Ophthalmic lens, method for manufacturing ophthalmic lens, and frame eyeglasses

Abstract

The invention relates to an ophthalmic lens, a manufacturing method of the ophthalmic lens and frame glasses. The ophthalmic lens comprises a plurality of micro-lens units, the area where the micro-lens units are located is a micro-lens area, the ophthalmic lens further comprises a plurality of light scattering units and a plurality of light diffraction units, the size of the light scattering units is smaller than that of the micro-lens units, and the size of the light diffraction units is smaller than that of the light scattering units. The light scattering units are used for scattering light rays entering the eyes to reduce the retina contrast, the light diffraction units are used for diffracting the light rays entering the eyes to reduce the retina contrast, and the retina contrast reduction degree of the light scattering units is larger than that of the light diffraction units. And a light scattering unit and / or a light diffraction unit are / is arranged in the non-micro-lens area adjacent to at least part of the micro-lens area. Therefore, while myopia development is effectively controlled, good visual experience of a wearer can be guaranteed, and a better vision correction and myopia prevention and control solution can be provided for a myopia patient.

Description

Technical Field

[0001] The present disclosure relates to the technical field of eyeglasses, and more particularly, to an ophthalmic lens, a method for manufacturing an ophthalmic lens, and frame glasses. Background Art

[0002] Today's market has increasing requirements for myopia control glasses.

[0003] An excellent pair of myopia control glasses should provide the wearer with good visual comfort and visual quality, effective myopia control effect, while also maintaining a normal and good appearance when wearing the glasses.

[0004] Therefore, it is necessary to develop a completely new eyeglass lens with a more optimized optical structure. Summary of the invention

[0005] A technical problem to be solved by the present disclosure is how to develop a spectacle lens with a more optimized optical structure.

[0006] According to a first aspect of the present disclosure, an ophthalmic lens is provided, wherein the ophthalmic lens comprises a plurality of microlens units, the area where the microlens units are located is a microlens area, the microlens area has a first refractive power, and the first refractive power has a positive first additional focal power relative to the prescription refractive power, the ophthalmic lens further comprises a plurality of light scattering units and a plurality of light diffraction units, the size of the light scattering unit is smaller than the size of the microlens unit, the size of the light diffraction unit is smaller than the size of the light scattering unit, the light scattering unit is used to scatter incident light to reduce retinal contrast, and the light diffraction unit Used to diffract incoming light to reduce retinal contrast, the multiple light scattering units reduce retinal contrast to a greater extent than the multiple light diffraction units, the light scattering units and / or the light diffraction units are arranged in a non-microlens area adjacent to at least part of the microlens area, the non-microlens area has a second refractive power, the second refractive power is equal to the prescription refractive power, or the second refractive power has a negative second additional focal length relative to the prescription refractive power, or the second refractive power has a positive third additional focal length relative to the prescription refractive power, and the third additional focal length is less than the first additional focal length.

[0007] Optionally, the multiple microlens units are scattered in a peripheral defocus zone outside the central optical zone, the multiple light scattering units are scattered in the peripheral defocus zone and the lens edge zone, the lens edge zone is the area from the end of the peripheral defocus zone to the edge of the lens, and the multiple light diffraction units are scattered in the peripheral defocus zone and the lens edge zone.

[0008] Optionally, the plurality of light diffraction units are also dispersed in the central optical zone.

[0009] Optionally, the multiple microlens units are distributed on multiple rays starting from the center of the ophthalmic lens, the multiple rays are evenly distributed on the ophthalmic lens, the microlens units on the same ray are connected to each other, the multiple microlens units are arranged in a rotationally symmetrical ring shape, the microlens units on several annular bands close to the central optical zone and on different rays are connected to each other, and the microlens units on annular bands outside the several annular bands and on different rays are spaced apart from each other.

[0010] Optionally, for at least part of the first microlens regions in the annular zones outside the plurality of annular zones, the light scattering unit and the light diffraction unit are provided in each of the first microlens regions and its adjacent non-microlens region.

[0011] Optionally, the spacing between the light scattering units is determined based on the size and shape complexity of the light scattering units, and the spacing between the light scattering units is positively correlated with the size and shape complexity of the light scattering units, respectively.

[0012] Optionally, the spacing between the light scattering units is 1 to 5 times the diameter of the light scattering units.

[0013] Optionally, the spacing between the light scattering units is 0.29 to 3.18 times the sum of the perimeters of the light scattering units, or is 0.29 to 3.18 times the sum of the side lengths of the light scattering units.

[0014] Optionally, the size of the light scattering unit is negatively correlated with the distance between the light scattering unit and the center of the lens, and / or the spacing between the light scattering units is positively correlated with the distance between the light scattering unit and the center of the lens.

[0015] Optionally, the intervals between different light scattering units in the plurality of light scattering units fluctuate within a predetermined value range, so that the plurality of light scattering units form an irregular distribution.

[0016] Optionally, the microlens unit has a smooth and transparent surface; and / or the light scattering unit is transparent or translucent; and / or the light diffraction unit is transparent, translucent or opaque.

[0017] Optionally, the size of the microlens unit is 0.6 mm to 2.0 mm, and / or the size of the light scattering unit is 100 μm to 400 μm, and / or the size of the light diffraction unit is less than or equal to 75000 nm.

[0018] Optionally, the light scattering unit is in the shape of a dot with a rough surface, the size of the light scattering unit is 100μm to 200μm, and the spacing between two adjacent light scattering units is 150μm to 250μm; or the light scattering unit is in the shape of a cross, the size of the light scattering unit is 100μm to 200μm, the line width of the cross does not exceed 80μm, and the spacing between two adjacent light scattering units is 150μm to 400μm; or the light scattering unit is a pattern composed of continuous or discontinuous fine lines, and the width of the fine lines constituting the pattern is 80μm to 150μm.

[0019] Optionally, the light diffraction unit is in a dot shape or a cross shape, the size of the light diffraction unit is 30000nm to 50000nm, and the distance between two adjacent light diffraction units is 50000nm to 150000nm.

[0020] Optionally, the density of the light diffraction units is 50 to 2500 per square millimeter.

[0021] Optionally, the microlens unit is located on the front surface of the ophthalmic lens; and / or the light scattering unit is located on the back surface of the ophthalmic lens or inside the coating layer or lens material; and / or the light diffraction unit is located on the back surface of the ophthalmic lens or inside the coating layer or lens material.

[0022] According to a second aspect of the present disclosure, an ophthalmic lens is provided, wherein the ophthalmic lens comprises a plurality of microlens units, the area where the microlens units are located is a microlens area, the microlens area has a first refractive power, and the first refractive power has a positive first additional focal length relative to the prescription refractive power; the ophthalmic lens further comprises a plurality of light diffraction units, the size of the light diffraction units is smaller than the size of the microlens units, the light diffraction units are used to diffract incident light to reduce retinal contrast, the light diffraction units are arranged in a non-microlens area adjacent to at least part of the microlens area, the non-microlens area has a second refractive power, the second refractive power is equal to the prescription refractive power, or the second refractive power has a negative second additional focal length relative to the prescription refractive power, or the second refractive power has a positive third additional focal length relative to the prescription refractive power, and the third additional focal length is less than the first additional focal length.

[0023] Optionally, the multiple microlens units are scattered in a peripheral defocus zone outside the central optical zone, and the multiple light diffraction units are scattered in the peripheral defocus zone and a lens edge zone, and the lens edge zone is the area from the end of the peripheral defocus zone to the edge of the lens.

[0024] Optionally, the plurality of light diffraction units are also dispersed in the central optical zone.

[0025] Optionally, the multiple microlens units are distributed on multiple rays starting from the center of the ophthalmic lens, the multiple rays are evenly distributed on the ophthalmic lens, the microlens units on the same ray are connected to each other, the multiple microlens units are arranged in a rotationally symmetrical ring shape, the microlens units on several annular bands close to the central optical zone and on different rays are connected to each other, and the microlens units on annular bands outside the several annular bands and on different rays are spaced apart from each other.

[0026] Optionally, for at least part of the first microlens regions in the annular zones outside the plurality of annular zones, the light diffraction unit is provided in each of the first microlens regions and its adjacent non-microlens region.

[0027] Optionally, the microlens unit has a smooth and transparent surface; and / or the light diffraction unit is transparent, translucent or opaque.

[0028] Optionally, the size of the microlens unit is 0.6 mm to 2.0 mm, and / or the size of the light diffraction unit is less than or equal to 75000 nm.

[0029] Optionally, the light diffraction unit is in a dot shape or a cross shape, the size of the light diffraction unit is 30000nm to 50000nm, and the distance between two adjacent light diffraction units is 50000nm to 150000nm.

[0030] Optionally, the density of the light diffraction units is 50 to 2500 per square millimeter.

[0031] Optionally, the microlens unit is located on the front surface of the ophthalmic lens; and / or the light diffraction unit is located on the back surface of the ophthalmic lens or inside a coating layer or lens material.

[0032] According to a third aspect of the present disclosure, an ophthalmic lens is provided, wherein the ophthalmic lens comprises a plurality of light scattering units and a plurality of light diffraction units, the size of the light scattering units is smaller than the size of the microlens units, the size of the light diffraction units is smaller than the size of the light scattering units, the light scattering units are used to scatter incident light to reduce retinal contrast, the light diffraction units are used to diffract incident light to reduce retinal contrast, and the plurality of light scattering units reduce retinal contrast to a greater extent than the plurality of light diffraction units.

[0033] Optionally, the plurality of light scattering units and the plurality of light diffraction units are respectively dispersed in lens regions outside the central optical zone.

[0034] Optionally, the plurality of light diffraction units are also dispersed in the central optical zone.

[0035] Optionally, the spacing between the light scattering units is determined based on the size and shape complexity of the light scattering units, and the spacing between the light scattering units is positively correlated with the size and shape complexity of the light scattering units, respectively.

[0036] Optionally, the spacing between the light scattering units is 1 to 5 times the diameter of the light scattering units.

