Low-contrast myopia prevention and control lens combined with one-line prism
By designing a combined lens of low-contrast lenses and a line prism, combined with laser micro-engraving technology and gradient refractive index materials, the problem that existing lenses cannot effectively reduce external muscle pressure and visual unclear when reading in close distances, achieving the prevention of progressive myopia and improving visual effects.
Patent Information
- Application Number
- CN202510430353.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2025-06-06
AI Technical Summary
Existing lenses cannot effectively reduce the pressure on the outer muscles of the eyeball wall when reading close-up, leading to the deterioration of progressive myopia. At the same time, the blackboard content cannot be clearly seen when used far away, which affects the wearing effect.
A low-contrast combined with first-line prism myopia prevention and control lens is designed. A semi-transparent light scattering area is constructed through the inner surface of the low-contrast lens. Combined with the design of the first-line prism, the light emitted by nearby objects is converted into parallel light, accurately focused on the center of the retina, and an auxiliary refractive adjustment area is set between the two to achieve optical smooth connection.
Effectively reduce the burden on the external and ciliary muscles, prevent the development of progressive myopia, and provide clear vision in distant areas, reduce aberrations and reflections, and improve overall imaging quality.
Smart Images
Figure CN120103634A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of lenses, and in particular to a low-contrast combined with a first-line prism myopia prevention and control lens. Background Art
[0002] In recent years, the myopia rate among children and adolescents has continued to rise, and has become an important issue that needs to be urgently addressed in my country's public health field. The overall myopia rate among children and adolescents nationwide is 53.6%, including 36.0% for primary school students, 71.6% for junior high school students, and 81.0% for high school students. Therefore, the myopia problem in younger age groups is particularly prominent, making protecting eyesight and preventing the progression of myopia an issue that needs to be urgently addressed.
[0003] In the prior art, commonly used single-focus lenses can only meet the needs of children and adolescents for long-distance viewing (such as blackboards). However, since the edge power of the lens is usually higher than the center, it will stimulate the eyes to increase the burden of adjustment and convergence when reading at close range, resulting in the continuous deepening of myopia when reading and writing for a long time. On the other hand, although the existing low-contrast lenses or single-focus lenses can reduce the burden of eye adjustment to a certain extent, they cannot effectively reduce the pressure of the extraocular muscles on the eyeball wall when reading at close range, making it difficult to prevent the deterioration of progressive myopia.
[0004] At the same time, although the lenses that use a combination of prisms and lenses can reduce the accommodation force and extraocular muscle pressure when used at close range, their design is only suitable for close-range use. It is impossible to clearly see the blackboard content when used at a distance, forcing users to wear two pairs of glasses with different functions. This not only affects the wearing effect, but also brings great inconvenience to students' daily study and life. To solve the above problems, we propose a low-contrast combined with a first-line prism myopia prevention and control lens. Summary of the invention
[0005] In view of the deficiencies in the prior art, the present invention provides a low-contrast combined with a first-line prism myopia prevention and control lens to solve the problems raised in the background technology.
[0006] The above technical objectives of the present invention are achieved through the following technical solutions:
[0007] A low-contrast combined with a first-line prism myopia prevention and control lens, comprising:
[0008] A low-contrast lens, wherein the inner surface of the low-contrast lens is constructed with a translucent light scattering area, wherein the translucent light scattering area is a circular area composed of laser micro-engraved particle points distributed in a star shape, wherein the lower half of the low-contrast lens is constructed with a linear prism, wherein the linear prism is constructed with a base and a base top, wherein the thickness of the linear prism gradually decreases from the base to the base top, and the cutting surface of the linear prism is located on the outer side of the low-contrast lens.
[0009] By adopting the above technical solution, a translucent light scattering area is constructed on the inner surface of the low-contrast lens using laser micro-engraving technology. This area is a circular area composed of laser micro-engraved particle points distributed in a star shape, which is mainly used to scatter incident light and reduce local light signal differences, thereby adjusting the light perception of the retina, thereby controlling the elongation of the eye axis and alleviating the worsening of myopia.
