Optical homogenization point diffusion lens

Abstract

The invention relates to an optical homogenization point diffusion lens, and belongs to the technical field of point diffusion lenses, the optical homogenization point diffusion lens comprises a lens base layer, lens protection layers are arranged on the front side and the back side of the lens base layer, and the lens protection layers comprise anti-reflection layers arranged on the front side and the back side of the lens base layer; a wear-resistant layer is arranged on the side, away from the lens base layer, of the anti-reflection layer, and an antifouling layer is arranged on the side, away from the anti-reflection layer, of the wear-resistant layer. According to the optical uniformization point diffusion lens, by arranging the anti-reflection layer, light reflection of the surface of the lens base layer can be reduced, more light can penetrate through the lens base layer to reach eyes, therefore, the visual definition is improved, meanwhile, glare caused by reflected light is reduced, and eye fatigue is relieved; the hardness and wear resistance of the surface of the lens base layer are improved, the lens base layer is prevented from being scratched in daily use, and meanwhile the two lens protection layers are arranged, so that the surface of the lens base layer can be protected to the maximum extent.

Description

Technical Field

[0001] The present invention relates to the technical field of point diffusion lenses, in particular to an optically uniform point diffusion lens. Background Art

[0002] Point diffusion lenses are a new type of myopia prevention and control lens designed based on the theory of low retinal contrast. This theory states that high-contrast environments can cause abnormally high retinal signal stimulation, leading to excessive eye axis growth and, in turn, myopia progression. Point diffusion lenses distribute thousands of tiny scattering points across the lens surface, scattering light. This reduces retinal contrast, minimizing stimulation of eye axis growth and ultimately slowing the progression of myopia.

[0003] The Chinese invention patent with announcement number CN118884724A discloses a point diffusion defocus lens that avoids multiple points, which includes: a resin substrate, a plurality of defocus ring belts are arranged on the surface of the resin substrate, the defocus ring belts are composed of regular hexagonal ring belts and multiple circular ring belts surrounding the regular hexagonal ring belts, and each defocus ring belt has concave or convex defocus micro-transmission units distributed in a ring array, wherein the defocus amount of the defocus ring belt gradually decreases from the inside to the outside; a plurality of light diffusion dot matrix units are formed on the rear surface of the resin substrate by laser marking; a plurality of light diffusion discrete units are formed on the front surface of the resin substrate by laser marking, and the light diffusion discrete units and the light diffusion dot matrix units are staggered with each other. This invention forms a defocus ring band through a resin substrate to form a gradual decrease, and then uses laser marking to form staggered light diffusion dot matrix units and light diffusion discrete units on the front and back surfaces to form a point diffusion defocus myopia lens, which ensures the user's visual zone conversion needs, realizes defocus conversion, avoids eye discomfort for myopic users, deepens the degree of myopia, and enhances myopia prevention and control.

[0004] However, during use, the invention does not have a structure that can protect the lens surface. Therefore, when the user needs to clean and wipe the lens surface, it is easy to cause scratches on the lens surface, affecting the user's visual experience. It also affects the anti-myopia effect of the lens and cannot meet production needs. Therefore, an optically uniform point diffusion lens is proposed to solve the above problems. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides an optically uniform point diffusion lens with the advantage of good protective effect. It solves the problem that the existing point diffusion lens does not have a structure that can protect the lens surface, and when the user needs to clean and wipe the lens surface, it is easy to cause scratches on the lens surface, affecting the user's visual experience, and also affecting the anti-myopia effect of the lens.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an optically uniform point diffusion lens, comprising a lens base layer, wherein the front and back surfaces of the lens base layer are both provided with a lens protective layer; The lens protective layer includes an anti-reflection layer arranged on the front and back of the lens base layer, a wear-resistant layer is arranged on the side of the anti-reflection layer away from the lens base layer, and an anti-fouling layer is arranged on the side of the wear-resistant layer away from the anti-reflection layer.

[0007] Furthermore, the thickness of the anti-reflection layer is 384 nanometers, the thickness of the wear-resistant layer is 3 micrometers, and the thickness of the anti-fouling layer is 0.01 micrometers.

