Four-quadrant myopia prevention and control lens with different defocus amounts and detection device

Abstract

The present application relates to a kind of four quadrant defocus different myopia prevention lenses and detection device, including lens area and defocus area;The lens area has the first cambered surface towards user face and the second cambered surface away from user face, the first cambered surface and the second cambered surface are oppositely arranged;The defocus area is arranged on the second cambered surface, and the defocus area is sequentially arranged by several different height microlenses;The defocus area includes central optical area in central region and four quadrant areas located in upper side, lower side, temporal side and nasal side peripheral region of lens respectively;The defocus amount ratio of four quadrant areas is temporal side quadrant area > nasal side quadrant area > lower side quadrant area > upper side quadrant area > central optical area;The line formed by the microlens away from the vertex of the second cambered surface is aspherical surface;The height of the microlens is the shortest distance from the second cambered surface to the vertex / top surface of the microlens.The present application can accurately correct retinal peripheral hyperopic defocus and accommodation lag.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of lens design, in particular to a myopia prevention and control lens with different defocus amounts in four quadrants and a production device. BACKGROUND

[0002] In the existing theoretical research on the nature, causes and development of myopia, peripheral defocus is currently more recognized. The principle of peripheral defocus is that part of the light passes through the lens to form an image on the retina, and another part of the light is focused in front of the retina to form a myopic defocus signal, thereby inhibiting the deepening of myopia.

[0003] However, the myopic eyeball is not a perfect sphere, and the retinal periphery in the four quadrants is at different refractive powers, so the required defocus amount should be different, while the defocus amount caused by the microlens of the existing defocus lens is the same. Adolescent myopic eyes have retinal peripheral hypermetropia defocus and accommodation lag, the refractive powers of the retinal quadrants and axis positions of the myopic eyeball are asymmetric, the existing defocus frame lens does not match the refractive powers of the retinal quadrants and axis positions, still produces peripheral refractive disparity or cannot accurately correct retinal peripheral hypermetropia defocus and accommodation lag, and the detection of the refractive powers of the quadrants and axis positions of the defocus frame lens is very inconvenient, and the detection effect deviates greatly from the actual situation. SUMMARY

[0004] (I) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present application provides a myopia prevention and control lens with different defocus amounts in four quadrants and a detection device, which solves the technical problem of being unable to accurately correct retinal peripheral hypermetropia defocus and accommodation lag.

[0006] (II) Technical solutions

[0007] In order to achieve the above-mentioned purposes, the main technical solutions adopted by the present application include:

[0008] In a first aspect, the present application provides a myopia prevention and control lens with different defocus amounts in four quadrants, comprising a lens area and a defocus area.

[0009] The lens area has a first arc surface facing the user's face and a second arc surface away from the user's face, and the first arc surface and the second arc surface are oppositely arranged.

[0010] The defocus area is arranged on the second arc surface, and the defocus area is formed by a plurality of microlenses with different heights arranged in order.

[0011] The defocus area comprises a central optical area in the central area and four quadrant areas respectively in the upper side, lower side, temporal side and nasal side peripheral areas of the lens; the ratio of the defocus amounts of the four quadrant areas is temporal side quadrant area > nasal side quadrant area > lower side quadrant area > upper side quadrant area > central optical area;

[0012] The surface formed by the lines away from the vertexes of the second arc surface of the microlenses is an aspheric surface.

[0013] The height of the microlens is the shortest distance from the second arc surface to the vertex / top surface of the microlens.

[0014] The myopia prevention and control lens with different defocus amounts in four quadrants proposed in the embodiment of the application is prepared into five areas of a central optical area, an upper side quadrant area, a lower side quadrant area, a temporal side quadrant area and a nasal side quadrant area, the quadrant areas are prepared with different positive values, the lens is matched with the refractive power in each quadrant of the retina periphery, the lens is also considered in terms of near vision accommodation lag and lens aspheric optimization, and is more in line with the peripheral refractive parameters of the myopic eyeball, so that the hypermetropia defocus and accommodation lag of the retina periphery are precisely corrected.

