Portable multifunctional myopia prevention and control equipment

Abstract

The invention relates to portable multifunctional myopia prevention and control equipment, which can well solve the problem that the existing myopia prevention and control products cannot give consideration to both convenience in carrying, wide application scene and multiple myopia prevention and control functions. The equipment is only 8 * 6 * 4 cm in size after being completely folded, is small and light in appearance, is worn on the wrist through the design of the wrist strap type C-shaped base, is easy to stabilize, is convenient to carry about, and is suitable for various scenes such as homework writing and electronic product watching at home in school class periods. According to the multifunctional myopia prevention and control system, an innovative concave and convex lens double-lens combined optical system is adopted, the distance between the two groups of lenses is adjusted through the air bag system, the focal length of the optical system is changed, and part of optical parameters are set, so that the distance of an object image is changed from 5m to 1m, and the nearest object image is pulled to be beyond 1m; and a positive lens combination focal length of the optical system is added, so that the multifunctional myopia prevention and control effects of object image zooming, foggy vision effect and eye muscle distance adjustment are realized.

Description

Technical Field

[0001] The present invention mainly relates to a novel physical optical device for preventing and controlling myopia. Background Art

[0002] Due to the increasing use of various electronic products and the increased time students spend studying, the incidence of myopia, especially among adolescents, is increasing year by year across China and around the world. The government has implemented relevant policies to protect the eyesight of young people and reduce the incidence of myopia. Currently, there are a variety of myopia prevention and control products on the market, mainly including three mainstream categories. The first category is myopia prevention and control glasses and lenses, such as OK glasses, defocus lenses, and fogging lenses. The second category includes myopia prevention and control devices, such as telescopes, fogging glasses, and myopia training devices. The third category includes auxiliary devices such as street lamps and physical therapy devices. (Low-concentration atropine is a pharmaceutical product and is not included in this comparison.) The first and second categories of products have been well-established in practice for myopia prevention and control, while the third category mainly serves as an auxiliary device. While each has its advantages, these devices and products also have significant drawbacks. For example, OK lenses are inconvenient to use, limiting their user base. Defocused and foggy lenses, which require glasses, are less popular with children. Telescope devices and foggy glasses are primarily used for reading and viewing electronic products at home, limiting their use in specific scenarios and durations. Myopia training devices also take up significant time during rest periods. These shortcomings limit their effectiveness in preventing and controlling myopia. This is especially true during school hours, when eyes are most actively used, and most products are not well-suited for this time window. Summary of the Invention

[0003] This invention primarily provides a new myopia prevention and control device. Its primary advantage is its compact and lightweight design, which comes in a wristband format and is easy to carry. It can be used in most eye-use scenarios and time periods, including school hours, effectively preventing and controlling myopia in multiple time periods. Its second advantage is that the myopia prevention and control unit of this invention utilizes an innovative dual-lens optical system, which not only achieves image telescope and foggy vision effects but also trains the eye muscles to adjust to near and far distances. Compared to other myopia prevention and control devices currently on the market, this is a multifunctional, all-in-one optical system.

[0004] The technical solution of the present invention: This device is mainly composed of an optical system, an extendable arm, a wristband-type base, and an airbag system, and its overall appearance is designed to be a "wristband-type" structure. Its technical characteristics are: (1) Through the foldable design of the optical system, the foldable design of the extendable arm, and the combination with the wristband-type base, the device is completely folded into a small rectangle. Combined with the wristband, it can be worn on the wrist at any time and unfolded at any time when in use. (2) The optical system (myopia prevention and control unit) of the device adopts an innovative optical system design, consisting of a convex lens and a concave lens. The combined optical system is similar to the effect of a positive-focus convex lens, and has a fogging effect when looking at close objects. A movable sealing design is used between the two lenses. By inflating and deflating air between the two lenses, the distance between the two groups of lenses is changed, thereby changing the focal length of the optical system, realizing its zoom and the change of the distance of the object image. The closest object image can be controlled at 1mm away, and the distant image is about 5mm, thereby achieving the effect of zooming the object. The object image is cyclically and gradually changed between the far and near distances, allowing the eyeball to achieve a relatively far and near distance adjustment, thereby achieving a multifunctional myopia prevention and control effect.