[0008] Furthermore, the anti-reflection layer is composed of four layers of anti-reflection films, and the thickness of a single layer of anti-reflection film is 96 nanometers.

[0009] Furthermore, a point diffusion functional layer is provided on the front side of the lens base layer, and a central clear area is provided on the point diffusion functional layer.

[0010] Furthermore, the diameter of the central clear area is 5 mm, and the central clear area is located at the center of the point diffusion functional layer.

[0011] Furthermore, a multifunctional composite optical coating is provided between the point diffusion functional layer and the lens protective layer, and the multifunctional composite optical coating consists of an ultraviolet shielding layer, an intelligent dimming layer and a polarization filter layer.

[0012] Furthermore, the ultraviolet shielding layer is arranged on the side of the lens protective layer close to the point diffusion functional layer, the polarizing filter layer is arranged on the side of the ultraviolet shielding layer away from the lens protective layer, and the intelligent dimming layer is located between the ultraviolet shielding layer and the polarizing filter layer.

[0013] Furthermore, a progressive defocus phase layer is provided between the multifunctional composite optical coating and the point diffusion functional layer, and the thickness of the progressive defocus phase layer is 0.5 mm.

[0014] Compared with the prior art, the present invention provides an optically uniform point diffusion lens, which has the following beneficial effects: 1. The optically uniform point diffusion lens, by providing an anti-reflection layer, can reduce the reflection of light on the lens base surface, allowing more light to pass through the lens base to reach the eyes, thereby improving visual clarity, while reducing glare caused by reflected light and alleviating eye fatigue. By providing a wear-resistant layer, the hardness and wear resistance of the lens base surface are improved, preventing the lens base from being scratched during daily use. By providing an anti-fouling layer, dust, grease, water stains and other pollutants can be prevented from adhering to the lens base surface, making the lens base easier to clean. At the same time, there are two lens protective layers, which can maximize the protection of the lens base surface.

[0015] 2. The optically uniform point diffusion lens, by providing a point diffusion functional layer, causes light to scatter in the point diffusion functional layer, thereby reducing the imaging contrast on the retina and achieving the purpose of controlling the progression of myopia. At the same time, by providing a central clear area, the wearer can obtain clear visual effects when looking at distant and near objects. This solves the problem that existing point diffusion lenses do not have a structure that can protect the lens surface, and when the user needs to clean and wipe the lens surface, it is easy to cause scratches on the lens surface, affecting the user's visual experience, and also affecting the anti-myopia effect of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an exploded view of the structure of an optically uniform point diffusion lens of the present invention; Figure 2 This is a schematic structural diagram of a lens protective layer of an optically uniform point diffusion lens according to the present invention; Figure 3 This is a schematic structural diagram of a point diffusion functional layer of an optically uniform point diffusion lens according to the present invention; Figure 4 This is a schematic structural diagram of a multifunctional composite optical coating for an optically uniform point diffusion lens according to the present invention.

[0017] In the figure: 1. Lens base layer; 2. Point diffusion functional layer; 3. Central clear area; 4. Lens protective layer; 41. Anti-reflection layer; 42. Wear-resistant layer; 43. Anti-fouling layer; 5. Multifunctional composite optical coating; 51. UV shielding layer; 52. Intelligent dimming layer; 53. Polarization filter layer; 6. Progressive defocus phase layer. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figures 1 to 2 In this embodiment, an optically uniform point diffusion lens includes a lens base layer 1, and a lens protective layer 4 is provided on the front and back sides of the lens base layer 1. The lens protective layer 4 includes an anti-reflection layer 41 provided on the front and back sides of the lens base layer 1, and a wear-resistant layer 42 is provided on the side of the anti-reflection layer 41 away from the lens base layer 1, and an anti-fouling layer 43 is provided on the side of the wear-resistant layer 42 away from the anti-reflection layer 41.

[0020] Specifically, the thickness of the anti-reflection layer 41 is 384 nanometers, the thickness of the wear-resistant layer 42 is 3 micrometers, and the thickness of the anti-fouling layer 43 is 0.01 micrometers.