[0015] Preferably, the three-dimensional structure of the microlens is a hemisphere, a semi-elliptical sphere, a cylinder, a hexagonal prism or a triangular prism.

[0016] Preferably, the microlenses are arranged in the defocus area in a plurality of concentric circular rings with diameters gradually increasing.

[0017] The three-dimensional structure of the microlenses forming the circular ring is a hemisphere and a semi-elliptical sphere, and the diameter of the microlens located on the outer side in the radial direction is greater than the diameter of the microlens located on the inner side.

[0018] Preferably, the microlenses in the defocus area are arranged in a radial manner.

[0019] The three-dimensional structure of the microlens is a cylinder, and the diameter of the cylinder located on the outer side in the radial direction is greater than the diameter of the cylinder located on the inner side.

[0020] Preferably, the microlenses are arranged in the defocus area in a polygonal ring.

[0021] The three-dimensional structure of the microlenses forming the polygonal ring is a prism.

[0022] Preferably, the microlenses are arranged in a spaced manner, and the distance between two adjacent microlenses in the circumferential direction gradually increases in the radial direction.

[0023] Preferably, the power of the microlenses in the defocus area, i.e. the defocus amount, ranges from +3.00D to +4.00D.

[0024] In a second aspect, the embodiment of the present application provides a detection device, which comprises a detection frame body, a lens clamping frame arranged on the detection frame body and clamping the myopia prevention lens, an eyeball simulation module arranged on the detection frame body and located at one side of the lens clamping frame, an observation module arranged on the detection frame body and located at a side of the lens clamping frame away from the eyeball simulation module, and an image collection module arranged on the detection frame body and located at a side of the eyeball simulation module away from the lens clamping frame.

[0025] Preferably, the eyeball simulation module comprises an eyeball placement platform, a simulation eyeball connected to the inside of the eyeball placement platform, and a driving assembly arranged in the inside of the eyeball placement platform and driving the simulation eyeball to rotate, a through-type perspective hole is horizontally arranged in the middle of the eyeball placement platform, a ball hole for placing and rotating the simulation eyeball is coaxially arranged on the inner wall of the perspective hole of the eyeball placement platform, the driving assembly comprises a driving ball which is embedded in the eyeball placement platform and rotates, and vertical and horizontal driving belts which are arranged in the eyeball placement platform and located at both ends of the driving ball, the driving ball is located at the lower side of the simulation eyeball and abuts against the simulation eyeball, the simulation eyeball rotates in the opposite direction with the driving ball, and the vertical and horizontal driving belts are both small conveying belts and are arranged vertically and horizontally respectively, and the vertical and horizontal driving belts abut against the side ends of the driving ball and drive the driving ball to rotate by friction.

[0026] Preferably, the observation module comprises an observation platform arranged vertically and having one end facing the lens clamping frame, an observation object arranged on the end face of the observation platform close to the lens clamping frame, and steel wire rope winders arranged at the four corners of the observation platform, the steel wire ropes on the steel wire rope winders are fixed to the observation object, and the observation object moves with the winding and unwinding of the steel wire ropes by the four steel wire rope winders.

[0027] (Three) beneficial effects

[0028] The beneficial effects of the present application are:

[0029] Firstly, the present application prepares the lens surface of the defocus frame glasses into five regions of a central optical zone, an upper quadrant zone, a lower quadrant zone, a temporal quadrant zone and a nasal quadrant zone, the quadrant zones are prepared with different positive values, which are matched with the refractive power of each quadrant of the retina periphery, and also take into account the near vision accommodation lag and lens aspheric optimization, and are more consistent with the peripheral refractive parameters of the myopic eyeball, so as to accurately correct the hyperopic defocus and accommodation lag of the retina periphery.