[0037] Optionally, the spacing between the light scattering units is 0.29 to 3.18 times the sum of the perimeters of the light scattering units, or is 0.29 to 3.18 times the sum of the side lengths of the light scattering units.

[0038] Optionally, the size of the light scattering unit is negatively correlated with the distance between the light scattering unit and the center of the lens, and / or the spacing between the light scattering units is positively correlated with the distance between the light scattering unit and the center of the lens.

[0039] Optionally, the intervals between different light scattering units in the plurality of light scattering units fluctuate within a predetermined value range, so that the plurality of light scattering units form an irregular distribution.

[0040] Optionally, the light scattering unit is transparent or translucent; and / or the light diffraction unit is transparent, translucent or opaque.

[0041] Optionally, the size of the light scattering unit is 100 μm to 400 μm, and / or the size of the light diffraction unit is less than or equal to 75000 nm.

[0042] Optionally, the light scattering unit is in the shape of a dot with a rough surface, the size of the light scattering unit is 100μm to 200μm, and the spacing between two adjacent light scattering units is 150μm to 250μm; or the light scattering unit is in the shape of a cross, the size of the light scattering unit is 100μm to 200μm, the line width of the cross does not exceed 80μm, and the spacing between two adjacent light scattering units is 150μm to 400μm; or the light scattering unit is a pattern composed of continuous or discontinuous fine lines, and the width of the fine lines constituting the pattern is 80μm to 150μm.

[0043] Optionally, the light diffraction unit is in a dot shape or a cross shape, the size of the light diffraction unit is 30000nm to 50000nm, and the distance between two adjacent light diffraction units is 50000nm to 150000nm.

[0044] Optionally, the density of the light diffraction units is 50 to 2500 per square millimeter.

[0045] Optionally, the light scattering unit is located on the back surface of the ophthalmic lens or in the coating layer or lens material; and / or the light diffraction unit is located on the back surface of the ophthalmic lens or in the coating layer or lens material.

[0046] According to a fourth aspect of the present disclosure, an ophthalmic lens is provided, wherein the ophthalmic lens comprises a plurality of microlens units, the area where the microlens units are located is a microlens area, the microlens area has a first refractive power, and the first refractive power has a positive first additional focal length relative to the prescription refractive power, the ophthalmic lens also comprises a plurality of light scattering units, the size of the light scattering units is smaller than the size of the microlens units, the light scattering units are used to scatter incident light to reduce retinal contrast, the light scattering units are arranged in a non-microlens area adjacent to at least part of the microlens area, the non-microlens area has a second refractive power, the second refractive power is equal to the prescription refractive power, or the second refractive power has a negative second additional focal length relative to the prescription refractive power, or the second refractive power has a positive third additional focal length relative to the prescription refractive power, and the third additional focal length is less than the first additional focal length.

[0047] Optionally, the multiple microlens units are scattered in a peripheral defocus zone outside the central optical zone, and the multiple light scattering units are scattered in the peripheral defocus zone and a lens edge zone, and the lens edge zone is the area from the end of the peripheral defocus zone to the edge of the lens.

[0048] Optionally, the multiple microlens units are distributed on multiple rays starting from the center of the ophthalmic lens, the multiple rays are evenly distributed on the ophthalmic lens, the microlens units on the same ray are connected to each other, the multiple microlens units are arranged in a rotationally symmetrical ring shape, the microlens units on several annular bands close to the central optical zone and on different rays are connected to each other, and the microlens units on annular bands outside the several annular bands and on different rays are spaced apart from each other.

[0049] Optionally, for at least part of the first microlens regions in the annular zones outside the plurality of annular zones, the light scattering unit is provided in each of the first microlens regions and its adjacent non-microlens region.

[0050] Optionally, the spacing between the light scattering units is determined based on the size and shape complexity of the light scattering units, and the spacing between the light scattering units is positively correlated with the size and shape complexity of the light scattering units, respectively.

[0051] Optionally, the spacing between the light scattering units is 1 to 5 times the diameter of the light scattering units.

[0052] Optionally, the spacing between the light scattering units is 0.29 to 3.18 times the sum of the perimeters of the light scattering units, or is 0.29 to 3.18 times the sum of the side lengths of the light scattering units.

[0053] Optionally, the size of the light scattering unit is negatively correlated with the distance between the light scattering unit and the center of the lens, and / or the spacing between the light scattering units is positively correlated with the distance between the light scattering unit and the center of the lens.

[0054] Optionally, the intervals between different light scattering units in the plurality of light scattering units fluctuate within a predetermined value range, so that the plurality of light scattering units form an irregular distribution.

[0055] Optionally, the microlens unit has a smooth and transparent surface; and / or the light scattering unit is transparent or translucent.

[0056] Optionally, the size of the microlens unit is 0.6 mm to 2.0 mm, and / or the size of the light scattering unit is 100 μm to 400 μm.

[0057] Optionally, the light scattering unit is in the shape of a dot with a rough surface, the size of the light scattering unit is 100μm to 200μm, and the spacing between two adjacent light scattering units is 150μm to 250μm; or the light scattering unit is in the shape of a cross, the size of the light scattering unit is 100μm to 200μm, the line width of the cross does not exceed 80μm, and the spacing between two adjacent light scattering units is 150μm to 400μm; or the light scattering unit is a pattern composed of continuous or discontinuous fine lines, and the width of the fine lines constituting the pattern is 80μm to 150μm.

[0058] Optionally, the microlens unit is located on the front surface of the ophthalmic lens; and / or the light scattering unit is located on the back surface of the ophthalmic lens or inside a coating layer or lens material.

[0059] According to a fifth aspect of the present disclosure, a method for manufacturing an ophthalmic lens is provided, comprising: respectively manufacturing a plurality of microlens units, a plurality of light scattering units, and a plurality of light diffraction units in the lens, wherein the size of the light scattering unit is smaller than the size of the microlens unit, the size of the light diffraction unit is smaller than the size of the light scattering unit, the light scattering unit is used to scatter incident light to reduce retinal contrast, the light diffraction unit is used to diffract incident light to reduce retinal contrast, the plurality of light scattering units reduce retinal contrast to a greater extent than the plurality of light diffraction units, and the microlens units have a plurality of light scattering units. The area is a microlens area, the microlens area has a first refractive power, and the first refractive power has a positive first additional focal power relative to the prescription refractive power. The light scattering unit and / or the light diffraction unit is arranged in a non-microlens area adjacent to at least part of the microlens area, and the non-microlens area has a second refractive power, which is equal to the prescription refractive power, or the second refractive power has a negative second additional focal power relative to the prescription refractive power, or the second refractive power has a positive third additional focal power relative to the prescription refractive power, and the third additional focal power is less than the first additional focal power.

[0060] According to a sixth aspect of the present disclosure, a method for manufacturing an ophthalmic lens is provided, comprising: making a plurality of microlens units and a plurality of light diffraction units in the lens, wherein the size of the light diffraction unit is smaller than the size of the microlens unit, the light diffraction unit is used to diffract incident light to reduce retinal contrast, the area where the microlens unit is located is a microlens area, the microlens area has a first refractive power, and the first refractive power has a positive first additional focal length relative to the prescription refractive power, the light diffraction unit is arranged in a non-microlens area adjacent to at least part of the microlens area, the non-microlens area has a second refractive power, the second refractive power is equal to the prescription refractive power, or the second refractive power has a negative second additional focal length relative to the prescription refractive power, or the second refractive power has a positive third additional focal length relative to the prescription refractive power, and the third additional focal length is less than the first additional focal length.

[0061] According to a seventh aspect of the present disclosure, a method for manufacturing an ophthalmic lens is provided, comprising: making a plurality of light scattering units and a plurality of light diffraction units in the lens, wherein the size of the light scattering unit is smaller than the size of the microlens unit, the size of the light diffraction unit is smaller than the size of the light scattering unit, the light scattering unit is used to scatter incident light to reduce retinal contrast, the light diffraction unit is used to diffract incident light to reduce retinal contrast, and the plurality of light scattering units reduce retinal contrast to a greater extent than the plurality of light diffraction units.

[0062] According to an eighth aspect of the present disclosure, a method for manufacturing an ophthalmic lens is provided, comprising: making a plurality of microlens units and a plurality of light scattering units in the lens, wherein the size of the light scattering unit is smaller than the size of the microlens unit, the light scattering unit is used to scatter incident light to reduce retinal contrast, the area where the microlens unit is located is a microlens area, the microlens area has a first refractive power, and the first refractive power has a positive first additional focal length relative to the prescription refractive power, the light scattering unit is arranged in a non-microlens area adjacent to at least part of the microlens area, the non-microlens area has a second refractive power, the second refractive power is equal to the prescription refractive power, or the second refractive power has a negative second additional focal length relative to the prescription refractive power, or the second refractive power has a positive third additional focal length relative to the prescription refractive power, and the third additional focal length is less than the first additional focal length.

[0063] According to the ninth aspect of the present disclosure, a pair of frame glasses is provided, on which is provided an ophthalmic lens according to any one of the first to fourth aspects, or an ophthalmic lens manufactured by the method described in any one of the fifth to eighth aspects.

[0064] Therefore, the ophthalmic lens disclosed in the present invention organically combines various optical effects such as defocus, light scattering and light diffraction through a unique multi-level microstructure design, so that while effectively controlling the development of myopia, it can also ensure a good visual experience for the wearer, thereby providing a better vision correction and myopia prevention and control solution for myopic patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components in the exemplary embodiments of the present disclosure.

[0066] Figure 1 A schematic diagram of the distribution of microlens units on an ophthalmic lens according to at least one embodiment of the present disclosure is shown.

[0067] Figure 2 A schematic structural diagram of an ophthalmic lens according to at least one embodiment of the present disclosure is shown.

[0068] Figure 3 A schematic structural diagram of an ophthalmic lens according to at least another embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0069] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0070] With the widespread use of electronic devices in modern society and changes in people's eye habits, the incidence of myopia has been rising year by year, becoming an important issue affecting the public's vision health.

[0071] The principles of myopia control through optical intervention can be divided into two main categories.

