Vision prevention and control optical lens
By setting up multiple defocus units and correction areas in the vision correction lens, the problems of visual deviation and vision loss are solved, and the visual prevention and control effect is achieved at different perspectives, reducing the feeling of dizziness.
Patent Information
- Application Number
- CN202411227356.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2024-12-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the wearer looks down or around, the defocusing unit causes visual deviation, which may cause dizziness in severe cases and cannot effectively prevent and control vision loss.
Design an optical lens for vision prevention and control, including first and second optical correction areas, by setting the first and second defocus correction areas and multiple defocus units, the optical focus is imaged in front of the retina, and through different diopters The defocusing unit keeps the eye axis sensitive, eliminates visual deviations and extends the eye axis length.
Effectively eliminate the visual deviation of the defocusing unit on the eyeball, maintain the original visual prevention and control effect, reduce the wearer's dizziness at different perspectives, and maintain the visual prevention and control effect during the wear process.
Smart Images
Figure CN119225045A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of vision correction, and in particular to a vision control optical lens. Background Art
[0002] At present, in order to solve the problem that the optical focus of the periphery of the lens falls behind the retina after the user wears myopia glasses, causing the eye axis to stretch, which in turn causes more serious vision loss, a defocus unit is provided on the myopia glasses. The defocus unit can make the optical focus fall in front of the retina. Although the defocus unit provided on the lens can achieve the effect of vision prevention and control, the user's eyeballs need to look down when climbing mountains or stairs. At this time, the macular area of the eyeball faces the defocus unit provided on the periphery of the vision correction area to capture the image, and visual deviation will occur when capturing the image through the defocus unit. In severe cases, it will cause the user to have a strong sense of dizziness. The above problems will exist when the user looks around at a certain angle. Summary of the invention
[0003] The main purpose of the present invention is to provide a vision control optical lens, which aims to solve the problem that when a lens with a defocusing unit is put into use, it affects the wearer's side vision.
[0004] To achieve the above-mentioned purpose, the present invention provides a vision control optical lens, comprising:
[0005] An optical substrate having a first optical correction area and a second optical correction area, wherein the first optical correction area is located in the middle of the optical substrate so that an image of a visual object is formed on the retina, and the second optical correction area is arranged on the outer peripheral side of the first optical correction area and is spaced from the first optical correction area to form a first defocus correction area;
[0006] The optical substrate further has a second defocus correction area, which is arranged at the outer peripheral side of the second optical correction area. A plurality of defocus units are arranged in the first defocus correction area and the second defocus correction area, and the plurality of defocus units are used to image objects viewed at the outer peripheral side of the first optical correction area in front of the retina and induce the length of the eye axis to be adjustable; the second optical correction area is used to assist the eyeball to view objects toward the first defocus correction area, the second optical correction area and the second defocus correction area at the outer peripheral side of the first optical correction area, so as to eliminate the visual deviation caused by the plurality of defocus units to the eyeball;
[0007] At least some of the defocus units in the first defocus correction area and / or the second defocus correction area have different refractive powers, and the multiple defocus units with different refractive powers are used to make the eyeball continuously sensitive to defocus stimulation and induce the length of the eye axis to shorten.
[0008] In one embodiment, at least one of the center of the first defocus correction zone and the center of the second defocus correction zone is offset relative to the center of the first optical correction zone.
[0009] In one embodiment, the center of the first defocus correction area is offset in the up-down direction relative to the center of the first optical correction area; and / or
[0010] The center of the second defocus correction area is offset in the up-down direction relative to the center of the first optical correction area.
[0011] In one embodiment, the second optical correction zone includes an inner ring edge close to the first defocus correction zone and an outer ring edge close to the second defocus correction zone, the center of the inner ring edge is offset upward compared to the center of the first optical correction zone, and / or
[0012] The center of the outer annular edge is offset downwardly from the center of the first optical correction zone.
[0013] In one embodiment, the distance between the second optical correction area and the first optical correction area is L1, and L1 satisfies the following formula: L1 = r*tan(c1);
[0014] Among them, r represents the distance between the rotation center of the eyeball and the lens;
[0015] c1 represents the angle of eyeball rotation, and the rotation range of c1 is 5° to 30°.
[0016] In one embodiment, the plurality of defocus units in the first defocus correction zone and / or the second defocus correction zone are arranged around to form a defocus portion, the defocus portion is surrounded by a hollow portion, the refractive powers of some of the defocus units forming the defocus portion are different, the number of the defocus portions is multiple, and the plurality of defocus portions are arranged in an array.
[0017] In one embodiment, the hollow portions in two adjacent columns of the defocusing portions are arranged alternately, and two adjacent defocusing portions share at least one defocusing unit.
[0018] In one embodiment, the refractive power of the plurality of defocus units in the first defocus correction area is different from the refractive power of the plurality of defocus units in the second defocus correction area.
[0019] In one embodiment, the first defocus correction zone and / or the second defocus correction zone both have a farsighted portion and a nearsighted portion, the farsighted portion is arranged above the first optical correction zone, and the nearsighted portion is arranged below the first optical correction zone.
[0020] In one embodiment, the density of the plurality of defocusing units in the telescopic portion is gradually increased along the direction from the center to the edge of the optical substrate; and / or
[0021] The density of the multiple defocusing units in the near vision portion is gradually reduced along the direction from the center to the edge of the optical substrate.