[0030] Secondly, the off-focus frame spectacle lens provided by the application has different defocus amounts in different quadrants, is more in line with the different diopter distribution of different axes of the eyeball, and is closer to the peripheral refractive distribution state of the retina of the human eye, and is based on the individualized optical customization of the physiology and optics of the eyeball.

[0031] Finally, the detection device provided by the application can more accurately simulate the actual eyeball viewing effect and detect the off-focus frame spectacle lens, and the detection process is more convenient and fast, and the detection result is closer to the truth and more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 The vertical sectional view of the myopia prevention lens provided by the application is shown in the figure.

[0033] Figure 2 The microlens structure diagram of the myopia prevention lens provided by the application is shown in the figure.

[0034] Figure 3 The structure diagram of the myopia prevention lens embodiment 1 provided by the application is shown in the figure.

[0035] Figure 4 The structure diagram of the myopia prevention lens embodiment 2 provided by the application is shown in the figure.

[0036] Figure 5 The structure diagram of the myopia prevention lens embodiment 3 provided by the application is shown in the figure.

[0037] Figure 6 The four-quadrant distribution diagram of the myopia prevention lens provided by the application is shown in the figure.

[0038] Figure 7 The structure diagram of the detection device provided by the application is shown in the figure.

[0039] Figure 8 The sectional view of the detection device provided by the application is shown in the figure.

[0040] Figure 9 The sectional view of the eyeball placement platform in the detection device provided by the application is shown in the figure.

[0041]

Explanation of reference signs

[0042] 100, off-focus frame spectacle lens;

[0043] 10, lens area; 11, first arc surface; 12, second arc surface;

[0044] 20, off-focus area;

[0045] 15, microlens;

[0046] 3, detection frame; 4, lens holder; 41, lens placement slot; 5, eyeball simulation module; 51, eyeball placement platform; 511, perspective hole; 512, ball hole; 52, simulated eyeball; 53, drive assembly; 531, drive ball; 532, vertical drive belt; 533, horizontal drive belt; 6, observation module; 61, observation platform; 62, observation object; 63, steel wire rope winder; 7, image collection module. DETAILED DESCRIPTION

[0047] In order to better explain the present application, so as to be understood, the following specific embodiments are combined with the drawings, and the present application is described in detail. It should be understood that the specific embodiments given herein are for the purpose of explanation to those skilled in the art, and are only exemplary and not limiting.

[0048] In the following description, when the lens is used, the side away from the user's face is the front, and the side close to the user's face is the back.

[0049] As shown in the figure, the figure schematically shows a vertical cross-section schematic diagram of a four-quadrant defocus amount different myopia prevention and control lens provided by the present application, the defocus frame spectacle lens 100 comprises a lens area 10 and a defocus area 20; Figure 1

[0050] The lens area 10 has a first arc surface 11 towards the user's face and a second arc surface 12 away from the user's face, and the first arc surface 11 and the second arc surface 12 are oppositely arranged;

[0051] For the defocus frame spectacle lens 100 as myopia prevention and control, the lens area 10 as a whole is a concave lens structure;

[0052] The defocus area 20 is arranged on the second arc surface 12, and the defocus area 20 is formed by orderly arranging a plurality of micro-lenses 15 with different heights.

[0053] The height refers to the shortest distance from the second arc surface 12 to the vertex or top surface of the micro-lens 15.

[0054] The line connecting the vertices of the micro-lenses 15 away from the second arc surface 12 forms a non-spherical surface.

[0055] ​In the present application, the same off-focus frame spectacle lens 100 can be formed by orderly arranging different stereoscopic structure of the microlens 15. The "different stereoscopic structure" includes the following cases: the off-focus area 20 on the same off-focus frame spectacle lens 100 can be formed by orderly arranging the microlens 15 with the same shape but different heights on the second arc surface 12. That is, taking the microlens 15 as a cylinder as an example, the microlens 15 in the off-focus area 20 can be a cylinder with the same diameter, but the height of the cylinder is different, so as to ensure that the face formed by the line connecting the vertices of the microlens 15 away from the second arc surface 12 is aspherical. It can be understood that the microlens 15 with different heights of the cylinder structure is aspherical, and of course, the vertex can also be understood as the center of the top surface of the cylinder, and the face formed by the line connecting the centers of the top surfaces of the microlens 15 is aspherical.