[0021] It should be noted that the anti-reflection layer 41 is composed of four layers of anti-reflection films, and the thickness of a single layer of anti-reflection film is 96 nanometers.

[0022] It should be noted that by providing an anti-reflection layer 41, the reflection of light on the surface of the lens base layer 1 can be reduced, so that more light can pass through the lens base layer 1 to reach the eyes, thereby improving visual clarity, while reducing glare caused by reflected light and alleviating eye fatigue. By providing a wear-resistant layer 42, the hardness and wear resistance of the surface of the lens base layer 1 are improved, and the lens base layer 1 is prevented from being scratched during daily use. By providing an anti-fouling layer 43, pollutants such as dust, grease, and water stains can be prevented from adhering to the surface of the lens base layer 1, making the lens base layer 1 easier to clean.

[0023] See also Figure 1 and Figure 3 In this embodiment, a point diffusion functional layer 2 is provided on the front of the lens base layer 1, and a central clear area 3 is provided on the point diffusion functional layer 2. The diameter of the central clear area 3 is 5 mm, and the central clear area 3 is located at the center of the point diffusion functional layer 2.

[0024] Specifically, the front lens protective layer 4 is fixedly connected to the point diffusion functional layer 2. By setting the point diffusion functional layer 2, light is scattered in the point diffusion functional layer 2, thereby reducing the imaging contrast on the retina and achieving the purpose of controlling the development of myopia. At the same time, by setting the central clear area 3, the wearer can obtain clear visual effects when looking at distant and near objects.

[0025] It should be noted that the point diffusion functional layer 2 utilizes micro-nano processing technology or a special material formulation to form a micron-scale or nano-scale scattering structure on the surface of the lens base layer 1. These structures can cause light to be diffusely reflected or refracted, change the propagation direction of light, and realize light scattering. Compared with directly applying a film on the surface of the lens base layer 1, it can improve the integrity of the lens base layer 1. At the same time, applying a film is more difficult and is extremely likely to cause damage to the surface of the lens base layer 1, and it will also affect the scattering effect.

[0026] See also Figure 1 and Figure 4 In this embodiment, a multifunctional composite optical coating 5 is provided between the point diffusion functional layer 2 and the lens protective layer 4. The multifunctional composite optical coating 5 is composed of an ultraviolet shielding layer 51, an intelligent dimming layer 52 and a polarization filter layer 53.

[0027] Specifically, the ultraviolet shielding layer 51 is arranged on the side of the lens protective layer 4 close to the point diffusion functional layer 2, the polarizing filter layer 53 is arranged on the side of the ultraviolet shielding layer 51 away from the lens protective layer 4, and the intelligent dimming layer 52 is located between the ultraviolet shielding layer 51 and the polarizing filter layer 53.

[0028] It should be noted that the UV shielding layer 51 can reduce the glare and halo caused by ultraviolet rays, making vision clearer and more comfortable, especially in strong outdoor light environments, it can effectively improve visual quality and reduce eye fatigue. Through physical vapor deposition technology, the organic UV absorber is evenly coated on the surface of the lens. This method can accurately control the thickness and composition of the coating, thereby achieving a good UV shielding effect.

[0029] It should be noted that the polarizing filter layer 53 can reduce the impact of strong light reflection on the defocus effect. Through an evaporation process, metal oxide materials are deposited on the lens to form a nanoscale thin film structure, which can achieve the transmission of light in a specific polarization direction and the reflection or absorption of light in other directions. This method can accurately control the thickness and optical properties of the polarizing filter layer 53.

[0030] It should be noted that the smart dimming layer 52 is a photochromic coating made of spiropyran organic compounds. The smart dimming layer 52 is coated on the polarizing filter layer 53. The photochromic coating can automatically adjust the transmittance of the lens according to the light intensity, darkening in strong light to reduce the incident light, and brightening in weak light to ensure sufficient visual clarity. After combining with the polarizing filter layer 53, it can not only effectively block glare, but also adapt to different lighting conditions, providing a more comfortable and clear visual experience.