[0010] Preferably, the inner surface of the linear prism is integrated with the inner surface of the low-contrast lens, and the outer surface of the linear prism is connected to the low-contrast lens along the horizontal diameter direction to form a whole.
[0011] Preferably, the prism degree of the first-line prism is 2.75 to 3.25 prism degrees.
[0012] Preferably, an auxiliary refraction adjustment area is provided in the transition area between the low-contrast lens and the linear prism, and the auxiliary refraction adjustment area is made of a gradient refractive index material.
[0013] By adopting the above technical solution, in order to achieve optically smooth connection between the low-contrast lens and the linear prism, an auxiliary refraction adjustment area is set in the transition area between the two. It is made of a gradient refractive index material, and its thickness and refractive index gradually change along the transition direction, thereby reducing the aberration and reflection caused by the sudden change of the optical path.
[0014] Preferably, a central neutral density area is provided in the central area of the upper half of the low-contrast lens, and the central neutral density area is made of a neutral density material.
[0015] By adopting the above technical solution, a central neutral density area is set in the central area of the upper part of the low-contrast lens, which is made of neutral density material to balance the incident light intensity, reduce glare and relieve visual fatigue.
[0016] Preferably, the outer surface of the linear prism is provided with a lateral light guiding structure, and the lateral light guiding structure is constituted in the form of micro grooves or micro ridges.
[0017] By adopting the above technical solution, in order to further improve the close-range imaging quality, a lateral light guiding structure is designed on the outer surface of the first-line prism. The structure is in the form of micro-grooves or micro-ridges to guide part of the incident light to be transmitted along a preset path, thereby optimizing the light distribution in the near-use area.
[0018] Preferably, the inner surface of the low-contrast lens is covered with a micro-nano anti-reflection layer, and the micro-nano anti-reflection layer is formed by uniformly distributed nano-scale particles.
[0019] By adopting the above technical solution, the inner surface of the low-contrast lens is covered with a micro-nano anti-reflection layer, which is formed by uniformly distributed nano-scale particles. It can reduce the light reflectivity, improve the overall light transmittance, and have anti-fouling and self-cleaning effects.
[0020] Preferably, the lens portion of the first-line prism is any one of a concave lens, a convex lens or a plano lens, the upper half of the low-contrast lens is any one of a low-contrast concave lens or a low-contrast plano lens, and the shape of the first-line prism is any one of an elliptical, circular, arc-shaped or semicircular shape.
[0021] In summary, the present invention mainly has the following beneficial effects:
[0022] 1. The present invention adopts low-contrast lenses in the distance area to provide clear vision, and adopts a linear prism in the near area to convert the light emitted by the nearby object into parallel light, which is precisely focused on the center of the retina, thereby effectively reducing the burden on the extraocular muscles and ciliary muscles and preventing the development of progressive myopia.
[0023] 2. An auxiliary refraction adjustment area is set between the low-contrast lens and the first-line prism, and a gradient refractive index material is used to achieve a smooth optical connection, reduce aberrations and reflection problems caused by sudden changes in the optical path, and improve the overall imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0025] Figure 2 for Figure 1 A schematic diagram of a longitudinal cross-sectional structure;
[0026] Figure 3 for Figure 2 Schematic diagram of the locally enlarged structure of A in the middle.
[0027] Figure numerals: 1. low-contrast lens; 2. one-line prism; 3. base top; 4. base; 5. translucent light scattering area; 6. auxiliary refraction adjustment area; 7. central neutral density area; 8. lateral light guiding structure; 9. micro-nano anti-reflection layer. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.
[0029] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions. Simple improvements to the method of the present invention based on the concept of the present invention belong to the scope of protection required by the present invention.