[0056] Of course, the off-focus area 20 on the same off-focus frame spectacle lens 100 can also be formed by orderly arranging the microlens 15 with different shapes and different heights on the second arc surface 12. For example, the microlens can be a hemisphere, a cylinder, a hexagonal prism or a triangular prism, etc., as shown in FIG. 1, as long as the face formed by the line connecting the vertices of the microlens 15 away from the second arc surface 12 is aspherical. Figure 2

[0057] For the convenience of processing, the microlens 15 with different heights and the same shape on the second arc surface 12 can be selected to form the off-focus area 20.

[0058] The off-focus area 20 includes a central optical area located in the center of the lens and four quadrant areas located in the upper, lower, temporal and nasal peripheral regions of the lens, respectively. The four quadrant areas are prepared with positive values relative to the central optical area, and the off-focus amount ratio of the four quadrant areas is: temporal quadrant area > nasal quadrant area > lower quadrant area > upper quadrant area > central optical area.

[0059] The above all belong to the off-focus area 20 formed by the microlens 15 with different stereoscopic structures.

[0060] Based on this, the present application prepares the off-focus frame spectacle lens surface into five areas of central optical area, upper quadrant area, lower quadrant area, temporal quadrant area and nasal quadrant area. The quadrant areas are prepared with different positive values, which are matched with the refractive power of each quadrant of the retina periphery, and also take into account the near vision accommodation lag and lens aspherical optimization, which is more consistent with the peripheral refractive parameters of myopic eyeball, so as to accurately correct the hypermetropic off-focus and accommodation lag of the retina periphery.

[0061] ​Secondly, the present application provides the off-focus frame spectacle lens, different quadrant area off-focus amount is different, more in line with the different axis position of the eyeball different diopter distribution, more close to the human eye retina peripheral refraction distribution state, based on the individualized optical customization of the physiology and optics of the eyeball.

[0062] Finally, the design of the type of spectacle lens not only considers the correction of the retinal nasal and temporal peripheral hypermetropia defocus in the temporal and nasal quadrant areas, but also considers the aspheric design in the upper quadrant area and the central area. The peripheral defocus theory has formed a consensus in the ophthalmology medical community, and the peripheral hypermetropia defocus is the main reason for the continuous elongation of the myopic eyeball. However, the off-focus spectacle lens has been used for 5 years, and the peripheral part of the spectacle lens is applied with +3.50D equal correction. The peripheral hypermetropia defocus degree of the temporal retina of the myopic eye is greater than that of the nasal retina. Smith EL reported that the average value of the nasal hypermetropia defocus is +1.64D, and the average value of the temporal hypermetropia defocus is +2.47D. There are many reports of the same results at home and abroad. This type of frame spectacle lens should use different positive values to correct the hypermetropia defocus in the temporal and nasal quadrant areas, so as to achieve better myopia defocus effect and more effectively prevent and control myopia in a true sense.

[0063] Embodiment 1

[0064] For details, please continue to refer to Figure 3 , Figure 3 The off-focus frame spectacle lens provided in Embodiment 1 of the present application is shown in the structure diagram.

[0065] The lens area 10 in the concave lens structure has a first arc surface 11 on the back side and a second arc surface 12 on the front side. The off-focus area 20 is arranged on the second arc surface 12, and the off-focus area 20 is arranged by a plurality of microlenses 15 with different heights; the line formed by the vertices of the microlenses 15 away from the second arc surface 12 is a non-spherical surface.