[0005] Based on the above technical solution, the present invention also provides the following features: The entire optical system consists of four lenses: two convex lenses at the bottom and two concave lenses at the top, with the upper lens smaller than the lower lens and a larger lens, in a trapezoidal design that is foldable in the middle. The two lenses of the optical system (myopia prevention and control unit) must have excellent light transmission, lightweight, and wear-resistant materials. A removable seal is designed between the two lenses, and the seal material must be highly flexible, maintain a certain degree of toughness, and be opaque.

[0006] According to the above technical solution, the present invention also has the following measures: the design of the optical system (myopia prevention and control unit) can be modified according to different populations (or different age groups). First, the minimum object distance can be modified (Note: the minimum object distance is the minimum distance between the optical system and an object such as a book, mobile phone, tablet, etc.). The minimum object distance can be increased with age, based on the distance from the table to the eyes in a standard sitting position (25cm for elementary school students and 30cm for high school students are suitable). Second, the focal length combination of the two lenses also varies with the minimum object distance (primarily by applying the Gaussian formula in optics to infer the corresponding focal lengths of the two lenses at different object distances). Third, the lens size can be designed according to age. The older the age, the larger the lens size can be, and the wider the field of view.

[0007] According to the above technical solution, the present invention also has the following measures: the optical system and the extension arm are connected via a universal joint to facilitate multi-directional adjustment of the optical system for better application in multiple scenarios.

[0008] According to the above technical solution, the present invention also has the following measures: the wristband base consists of two parts: a C-shaped mouth and a groove, and a rotating connection design is adopted in the middle. The base adopts a C-shaped design, which can better stabilize the entire device during use, and will not produce obvious shaking due to the movement of the arm, affecting the visual effect. The C-shaped mouth of the base adopts a movable design, and the opening can be large or small, which is suitable for wrists of different sizes. The wristband is connected to the base to better fix the base on the wrist. There is a recessed design on the front of the base, and the airbag system, extension arm and optical system can be completely stored and fixed in this groove after folding. The material of the wristband is required to have a certain degree of elasticity, a buckle-type design, and adjustable tightness. The base material is required to be metal, light in weight, strong in hardness, environmentally friendly and safe.

[0009] Based on the above technical solution, the present invention further comprises the following measures: the extension arm adopts a three-section, hollow design. Furthermore, through the special design of the maximum extension angles of each joint of the extension arm, the lowest vertical height after extension is exactly the minimum object distance (Note: the minimum object distance is the minimum distance between the optical system and an object such as a book, mobile phone, or tablet). The extension arm is required to be made of metal, which is lightweight, strong, environmentally friendly and safe.

[0010] Based on the above technical solution, the present invention also provides the following measures: The airbag system consists of a square air intake bag located on a wristband-type base, connected to a thin air guide tube that extends through an extendable arm and connects to the sealed cavity of the optical system. One or more micro exhaust valves of varying sizes are designed around the perimeter of the optical system to accommodate multiple frequency adjustments. There are two air intake methods for the airbag: a manual method, in which air is manually pressed to inflate the bag; and an automatic method, which utilizes a micro blower with a rechargeable battery for automatic inflation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0012] Figure 2 It is a plan view of the optical system (viewed from above).

[0013] Figure 3 It is a plan view of the optical system (bottom view).

[0014] Figure 4 It is a side view schematic diagram of the optical system.

[0015] Figure 5 It is a planar cross-sectional view of the extension arm.

[0016] Figure 6 is a horizontal cross-sectional view of the wristband dock device after it has been folded and returned to its original position.

[0017] Figure 7is a horizontal cross-section view of the wristband dock device when it is opened.

[0018] Figure 8 This is a top plan view of the wristband base with the two base parts rotated 90 degrees.

[0019] Figure 9 This is a top view of the wristband base after it is folded.

[0020] Figure 10 It is a schematic diagram of a manual airbag system.