[0030] Example 1
[0031] refer to Figure 1-Figure 3 A low-contrast combined one-line prism myopia prevention and control lens, comprising: a low-contrast lens 1, wherein the inner surface of the low-contrast lens 1 is constructed with a translucent light scattering area 5, the translucent light scattering area 5 is a circular area composed of laser micro-engraved particle points distributed in a star shape, and the lower half of the low-contrast lens 1 is constructed with a one-line prism 2, the one-line prism 2 is constructed with a base 4 and a base top 3, the thickness of the one-line prism 2 gradually decreases from the base 4 to the base top 3, and the cutting surface of the one-line prism 2 is located on the outer side of the low-contrast lens 1, and a translucent light scattering area 5 is constructed on the inner surface of the low-contrast lens 1 by laser micro-engraving technology. The area is a circular area composed of laser micro-engraved particle points distributed in a star shape, which is mainly used to scatter incident light and reduce local light signal differences, thereby adjusting the light perception of the retina, thereby controlling the elongation of the eye axis and alleviating the deepening of myopia.
[0032] The inner surface of the one-line prism 2 is integrated with the inner surface of the low-contrast lens 1, and the outer surface of the one-line prism 2 is connected to the low-contrast lens 1 along the horizontal diameter direction to form a complete image when reading or writing through the lower half of the entire product.
[0033] The prism degree of the first-line prism 2 is 2.75 to 3.25 prism degrees.
[0034] An auxiliary refractive adjustment zone 6 is provided in the transition area between the low-contrast lens 1 and the linear prism 2. The auxiliary refractive adjustment zone 6 is made of a gradient refractive index material. In order to achieve optically smooth connection between the low-contrast lens 1 and the linear prism 2, an auxiliary refractive adjustment zone 6 is provided in the transition area between the two. The auxiliary refractive adjustment zone 6 is made of a gradient refractive index material, and its thickness and refractive index gradually change along the transition direction, thereby reducing aberrations and reflections caused by sudden changes in the optical path.
[0035] A central neutral density area 7 is provided in the central area of the upper half of the low-contrast lens 1. The central neutral density area 7 is made of a neutral density material to balance the incident light intensity, reduce glare and relieve visual fatigue.
[0036] The outer surface of the linear prism 2 is provided with a lateral light guiding structure 8, which is composed of micro grooves or micro ridges. In order to further improve the close-range imaging quality, a lateral light guiding structure 8 is designed on the outer surface of the linear prism 2. The structure is composed of micro grooves or micro ridges to guide part of the incident light to be transmitted along a preset path, thereby optimizing the light distribution in the near-use area.
[0037] The inner surface of the low-contrast lens 1 is covered with a micro-nano anti-reflection layer 9, which is formed by uniformly distributed nanoscale particles. The inner surface of the low-contrast lens 1 is covered with a micro-nano anti-reflection layer 9, which is formed by uniformly distributed nanoscale particles. It can reduce the reflectivity of light, improve the overall light transmittance, and has anti-fouling and self-cleaning effects.
[0038] The lens part of the linear prism 2 is any one of a concave lens, a convex lens or a flat lens, the upper part of the low-contrast lens 1 is any one of a low-contrast concave lens or a low-contrast flat lens, and the shape of the linear prism 2 is any one of an ellipse, a circle, an arc or a semicircle.
[0039] In the manufacturing process, a one-time molding casting technology is adopted to integrally form the low-contrast lens 1, the first-line prism 2, the auxiliary refractive adjustment area 6, the central neutral density area 7, the lateral light guiding structure 8 and the micro-nano anti-reflection layer 9; after demolding, it is sequentially dried, hardened, polished, coated and nano-surface treated, and tested and optimized to form a low-contrast combined with a first-line prism myopia prevention and control lens.
[0040] from Figure 1 It can be seen that a line prism 2 is located below the optical center of the low-contrast lens 1, the inner surface of the line prism 2 and the semi-transparent light scattering area 5 together form the inner surface of the entire lens, the outer surface of the line prism 2 is an inward concave surface or an outward convex surface, the inward concave surface is used for mild myopia, and the outward convex surface is used for high myopia, the upper edge of the line prism 2 part extends from the inside to the outside along the 180-degree horizontal diameter of the entire lens to form a base top 3 and a base 4, the base top 3 is thin and located on the outside of the lens, the base 4 is thick and located on the inside of the lens, and the thickness gradually decreases from the base 4 to the base top 3 to It is smoothly connected to the low-contrast lens 1 part. When in use, the base top 3 of the left eye lens is horizontally to the left, and the base 4 is horizontally to the right. In this lens structure, light passes through the linear prism 2 and is displaced from the base 4 to the base top 3, changing the light emitted by the nearby object into relatively parallel light, and the focus is projected to the central area of the retina (macular area) through the entire eyeball refractive system, thereby reducing the pressure of the extraocular muscles on the eyeball wall and supplementing the focusing ability. At the same time, the lens in the linear prism 2 can relieve the tension of the ciliary muscle when looking at nearby objects, and prevent the occurrence and development of accommodation lag.