[0066] In this embodiment, the off-focus area 20 formed by microlenses 15 with different three-dimensional structures can be arranged. However, the height of the microlenses 15 is preferably 2-4 microns, which can better control the sag of the microlenses 15, so that the line formed by the vertices of the microlenses 15 away from the second arc surface 12 is a non-spherical surface.

[0067] In this embodiment, the three-dimensional structure of the microlenses 15 can be a hemisphere and a semi-ellipsoid, and the projection of the microlenses 15 on the second arc surface 12 is a circular shape with the same diameter.

[0068] The height of the microlens 15 is set to be small, which can reduce the height of the microlens 15 relative to the second curved surface 12, so that the whole lens is more flattened, and excellent impact resistance can be maintained, and the reliability of the lens 100 is improved.

[0069] In addition, the overall height is small, and the height difference of the microlenses with different heights can be controlled in a smaller range. While obtaining asphericity, the optical interference caused by the microlenses with too high height to the user wearing the glasses is obviously reduced, thereby greatly reducing / eliminating the dizziness caused by visual stimulation.

[0070] In the embodiment 1, the height of the microlens 15 refers to the shortest distance from the second curved surface 12 to the vertex of the microlens 15 away from the second curved surface 12, which can be obtained by Figure 2 As shown, it can be understood to some extent.

[0071] According to the concept of the present application, the microlenses 15 are arranged in a ring structure, that is, the plane shape of the defocus area 20 is annular, so as to form a peripheral defocus structure. In the embodiment, the defocus area 20 formed by the microlenses 15 is in the form of multiple concentric circular rings with increasing diameters.

[0072] Further preferably, the spheres of the microlenses 15 of different circular rings can also have different diameters. The arrangement principle of the microlenses 15 with different diameters can follow that the diameters of the microlenses 15 on the circular rings closer to the inside in the radial direction of the second curved surface 12 are smaller, and the diameters of the microlenses 15 on the circular rings closer to the outside in the radial direction of the second curved surface 12 are larger; that is, the diameters of the microlenses 15 gradually increase in the direction outward in the radial direction.

[0073] Further preferably, the defocus amount of the defocus area 20 in the embodiment is +3.00D to +4.00D.

[0074] In addition, in the embodiment, the lens 100 further comprises a coating layer, which is coated on the overall outer surface of the defocus frame lens 100 to modify the lens 100.

[0075] In the present application, the material and process of the coating layer 40 can not be limited, and are generally selected according to the requirements of the user for the lens 100. For example, the user is a youth group, and such a lens 100 generally has higher requirements for its scratch resistance and needs to be more durable; or the use scene of the lens 100 is outdoor, so that the user can still have a clearer field of view through the lens 100 in strong wind or bad weather.

[0076] The coating layer can be single-layer or multi-layer, so as to stack coating layers 40 with different functions on the lens 100, thereby realizing functional improvement of the lens 100.

[0077] In summary, the myopia prevention and control lens 100 provided in Embodiment 1 of the present application has a four-quadrant defocus amount difference, and the defocus frame spectacle lens 100 includes a lens area 10 and a defocus area 20. The defocus area 20 includes a plurality of microlenses 15 arranged in a ring shape. The microlenses 15 are arranged on the second curved surface 12 and protrude relative to the second curved surface 12. The connecting line of the vertexes of the microlenses 15 forms a non-spherical surface, and at least the following effects are achieved:

[0078] 1. The myopia deepening is effectively prevented, and the ability and flexibility of the lens to prevent myopia deepening are improved.

[0079] 2. The aberration and deformation increase caused by the spherical design of the concave lens itself are effectively improved, and the dizziness caused by visual stimulation is reduced / eliminated.

[0080] Embodiment 2

[0081] Please refer to Figure 4 , Figure 4 The structural schematic diagram of the myopia prevention and control lens 100 provided in Embodiment 2 of the present application is different from that of Embodiment 1 in that:

[0082] The microlenses 15 of the defocus area 20 are arranged in a radial manner.