[0072] 1. Optical Defocus Theory

[0073] Professor Earl Smith's rhesus monkey experiment showed that when the retina is stimulated by hyperopic defocus signals, it will induce the growth of the eye axis and myopia. The principle is that when there is hyperopic defocus on the retina, the eye will receive a signal and think that the object is imaged behind the retina. In order to make the image fall clearly on the retina, the eye will activate a series of physiological mechanisms to promote the growth of the eye axis, and excessive growth of the eye axis will lead to a deepening of myopia. Conversely, if the periphery of the retina is stimulated by myopic defocus signals, it will inhibit the growth of the eye axis and slow down the growth of myopia.

[0074] Based on the basic principles of optical defocus and eye development, a variety of branch principles and corresponding products are derived.

[0075] a. Peripheral defocus principle

[0076] Professor Earl Smith's further research found that the periphery of the retina is more sensitive to defocus signals. Therefore, various lenses with additional focal length can be used to focus part of the light in front of the peripheral area of ​​the retina. During the growth and development of the eyeball, the part of the retina that controls the growth of the eye axis will actively look for myopic defocus signals in front of the retina, generate a force that pulls the retina forward, provide a deceleration signal for the growth of the eye axis, inhibit the backward growth of the eyeball, and thus control myopia.

[0077] b. Regulation hysteresis principle

[0078] Under normal circumstances, when the eye looks at close objects, the lens should increase its refractive power to ensure clear imaging, but the lag in accommodation prevents the lens from adjusting to the appropriate refractive state in time, resulting in hyperopic defocus on the retina from time to time. This hyperopic defocus is considered to be one of the important factors that stimulate the elongation of the eye axis. Bifocal lenses set a positive power area under the lens, while progressive lenses gradually increase the positive power in the lower or peripheral area of ​​the lens, so that the eyes can focus more easily when using the eyes at close range, reduce the degree of accommodation lag, and thus reduce the stimulation of hyperopic defocus on the eye axis, thereby slowing down the progression of myopia. For example, in some studies on myopia in children, it was observed that after wearing progressive lenses, the accommodation response when using the eyes at close range was more accurate and the growth rate of the eye axis was slowed down, indicating that this intervention method has a certain regulatory effect on the myopia development mechanism related to accommodation lag.

[0079] c. Chromatic Aberration Theory

[0080] The eyeball has longitudinal chromatic aberration (LCA), which means that light of different wavelengths will focus at different positions when passing through the optical system. In the human eye, short-wavelength light (such as blue light) focuses further in front of the retina than long-wavelength light (such as red light), resulting in a certain defocus effect. The significance of this defocus effect for myopia control is that it can affect the growth and development process of the eyeball. Under normal circumstances, the eyeball will adjust according to the imaging situation on the retina to maintain clear vision. If the image on the retina is always in a defocused state, the growth of the eyeball will be inhibited to a certain extent, thereby slowing the development of myopia.

[0081] 2. Contrast Theory

[0082] Professor Jay Neitz proposed that when the contrast of retinal imaging is changed by special means (such as wearing specific optical lenses, etc.), it will affect the signal transmission in the retina and visual pathway. The nerve cells on the retina will perceive this contrast change and transmit relevant signals to the brain, which in turn regulates the endocrine and neural signal pathways related to eye growth. This regulation may change the speed and direction of eye growth.

[0083] From the basic principles of contrast theory and eye development, a variety of branch principles and corresponding products are derived.

[0084] a. Fuzzy theory

[0085] Studies have found that when the retinal image is highly blurred, form deprivation will occur, leading to abnormal elongation of the eye axis, which in turn induces myopia. However, other researchers have found that when the retinal image is highly blurred and strong light is given, it will induce high hyperopia. This suggests that controlling the degree of form deprivation may be able to achieve the effect of adjusting the progression of myopia.

[0086] b. Illumination theory

[0087] Higher light intensity may slow myopia progression by increasing retinal dopamine activity.

[0088] Animal studies have found that normal animals exposed to low light levels (50 lux) can develop myopia, while at higher light intensities (such as 15,000-25,000 lux), the myopia and axial elongation caused by monocular form deprivation in animals will be reduced. This may be because higher light intensities increase retinal dopamine activity, and its action pathway may be through the D2 receptor pathway, thereby changing gene expression in the retina and reducing the signal that causes axial elongation.

[0089] Therefore, promoting outdoor activities is a cheap and effective way to effectively control myopia.

[0090] c. Reduce contrast theory

[0091] A high-contrast visual environment may over-stimulate the eyeball and cause the eye axis to elongate, thereby promoting the development of myopia. However, by appropriately reducing the contrast information of the retina through specific means, the corresponding cone and rod cell On pathways can be activated and the Off pathways can be inhibited, thereby providing a signal to inhibit the growth of the eye axis and delay the progression of myopia.

[0092] Recently, some researchers have made a unified explanation for the above principle. It can be understood that the retina senses contrast signals and activates the corresponding pathways, while at the same time, it senses defocus signals and determines whether the growth of the eye axis should be accelerated or inhibited.

[0093] At present, there are many methods and products for myopia control on the market, which may utilize one or more of the above principles. Among them, myopia control glasses have received widespread attention as a convenient and inexpensive means of vision correction and myopia prevention and control. There are mainly two types of existing myopia control glasses. One is myopia control glasses with a multi-point microlens array, which utilizes the defocus principle. All kinds of multi-point microlens array lenses have certain myopia control capabilities, but the effects are uneven, which may be related to whether the arrangement, density, position and other designs of the defocus design can effectively activate the retinal pathway. The other type of myopia control glasses with light scattering points reduces the retinal contrast by scattering the incoming light, thereby effectively activating the retinal pathway and delaying the deepening of myopia, but there are also many shortcomings, such as the poor visual effect of light scattering glasses after wearing, and affecting the wearer's appearance, thereby reducing the wearer's willingness to wear, and even suffering discrimination or bullying.

[0094] In view of the above, the present disclosure proposes an ophthalmic lens for myopia control.

[0095] The ophthalmic lens disclosed herein organically combines multiple optical effects such as defocus, light scattering and light diffraction through a unique multi-level microstructure design, so that while effectively controlling the progression of myopia, it can also ensure a good visual experience for the wearer, thereby providing a better vision correction and myopia prevention and control solution for myopic patients.

[0096] In some embodiments, the ophthalmic lens of the present disclosure comprises at least three different levels of microscopic optical structures. In order of size from large to small, the three levels of microscopic optical structures are: microlenses, light scattering structures, and light diffraction structures.

[0097] First-level microscopic optical structure

[0098] The first-level microscopic optical structure is a microlens (i.e., a defocusing and focusing structure).

[0099] A single microlens may be referred to as a microlens unit.

[0100] A plurality of microlens units may be arranged on the surface or in a specific internal area of ​​the ophthalmic lens. The surface may be the front surface or the back surface. The specific internal area may refer to the inside of the lens material or the bottom of the film layer. That is, a plurality of microlens units may be arranged in the inside of the ophthalmic lens in a form similar to an interlayer or an inclusion.

[0101] As the largest microscopic optical structural unit, the size and distribution of the microlens unit have been carefully designed.

[0102] The working principle of the microlens unit is based on the myopic defocus theory.

[0103] When light passes through the lens, the microlens unit can focus part of the light in front of the retina. By properly setting the microlens array in the peripheral area of ​​the ophthalmic lens, the peripheral light is focused in front of the retina to form a myopia defocus signal area, inhibiting further elongation of the eye axis, thereby achieving the purpose of controlling the development of myopia.

[0104] When designing a lens including multiple microlens units, the size, addition power and distribution of the microlens units must be carefully designed.

[0105] In order to ensure that myopic defocus can be produced normally, the microlens unit should have a certain area. At the same time, the microlens unit should not be too large. An oversized microlens unit may form a clear image, increase image jumps, and interfere with vision. In addition, the microlens unit should also have a certain positive addition power. Clinical studies have shown that excessive or insufficient addition power will damage the effect of myopia control. At present, most of the products that have been proven to be effective by clinical data have addition powers controlled within the range of +3.00D to +5.00D. The various value ranges described here and elsewhere in the text can include two endpoint values.

[0106] At the same time, to ensure visual quality, gaps should be set between microlenses to ensure the wearer's willingness to wear them. Among them, continuous gaps can provide the wearer with clear and continuous corrected vision, so it is necessary to study how to arrange the microlenses more reasonably. However, no matter how the arrangement of microlenses is designed, the eyes can feel the existence of microlenses and microlens gaps when wearing them. This is the main source of difficulty in adapting to microlens lenses, and it is also the reason why lenses on the market dare not overly reduce the central correction area of ​​the lens.

[0107] There are many types of microlenses on the market, and the quality varies. However, the advantage is that wearers can choose and try them based on a lot of clinical data and personal characteristics, and they can always choose effective products after multiple attempts. In addition, since microlenses do not have light reflection characteristics, they are not noticeable in appearance when worn, and will not have a negative impact on the wearer's appearance.

[0108] Second level microscopic optical structure

[0109] The second-level microscopic optical structure is a light scattering structure.

[0110] A single light scattering structure may be referred to as a light scattering unit (or a light scattering point).

[0111] The size of the light scattering point unit is smaller than that of the microlens. When light passes through these light scattering points, the originally concentrated and regularly propagated light will be scattered, changing the propagation direction and distribution state of the light.

[0112] When designing lenses that include light scattering units, the size, shape, surface and distribution density of the light scattering units must be carefully designed. The light scattering units should ensure that the light is dispersed as evenly as possible, so that the light entering the eye is uniform and soft, and eliminates problems such as bright noise and flare. More importantly, the control of the scattering intensity should be very cautious. Studies have shown that excessive blur may lead to form deprivation, seriously interfere with the normal development of the eyes, and then cause high myopia or high hyperopia. The shape, surface and distribution density of the light scattering points have different effects on this.

