Myopia suppression visual training device and light source control method thereof

Abstract

The invention discloses a myopia suppression visual training device and a light source control method thereof. The myopia suppression visual training device comprises a control module, a driving module controlled by the control module to work and a light emitting unit independently driven by the driving module to emit light. The light emitted by the light-emitting unit comprises a blue light spectrum with the peak wavelength of 460-480 nm, a red light spectrum with the peak wavelength of 630-680 nm and a mixed spectrum of a mixed spectrum with the peak wavelength of 380-780 nm. The myopia suppression visual training instrument device has the characteristics of multiple functions, multiple wavelengths and high performance, is expected to provide an effective visual training tool for myopia suppression and prevention, improves vision and visual adaptability, comprises the blue light LED lamp beads, the red light LED lamp beads and the white light LED lamp beads, and emits spectrums with different wavelengths. The multi-wavelength light source allows visual training to adapt to light rays of different spectrums, and helps to improve visual adaptability.

Description

Technical Field

[0001] This application relates to the field of health care, specifically a myopia inhibition visual training device and its light source control method. Background Technology

[0002] Myopia is gradually becoming a serious health problem among children and adolescents, attracting widespread attention. In response to the increasing prevalence of myopia among children and adolescents, a series of policies and measures have been introduced to prevent and control its development.

[0003] Vision training techniques have long been considered a promising approach to help prevent and control the development of myopia. These techniques promote improved eye accommodation and eye muscle coordination through eye movements and visual stimulation, thereby enhancing visual acuity and preventing myopia.

[0004] Against this backdrop, LED vision training technology for myopia suppression and prevention introduces new principles and methods. It utilizes LED light sources of specific wavelengths to illuminate the eyes, promoting blood circulation and metabolism in the eyes through the effects of light energy, thereby improving vision and preventing myopia. Specific principles include supplementing the beneficial light needed for retinal cell development, generating dopamine, promoting the production of photosensitive proteins and the synthesis of collagen, thereby improving visual quality and enhancing form, color, and light perception.

[0005] Furthermore, different lighting characteristics have varying effects on the formation and development of myopia. Light characteristics include light intensity, wavelength, flicker, and light distribution, which can influence the occurrence and development of myopia by adjusting the characteristics of the light source. Light quality is also an important factor; intelligently switching between long-wavelength white light, red light, and blue light can promote the sensitivity of cone cells and dopamine secretion, thereby inhibiting axial elongation, improving visual imaging and recognition abilities, and consolidating uncorrected visual acuity.

[0006] In summary, visual training technology for myopia suppression and prevention is an important technological field, offering promising methods for controlling myopia in children and adolescents. This technology utilizes the characteristics of light sources to modulate ocular physiological processes, thereby improving vision and reducing the risk of myopia. Currently, LED-based visual training technology for myopia suppression and prevention holds the promise of making even greater contributions to the visual health of children and adolescents in the future. Summary of the Invention

[0007] The purpose of this application is to overcome at least one deficiency of the existing technology and to provide a myopia suppression visual training instrument and its light source control method that can control and emit a specific light source to achieve better myopia prevention and control.

[0008] To achieve the above objectives, in a first aspect, this application discloses a myopia suppression visual training device, comprising a control module, a driving module controlled by the control module, and a light-emitting unit independently driven by the driving module to emit light; the light emitted by the light-emitting unit includes a blue light spectrum with a peak wavelength of 460-480nm, a red light spectrum with a peak wavelength of 630-680nm, and a mixed spectrum of 380-780nm; the ratio of the integral values ​​of the blue light spectrum, the red light spectrum, and the mixed spectrum is 2:3:5; the light-emitting unit includes at least one blue LED, at least one red LED, at least one white LED, and at least one light-diffusing sheet; each L The light emitted by the LED beads is uniformly mixed by a light-diffusing sheet before being emitted. The control module has at least one storage unit with a program for controlling the operation of each color LED bead and at least one processing unit capable of running the program. The control module has at least one output port connected to the drive module. The control module sends control commands to the drive module through the output port, and the control commands control the light source module to emit specific light in a controlled manner. The peak wavelength spectrum of the red LED is 630-680nm; the peak wavelength spectrum of the blue LED is 460-480nm; and the peak wavelength spectrum of the white LED is 380-780nm.

