Dynamic out-of-focus myopia prevention and control intelligent glasses

Abstract

The invention discloses a pair of dynamic out-of-focus myopia prevention and control intelligent glasses, which is characterized in that the eye using distance is monitored in real time through a distance sensing module integrated on a glasses frame, a control module performs analysis and decision, and when continuous short-distance eye using is detected, a micro-fluidic execution module is controlled to pump an aqueous humor simulation liquid into an environment capsule body around lenses, so that the myopia is prevented and controlled. The peripheral area of the lens is deformed to generate a myopia out-of-focus optical effect light spot, so that the growth of an eye axis is inhibited; and when long-distance eye use is detected, the liquid is pumped back, so that the lenses are restored to the original shape, and the definition of hyperopia is ensured. According to the invention, silent, non-inductive, dynamic and intelligent adjustment of the defocusing amount is realized through a microfluidic technology, the interference problem of fixed defocusing glasses and the complexity problem of mechanical zoom glasses are effectively solved, and excellent myopia prevention and control effects and seamless user experience are achieved.

Description

Technical Field

[0001] This invention relates to the field of ophthalmic medical devices and myopia control technology, specifically to a smart glasses that integrates microfluidic technology, can monitor eye distance in real time and automatically adjust the optical zone to generate a dynamic peripheral defocus effect, thereby inhibiting abnormal axial elongation. Background Technology

[0002] Myopia has become a global public health problem, and one of its fundamental pathological changes is the excessive elongation of the eye axis. Although traditional monofocal myopia correction glasses can correct central vision, they inevitably cause hyperopic defocus in the peripheral retina. This optical signal has been proven to stimulate the eyeball to grow backward, exacerbating the development of myopia.

[0003] To address this issue, existing technologies have proposed several solutions. One is a fixed defocus design. For example, Chinese utility model patent CN213903977U discloses a defocus contact lens that has a fixed receiving groove on the outer periphery of the optical zone filled with tear fluid, forming a static convex lens structure. The drawback of this solution is that the defocus amount is fixed and cannot adapt to the dynamic continuous visual needs of users from distance to near vision, and it can cause visual interference when used at a distance. Another solution is an active zoom design. For example, Chinese invention patent application CN106646916A discloses zoom glasses that achieve changes in diopter by manually or electrically driving the lens group to move or replace lenses for vision training. This solution is not based on an automatic response to the real-time visual environment and requires active user intervention or training. It has a complex structure, and its zoom mechanism relies on macroscopic mechanical displacement, making it difficult to achieve rapid, silent, and imperceptible precise adjustment.

[0004] Therefore, there is an urgent need in this field for an intelligent solution that can be seamlessly integrated into daily eye use scenarios, requires no user intervention, automatically and dynamically provides precise optical intervention based on real-time eye distance, and ensures that visual quality is not affected when viewing objects at a distance. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a smart glasses for myopia control with dynamic zoom. The glasses can intelligently sense the viewing distance and control the flow of fluid through microfluidic technology to dynamically change the shape and refractive power of the optical zone around the lens, thereby achieving fully automatic intelligent optical control of "defocus for near vision and clear vision for distant vision" and effectively inhibiting axial elongation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dynamic defocus control myopia smart glasses, comprising a frame and two lenses, characterized in that it further comprises a control module, a distance sensing module, a microfluidic execution module, a liquid reservoir and a battery module integrated on the frame;

[0008] The lens includes a central static (emphasizing that the shape remains unchanged) optical correction zone and a transparent and somewhat elastic annular capsule located on the periphery of the optical zone.

[0009] The distance sensing module is positioned close to the lens and is used to measure the distance between the human eye and the object being observed;

[0010] The reservoir is used to store the simulated room fluid;

[0011] The microfluidic actuator module is connected to the fluid passage connecting the annular bladder and the liquid storage bladder, and is used to control the bidirectional flow of the simulated house water liquid between the two.

[0012] The control module is connected to the distance sensing module and the microfluidic execution module, and is configured to determine the current eye use status based on distance sensing data and a time threshold, and control the action of the microfluidic execution module.