[0083] In this embodiment 2, the three-dimensional structure of the microlenses 15 can be a cylinder. In the radial direction of the second curved surface 12, the diameter of the cylinder located on the outer side is greater than the diameter of the cylinder located on the inner side. That is, in the direction of the radial outward, the diameter of the microlenses 15 gradually increases.

[0084] Preferably, the microlenses 15 are arranged at intervals, and the distance between the adjacent two microlenses 15 gradually increases in the radial outward direction in the circumferential direction or on the same circular ring.

[0085] Embodiment 3

[0086] Please refer to Figure 5 , Figure 5 The structural schematic diagram of the myopia prevention and control lens 100 provided in Embodiment 3 of the present application is different from that of Embodiments 1 and 2 in that:

[0087] The defocus area 20 formed by the arrangement of the microlenses 15 is a polygonal ring, and preferably, in this embodiment 2, as shown in Figure 5 , the defocus area 20 is a hexagonal ring.

[0088] Among them, the three-dimensional structure of the microlenses 15 forming the hexagonal ring can be a hexagonal prism, and the hexagonal prism has different heights.

[0089] Of course, other stereoscopic structure microlenses can also be used to form a polygonal ring to obtain a defocus area 20 with a peripheral defocus amount of +3.00D to +5.00D.

[0090] Embodiment 4

[0091] The embodiment also provides a pair of glasses, which comprises a glasses frame and a lens, wherein the lens is made of the defocus frame lens 100 of any one of the above-mentioned embodiments 1-3, so that the pair of glasses has the characteristics of lightness, thinness, anti-interference and high reliability, the curvature of the lens is better matched with the curvature of the glasses frame, and the lens is safe to wear. Good optical performance and aesthetic appearance are provided. The specific features are not repeated here.

[0092] Embodiment 5

[0093] Referring to Figures 7-9 The embodiment also provides a detection device for detecting the defocus frame lens 100 described in any one of the above-mentioned embodiments 1-3.

[0094] The detection device comprises a detection frame body 3, a lens clamping frame 4 arranged on the detection frame body 3 and clamping the myopia prevention lens, an eyeball simulation module 5 arranged on the detection frame body 3 and located on one side of the lens clamping frame 4, an observation module 6 arranged on the detection frame body 3 and located on the side of the lens clamping frame 4 away from the eyeball simulation module 5, and an image collection module 7 arranged on the detection frame body 3 and located on the side of the eyeball simulation module 5 away from the lens clamping frame 4.

[0095] The entire detection device is arranged to simulate the real object observation process, the eyeball 5 watches the observation module 6 through the lens clamped on the lens clamping frame 4, the appearance of the observation module 6 is finally reflected on the end of the eyeball 5 away from the observation module 6, and is collected through the image collection module 7, the observation effect of the lens at different positions is tested by moving the observation module 6, and the defocus amount of the lens at different quadrants is detected, so that the different refractive power distribution of the compound eyeball at different axial positions is obtained, and the entire detection process is faster and more convenient.

[0096] The detection frame body 3 is arranged horizontally, the lens clamping frame 4 is vertically and integrally arranged on the upper end of the detection frame body 3, and a semicircular lens placing groove 41 is arranged on the lens clamping frame 4.