[0113] Well-designed lenses with light scattering units can reduce retinal contrast in a gentle way, activate the electrochemical pathways of retinal cells, and thus slow the progression of myopia. At the same time, they can make the light entering the eye uniform and soft, without obvious blocks and boundaries, reduce the stimulation of strong light to the eyes, especially in complex lighting environments (such as direct strong light, backlight, etc.), and help improve visual comfort. But at the same time, poorly designed lenses with light scattering units will have obvious light reflection characteristics that will affect the wearer's appearance, making others aware that the wearer's glasses have strange characteristics; or the size and shape of the light scattering points may make them easily noticeable to the human eye at close range, and the wearer will have a noticeable sense of grain when wearing the glasses to see objects, which will lead to a decrease in the wearer's willingness to wear glasses, thereby making the myopia management ability ineffective.

[0114] Therefore, the size, shape, distribution density and layout of the light scattering units on the entire lens also need to be designed according to the visual perception characteristics of the human eye. For example, different density gradients can be used in different areas of the lens (central area, peripheral area, etc.) so that the light can be reasonably scattered and adjusted within different viewing angles, while providing a reasonable degree of contrast reduction and minimizing the impact on the wearing appearance.

[0115] The third level microscopic optical structure

[0116] The third-level microscopic optical structure is the light diffraction structure.

[0117] A single light diffraction structure may be referred to as a light diffraction unit (or a light diffraction point).

[0118] The light diffraction unit is the smallest microscopic structure in the lens.

[0119] The optical diffraction unit utilizes the diffraction effect of light to perform unique optical functions.

[0120] Light diffraction refers to the phenomenon that when light encounters an obstacle or passes through a specific microscopic structure, it will bypass the obstacle and form alternating light and dark diffraction stripes behind it. The disturbance of the light is highly correlated with the size of the obstacle.

[0121] In the ophthalmic lens disclosed in the present invention, the light is diffracted by a light diffraction unit of a specific size and its microstructure design to form a small disturbance. A large number of diffraction disturbances can also reduce the visual contrast. At the same time, this diffraction disturbance is relatively slight and not easily perceived by the human eye, and hardly affects the normal visual effect. At the same time, the light diffraction unit generates very little reflected light, so that the wearer has almost no difference in appearance from wearing ordinary glasses.

[0122] But at the same time, since the design of the light diffraction unit requires the coordinated action of extremely small and numerous microstructures, the processing is difficult and is limited by principle, the impact on the overall optical effect is limited. If one hopes to rely solely on light diffraction units for myopia control, the number of light diffraction units required will exceed the upper limit of design and process capabilities.

[0123] The following table shows the advantages and disadvantages of the three individual designs: microlens design, light scattering design, and light diffraction design.

[0124]

[0125]

[0126] The present invention reasonably matches the above three microscopic optical structures based on different principles to make up for each other's shortcomings, achieve a composite enhanced myopia control effect, and greatly improve the problem of poor appearance when wearing glasses.

[0127] Specifically, the main problem with microlens design is the sense of fragmentation and jumping in the field of vision. The microlens area has a refractive power that is different from the prescribed refractive power and has a positive additional focal length relative to the prescribed refractive power. The non-microlens area generally has the prescribed refractive power, which makes the microlens area blurry and the non-microlens area clear, and thus there is a clear boundary between the microlens area and the non-microlens area, which is the reason for the sense of fragmentation and jumping in the field of vision. The sense of fragmentation and jumping means that the human eye can clearly perceive the area where the microlens exists and the area where the microlens does not exist. No matter what kind of multi-point micro-transparent lens, there will be obvious visual jumping when the eyeball moves.

[0128] On the basis of the microlens design, by adding light scattering units and / or light diffraction units to the lens, especially by providing light scattering units and / or light diffraction units in the non-microlens area adjacent to the microlens area (i.e., using light scattering units and / or light diffraction units to surround the microlens area), the contrast difference between the microlens area and the non-microlens area can be reduced. For example, the boundary between the two areas can be weakened to below the range that can be detected by the human eye. Therefore, the sense of separation and jumping in the microlens design can be significantly optimized, making it easier for the wearer to adapt. At the same time, due to the small size of the light scattering unit and the light diffraction unit, the actual area occupied is very small, so the impact on the defocus characteristics of the microlens is very small.

[0129] In order to address the two main problems of graininess and ugly appearance in light scattering design, the introduction of light diffraction units can take on part of the contrast reduction task of the light scattering units, so that the light scattering units can be designed to be smaller and sparser, thereby effectively reducing the stray light and reflected light caused by the light scattering units, making the light scattering units less detectable to the naked eye, and the visual contrast of the wearer is evenly reduced but there is no graininess, and the appearance is almost the same as that of ordinary glasses.

[0130] The light diffraction unit only provides auxiliary optimization and does not assume the key myopia control performance. The function of delaying myopia progression is mainly provided by microlenses and light scattering units. Therefore, the number of light diffraction units and the strength of contrast reduction are not high, which can solve the problems of weak contrast reduction ability and high processing difficulty in light diffraction design.

[0131] It can be seen that for myopia control itself, a reasonable combination of lenses with these three microscopic optical structures can fully activate the retinal signal pathway through contrast signals, and continuously guide the direction of axial development through appropriate defocus signals, which can play a compound reinforcing role in the effect of myopia control.

[0132] In general, the distribution of these three microscopic optical structures follows strict optical laws and human visual models, and they work together to form an organic optical system with the multi-level microstructure of the entire lens, serving the three core goals of effective myopia control, good visual experience, and good appearance in an all-round way. Moreover, these three levels of microscopic optical structures are not simply superimposed on the lens, but through precise optical design and manufacturing processes, they work together and influence each other to achieve precise control of light, thereby achieving ideal myopia control effects and excellent visual quality.

[0133] The following is a further exemplary description of the details of the ophthalmic lens disclosed herein.

[0134] The ophthalmic lens of the present disclosure includes a plurality of microlens units, a plurality of light scattering units, and a plurality of light diffraction units.

[0135] Microlens unit

[0136] The area where the microlens unit is located is the microlens area. The microlens area has a first refractive power, and the first refractive power has a positive first additional focal power relative to the prescribed refractive power. The range of the first additional focal power may be, for example, +3.00D to +5.00D.

[0137] The area of ​​the ophthalmic lens where no lenticular elements are provided may be referred to as a non-lenticular area.

[0138] The non-microlens area has a second refractive power. The second refractive power may be equal to the prescribed refractive power. Alternatively, the second refractive power may also have a negative second additional focal power relative to the prescribed refractive power. Alternatively, the second refractive power may also have a positive third additional focal power relative to the prescribed refractive power, and the third additional focal power is less than the first additional focal power.

[0139] From a visual perspective, the imaging clarity of the microlens area is lower than that of the non-microlens area.

[0140] It should be understood that the microlens area in the present disclosure refers to the area in the lens that is directly opposite to the microlens unit, including the entire area from the front surface of the lens to the back surface of the lens, and the microlens unit can be set on the front surface of the lens, the back surface of the lens, or even in the internal area between the front surface of the lens and the back surface of the lens.

[0141] The microlens unit should have a smooth and transparent surface.

[0142] The size of the micro lens unit may be 0.6 mm to 2.0 mm.

[0143] The sizes of the microlens units, light scattering units and light diffraction units mentioned in the present disclosure refer to the diameters of these microstructures when they are circular, and when these microstructures are not circular, they refer to the diameters of the largest circumscribed circles of these microstructures.

[0144] The size, arrangement, light addition, and gap of the microlens unit can all follow the product design that has been proven effective by clinical data. For example, multiple microlens units can be arranged on the ophthalmic lens in many design methods, such as concentric annular microlens design, uniform independent island-shaped microlens design, ray-shaped microlens design, and hexagonal full-covered microlens design.

[0145] The microlens unit may also have other features. For example, the microlens unit may be a spherical microlens, an aspherical microlens, a refractive multi-focal microlens, a gradient microlens, a diffractive multi-focal microlens, a Fresnel zone plate microlens, a toric microlens, a prism microlens, an axicon microlens, a pinhole imaging microlens, or a composite microlens having two or more of the above features.

[0146] Light scattering unit

[0147] The light scattering unit may have transparent or translucent characteristics.

[0148] The light scattering unit can be located on the front surface, back surface, coating layer or inside the lens material.

[0149] When the light scattering unit is located inside the lens material, it can be designed as spherical bubbles, irregular bubbles, or regularly formed inclusions or irregularly shaped inclusions inside the lens material.

[0150] The size of the light scattering unit may be 100 μm to 400 μm, preferably 150 μm to 250 μm.

[0151] The shape and surface of the light scattering unit should be conducive to uniform scattering of light.

[0152] The shape of the light scattering unit can be a circle or a derivative of a circle, such as a single dot; or a shape formed by multiple circles closely connected such as an 8-shaped shape or a triangle-shaped shape; or a shape formed by multiple circles overlapping or partially overlapping such as concentric circles; it can also be a combination of thin lines, such as a straight line, a cross, an *, a M, etc.; it can also be a polygonal star, such as a four-pointed star, a five-pointed star, a six-pointed star, etc.

[0153] The more complex the unit structure of the light scattering unit, the better and more uniform the scattering effect, but at the same time the processing difficulty is greater, and a larger size can be accepted. On the contrary, the light scattering unit with a simple unit structure has a relatively poor scattering effect and is prone to granularity. It is necessary to reduce the size of the scattering point and increase the density of the scattering point to reduce its granularity and visibility.

[0154] The spacing between the light scattering units needs to be designed in accordance with the size and shape of the light scattering units. In principle, the larger the size of the light scattering units and the more complex the shape, the larger the spacing is required. In other words, the spacing between the light scattering units is determined based on the size and shape complexity of the light scattering units, and the spacing between the light scattering units is positively correlated with the size and shape complexity of the light scattering units, respectively.

[0155] For example, when the light scattering units are dots with a diameter of 100 μm to 200 μm, the optimal spacing between the light scattering units should be 150 μm to 250 μm. For example, when the light scattering units are cross-shaped with a diameter of 150 μm to 400 μm, the optimal spacing between the light scattering units should be 150 μm to 400 μm. More preferably, the spacing between the light scattering units can fluctuate within a predetermined numerical range so that the plurality of light scattering units form an irregular distribution, thereby effectively reducing the visual granularity and visibility of the appearance.