[0021] Figure 11 It is a schematic diagram of an automatic airbag system. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 The overall structure of the invention is composed of an optical system 1, an extension arm 2, a wristband base 3 and an airbag system 4. Figure 6 The wristband base 3 shown is worn on the wrist with the front of the base facing upward and secured to the wrist by a wristband 19. The wristband base 3 is divided into two parts: the wrist slot portion 3-1, which is C-shaped and features a movable buckle design with an adjustable opening; and the base groove portion 3-2, which is secured to the wrist slot 3-1 via a rotatable connection 18. The center groove of the base groove 3-2 is used to store the extension arm 2, optical system 1, and airbag system 4 when the device is closed. A horizontal cross-sectional view of the device after it is fully folded and stored is shown in the figure below. Figure 6 The horizontal cross-sectional view of the device after opening is as follows Figure 7 When using the device, first rotate the wristband base 3 90 degrees toward the inside of your arm. Figure 7 Make the front of the base perpendicular to the horizontal plane, rotate the base groove 3-2 so that its longitudinal axis is perpendicular to the horizontal plane, and then open the airbag system 4, extension arm 2 and optical system 1 in sequence. Figure 5 The extension arm 2 is designed with a certain maximum opening and closing angle through the three joints 13, 14, and 15, so that when it is fully extended, the lowest vertical height between the optical system 1 and the object is exactly the minimum object distance (Note: the minimum object distance is the minimum distance between the optical system and an object such as a book, mobile phone, tablet, etc.). The extension arm is connected to the air inlet 11 of the optical system 1 through the universal joint 12. The universal joint 12 is required to rotate in at least three directions. The air inlet 11 is a hollow design with a one-way valve inside to ensure the one-way flow of gas into the sealed structure of the optical system 1. Figure 2 and Figure 3As shown, the optical system 1 is composed of two identical concave lenses 5 at the top and two identical convex lenses 6 at the bottom. There is a fixed frame 7 around the lenses to ensure the stability of their shape. The middle of the fixed frame is connected by a joint 8 with a maximum extension angle of 180 degrees to ensure that the two sets of lenses are in the same horizontal plane after unfolding and can be folded in half from the middle. The peripheral frame 7 of the lower convex lens 6 is fixedly connected to the air inlet 11, and there is an exhaust valve system 10 designed around the frame. The exhaust valve system 10 is composed of 4 one-way exhaust valves with different frequencies, namely 15min, 30min, 40min, and a pressure exhaust valve to meet the zoom requirements of different frequencies. The two groups of lenses 5 and 6 are connected by a special sealing material 9. The sealing material is required to be highly elastic and thin, but also to ensure a certain degree of toughness and to be opaque. As Figure 4 1 shows the side direct view structure of the optical system 1 in the inflated state. Figure 5 It is a planar cross-sectional view of the air guide tube 16 of the airbag system 4 in the hollow tube cavity of the extension arm 2. Figure 10 This is a schematic diagram of the overall manual airbag system. The manual airbag system consists of an airbag 17 and an air guide tube 16. The airbag 17 is square and the same size as the groove of the wristband base 3. The air inlet and outlet of the airbag 17 are both designed with a one-way valve to ensure one-way circulation of gas. The material of the air guide tube 16 is required to be strong, environmentally friendly and safe, with an inner diameter of 1-1.5mm and an outer diameter of 2-3mm. Figure 11 It is a schematic diagram of the entire automatic airbag system. The automatic airbag system is composed of a micro-blower system 20, a battery pack 21 and an air duct 16. The micro-blower system is composed of a micro-blower and a rechargeable battery, and related circuits.