[0009] In some embodiments, a spectral detection component connected to the control module for sensing the wavelength of light is also included. The spectral detection component is used to detect the emission spectra of red LED beads, blue LED beads, and white LED beads individually, and feeds the detection data back to the control module. The control module corrects the control parameters of red LED beads, blue LED beads, and white LED beads based on the detection data.

[0010] In some embodiments, the LED beads of each color in the light-emitting unit adopt a modular array topology design.

[0011] In some embodiments, the retinal radiation exposure of the eye of the light-emitting unit is 8-13 J / cm2. In some embodiments, the red LED, blue LED and white LED in the light-emitting unit emit light individually at the same time, and the illumination time does not exceed 120 minutes.

[0012] In some embodiments, the red LED beads, blue LED beads and white LED beads in the light-emitting unit emit light simultaneously, and the illumination time does not exceed 150 minutes.

[0013] In some embodiments, the control module is connected to a communication module for communication, and the control module is connected to the server through the communication module.

[0014] In some embodiments, the control module is connected to a display module, which is used to display control information and operating status.

[0015] Furthermore, the display module has an input function and can send control commands to the control module.

[0016] In some embodiments, the light source module is fixed by a mechanism having a visual position adapted to the human eye for viewing the light emitted by the light source module.

[0017] Furthermore, the device is a wearable structure, making it convenient for personnel to wear and use.

[0018] In some embodiments, the driving module is a constant current power supply.

[0019] In some embodiments, the control module is a development board with a quad-core ARM Cortex-A53 architecture chip. The aforementioned myopia suppression visual training device features multifunctionality, multi-wavelength operation, and high performance, and is expected to provide an effective visual training tool for myopia suppression and prevention, improving vision and visual adaptation. The device includes blue LED beads, red LED beads, and white LED beads, emitting different wavelengths of light. This multi-wavelength light source allows for visual training to adapt to different light spectra, helping to improve visual adaptation.

[0020] Secondly, to achieve another objective of this application, this application also discloses a light source control method for a myopia suppression visual training device, comprising the following steps:

[0021] S1: Select a Gaussian distribution function with a bandwidth of 20nm as the spectral distribution curve of the LED;

[0022] S2: Select the peak wavelength interval and set the LED beads with different peak wavelengths according to the interval data;

[0023] S3: Calculate the corresponding drive current value for each LED bead.

[0024] The formula is: Where ST(λ) is the preset target spectral distribution curve, Si(λ) is the corresponding LED bead spectral distribution curve, and Ki is the current value. The problem of finding the optimal solution for the squared residual function Φ(λ,i) is solved to obtain the coefficient Ki that makes the two spectral curves closest, and finally, the corresponding current value Ki for each color LED bead is calculated.

[0025] S4: Adjust the driving current based on the current value Ki to drive the corresponding color LED beads. In some embodiments, the peak wavelength interval in step S2 is selected from 5nm, 10nm, and 20nm. More specifically, if the peak wavelength interval in step S2 is selected as 5nm, 85 LEDs are needed to simulate the entire spectrum curve from 380nm to 800nm.

[0026] Furthermore, in step S2, the peak wavelength interval is selected as 10 nm, and 43 LEDs are needed to simulate the entire spectrum curve from 380 nm to 800 nm.

[0027] To elaborate further, the peak wavelength interval in step S2 is selected as 20 nm, and 22 LEDs are needed to simulate the entire spectrum curve from 380 nm to 800 nm.