[0156] In some exemplary embodiments, the spacing between the light scattering units may be determined based on the diameter, or the sum of the perimeters, or the sum of the side lengths of the light scattering units. For example, the spacing between the light scattering units may be 1 to 5 times the diameter of the light scattering units. For another example, the spacing between the light scattering units may also be 0.29 to 3.18 times the sum of the perimeters of the light scattering units, or 0.29 to 3.18 times the sum of the side lengths of the light scattering units. Preferably, the spacing between the light scattering units may be equal to the sum of the perimeters of the light scattering units, or equal to the sum of the side lengths of the light scattering units.

[0157] In part or all of the light scattering coverage area, the density of the light scattering units can be variable. For example, the light scattering units near the center of the lens have a smaller diameter and / or a larger spacing; the light scattering units away from the center of the lens have a larger diameter and / or a smaller spacing. In other words, the size of the light scattering unit is negatively correlated with the distance of the light scattering unit from the center of the lens, and the spacing between the light scattering units is positively correlated with the distance of the light scattering unit from the center of the lens. Exemplarily, the light scattering units in the lower quadrant of the lens have a smaller diameter and / or a larger spacing.

[0158] The surface of the light scattering unit can be smooth or rough, but should not be damaged or opaque. In principle, a light scattering unit with a relatively simple shape (such as a dot) can be matched with a slightly rough surface to enhance the scattering characteristics.

[0159] Exemplarily, the light scattering unit is in the shape of a dot with a rough surface, the size of the light scattering unit is 100 μm to 200 μm, and the interval between two adjacent light scattering units is 150 μm to 250 μm.

[0160] Exemplarily, the light scattering unit is in the shape of a cross, the size of the light scattering unit is 100 μm to 200 μm, the line width of the cross does not exceed 80 μm, and the interval between two adjacent light scattering units is 150 μm to 400 μm.

[0161] Exemplarily, the light scattering unit is a pattern composed of continuous or discontinuous thin lines, and the width of the thin lines constituting the pattern is 80 μm to 150 μm.

[0162] Light diffraction unit

[0163] The light diffraction unit may be transparent, translucent or opaque. Preferably, a translucent light diffraction unit can maximize the ability of the light diffraction unit to reduce contrast while maintaining a good appearance when wearing glasses.

[0164] The light diffraction unit can be located on the front surface, back surface, coating layer or inside the lens material.

[0165] The size of the light diffraction unit should be less than or equal to 75000nm.

[0166] Preferably, the size of the light diffraction unit is 380 nanometers to 50,000 nanometers.

[0167] Since the size of the light diffraction unit is very small, the shape of the light diffraction unit has a relatively small effect on the disturbance of light. Therefore, in principle, the shape of the light diffraction unit can be any microscopic shape.

[0168] When the light diffraction unit is designed on the surface of the material, it can be preferably designed as a dot, a straight line or a cross.

[0169] When the light diffraction unit is inside the material, it may be preferably designed as spherical bubbles, irregular bubbles, or regularly formed inclusions or irregularly shaped inclusions inside the material.

[0170] Particularly, the light diffraction unit can be designed as a pattern composed of continuous or discontinuous thin lines, and the width of the thin lines constituting the pattern should be 380 nanometers to 50,000 nanometers.

[0171] Exemplarily, the light diffraction unit is in the shape of a dot or a cross, the size of the light diffraction unit is 30000nm to 50000nm, and the distance between two adjacent light diffraction units is 50000nm to 150000nm.

[0172] The density of the light diffraction units should be 50 to 2500 per square millimeter.

[0173] The selection of the density and microscopic shape of the light diffraction unit should take into account the other two design features of the lens, the light scattering performance. For example, in order to achieve a specified light scattering intensity, the missing light scattering intensity can be supplemented more freely and accurately by adjusting the density or shape of the light diffraction unit. Of course, as mentioned above, the light scattering intensity that can be supplemented by the light diffraction unit has a certain limit. If it exceeds this limit, it should be considered to increase or decrease the light scattering intensity by adjusting the light scattering unit.

[0174] The above is an exemplary description of the respective features of the microlens unit, the light scattering unit, and the light diffraction unit.

[0175] The following is an exemplary description of the combination of these three.

[0176] In the present disclosure, the size of the light scattering unit is smaller than that of the microlens unit, and the size of the light diffraction unit is smaller than that of the light scattering unit. That is, the microlens unit is the largest, the light scattering unit is the second, and the light diffraction unit is the smallest.

[0177] Both the light scattering unit and the light diffraction unit are used to reduce the retinal contrast. The light scattering unit reduces the retinal contrast by scattering the incoming light, and the light diffraction unit reduces the retinal contrast by diffracting the incoming light. Moreover, the degree of reducing the retinal contrast by multiple light scattering units is greater than that by multiple light diffraction units.

[0178] That is to say, the light scattering unit is used to undertake the main task of reducing the retinal contrast, while the light diffraction unit is only used to assist in reducing the retinal contrast. Compared with the light scattering unit taking on the entire task of reducing the retinal contrast, with the auxiliary effect of the light diffraction unit, the size of the light scattering unit can be designed to be smaller, thereby effectively reducing the visual granularity and visibility of the appearance, and improving the problem of poor wearing compliance.

[0179] At the same time, since the light diffraction unit only undertakes part of the task of reducing retinal contrast, the demand for the number of light diffraction units will not exceed the upper limit of design capabilities and process capabilities.

[0180] Furthermore, the light scattering unit and / or the light diffraction unit may be arranged in a non-microlens area adjacent to at least part (such as each) of the microlens area. In this way, the light scattering unit and / or the light diffraction unit are not only used to undertake the task of reducing the retinal contrast, but more importantly, they can also reduce the contrast difference between the microlens area and the non-microlens area, so that the boundary between the microlens area and the non-microlens area can be weakened, and the problems of the sense of separation and jumping existing in the microlens design can be optimized, so that the wearer can adapt more easily.

[0181] In some exemplary embodiments, the lens can be divided from the inside to the outside into: a central optical zone, a peripheral defocus zone, and a lens edge zone. The central optical zone may also be referred to as a correction zone or / far vision zone. The central optical zone refers to an area within a predetermined diameter range with the center of the lens as the center of the circle. The refractive power of the central optical zone may be the same as the prescribed refractive power. The prescribed refractive power refers to the refractive power prescribed for correcting myopia based on the refractive state of the eyes of a myopic patient. Exemplarily, the central optical zone may be an area within a diameter range of 3mm to 10mm with the center of the lens as the center of the circle. In particular, the central optical zone may be an area within a diameter range of 6mm to 9.5mm with the center of the lens as the center of the circle. The peripheral defocus zone may, for example, be an area (annular area) starting from the end of the central light zone to a diameter range of 40mm with the center of the lens as the center of the circle. The lens edge zone may be an area between the end of the peripheral defocus zone and the edge of the lens.

[0182] A plurality of microlens units may be scattered in the peripheral defocus zone outside the central optical zone. A plurality of light scattering units may be scattered in the peripheral defocus zone and the edge zone of the lens. Unlike the light scattering unit, since the size of the light diffraction unit is extremely small, the shape of the light diffraction unit will not have a significant impact on its diffraction effect, nor will it cause significant interference to vision, there is no graininess, and only a low degree of contrast reduction will be caused. Therefore, in some exemplary embodiments, in addition to being scattered in the peripheral defocus zone and the edge zone of the lens, a plurality of light diffraction units may also be scattered in the central optical zone. That is, the light diffraction unit may completely cover the entire lens, and this may be considered that an optical zone for correcting vision is no longer provided on the lens.

[0183] Figure 1 A schematic diagram of the distribution of microlens units on an ophthalmic lens according to at least one embodiment of the present disclosure is shown.

[0184] like Figure 1 As shown, a plurality of microlens units are distributed on a plurality of rays starting from the center of the ophthalmic lens. A plurality of rays are evenly distributed on the ophthalmic lens. The microlens units on the same ray are connected to each other. A plurality of microlens units are arranged in a ring shape in a rotationally symmetrical manner in the annular direction. The microlens units on a plurality of annular zones (such as the first and second annular zones from the inside to the outside) close to the central optical zone and located on different rays are connected to each other. There is a certain interval between the microlens units on the annular zones outside the plurality of annular zones and located on different rays.

[0185] In targeting Figure 1 When the ophthalmic lens shown is added with a light scattering unit and a light diffraction unit, a light scattering unit and a light diffraction unit can be provided in each first microlens area and its adjacent non-microlens area for at least part of the first microlens area in the annular bands outside the several annular bands. In other words, the first microlens area and its adjacent non-microlens area can be covered by the light scattering unit and the light diffraction unit to reduce the contrast difference between the first microlens area and its adjacent non-microlens area. Optionally, the light scattering unit and the light diffraction unit can be provided only in the non-microlens area adjacent to the first microlens area, and not in the first microlens area, especially not in the first microlens area, to avoid the interfering effect (especially the light scattering unit) on the defocus of the microlens area.

[0186] At least part of the first microlens area in the annular zone outside the several annular zones may refer to all microlens areas in the annular zones outside the several annular zones, or may refer to part of the microlens areas therein. Considering that the spacing (annular spacing) between the microlens units in the annular zones outside the several annular zones relatively close to the center of the lens is small, the boundary between the microlens area and the non-microlens area is not particularly obvious, and therefore, only the microlens areas in the annular zones with larger spacing may be optimized, that is, the light scattering unit and the light diffraction unit may be used to reduce the contrast between these microlens areas and the non-microlens areas. Taking the several annular zones as the first and second annular zones from the inside to the outside as an example, at least part of the first microlens area in the annular zones outside the several annular zones may refer to the microlens area in the annular zone outside the fourth annular zone from the inside to the outside.