[0097] The eyeball simulation module 5 comprises an eyeball placement platform 51 fixed on the upper end face of the detection frame body 3 by bolts, a simulation eyeball 52 connected to the inside of the eyeball placement platform 51 by a ball joint, and a driving assembly 53 arranged in the inside of the eyeball placement platform 51 to drive the simulation eyeball 52 to rotate, a perspective hole 511 is horizontally arranged in the middle of the eyeball placement platform 51, a ball hole 512 coaxial with the inner wall of the perspective hole 511 is arranged in the eyeball placement platform 51 to place and rotate the simulation eyeball 52, the driving assembly 53 comprises a driving ball 531 rollingly embedded in the eyeball placement platform 51, and vertical driving belts 532 and horizontal driving belts 533 arranged in the eyeball placement platform 51 and located at both ends of the driving ball 531, the driving ball 531 is located at the lower side of the simulation eyeball 52 and abuts against the simulation eyeball 52, the simulation eyeball 52 rotates under the friction of the driving ball 531, and the rotation direction of the simulation eyeball 52 is opposite to that of the driving ball 531, the vertical driving belts 532 and the horizontal driving belts 533 are small conveying belts and are controlled by micro motors, the vertical driving belts 532 are arranged vertically, the horizontal driving belts 533 are arranged horizontally, the vertical driving belts 532 and the horizontal driving belts 533 abut against the side ends of the driving ball 531 and drive the driving ball 531 to rotate by friction when running, thereby realizing the rotation of the simulation eyeball 52 like a normal human eye. The whole eyeball simulation module 5 can simulate the rotation of the eyeball, thereby obtaining more accurate detection data.

[0098] The image collection module 7 is a micro camera, and the image collection module 7 is fixed on the upper end of the detection frame body 3 by bolts and the shooting end is aligned with the simulation eyeball 52.

[0099] The observation module 6 comprises an observation platform 61 fixed vertically on the upper end face of the detection frame body 3 by bolts and facing the lens clamping frame 4 on one end face, an observation object 62 arranged on the observation platform 61 close to one end face of the lens clamping frame 4, and steel wire rope winders 63 fixed on the four corners of the observation platform 61 by bolts, the steel wire ropes on the steel wire rope winders 63 are fixed to the observation object 62, and the observation object 62 moves by winding and unwinding the steel wire ropes by the four steel wire rope winders 63.

[0100] The observation object 62 moves on one end face of the observation platform 61, the simulation eyeball 52 rotates with the movement of the observation object 62 and observes through the lens inserted into the lens placement groove 41, and in the whole process, the observation end of the micro camera shoots and records the picture reflected by the simulation eyeball 52, thereby detecting the lens. By setting the observation object 62 to be movable, the detection process is more in line with the actual situation, and the effect of the actual observation object is more complex, thereby improving the real situation of the detection and the detection accuracy.

[0101] The detection device provided by the embodiment can more accurately simulate the actual eyeball viewing effect and detect the off-focus frame spectacle lens, the detection process is more convenient and fast, and the detection result is more close to the truth and more accurate.

[0102] Further, those skilled in the art should understand that if all or part of the sub-modules involved in the off-focus lenses in embodiments 1-3 are combined, replaced, etc. by integration, simple change, mutual transformation, etc., the lenses or the glasses prepared therefrom are used to replace the corresponding components of the present application, which also falls within the protection scope of the present application.

[0103] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0104] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can modify, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A four-quadrant myopia control lens with different amounts of defocus, characterized in that: The lens area (10) and the defocus area (20); The lens area (10) has a first arc surface (11) facing the user's face and a second arc surface (12) away from the user's face, and the first arc surface (11) and the second arc surface (12) are oppositely arranged; The defocus area (20) is arranged on the second arc surface (12), and the defocus area (20) is formed by orderly arranging a plurality of micro-lenses (15) with different heights; The defocus area (20) includes a central optical area in the central region and four quadrant areas respectively located in the upper, lower, temporal and nasal peripheral regions of the lens; the defocus amount ratio of the four quadrant areas is temporal quadrant area > nasal quadrant area > lower quadrant area > upper quadrant area > central optical area; The surface formed by the lines connecting the vertices of the micro-lenses (15) away from the second arc surface (12) is a non-spherical surface; The height of the micro-lens (15) is the shortest distance from the second arc surface (12) to the vertex / top surface of the micro-lens (15), and the refractive power of the micro-lens (15) in the defocus area (20) is in the range of +3.00D-+4.00D; The quadrant areas are prepared with different positive values to match the refractive power of each quadrant of the retina periphery.