[0028] The above-mentioned light source control method based on the myopia suppression visual training device has at least one of the following beneficial effects:

[0029] 1. Precise Spectral Simulation: By selecting a Gaussian distribution function as the basis for the LED spectral distribution and accurately calculating the driving current, highly accurate target spectral simulation can be achieved. This means the light source can reproduce natural light or any other specific spectral curve very well, which is crucial for visual training. 2. Adjustable Light Source: Using LED beads with different peak wavelength intervals allows the system to simulate spectral curves at different resolutions as needed. This provides users with flexibility to adjust the spectral output according to specific applications.

[0030] 4. Optimized energy use: By optimizing the drive current value of each LED, unnecessary energy consumption can be reduced, because each LED will operate at the current most suitable for producing a specific spectrum output.

[0031] 5. Customized Visual Training Experience: The visual training experience can be customized by adjusting the spectral output of each LED to meet different training needs. This is particularly beneficial for treatment plans specifically tailored to individual vision problems.

[0032] 6. Reduced hardware requirements: By selecting appropriate peak wavelength intervals (e.g., 5nm, 10nm, 20nm), the number of LEDs required can be effectively reduced, manufacturing costs and complexity can be lowered, while still being able to simulate the entire required spectral range.

[0033] In summary, this method provides an LED light source control system capable of producing precise, adjustable, and efficient spectral output, suitable for spectrally sensitive visual training applications. Attached Figure Description

[0034] A better understanding of various aspects of this disclosure will be achieved by reading the following detailed description in conjunction with the accompanying drawings. The positions, dimensions, and extents of the structures shown in the drawings, etc., do not always represent actual positions, dimensions, and extents. In the drawings:

[0035] Figure 1 This is a hardware structure block diagram of one embodiment disclosed in this application.

[0036] Figure 2 This is a flowchart of the workflow of this application. Detailed Implementation

[0037] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

[0038] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. For the sake of brevity and / or clarity, techniques, methods, and devices known to those skilled in the art may not be discussed in detail; however, where appropriate, such techniques, methods, and devices should be considered part of this specification.

[0039] Example:

[0040] like Figure 1As shown in the illustration, this embodiment presents a myopia suppression visual training device. This device aims to inhibit myopia progression by stimulating the user's visual system with specific wavelengths of light. This embodiment includes a control module, a drive module, a light-emitting unit, a communication module, and a display module. The control module is the core of the myopia suppression visual training device. At its center is a high-performance microprocessor responsible for executing program code stored in its internal memory, controlling the operating states of each LED bead, including on / off, brightness adjustment, and flashing frequency. The control module contains at least one non-volatile memory (such as Flash) and random access memory (RAM). The non-volatile memory stores the control program, user settings, and operating system, while the RAM is used for data processing and temporary storage during program execution. At least one output port (typically a GPIO port, PWM output, or other type of interface) is used to send control signals to the drive module. Communication modules such as USB, Bluetooth, and Wi-Fi may also be included for receiving instructions from external devices (such as computers, smartphones, or tablets).

[0041] In this embodiment, the control module has a power management circuit, which is responsible for the power supply of the control module, ensuring stable voltage and current, and preventing power fluctuations from damaging the microprocessor and memory unit.

[0042] It's important to understand that the control module may have a built-in simplified operating system that provides a hardware abstraction layer, allowing high-level control logic to interact with the underlying hardware. In practical operation, the control module contains a set of pre-programmed programs or firmware to adjust the color, brightness, and blinking mode of the light-emitting units. These programs dynamically adjust the behavior of the LED beads according to the requirements of visual training.

[0043] In this embodiment, the driving module receives signals from the control module and accordingly drives the LED beads in the light-emitting unit accurately. Specifically, it includes a microcontroller, a power transistor, a current regulation circuit, a protection circuit, and an interface circuit: acting as a switch to control the large current and drive the LED beads.