[0187] Exemplarily, the plurality of light scattering units and the plurality of light diffraction units may be arranged in a rotationally symmetrical annular shape in the annular direction, and the plurality of light scattering units do not follow a ray arrangement in the radial direction. In addition, the spacing between the light scattering units and the spacing between the light diffraction units mentioned above may refer to the annular spacing and / or the radial spacing.

[0188] In some embodiments, the microlens unit is located on the front surface of the ophthalmic lens, the light scattering unit is located on the back surface of the ophthalmic lens or in the coating layer or lens material (preferably in the coating layer or lens material), and the light diffraction unit is located on the back surface of the ophthalmic lens or in the coating layer or lens material (preferably in the coating layer or lens material), so that the light scattering unit and the light diffraction unit can be reduced or avoided from being worn during use. Preferably, the microlens and the light scattering unit are located at different positions, and the microlens unit and the light diffraction unit are located at different positions. More preferably, the microlens, the light scattering unit, and the light diffraction unit are all located at different positions. Among them, different positions refer to different positions in the front projection of the ophthalmic lens.

[0189] In the front projection of the ophthalmic lens, the microlens unit, the light scattering unit, and the light diffraction unit may or may not overlap with each other. In some exemplary embodiments, the distribution of the microlens area, the light scattering area, and the light diffraction area is completely overlapping, that is, any area around the lens except the central correction area has microlenses, light scattering units, and light diffraction units at the same time. In some other exemplary embodiments, the microlens area does not overlap with the light scattering area, which can effectively avoid the interference effect that the light scattering unit may cause on the defocus of the microlens area.

[0190] Figure 2 A schematic structural diagram of an ophthalmic lens according to at least one embodiment of the present disclosure is shown.

[0191] like Figure 2As shown, both the light scattering unit and the light diffraction unit are tiny circular structures. This design has good visual effects and contrast reduction effects, and is easy to process. When this design is installed, if the size of the light scattering unit is too large, it will produce a sense of graininess, and the appearance visibility will be enhanced. Irregular arrangement and appropriate reduction of the size of the light scattering unit can effectively reduce the visual sense of graininess and appearance visibility. Among them, the diameter of the light scattering unit should be set to 100μm~200μm, and the gap between each two light scattering units should be 150μm~250μm. The maximum size of the light diffraction unit should be set to 30000nm~50000nm, and the gap between each two light diffraction units should be 50000nm~150000nm. It can be arranged regularly, and the light diffraction unit can cover the central optical area. Since the light diffraction unit will only cause a low degree of contrast reduction, it will not significantly affect the corrected vision.

[0192] Figure 3 A schematic structural diagram of an ophthalmic lens according to at least another embodiment of the present disclosure is shown.

[0193] like Figure 3 As shown, both the light scattering unit and the light diffraction unit are tiny cross-shaped structures. This design has good visual effects and contrast reduction effects, and is easy to process. When this design is installed, when the cross-shaped array is arranged too regularly and densely, a slight sense of grid will be produced. Irregular arrangement and appropriate reduction of density can effectively reduce the visual sense of grid and visibility of appearance. Among them, the maximum size of the light scattering unit should be set to 150μm~400μm, the line width should not exceed 80μm, the arrangement should be irregular, and the gap between every two crosses should be 150μm~400μm. The maximum size of the light diffraction unit should be set to 30000nm~50000nm, the gap between every two crosses should be 50000nm~150000nm, and it can be arranged regularly.

[0194] The above is an exemplary description of the ophthalmic lens disclosed herein including three microscopic optical structures, namely, a microlens unit, a light scattering unit, and a light diffraction unit.

[0195] In certain application scenarios and technical optimization needs, light diffraction units can also be used to implement targeted structural upgrades for two specific types of lenses already in the existing market. For example, among the mainstream myopia control lenses on the market, one type of lens is only equipped with microlenses, and the other type is only equipped with light scattering points (i.e., light scattering units). For lenses with only microlenses, the boundaries of their microlenses are easily perceived by the naked eye during actual use, resulting in obvious visual disturbances and inconsistency for the wearer, which ultimately leads to discomfort for the patient; and lenses with only light scattering points, due to the physical properties or design features of the light scattering points themselves, have obvious granularity that can be observed by the naked eye, which also makes it difficult for patients to adapt.

[0196] In this situation, the present disclosure proposes an innovative technical solution, that is, on the basis of the above-mentioned lenses with only microlenses or lenses with only light scattering points, an additional light diffraction unit is added. The introduction of the light diffraction unit, with the help of the principle of light diffraction, can cleverly and effectively re-regulate the light propagation path and distribution state. For lenses containing microlenses, light diffraction acts on the edges of the microlenses, blurring the originally abrupt boundaries and making the light transition more natural; for lenses with light scattering points, the diffraction effect can weaken the discrete sense of the light scattering points, smooth out the graininess, and make the scattering of light more uniform and soft, thereby comprehensively solving the problems of the obvious sense of microlens boundaries and the obvious sense of graininess of light scattering points in the above two types of lenses, and achieving the dual goals of improving the optical performance and visual experience of the lenses.

[0197] This solution is applicable to various microlens lenses, light scattering lenses, and even progressive focus lenses and zone multifocal lenses can be optimized using this solution.

[0198] In addition, microlens lenses can be combined with light scattering lenses to use light scattering points to act on the edges of microlenses, blurring the originally abrupt boundaries and making the light transition more natural. At the same time, the light scattering points allow the retinal signal pathway to be fully activated through contrast signals, and the microlenses can continuously guide the direction of eye axis development by providing appropriate defocus signals, thereby playing a compound strengthening role in the effect of myopia control.

[0199] Therefore, in some exemplary embodiments, the ophthalmic lens of the present disclosure may also include only two of the plurality of microlens units, the plurality of light scattering units, and the plurality of light diffraction units mentioned above.

[0200] For example, the ophthalmic lens of the present disclosure may include a plurality of microlens units and a plurality of light diffraction units, but not a light scattering unit. The size of the light diffraction unit is smaller than that of the microlens unit. For the microlens unit and the light diffraction unit, please refer to the above description, which will not be repeated here.

[0201] For another example, the ophthalmic lens of the present disclosure may include a plurality of light scattering units and a plurality of light diffraction units, but not a microlens unit. The size of the light diffraction unit is smaller than that of the light scattering unit. For the light scattering unit and the light diffraction unit, please refer to the above description, which will not be repeated here.

[0202] For another example, the ophthalmic lens of the present disclosure may include a plurality of microlens units and a plurality of light scattering units, but not a light diffraction unit. The size of the light scattering unit is smaller than that of the microlens unit. For the microlens unit and the light scattering unit, please refer to the above description, which will not be repeated here.

[0203] The present disclosure also provides a method for manufacturing an ophthalmic lens, which includes manufacturing at least two of a plurality of microlens units, a plurality of light scattering units, and a plurality of light diffraction units in the lens.

[0204] That is to say, the manufacturing method may include: separately manufacturing a plurality of microlens units, a plurality of light scattering units, and a plurality of light diffraction units in the lens. Alternatively, the manufacturing method may also include: manufacturing a plurality of microlens units and a plurality of light diffraction units in the lens without manufacturing a light scattering unit. Alternatively, the manufacturing method may include: manufacturing a plurality of light scattering units and a plurality of light diffraction units in the lens without manufacturing a microlens unit. Alternatively, the manufacturing method may include: manufacturing a plurality of microlens units and a plurality of light scattering units in the lens without manufacturing a light diffraction unit.

[0205] For the micro lens unit, the light scattering unit and the light diffraction unit, please refer to the above description. The following mainly describes the manufacturing principle by way of example.

[0206] According to the optical properties, mechanical properties and wearing comfort of the eyeglasses, suitable optical materials can be selected as the basic materials of the lenses. For example, a resin material with high refractive index, low dispersion, good light transmittance and wear resistance can be selected, and multi-level microstructures can be processed and manufactured on this basis.

[0207] The process of making multiple microlens units in the lens is as follows. High-precision mold forming technology or photolithography technology can be used to accurately make the designed microlens units in the predetermined area of ​​the lens. During the manufacturing process, the parameters such as the radius of curvature, the aperture size, and the spacing between adjacent microlenses of the microlens can be strictly controlled. Through multiple tests and optical simulation optimization, it is ensured that the microlens can achieve the expected defocusing and focusing effect.

[0208] The process of making multiple light scattering units in the lens is as follows. Light scattering units can be constructed on the surface of the lens or at a specific depth inside the lens using methods such as nanoimprinting technology, laser engraving, vapor deposition or chemical etching. The size, shape (which can be circular, polygonal or other shapes) and distribution density of the light scattering units are finely controlled according to the pre-set optical model and visual optimization scheme to produce the required light scattering effect.

[0209] The process of making multiple light diffraction units in the lens is as follows. With the help of advanced micro-nano processing technology, such as electron beam lithography, light diffraction units with specific microstructures can be manufactured. The key parameters such as the spacing, density and duty cycle of the light diffraction units are precisely controlled to achieve the function of reducing the contrast within a suitable range through the diffraction effect, while ensuring optical synergy with other microstructures.

[0210] After the lens is manufactured, professional optical testing equipment such as optical interferometer, spectrum analyzer, haze meter, etc. can be used to comprehensively test the various optical parameters of the lens, including but not limited to refractive index, Abbe number, defocus amount in different areas, light scattering angle, diffraction efficiency, and overall visual clarity. According to the test results, the manufacturing process of the lens is adjusted and optimized as necessary to ensure that each produced lens can meet the myopia control and visual effect requirements set by the present disclosure.

[0211] The present disclosure also provides a pair of frame glasses, on which the above-mentioned ophthalmic lenses are arranged.

[0212] The present disclosure can produce at least the following beneficial technical effects.

[0213] 1) Effectively control the development of myopia

[0214] Through the defocusing and focusing effect of the microlens, the peripheral imaging of the retina can be changed, the elongation of the eye axis can be suppressed, and the development of myopia can be curbed from the root. At the same time, the more comfortable and low visual fatigue visual environment created by the light scattering unit and the light diffraction unit also helps to reduce the deepening of myopia caused by factors such as excessive eye use. The synergy of multiple aspects makes the eyeglasses of the present invention have significant advantages in myopia control.