[0013] When it is determined that the eye is in a near-field use state, the microfluidic execution module is controlled to pump the simulated room water liquid into the annular capsule, causing it to deform and bulge outward, producing a myopic defocus optical effect.

[0014] When it is determined that the eye is in a state of long-distance use, the microfluidic execution module is controlled to pump the simulated room water liquid back to the reservoir to eliminate the myopia defocus optical effect and restore the preset central refractive correction degree.

[0015] The battery module is used to supply power to each power-demanding module.

[0016] The preferred embodiment of the lens is as follows:

[0017] The lens is formed by sealing two highly transparent and highly elastic (here it is only emphasized that it can meet the requirements of the application scenario of this invention) biocompatible polymer films such as thermoplastic polyurethane (TPU), silicone or optical grade PVC film through the periphery and the center, forming an optical correction area in the center which is formed by the two films being tightly attached and fixed together. When using the eyes at a distance, the outer periphery is a ring-shaped capsule composed of two films attached together (without liquid filling).

[0018] As a preferred option, the two films are sealed around the perimeter and in the center using an ultraviolet laser welding process.

[0019] The simulated room water liquid is preferably a transparent liquid with a refractive index between 1.33 and 1.34 (inclusive).

[0020] As a preferred embodiment, the present invention sets the sensing distance threshold and time threshold as follows:

[0021] When the distance between the human eye and the observed object is less than or equal to 33 centimeters and the time reaches 60 seconds, the control module determines that the current state is close-range eye use.

[0022] When the distance between the human eye and the observed object is perceived to be greater than or equal to 1 meter and the time reaches 60 seconds, the control module determines that the current state is a long-distance eye use state.

[0023] The microfluidic actuator module is a piezoelectric micropump, such as a piezoelectric ceramic pump, or a micro electromagnetic pump.

[0024] The battery module is a rechargeable lithium battery and integrates a wireless charging receiver coil.

[0025] Beneficial effects:

[0026] This invention determines the current eye usage status in real time based on distance perception data and time thresholds. When continuous near-field eye use is detected, the microfluidic actuator module operates in the forward direction, pumping a fixed amount of aqueous humor into the annular capsule. This causes the capsule wall to bulge outward, creating an additional convex lens effect in the peripheral area of ​​the lens. This produces myopic defocus on peripheral light, ensuring the image focal point falls in front of the retina and transmitting a signal to the eyeball to inhibit axial elongation. Simultaneously, it does not affect the central optical zone's vision correction effect. When far-field eye use is detected, the microfluidic actuator module operates in the reverse direction, drawing the aqueous humor back into the reservoir. This restores the peripheral optical characteristics of the lens to the preset central refractive correction, ensuring that the clarity and field of vision for distant objects are not affected. Therefore, this invention achieves fully automatic intelligent optical control with "defocus for near vision and clear vision for far vision." Attached Figure Description

[0027] Figure 1a This is a schematic diagram illustrating the working mode of the dynamic defocus control myopia smart glasses according to a preferred embodiment of the present invention;

[0028] Figure 1b This is a schematic diagram of the structure of the dynamic defocus control myopia smart glasses according to a preferred embodiment of the present invention;

[0029] Figure 2 This is a cross-sectional schematic diagram of the dynamic defocus control myopia smart glasses of the present invention in the case of long-distance eye use, according to a preferred embodiment of the present invention.

[0030] Figure 3 This is a cross-sectional schematic diagram of the dynamic defocus control myopia smart glasses of the present invention in a near-field eye use state according to a preferred embodiment of the present invention;

[0031] Figure 4 The flowchart shows the method by which the control module determines the current eye usage status. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0033] The dynamic defocus control myopia-prevention smart glasses in this embodiment are as follows: Figure 1a , 1b As shown, the glasses include a frame 1 and two lenses 2, which is a type of eyeglasses. The control module 3, distance sensing module 4, microfluidic execution module 5, liquid reservoir 6 and battery module 7 are integrated on the frame 1 of the glasses.

