the vision is a very subjective measurement result, the vision is not only related to the refractive state (myopia, hyperopia and astigmatism) of eyes, but also has the effect of learning analysis of the brains, and the vision is the effect of the learning analysis of the brains.
In summary, the variable-focus hard contact lens and the manufacturing method thereof can improve the capability of brain to recognize image information, a control circuit based on a Gabor (Gabor) function theory is arranged in a control chip (micro processor MCU) by utilizing a liquid crystal zooming technology, 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 so as to realize one or more zooming schemes, so that objects can be regularly imaged in front of retina, on retina and behind retina of a wearer, further effective vision training can be obtained in different focal depth ranges in training of a trainer, the highest fault tolerance of the brain can be about 5D on average, the reaction speed of brain to integrate optic nerves is improved, the fault tolerance is increased, when the vision is actually seen by naked eyes, the vision can be effectively seen in a certain range of the focal depth of the vision, powerful technical support is provided for recovery of training staff, and the fuzzy adaptability of the brain is improved; the hard contact lens is matched, and the eye axis growth can be controlled, so that the development of myopia is controlled, and the effect of improving the vision of the naked eyes is achieved while the fuzzy adaptability of the brain is improved.
The foregoing describes specific embodiments of the invention. It is to be understood that the invention is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; numerous variations, changes, or substitutions of light can be made by one skilled in the art without departing from the spirit of the invention and the scope of the claims.
Claims (12)
1. A variable focus hard contact lens comprising a hard contact lens and a lens capsule 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 zooming element is arranged between the hard contact lens and the lens enclosure, the zooming element is arranged in the central area of the lens enclosure, and the hard contact lens is in partial physical contact with the lens enclosure;
The zoom element comprises a liquid crystal layer, an electrode ring assembly, a control chip and an annular battery, wherein two charging electrodes are arranged on the annular battery;
The annular battery is arranged at the periphery of the liquid crystal layer, the electrode ring assembly comprises a plurality of transparent electrode rings with different diameters, the transparent electrode rings with the smallest diameters are arranged at the circle center of the liquid crystal layer, the transparent electrode rings with the largest diameters are arranged at the periphery of the liquid crystal layer, the control chip is respectively connected with each transparent electrode ring in a control mode, the control chip is arranged on the annular battery, and the annular battery is electrically connected with the control chip;
the control chip is internally provided with a plurality of control circuits, and each control circuit respectively controls and outputs the voltage of each transparent electrode ring to control the liquid crystal layer to generate zooming;
the control chip circularly changes the zooming range of the liquid crystal layer through a gabor function, and the control parameters of the gabor function comprise voltage change frequency, phase and residence time, so that objects can be regularly imaged on the front retina, the upper retina, the rear retina, the upper retina and the front and rear focal depths of left and right eyes in training, and effective vision training can be obtained in different eye focal depth ranges.
2. A variable focus hard contact lens according to claim 1, wherein the hard contact lens is a cornea shaping lens or an RGP contact lens or a high purity plastic PMMA contact lens.
3. A variable focus hard contact lens according to claim 1, wherein the 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;
An annular sealing plate is arranged between the inner wall of the annular battery and the periphery of the liquid crystal layer.
4. A variable focus hard contact lens as claimed in claim 1, wherein the voltage at the transparent electrode ring of the smallest diameter is 5V and the voltage at the transparent electrode ring of the largest diameter is 0V.
5. A variable focus hard contact lens as claimed in any one of claims 1,4, wherein the method of zooming the variable focus hard contact lens is as follows:
Calculating an output voltage value according to the myopic refraction degree or the equivalent sphere 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 powered on, the polarity orientation, optical path, refraction and focal length of liquid crystal molecules in the liquid crystal layer are regularly changed, and the focal length change of 0.5D-10D is generated;
wherein D is diopter.
6. A variable focus hard contact lens as claimed in any one of claims 1, 2, 3, 4, wherein the lens capsule is a contact lens material; the lens enclosure is provided with a liquid inlet and a vent.
7. A variable focus hard contact lens as claimed in claim 1, wherein the lens capsule is a contact lens material; the lens enclosure is provided with a liquid inlet and a vent.
8. A method of making a variable focus hard contact lens as claimed in any one of claims 1 to 5, 7, comprising the steps of:
Step 1: placing an annular battery with a control chip mounted thereon on the convex side of the hard contact lens;
Step 2: placing a lens capsule on the convex side of the hard contact lens and covering the annular cell;
step 3: sealing the lens enclosure with the hard contact lens;
Step 4: injecting a liquid crystal solution between the lens enclosure and the hard contact lens, wherein the liquid crystal solution forms a liquid crystal layer in the center of the annular battery;
Step 5: checking whether the liquid crystal layer is uniform;
Step 6: setting control parameters of the control chip.
9. The method of claim 8, wherein in step 4, the liquid crystal solution is injected between the lens capsule and the hard contact lens through the liquid inlet hole on the lens capsule, the air between the lens capsule and the hard contact lens is exhausted through the air outlet hole on the lens capsule, and then the liquid inlet hole and the air outlet hole are sealed.
10. A method of producing a variable focus hard contact lens as claimed in claim 8 or 9, wherein the amount of liquid crystal solution injected is monitored by a lensometer in step 4.
11. The method of claim 8, wherein in step 5, the uniformity of the liquid crystal in the liquid crystal layer is observed by a microscope.
12. The method of claim 8, wherein in step 3, the lens enclosure is sealed to the hard contact lens using a sealant.
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| CN114839796A (en) | 2022-08-02 |
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