[0215] 2) Ensure good visual quality.

[0216] The parameters of the three microscopic optical structures of the lens have been optimized, such as the avoidance of the microlens in the central vision area, the reasonable distribution of light scattering units and light diffraction units in different areas, etc., to ensure that the wearer can still obtain clear and sharp visual effects when seeing objects, without blurred vision, deformation and other problems that affect visual quality, achieving a perfect balance between myopia control and normal visual function. The scattering effect of the light scattering unit on light makes the light softer and more uniform, avoiding strong light stimulation, and making the wearer feel visually comfortable in different lighting environments. The light diffraction unit reduces the contrast without affecting the normal visual effect, further reducing the visual burden of the eyes, especially suitable for long-term reading, using electronic devices and other eye-use scenarios. Wearers can see objects more easily and reduce discomfort symptoms such as eye soreness and dryness.

[0217] 3) Ensure good wearing appearance.

[0218] Through the organic combination of three microscopic optical structures, while reducing the contrast of the peripheral retina, the reflected light of the microscopic structure is also minimized as much as possible. Therefore, the wearing appearance of the lens is very normal and will not cause the wearer's willingness to wear it to decrease.

[0219] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein are selected to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An ophthalmic lens, wherein: The ophthalmic lens comprises a plurality of microlens units, the area where the microlens units are located is a microlens area, the microlens area has a first refractive power, and the first refractive power has a positive first additional focal power relative to the prescribed refractive power, The ophthalmic lens further comprises a plurality of light scattering units and a plurality of light diffraction units, The size of the light scattering unit is smaller than that of the microlens unit. The size of the light diffraction unit is smaller than that of the light scattering unit. The light scattering unit is used to scatter the incoming light to reduce the retinal contrast. The light diffraction unit is used to diffract the incoming light to reduce the retinal contrast. The multiple light scattering elements reduce the retinal contrast to a greater extent than the multiple light diffraction elements, The light scattering unit and / or the light diffraction unit is provided in a non-microlens area adjacent to at least part of the microlens area, and the non-microlens area has a second refractive power, and the second refractive power is equal to the prescription refractive power, or the second refractive power has a negative second additional focal length relative to the prescription refractive power, or the second refractive power has a positive third additional focal length relative to the prescription refractive power, and the third additional focal length is less than the first additional focal length.

2. The ophthalmic lens according to claim 1, wherein: The plurality of microlens units are distributed in a peripheral defocusing area outside the central optical area, The plurality of light scattering units are scattered in the peripheral defocusing area and the edge area of ​​the lens, and the edge area of ​​the lens is the area from the end of the peripheral defocusing area to the edge of the lens. The plurality of light diffraction units are distributed in the peripheral defocus area and the edge area of ​​the lens.

3. The ophthalmic lens according to claim 2, wherein: The plurality of light diffraction units are also dispersed in the central optical zone.

4. The ophthalmic lens according to claim 2, wherein: The plurality of microlens units are distributed on a plurality of rays starting from the center of the ophthalmic lens, The plurality of rays are evenly distributed on the ophthalmic lens, The microlens units on the same ray are connected to each other. The plurality of microlens units are arranged in a rotationally symmetrical ring shape. The microlens units on several annular zones close to the central optical zone and located on different rays are connected to each other. There is a certain interval between the microlens units on the annular zones outside the plurality of annular zones and located on different rays.

5. The ophthalmic lens according to claim 4, wherein: For at least part of the first microlens regions in the annular zones outside the plurality of annular zones, the light scattering unit and the light diffraction unit are provided in each of the first microlens regions and its adjacent non-microlens region.

6. The ophthalmic lens according to claim 1, wherein: The spacing between the light scattering units is determined based on the size and shape complexity of the light scattering units, and the spacing between the light scattering units is positively correlated with the size and shape complexity of the light scattering units, respectively.

7. The ophthalmic lens according to claim 1, wherein: The spacing between the light scattering units is 1 to 5 times the diameter of the light scattering units.

8. The ophthalmic lens according to claim 1, wherein: The spacing between the light scattering units is 0.29 to 3.18 times the sum of the perimeters of the light scattering units, or is 0.29 to 3.18 times the sum of the side lengths of the light scattering units.

9. The ophthalmic lens according to claim 1, wherein: The size of the light scattering unit is negatively correlated with the distance of the light scattering unit from the center of the lens, and / or The spacing between the light scattering units is positively correlated with the distance of the light scattering unit from the center of the lens.

10. The ophthalmic lens according to claim 1, wherein: The intervals between different light scattering units in the plurality of light scattering units fluctuate within a predetermined value range, so that the plurality of light scattering units form an irregular distribution.

11. The ophthalmic lens according to claim 1, wherein: The microlens unit has a smooth and transparent surface; and / or The light scattering unit is transparent or translucent; and / or The light diffraction unit is transparent, semi-transparent or opaque.

12. The ophthalmic lens according to claim 1, wherein: The size of the microlens unit is 0.6 mm to 2.0 mm, and / or The size of the light scattering unit is 100 μm to 400 μm, and / or The size of the light diffraction unit is less than or equal to 75000 nm.

13. The ophthalmic lens according to claim 1, wherein: The light scattering unit is in the shape of a dot with a rough surface, the size of the light scattering unit is 100 μm to 200 μm, and the distance between two adjacent light scattering units is 150 μm to 250 μm; or The light scattering unit is in the shape of a cross, the size of the light scattering unit is 100 μm to 200 μm, the line width of the cross does not exceed 80 μm, and the spacing between two adjacent light scattering units is 150 μm to 400 μm; or The light scattering unit is a pattern composed of continuous or discontinuous thin lines, and the width of the thin lines constituting the pattern is 80 μm to 150 μm.

14. The ophthalmic lens of claim 1, wherein: The light diffraction unit is in a dot shape or a cross shape, the size of the light diffraction unit is 30000nm-50000nm, and the distance between two adjacent light diffraction units is 50000nm-150000nm.

15. The ophthalmic lens of claim 1, wherein: The density of the light diffraction units is 50 to 2500 per square millimeter.

16. The ophthalmic lens of claim 1, wherein: The microlens unit is located on the front surface of the ophthalmic lens; and / or The light scattering unit is located on the rear surface of the ophthalmic lens or in the coating layer or lens material; and / or The light diffraction unit is located on the rear surface or coating layer of the ophthalmic lens or inside the lens material.

17. An ophthalmic lens, wherein: The ophthalmic lens comprises a plurality of microlens units, the area where the microlens units are located is a microlens area, the microlens area has a first refractive power, and the first refractive power has a positive first additional focal power relative to the prescribed refractive power, The ophthalmic lens further comprises a plurality of light diffraction units, The size of the light diffraction unit is smaller than that of the microlens unit. The light diffraction unit is used to diffract the incoming light to reduce the retinal contrast. The light diffraction unit is provided in a non-microlens area adjacent to at least part of the microlens area, and the non-microlens area has a second refractive power, the second refractive power is equal to the prescription refractive power, or the second refractive power has a negative second additional focal power relative to the prescription refractive power, or the second refractive power has a positive third additional focal power relative to the prescription refractive power, and the third additional focal power is less than the first additional focal power.

18. The ophthalmic lens according to claim 17, wherein: The plurality of microlens units are distributed in a peripheral defocusing area outside the central optical area, The plurality of light diffraction units are scattered in the peripheral defocus zone and the edge zone of the lens, and the edge zone of the lens is the area from the end of the peripheral defocus zone to the edge of the lens.

19. The ophthalmic lens according to claim 18, wherein: The plurality of light diffraction units are also dispersed in the central optical zone.

20. The ophthalmic lens of claim 18, wherein: The plurality of microlens units are distributed on a plurality of rays starting from the center of the ophthalmic lens, The plurality of rays are evenly distributed on the ophthalmic lens, The microlens units on the same ray are connected to each other. The plurality of microlens units are arranged in a rotationally symmetrical ring shape. The microlens units on several annular zones close to the central optical zone and located on different rays are connected to each other. There is a certain interval between the microlens units on the annular zones outside the plurality of annular zones and located on different rays.

21. The ophthalmic lens of claim 20, wherein: For at least part of the first microlens regions in the annular zones outside the plurality of annular zones, the light diffraction unit is provided in each of the first microlens regions and its adjacent non-microlens region.

22. The ophthalmic lens of claim 17, wherein: The microlens unit has a smooth and transparent surface; and / or The light diffraction unit is transparent, semi-transparent or opaque.

23. The ophthalmic lens of claim 17, wherein: The size of the microlens unit is 0.6 mm to 2.0 mm, and / or The size of the light diffraction unit is less than or equal to 75000 nm.

24. The ophthalmic lens of claim 17, wherein: The light diffraction unit is in a dot shape or a cross shape, the size of the light diffraction unit is 30000nm-50000nm, and the distance between two adjacent light diffraction units is 50000nm-150000nm.

25. The ophthalmic lens of claim 17, wherein: The density of the light diffraction units is 50 to 2500 per square millimeter.

26. The ophthalmic lens of claim 17, wherein: The microlens unit is located on the front surface of the ophthalmic lens; and / or The light diffraction unit is located on the rear surface or coating layer of the ophthalmic lens or inside the lens material.

27. An ophthalmic lens, wherein: The ophthalmic lens comprises a plurality of light scattering units and a plurality of light diffraction units, The size of the light scattering unit is smaller than that of the microlens unit. The size of the light diffraction unit is smaller than that of the light scattering unit. The light scattering unit is used to scatter the incoming light to reduce the retinal contrast. The light diffraction unit is used to diffract the incoming light to reduce the retinal contrast. The multiple light scattering elements reduce retinal contrast to a greater extent than the multiple light diffraction elements.

28. The ophthalmic lens of claim 27, wherein: The plurality of light scattering units and the plurality of light diffraction units are respectively dispersed in lens regions outside the central optical zone.