[0044] The system includes a current regulation circuit and a power management circuit. The power transistor contains a linear regulator or a switching regulator to precisely control the current flowing through the LED. The protection circuit prevents damage to the LED from overcurrent or overvoltage and may include current limiting, thermal protection, and short-circuit protection. The interface circuit is the connection interface with the control module and may include digital I / O, analog signals, or a specific communication protocol interface. The power management circuit ensures a stable power supply for the driver module and the LED, and may include voltage conversion and adjustment. The microcontroller analyzes signals from the control module, which may be PWM signals, digital signals, or analog signals, to determine the LED's operating state and then adjusts the current according to the control module's commands to change the LED's brightness.

[0045] It should be noted that the drive module generates significant heat during operation, and a suitable heat sink should generally be considered. In this embodiment, the light-emitting unit is the part of the myopia suppression visual training device responsible for generating light. It consists of several independently controlled LED beads, a light diffuser, and optical elements. Specifically, it includes blue LED beads that emit a blue light spectrum with a peak wavelength of 460-480nm, which is used to provide a spectrum with specific effects on the eyes; red LED beads that emit a red light spectrum with a peak wavelength of 630-680nm, which is typically used to adjust contrast or provide specific stimuli in visual training; and white LED beads that emit a mixed spectrum with a peak wavelength of 380-780nm, which is used to simulate natural light or as background light for visual training.

[0046] In this embodiment, a light-diffusing sheet is used to uniformly mix the light emitted from each LED, avoiding localized light spots and improving the quality of visual training. Optical elements, including lenses, reflectors, or diffusers, are used to control and adjust the shape, direction, and distribution of the light beam.

[0047] It should be noted that since LEDs generate heat when working, the light-emitting unit is equipped with a heat sink or cooling fan to maintain the operating temperature of the LED beads and extend their lifespan.

[0048] Regarding the light source control method, this embodiment employs a sophisticated algorithm. First, a Gaussian distribution function with a bandwidth of 20 nm is selected as the benchmark for the LED spectral distribution. Then, LED beads with different peak wavelengths are set, with these peaks determined according to selected intervals (5 nm, 10 nm, or 20 nm) to cover the entire visual spectrum range from 380 nm to 800 nm. The specific steps are as follows:

[0049] Spectral distribution curve setting (Step S1): In this step, technicians select an appropriate Gaussian distribution function through the software interface to simulate the spectrum of natural light. This provides the foundation for subsequent light source mixing and phototherapy modes.

[0050] LED Selection and Setup (Step S2): Select suitable LEDs from a large LED database based on the required peak wavelength interval. If a 5nm interval is selected, 85 LEDs are needed to simulate the entire spectrum; if a 20nm interval is selected, 22 LEDs are needed.

[0051] Drive current calculation (step S3): A specialized algorithm is used to calculate the drive current value Ki for each LED. This algorithm is optimized by minimizing the difference between the preset target spectrum ST(λ) and the actual LED spectrum Si(λ), determining the current value that makes the two spectral curves closest.

[0052] LED Bead Driver (Step S4): Based on the calculated current value Ki, the driver module adjusts the current to precisely control each color of LED bead and achieve the predetermined spectrum output.

[0053] During phototherapy, the control module automatically adjusts the luminous intensity and working duration of each LED bead according to the preset irradiation time and spectral output requirements. Red, blue, and white LED beads can work individually or in combination to meet different treatment needs. When working individually, the irradiation time does not exceed 120 minutes; when working in combination, the irradiation time is controlled within 150 minutes.

[0054] To adapt to human vision, the light-emitting unit is fixed in place by a mechanism designed to match the visual position of the human eye, allowing users to directly view the emitted light. Furthermore, this mechanism is wearable and easily adjustable to suit different users, providing a comfortable user experience. Understandably, this myopia suppression visual training device fully integrates multifunctionality, multi-wavelength light sources, and high-performance control technology. It not only provides an effective visual training tool for myopia suppression but also improves vision and visual adaptability through precise control of different wavelength spectra. In addition, the device's modular design facilitates future upgrades and maintenance, ensuring long-term applicability and user satisfaction.