[0031] See also Figure 1 In this embodiment, a progressive defocus phase layer 6 is provided between the multifunctional composite optical coating 5 and the point diffusion functional layer 2, and the thickness of the progressive defocus phase layer 6 is 0.5 mm.

[0032] Specifically, an injection molding process is adopted to inject the lens material into a mold and mold it under high temperature and high pressure. During the molding process, the lens material will accurately replicate the defocus phase layer structure on the mold surface, thereby forming a predetermined progressive defocus phase layer 6 on the lens. By designing a progressive defocus phase layer 6 on the lens base layer 1, when the eyes look at objects, the central field of vision can be clearly imaged on the retina, while the light of the peripheral field of vision is focused in front of the retina, forming peripheral myopic defocus, sending a signal to the eyeball to stop growing, thereby slowing down the growth of the eye axis and achieving the purpose of controlling the development of myopia.

[0033] The working principle of the above embodiment is: After the staff installs the lens base layer 1 on the frame, the wearer puts on the glasses. At this time, the light is scattered in the point diffusion functional layer 2, which reduces the imaging contrast on the retina. At the same time, there is no scattering structure in the central clear area 3. When the wearer looks at distant and near objects, he can obtain a clear visual effect. When the lens base layer 1 is worn for a long time, a small amount of stains will appear on its surface, and then its surface can be cleaned directly. Due to the effects of the wear-resistant layer 42 and the anti-fouling layer 43, the damage to the lens itself when wiping the lens base layer 1 is reduced.

[0034] The installation method, connection method or setting method disclosed in this embodiment are all common mechanical connection methods, and can be implemented as long as they can achieve their beneficial effects.

[0035] It should be noted that in this article, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0037] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An optically uniform point diffusion lens, comprising a lens base layer (1), characterized in that: The front and back sides of the lens base layer (1) are both provided with a lens protective layer (4); The lens protective layer (4) comprises an anti-reflection layer (41) provided on the front and back sides of the lens base layer (1); a wear-resistant layer (42) is provided on the side of the anti-reflection layer (41) away from the lens base layer (1); and an anti-fouling layer (43) is provided on the side of the wear-resistant layer (42) away from the anti-reflection layer (41).

2. The optically uniform point diffusion lens according to claim 1, characterized in that: The thickness of the anti-reflection layer (41) is 384 nanometers, the thickness of the wear-resistant layer (42) is 3 micrometers, and the thickness of the anti-fouling layer (43) is 0.01 micrometers.

3. The optically uniform point diffusion lens according to claim 1, characterized in that: The anti-reflection layer (41) consists of four layers of anti-reflection films, and the thickness of a single layer of anti-reflection film is 96 nanometers.

4. The optically uniform point diffusion lens according to claim 1, wherein: A point diffusion functional layer (2) is provided on the front surface of the lens base layer (1), and a central clear area (3) is provided on the point diffusion functional layer (2).

5. The optically uniform point diffusion lens according to claim 4, characterized in that: The diameter of the central clear area (3) is 5 mm, and the central clear area (3) is located at the center of the point diffusion functional layer (2).

6. The optically uniform point diffusion lens according to claim 4, characterized in that: A multifunctional composite optical coating (5) is provided between the point diffusion functional layer (2) and the lens protective layer (4), and the multifunctional composite optical coating (5) is composed of an ultraviolet shielding layer (51), an intelligent light-adjusting layer (52), and a polarization filter layer (53).

7. The optically uniform point diffusion lens according to claim 6, characterized in that: The ultraviolet shielding layer (51) is arranged on a side of the lens protection layer (4) close to the point diffusion functional layer (2), the polarization filter layer (53) is arranged on a side of the ultraviolet shielding layer (51) away from the lens protection layer (4), and the intelligent light-adjusting layer (52) is located between the ultraviolet shielding layer (51) and the polarization filter layer (53).

8. The optically uniform point diffusion lens according to claim 6, characterized in that: A progressive defocus phase layer (6) is provided between the multifunctional composite optical coating (5) and the point diffusion functional layer (2), and the thickness of the progressive defocus phase layer (6) is 0.5 mm.

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