[0023] The specific usage process and functions are demonstrated as follows: First, wear the device on your non-dominant arm and rotate it 90 degrees inward. Then, rotate the groove portion 3-2 of the wristband base 90 degrees vertically, so that its longitudinal axis is perpendicular to the horizontal plane. Then, sequentially deploy the airbag system 4, optical system 1, and extension arm 2. Extend arm 2 is fully extended to its maximum angle. Then, adjust the angle of the optical system 1 to horizontal orientation (at a slight 15-degree angle with the surface of the book) for reading books or tablets, and vertical orientation (at a slight 15-degree angle with the surface of the book) for viewing a mobile phone, to ensure maximum field of view. Airbag system 4 inflates the sealed space of optical system 1. When the air volume reaches a preset maximum volume, the pressure relief valve of exhaust valve system 10 on the frame of optical system 1 automatically opens. Then, air is stopped and the pressure relief valve automatically closes. At this point, the maximum distance d between the two sets of lenses is exactly the preset distance 5 cm. Then, the exhaust valve is opened at a selected frequency, gradually and slowly evacuating the air from the sealed space over a preset time period (frequency), until the distance d between the two sets of lenses is reduced to 0 cm. Because the distance between the eyes and the desk varies at different ages, and combined with the changing pattern of the two sets of lens powers, this device sets its minimum object distance U to 25cm (Note: the minimum object distance is the minimum distance between the optical system and an object such as a book, mobile phone, or tablet). The focal length of the convex lens 6 is f'1=190mm, and the focal length of the concave lens 5 is f'2=-500mm. According to the Gaussian formula 1 / U+1 / V=1 / f in applied optics and the combined formulas for thin lens combination optical systems in air, f'=-f'1*f'2 / ∆ and ∆=d-f1'-f'2 (Note: f=-f' in air), substituting d=0cm into the above formula system yields V≈-1366mm. Substituting d=5cm into the above formula system yields V≈-5058mm. The above data shows that as the distance d between the two lens groups 5 and 6 of optical system 1 changes from 5 cm to 0 cm, the image formed after the object passes through optical system 1 is a virtual image, and the distance on the same side as the object gradually changes from 5058 mm to 1366 mm. The image seen by both eyes through optical system 1 is a process of gradually changing from 5058 mm to 1366 mm. By cyclically inflating and deflating airbag system 4, the image of both eyes repeatedly changes from 5058 mm to 1366 mm, thus achieving a cyclic adjustment training of the eyes from far to near. The design of the automatic airbag system also allows for alternating and repeated inflation and deflating, thus achieving an alternating cyclic training of the eyes from far to near and then back again. Furthermore, the minimum image distance V of optical system 1 is 1366 mm, thus achieving a state of the object image being distanced. Through the above optical system formula, it can be calculated that the combined focal length of the optical system 1 is f'≈263mm-306mm, which also means that the optical system plays the role of a positive lens for fog vision, which means that the device realizes the multi-functional myopia prevention and control function.The two groups of lenses 5 and 6 of the optical system 1 have a trapezoidal appearance with the upper part smaller and the lower part larger. Each group of lenses is a double-lens combination, and the design of opaque sealing material in the middle makes the overall optical design of the invention more scientific, closer, and more in line with the natural visual effect of the two eyes.

[0024] The parameters of Optical System 1 (minimum object distance U, convex lens focal length f'1, concave lens focal length f'2, and the spacing d between the two lens groups) are set based on multiple factors and calculations to arrive at a set of intermediate values suitable for most people. Based on individual differences, the parameters of Optical System 1 may be partially modified to achieve optimal results.

Claims

1. A portable multifunctional myopia prevention and control device, characterized in that Wristband-style appearance design and multi-functional myopia prevention and control optical system.

2. A portable multifunctional myopia prevention and control device according to claim 1, characterized in that The wristband-style appearance design mainly includes that when the device is fully folded and stored, it is only 8*6*4cm in size. It has a compact and light appearance. Through the wristband-style C-shaped base design, it can be worn on the wrist and is easy to carry.

3. The portable multifunctional myopia prevention and control device according to claim 1 is characterized in that A multifunctional myopia prevention and control optical system is adopted. The main contents include: the multifunctional myopia prevention and control system adopts an innovative concave and convex double-lens combination optical system, which adjusts the distance between the two groups of lenses through the airbag system, changes the focal length of the combined optical system, and sets some optical parameters, thereby realizing the change of the distance of the object from 5m-1m, and zooming the nearest object to 1m away, plus the positive lens combination focal length of the optical system, thereby realizing the multifunctional myopia prevention and control function of zooming in the object, foggy vision effect, and eye muscle distance adjustment training.

4. The multifunctional myopia prevention and control optical system according to claim 1 or 3, wherein the zoom function of the dual-lens combination optical system is achieved by cyclically inflating and exhausting air in the enclosed space between the two sets of lenses through an airbag system, thereby changing the distance between the two sets of lenses. The airbag system has two functional designs: manual inflation and automatic inflation.

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