2. The myopia prevention and control lens with different defocus amounts in four quadrants according to claim 1, wherein: The three-dimensional structure of the micro-lens (15) is a hemisphere, a semi-elliptical sphere, a cylinder, a hexagonal prism or a triangular prism.

3. The myopia prevention and control lens with different defocus amounts in four quadrants according to claim 1, wherein: The defocus area (20) formed by the arrangement of the micro-lenses (15) is in the form of a plurality of concentric circular rings with increasing diameters; The three-dimensional structure of the micro-lenses (15) forming the circular rings is a hemisphere and a semi-elliptical sphere, and the diameter of the micro-lens (15) located on the outer side in the radial direction is greater than that of the micro-lens (15) located on the inner side.

4. The myopia prevention and control lens with different defocus amounts in four quadrants according to claim 1, wherein: The micro-lenses (15) in the defocus area (20) are arranged in a radial pattern; The three-dimensional structure of the micro-lens (15) is a cylinder, and the diameter of the cylinder located on the outer side in the radial direction is greater than that of the cylinder located on the inner side.

5. The myopia prevention and control lens with different defocus amounts in four quadrants according to claim 1, wherein: The defocus area (20) formed by the arrangement of the micro-lenses (15) is in the form of a polygonal ring; The three-dimensional structure of the micro-lenses (15) forming the polygonal ring is a prism.

6. The myopia prevention and control lens with different defocus amounts in four quadrants according to claim 1, wherein: The micro-lenses (15) are arranged at intervals, and the distance between two adjacent micro-lenses (15) in the circumferential direction gradually increases radially outward.

7. A detection device for detecting the myopia prevention and control lens with different defocus amounts in four quadrants according to any one of claims 1-6, wherein: ​ The device comprises a detection frame (3), a lens clamping frame (4) arranged on the detection frame (3) and clamping the myopia prevention lens, an eyeball simulation module (5) arranged on the detection frame (3) and located on one side of the lens clamping frame (4), an observation module (6) arranged on the side of the lens clamping frame (4) away from the eyeball simulation module (5), and an image collection module (7) arranged on the side of the eyeball simulation module (5) away from the lens clamping frame (4).

8. The detection device according to claim 7, characterized in that: The eyeball simulation module (5) comprises an eyeball placement platform (51), a simulation eyeball (52) connected to the inside of the eyeball placement platform (51), and a driving assembly (53) arranged in the inside of the eyeball placement platform (51) to drive the simulation eyeball (52) to rotate, the eyeball placement platform (51) has a through-type perspective hole (511) horizontally formed in the middle, the eyeball placement platform (51) has a ball hole (512) coaxially formed in the inner wall of the perspective hole (511) for placing and rotating the simulation eyeball (52), the driving assembly (53) comprises a driving ball (531) rollingly embedded in the eyeball placement platform (51), and a vertical driving belt (532) and a horizontal driving belt (533) arranged in the eyeball placement platform (51) and located at both ends of the driving ball (531), the driving ball (531) is located below the simulation eyeball (52) and abuts against the simulation eyeball (52), the simulation eyeball (52) rotates in the opposite direction with the driving ball (531), the vertical driving belt (532) and the horizontal driving belt (533) are both small conveyor belts and are vertically and horizontally arranged respectively, the vertical driving belt (532) and the horizontal driving belt (533) abut against the side ends of the driving ball (531) and drive the driving ball (531) to rotate by friction when running.

9. The detection device according to claim 7, characterized in that: The observation module (6) comprises an observation platform (61) vertically arranged and having one end facing the lens clamping frame (4), an observation object (62) arranged on the end face of the observation platform (61) close to the lens clamping frame (4), and a steel wire reel (63) arranged at each corner of the observation platform (61), the steel wire on the steel wire reel (63) is fixed to the observation object (62), and the observation object (62) moves with the reeling and unreeling of the steel wire by the four steel wire reels (63).

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