[0055] While exemplary embodiments of this disclosure have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of this disclosure without departing from the spirit and scope thereof. Therefore, all changes and modifications are included within the scope of protection of this disclosure as defined by the claims. This disclosure is defined by the appended claims, and equivalents of those claims are also included.

Claims

1. A myopia suppression visual training device, characterized in that: The system includes a control module, a drive module controlled by the control module, and light-emitting units that are independently driven by the drive module to emit light. The light emitted by the light-emitting units includes a blue light spectrum with a peak wavelength of 460-480nm, a red light spectrum with a peak wavelength of 630-680nm, and a mixed spectrum of 380-780nm. The ratio of the integral values ​​of the blue light spectrum, the red light spectrum, and the mixed spectrum is 2:3:

5. The light-emitting unit includes at least one blue LED, at least one red LED, at least one white LED, and at least one light-diffusing sheet. The light emitted by each LED is uniformly mixed by the light-diffusing sheet. The light source module emits light after being combined with the LEDs. The control module contains at least one storage unit with a program for controlling the operation of each color LED and at least one processing unit capable of running the program. The control module has at least one output port connected to the drive module. The control module sends control commands to the drive module via the output port, which control the light source module to emit specific light in a controlled manner. The peak wavelength spectrum of the red LED is 630-680nm; the peak wavelength spectrum of the blue LED is 460-480nm; and the peak wavelength spectrum of the white LED is 380-780nm.

2. The myopia suppression visual training device as described in claim 1, characterized in that: It also includes a spectral detection component connected to the control module for sensing the wavelength of light. The spectral detection component is used to detect the emission spectrum of red LED beads, blue LED beads and white LED beads individually, and feeds the detection data back to the control module. The control module corrects the control parameters of red LED beads, blue LED beads and white LED beads based on the detection data.

3. The myopia suppression visual training device as described in claim 1, characterized in that: The control module is connected to a communication module for communication, and the control module is connected to the server through the communication module.

4. The myopia suppression visual training device as described in claim 1, characterized in that: The control module is connected to a display module, which is used to display control information and operating status.

5. The myopia suppression visual training device as described in claim 1, characterized in that: The display module has an input function and can send control commands to the control module.

6. The myopia suppression visual training device as described in claim 1, characterized in that: The light source module is fixed by a mechanism that has a visual position adapted to the human eye, which is used for the human eye to view the light emitted by the light source module.

7. The myopia suppression visual training device as described in claim 1, characterized in that: The retinal radiation exposure of the eye of the light-emitting unit is 8-13 J / cm2.

8. The myopia suppression visual training device as described in claim 1, characterized in that: The red, blue, and white LED beads in the light-emitting unit emit light individually at the same time, with the illumination time not exceeding 120 minutes.

9. The myopia suppression visual training device as described in claim 1, characterized in that: The red, blue, and white LED beads in the light-emitting unit emit light simultaneously for no more than 150 minutes.

10. A light source control method for a myopia suppression visual training device, characterized in that: Includes the following steps: S1: Select a Gaussian distribution function with a bandwidth of 20nm as the spectral distribution curve of the LED; S2: Select the peak wavelength interval and set the LED beads with different peak wavelengths according to the interval data; S3: Calculate the corresponding drive current value for each LED bead. The formula is: Where ST(λ) is the preset target spectral distribution curve, Si(λ) is the corresponding LED bead spectral distribution curve, and Ki is the current value. The problem of finding the optimal solution for the squared residual function Φ(λ,i) is solved to obtain the coefficient Ki that makes the two spectral curves closest, and finally, the corresponding current value Ki for each color LED bead is calculated. S4: Adjust the driving current based on the current value Ki to drive the corresponding color LED beads.

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