[0034] The frame 1 can be broadly divided into the frame 11 and the temples 12. In this embodiment, the battery module 7 uses a rechargeable lithium battery, which is located on the left temple and can integrate a wireless charging coil for convenient charging to power the various power-requiring modules of the glasses. The control module 3 uses an ultra-low power microprocessor (MCU) with a built-in negative feedback control algorithm, and is located on the right temple. The distance sensing module 4 uses a miniature infrared ranging sensor, or a miniature sensor based on the time-of-flight (ToF) principle, and is located at the nose pad of the frame 11 or at the brow line of the frame 11, for continuous, non-contact monitoring of the distance between the human eye and the target object. The microfluidic execution module 5 uses a miniature electromagnetic pump, or a piezoelectric micropump such as a piezoelectric ceramic pump, and is located at the connection point of the frame near the temples. The reservoir 6 is also located at this position. The reservoir 6 contains a transparent aqueous humor-like liquid with a refractive index between 1.33 and 1.34 (inclusive). This liquid can be a sterile, non-toxic transparent electrolyte solution or silicone oil with a specific refractive index. This refractive index was chosen to be closer to the refractive index of human aqueous humor, which is approximately 1.336.

[0035] In this embodiment, lens 2 is formed by sealing two highly transparent, highly elastic biocompatible polymer films, such as thermoplastic polyurethane (TPU), silicone, or optical-grade PVC films, with the periphery and center sealed using an ultraviolet laser welding process. This forms an optical correction area 21 in the center, tightly bonded and fixed by the two films, and an annular capsule 22 on the outer periphery composed of two adhered (without liquid filling) but separable films. The film of lens 2 is preferably optical-grade TPU, and its Young's modulus must match the design pressure to ensure controllable deformation and a long fatigue life. The sealing process uses ultraviolet laser welding to ensure reliable sealing and leak-free long-term use.

[0036] The two films can be processed using the following process: First, using a high-precision mold, two highly transparent flexible films with a specific curvature are prepared by injection molding, calendering, or spin coating; then, using precision laser welding equipment, the periphery and center of the two films are sealed, leaving a liquid injection port.

[0037] The injection port of the annular capsule 22 is connected to the reservoir 6 through a microfluidic conduit embedded in the mirror frame 11, and the microfluidic actuator 5 is connected to the conduit between them.

[0038] The working principle of the dynamic defocus myopia control smart glasses in this embodiment is as follows:

[0039] The system automatically powers on and starts up after the user puts on the glasses. Figure 1a As shown, the distance sensing module 4 continuously measures the distance D from the human eye to the observed object, such as a book or screen, at a certain frequency, and uploads the data to the control module 3. The control module 3 executes... Figure 4 The algorithm shown controls the bidirectional flow of the simulated aqueous solution between the annular capsule 22 and the reservoir 6 via the microfluidic execution module 5 (e.g., Figure 1a (as shown)

[0040] After initialization, read the distance D in a loop;

[0041] Determine whether D is less than or equal to 0.33 meters and whether the duration T of this state reaches 60 seconds.

[0042] If so, it is determined to be a near-field eye use state, and the microfluidic execution module 5 operates in the forward direction, pumping a fixed amount of simulated aqueous humor liquid into the annular capsule 22. After the liquid is injected, the capsule wall bulges outward, forming an additional convex lens effect in the peripheral area of ​​the lens 2, such as... Figure 3 As shown, it produces myopic defocus on peripheral light (the image focal point falls in front of the retina), transmits a signal to the eyeball to inhibit the growth of the axial length, and at the same time does not affect the corrective effect of the central optical zone on vision.

[0043] At the same time, determine whether D is greater than or equal to 1 meter and whether the duration T of this state reaches 60 seconds.

[0044] If so, it is determined to be a state of long-distance eye use. The microfluidic execution module 5 works in reverse, drawing the simulated aqueous humor liquid back into the reservoir 6. At this time, there is basically no liquid in the reservoir 22, and the film returns to flatness under its own elasticity. The peripheral optical properties of the lens are restored, and its optical properties are restored to the preset central refractive correction degree. Figure 2 As shown, this ensures that the clarity and field of vision when viewing objects at a distance are not affected in any way.