29. The ophthalmic lens of claim 28, wherein: The plurality of light diffraction units are also dispersed in the central optical zone.

30. The ophthalmic lens of claim 27, wherein: The spacing between the light scattering units is determined based on the size and shape complexity of the light scattering units, and the spacing between the light scattering units is positively correlated with the size and shape complexity of the light scattering units, respectively.

31. The ophthalmic lens of claim 27, wherein: The spacing between the light scattering units is 1 to 5 times the diameter of the light scattering units.

32. The ophthalmic lens of claim 27, wherein: The spacing between the light scattering units is 0.29 to 3.18 times the sum of the perimeters of the light scattering units, or is 0.29 to 3.18 times the sum of the side lengths of the light scattering units.

33. The ophthalmic lens of claim 27, wherein: The size of the light scattering unit is negatively correlated with the distance of the light scattering unit from the center of the lens, and / or The spacing between the light scattering units is positively correlated with the distance of the light scattering unit from the center of the lens.

34. The ophthalmic lens of claim 27, wherein: The intervals between different light scattering units in the plurality of light scattering units fluctuate within a predetermined value range, so that the plurality of light scattering units form an irregular distribution.

35. The ophthalmic lens of claim 27, wherein: The light scattering unit is transparent or translucent; and / or The light diffraction unit is transparent, semi-transparent or opaque.

36. The ophthalmic lens of claim 27, wherein: The size of the light scattering unit is 100 μm to 400 μm, and / or The size of the light diffraction unit is less than or equal to 75000 nm.

37. The ophthalmic lens of claim 27, wherein: The light scattering unit is in the shape of a dot with a rough surface, the size of the light scattering unit is 100 μm to 200 μm, and the distance between two adjacent light scattering units is 150 μm to 250 μm; or The light scattering unit is in the shape of a cross, the size of the light scattering unit is 100 μm to 200 μm, the line width of the cross does not exceed 80 μm, and the spacing between two adjacent light scattering units is 150 μm to 400 μm; or The light scattering unit is a pattern composed of continuous or discontinuous thin lines, and the width of the thin lines constituting the pattern is 80 μm to 150 μm.

38. The ophthalmic lens of claim 27, wherein: The light diffraction unit is in a dot shape or a cross shape, the size of the light diffraction unit is 30000nm-50000nm, and the distance between two adjacent light diffraction units is 50000nm-150000nm.

39. The ophthalmic lens of claim 27, wherein: The density of the light diffraction units is 50 to 2500 per square millimeter.

40. The ophthalmic lens of claim 27, wherein: The light scattering unit is located on the rear surface of the ophthalmic lens or in the coating layer or lens material; and / or The light diffraction unit is located on the rear surface or coating layer of the ophthalmic lens or inside the lens material.

41. An ophthalmic lens, wherein: The ophthalmic lens comprises a plurality of microlens units, the area where the microlens units are located is a microlens area, the microlens area has a first refractive power, and the first refractive power has a positive first additional focal power relative to the prescribed refractive power, The ophthalmic lens further comprises a plurality of light scattering units, The size of the light scattering unit is smaller than that of the microlens unit. The light scattering unit is used to scatter the incoming light to reduce the retinal contrast. The light scattering unit is provided in a non-microlens area adjacent to at least part of the microlens area, and the non-microlens area has a second refractive power, the second refractive power is equal to the prescription refractive power, or the second refractive power has a negative second additional focal power relative to the prescription refractive power, or the second refractive power has a positive third additional focal power relative to the prescription refractive power, and the third additional focal power is less than the first additional focal power.

42. The ophthalmic lens of claim 41, wherein: The plurality of microlens units are distributed in a peripheral defocusing area outside the central optical area, The plurality of light scattering units are distributed in the peripheral defocusing zone and the edge zone of the lens. The edge zone of the lens is a zone from the end of the peripheral defocusing zone to the edge of the lens.

43. The ophthalmic lens of claim 42, wherein: The plurality of microlens units are distributed on a plurality of rays starting from the center of the ophthalmic lens, The plurality of rays are evenly distributed on the ophthalmic lens, The microlens units on the same ray are connected to each other. The plurality of microlens units are arranged in a rotationally symmetrical ring shape. The microlens units on several annular zones close to the central optical zone and located on different rays are connected to each other. There is a certain interval between the microlens units on the annular zones outside the plurality of annular zones and located on different rays.

44. The ophthalmic lens of claim 43, wherein: For at least part of the first microlens regions in the annular zones outside the plurality of annular zones, the light scattering unit is provided in each of the first microlens regions and its adjacent non-microlens region.

45. The ophthalmic lens of claim 41, wherein: The spacing between the light scattering units is determined based on the size and shape complexity of the light scattering units, and the spacing between the light scattering units is positively correlated with the size and shape complexity of the light scattering units, respectively.

46. ​​The ophthalmic lens of claim 41, wherein: The spacing between the light scattering units is 1 to 5 times the diameter of the light scattering units.

47. The ophthalmic lens of claim 41, wherein: The spacing between the light scattering units is 0.29 to 3.18 times the sum of the perimeters of the light scattering units, or is 0.29 to 3.18 times the sum of the side lengths of the light scattering units.

48. The ophthalmic lens of claim 41, wherein: The size of the light scattering unit is negatively correlated with the distance of the light scattering unit from the center of the lens, and / or The spacing between the light scattering units is positively correlated with the distance of the light scattering unit from the center of the lens.

49. The ophthalmic lens of claim 41, wherein: The intervals between different light scattering units in the plurality of light scattering units fluctuate within a predetermined value range, so that the plurality of light scattering units form an irregular distribution.

50. The ophthalmic lens of claim 41, wherein: The microlens unit has a smooth and transparent surface; and / or The light scattering unit is transparent or translucent.

51. The ophthalmic lens of claim 41, wherein: The size of the microlens unit is 0.6 mm to 2.0 mm, and / or The size of the light scattering unit is 100 μm to 400 μm.

52. The ophthalmic lens of claim 41, wherein: The light scattering unit is in the shape of a dot with a rough surface, the size of the light scattering unit is 100 μm to 200 μm, and the distance between two adjacent light scattering units is 150 μm to 250 μm; or The light scattering unit is in the shape of a cross, the size of the light scattering unit is 100 μm to 200 μm, the line width of the cross does not exceed 80 μm, and the spacing between two adjacent light scattering units is 150 μm to 400 μm; or The light scattering unit is a pattern composed of continuous or discontinuous thin lines, and the width of the thin lines constituting the pattern is 80 μm to 150 μm.

53. The ophthalmic lens of claim 41, wherein: The microlens unit is located on the front surface of the ophthalmic lens; and / or The light scattering unit is located on the rear surface or coating layer of the ophthalmic lens or inside the lens material.

54. A method for manufacturing an ophthalmic lens, comprising: A plurality of microlens units, a plurality of light scattering units and a plurality of light diffraction units are respectively manufactured in the lens. Wherein, the size of the light scattering unit is smaller than the size of the microlens unit, The size of the light diffraction unit is smaller than that of the light scattering unit. The light scattering unit is used to scatter the incoming light to reduce the retinal contrast. The light diffraction unit is used to diffract the incoming light to reduce the retinal contrast. The multiple light scattering elements reduce the retinal contrast to a greater extent than the multiple light diffraction elements, The area where the microlens unit is located is a microlens area, the microlens area has a first refractive power, and the first refractive power has a positive first additional focal length relative to the prescription refractive power. The light scattering unit and / or the light diffraction unit is arranged in a non-microlens area adjacent to at least part of the microlens area, and the non-microlens area has a second refractive power, and the second refractive power is equal to the prescription refractive power, or the second refractive power has a negative second additional focal length relative to the prescription refractive power, or the second refractive power has a positive third additional focal length relative to the prescription refractive power, and the third additional focal length is less than the first additional focal length.

55. A method for manufacturing an ophthalmic lens, comprising: Multiple microlens units and multiple light diffraction units are made in the lens. Wherein, the size of the light diffraction unit is smaller than the size of the microlens unit, The light diffraction unit is used to diffract the incoming light to reduce the retinal contrast. The area where the microlens unit is located is a microlens area, the microlens area has a first refractive power, and the first refractive power has a positive first additional focal length relative to the prescription refractive power. The light diffraction unit is arranged in a non-microlens area adjacent to at least part of the microlens area, and the non-microlens area has a second refractive power, and the second refractive power is equal to the prescription refractive power, or the second refractive power has a negative second additional focal length relative to the prescription refractive power, or the second refractive power has a positive third additional focal length relative to the prescription refractive power, and the third additional focal length is less than the first additional focal length.

56. A method for manufacturing an ophthalmic lens, comprising: Multiple light scattering units and multiple light diffraction units are made in the lens. Wherein, the size of the light scattering unit is smaller than the size of the microlens unit, The size of the light diffraction unit is smaller than that of the light scattering unit. The light scattering unit is used to scatter the incoming light to reduce the retinal contrast. The light diffraction unit is used to diffract the incoming light to reduce the retinal contrast. The multiple light scattering elements reduce retinal contrast to a greater extent than the multiple light diffraction elements.

57. A method for manufacturing an ophthalmic lens, comprising: A plurality of microlens units and a plurality of light scattering units are made in the lens. Wherein, the size of the light scattering unit is smaller than the size of the microlens unit, The light scattering unit is used to scatter the incoming light to reduce the retinal contrast. The area where the microlens unit is located is a microlens area, the microlens area has a first refractive power, and the first refractive power has a positive first additional focal length relative to the prescription refractive power. The light scattering unit is arranged in a non-microlens area adjacent to at least part of the microlens area, and the non-microlens area has a second refractive power, and the second refractive power is equal to the prescription refractive power, or the second refractive power has a negative second additional focal length relative to the prescription refractive power, or the second refractive power has a positive third additional focal length relative to the prescription refractive power, and the third additional focal length is less than the first additional focal length.

58. A pair of frame glasses, provided with an ophthalmic lens according to any one of claims 1 to 53, or an ophthalmic lens manufactured according to any one of claims 54 to 57.

Images