[0041] Working principle: Please refer to Figure 1-Figure 3 As shown, when in use, the low-contrast lens 1 is used as the distance use area, and its translucent light scattering area 5 scatters the incident light to reduce the elongation of the eye axis caused by the difference in light signals; and the linear prism 2 in the lower half gradually thins from the base 4 to the base top 3, converts the light emitted by the nearby object into parallel light, and accurately focuses it on the central area of the retina, thereby reducing the pressure on the extraocular muscles and the adjustment burden of the ciliary muscles, preventing the myopia from further deepening, and the auxiliary refractive adjustment area 6 realizes an optically smooth transition between the low-contrast lens 1 and the linear prism 2; the central neutral density area 7 balances the incident light intensity of the upper half; the lateral light guiding structure 8 improves the light balance in the near use area; the micro-nano anti-reflection layer 9 improves the overall light transmittance and anti-reflection performance.
[0042] Although the embodiments of the present invention have been shown and described, it is understandable to those skilled in the art that, unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "including" or "comprising" and the like used in the present invention mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.
[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A low-contrast combined with a line of prism myopia prevention and control lenses, characterized in that: include: A low-contrast lens (1), wherein the inner surface of the low-contrast lens (1) is constructed with a semi-transparent light scattering area (5), wherein the semi-transparent light scattering area (5) is a circular area composed of laser micro-engraved particle points distributed in a star shape, wherein the lower half of the low-contrast lens (1) is constructed with a linear prism (2), wherein the linear prism (2) is constructed with a base (4) and a base top (3), wherein the thickness of the linear prism (2) gradually decreases from the base (4) toward the base top (3), and the cutting surface of the linear prism (2) is located on the outer side surface of the low-contrast lens (1).
2. The low-contrast combined with a line prism myopia prevention and control lens according to claim 1, characterized in that: The inner surface of the linear prism (2) is integrated with the inner surface of the low-contrast lens (1), and the outer surface of the linear prism (2) is butted against the low-contrast lens (1) along a horizontal diameter direction to form a whole.
3. The low-contrast combined with a line prism myopia prevention and control lens according to claim 1, characterized in that: The prism degree of the first-line prism (2) is 2.75 to 3.25 prism degrees.
4. The low-contrast combined with a line prism myopia prevention and control lens according to claim 1, characterized in that: An auxiliary refraction adjustment area (6) is provided in the transition area between the low-contrast lens (1) and the linear prism (2); the auxiliary refraction adjustment area (6) is made of a gradient refractive index material.
5. The low-contrast combined with a line prism myopia prevention and control lens according to claim 1, characterized in that: A central neutral density area (7) is provided in the central area of the upper half of the low-contrast lens (1), and the central neutral density area (7) is made of a neutral density material.
6. The low-contrast combined with a line prism myopia prevention and control lens according to claim 1, characterized in that: The outer surface of the line prism (2) is provided with a lateral light guiding structure (8), and the lateral light guiding structure (8) is formed in the form of micro grooves or micro ridges.
7. The low-contrast combined with a line prism myopia prevention and control lens according to claim 1, characterized in that: The inner surface of the low-contrast lens (1) is covered with a micro-nano anti-reflection layer (9), and the micro-nano anti-reflection layer (9) is formed by uniformly distributed nano-scale particles.
8. The low-contrast combined with a line prism myopia prevention and control lens according to claim 1, characterized in that: The lens portion of the linear prism (2) is any one of a concave lens, a convex lens or a plano lens, the upper half of the low-contrast lens (1) is any one of a low-contrast concave lens or a low-contrast plano lens, and the outer shape of the linear prism (2) is any one of an ellipse, a circle, an arc or a semicircle.