[0045] The lens 2 of this invention is not limited to the above-described scheme: the central position of the lens 2 is required to be a static (emphasizing unchanged shape) optical correction zone, which can also be made of a rigid transparent material, and then connected to the outer periphery by a transparent and somewhat elastic annular capsule. This capsule can be pre-filled with a certain amount of aqueous humor-like liquid to achieve a preset central refractive correction degree when the eye is used for distance viewing, and when the eye is detected to be used for near viewing, a certain amount of liquid is added to cause it to deform and bulge outward, producing a myopic defocus optical effect.

[0046] This invention, based on a closed-loop negative feedback control system of "sensor-processor-actuator," achieves fully automatic linkage between real-time perception of the visual environment and optical intervention, requiring no user intervention and exhibiting extremely high compliance. This invention also has the following characteristics:

[0047] Advanced technology and concealment: It adopts microfluidic technology to change optical properties silently and without vibration through fluid, avoiding complex mechanical structures, resulting in better reliability and comfort;

[0048] Safety, comfort, and biomimetic design: This invention is a frame eyeglass that eliminates the risk of infection from contact with the cornea; it uses a water-like liquid as a regulating medium, ensuring good biocompatibility; central vision remains uninterrupted, providing a superior user experience.

[0049] The above embodiments are merely preferred embodiments of the present invention, and the scope of protection of the present invention should not be limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art based on the technical solutions disclosed in the present invention should fall within the scope of protection of the present invention.

Claims

1. A dynamic defocus control smart glasses for myopia prevention, comprising a frame and two lenses, characterized in that, It also includes a control module, a distance sensing module, a microfluidic actuation module, a reservoir, and a battery module integrated on the frame; The lens includes a central static optical correction zone and a transparent and somewhat elastic annular capsule located around the periphery of the optical zone. The distance sensing module is positioned close to the lens and is used to measure the distance between the human eye and the object being observed; The reservoir is used to store the simulated room fluid; The microfluidic actuator module is connected to the fluid passage connecting the annular bladder and the liquid storage bladder, and is used to control the bidirectional flow of the simulated house water liquid between the two. The control module is connected to the distance sensing module and the microfluidic execution module, and is configured to determine the current eye use status based on distance sensing data and a time threshold, and control the action of the microfluidic execution module. When it is determined that the eye is in a near-field use state, the microfluidic execution module is controlled to pump the simulated room water liquid into the annular capsule, causing it to deform and bulge outward, producing a myopic defocus optical effect. When it is determined that the eye is in a state of long-distance use, the microfluidic execution module is controlled to pump the simulated room water liquid back to the reservoir to eliminate the myopia defocus optical effect and restore the preset central refractive correction degree. The battery module is used to supply power to each power-demanding module.

2. The dynamic defocus myopia control smart glasses according to claim 1, characterized in that, The lens is formed by sealing two highly transparent and highly elastic biocompatible polymer films at the periphery and center, creating an optical correction zone in the center that is tightly bonded and fixed by the two films. When using the eyes at a distance, the outer periphery is a ring-shaped capsule composed of two films that are bonded together.

3. The dynamic defocus myopia control smart glasses according to claim 2, characterized in that, The two films are sealed around the perimeter and in the center using an ultraviolet laser welding process.

4. The dynamic defocus myopia control smart glasses according to claim 2, characterized in that, The film is a thermoplastic polyurethane (TPU), silicone, or optical-grade PVC film.

5. The dynamic defocus myopia control smart glasses according to claim 1 or 2, characterized in that, The simulated room water liquid is a transparent liquid with a refractive index between 1.33 and 1.

34.

6. The dynamic defocus myopia control smart glasses according to claim 1 or 2, characterized in that, When the distance between the human eye and the observed object is less than or equal to 33 centimeters and the time reaches 60 seconds, the control module determines that the current state is close-range eye use. When the distance between the human eye and the observed object is perceived to be greater than or equal to 1 meter and the time reaches 60 seconds, the control module determines that the current state is a long-distance eye use state.

7. The dynamic defocus myopia control smart glasses according to claim 1 or 2, characterized in that, The microfluidic actuator module is a piezoelectric micropump or a micro electromagnetic pump.

8. The dynamic defocus myopia control smart glasses according to claim 1 or 2, characterized in that, The battery module is a rechargeable lithium battery and integrates a wireless charging receiver coil.

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