[0022] The technical solution of the present invention forms a first defocus correction zone by arranging the second optical correction zone at intervals on the outer peripheral side of the second optical correction zone, and arranges a plurality of defocus units in the first defocus correction zone, and arranges at least some of the plurality of defocus units to have different refractive powers, so that when the wearer wears the lens, not only can the visual deviation caused by the defocus unit to the eyeball be eliminated when viewing objects from other perspectives, but the original defocus effect can also be maintained during normal viewing, so as to maintain the original vision prevention and control effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0024] Figure 1 A schematic structural diagram of an embodiment of a vision control optical lens provided by the present invention;
[0025] Figure 2 for Figure 1 A partial enlarged view of the middle A;
[0026] Figure 3 A schematic diagram of the structure of the vision control optical lens provided by the present invention;
[0027] Figure 4 This is a schematic diagram of the position relationship between the vision control optical lens of the present invention and the eyeball when worn.
[0028] Description of Figure Numbers:
[0029] 10. Optical substrate; 11. First optical correction area; 12. Second optical correction area; 13. Defocus correction area; 13a. First defocus correction area; 13b. Second defocus correction area; 131. Defocus unit; 132. Defocus portion; 1321. Hollow portion.
[0030] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0034] At present, in order to prevent the wearer's vision from continuing to decline after wearing optical corrective lenses, a defocus unit is designed to be provided on the surface of the lens. That is, a microstructure (microlens, cylinder, diffraction slope, etc.) is used to generate additional refractive power, thereby suppressing peripheral hyperopic defocus. When the wearer wears the lens with a defocus unit and looks down, up, left, right, or around, the vision will appear blurred due to the defocus unit, and the wearer may also cause dizziness.
[0035] The present invention provides a vision control optical lens.
[0036] See also Figures 1 to 3As shown, in one embodiment of the present invention, the vision control optical lens includes an optical substrate 10, having a first optical correction area 11 and a second optical correction area 12, the first optical correction area 11 is located in the middle of the optical substrate 10, so that the visual object is imaged on the retina, the second optical correction area 12 is arranged on the outer peripheral side of the first optical correction area 11, and is spaced from the first optical correction area 11 to form a first defocus correction area 13a; the optical substrate 10 also has a second defocus correction area 13b, the second defocus correction area 13b is arranged on the outer peripheral side of the second optical correction area 12, and a plurality of defocus units 1 are arranged in the first defocus correction area 13a and the second defocus correction area 13b. 31, the multiple defocus units 131 are used to image the objects on the peripheral side of the first optical correction zone 11 in front of the retina and induce the length of the eye axis to be adjustable; the second optical correction zone 12 is used to assist the eyeball to view objects toward the first defocus correction zone 13a, the second optical correction zone 12 and the second defocus correction zone 13b on the peripheral side of the first optical correction zone 11, so as to eliminate the visual deviation caused by the multiple defocus units 131 to the eyeball; the refractive powers of at least some of the defocus units 131 in the first defocus correction zone 13a and / or the second defocus correction zone 13b are different, and the multiple defocus units 131 with different refractive powers are used to make the eyeball continuously sensitive to the defocus stimulation and induce the length of the eye axis to be shortened.
[0037] In the technical solution of the present invention, the optical lens includes an optical substrate 10, wherein the optical substrate 10 includes a first optical correction area 11 and a second optical correction area 12, wherein the first optical correction area 11 is arranged in the middle position of the optical substrate 10, when the user wears the optical lens, the first optical correction area 11 corresponds to the macular area of the user's eyeball, the refractive power of the first optical correction area 11 is consistent with the refractive power required by the user's eyeball or slightly lower than the required refractive power, the second optical correction area 12 is arranged on the outer peripheral side of the first optical correction area 11, and is spaced apart from the first optical correction area 11 to form a first defocus correction area 13a, the optical substrate 10 also includes a second defocus correction area 13b, and the second defocus correction area 13b is arranged on the outer periphery of the second optical correction area 12 That is to say, the first defocus correction area 13a, the second optical correction area 12 and the second defocus correction area 13b are sequentially arranged around the first optical correction area 11 on the optical substrate 10, wherein the first defocus correction area 13a and the second defocus correction area 13b are each provided with a plurality of defocus units 131, and the defocus units 131 on both are used to image the peripheral side of the first optical correction area 11 in front of the retina and induce the length of the eye axis to be adjustable. In the present technical solution, since the second optical correction area 12 is arranged on the peripheral side of the first optical correction area 11 and is spaced apart from the first optical correction area 11, when the user looks around toward the peripheral side of the first optical correction area 11, the user can see the object through the second optical correction area 12, and the second optical correction area 12 and the first optical correction area 11 are spaced apart from each other. The refractive power of the first optical correction zone 11 is consistent with or slightly greater than the refractive power of the first optical correction zone 11 (because the distance between the second optical correction zone 12 and the eyeball is slightly farther than the distance between the first optical correction zone 11 and the eyeball). Therefore, in the present technical solution, the second optical correction zone 12 has the function of assisting the eyeball to see objects toward the first defocus correction zone 13a, the second optical correction zone 12, and the second defocus correction zone 13b on the peripheral side of the first optical correction zone 11, and eliminating the visual deviation caused to the eyeball by the multiple defocus units 131 on the first defocus correction zone 13a or the second defocus correction zone 13b. In order to enable the defocus unit 131 to provide a better defocusing effect, the refractive power of some of the multiple defocus units 131 may be different, and the refractive power may be different. The different multiple defocus units 131 are used to make the eyeball continuously sensitive to the defocus stimulation and induce the length of the eye axis to be shortened. At least some of the multiple defocus units 131 in the first defocus correction area 13a and / or the second defocus correction area 13b have different refractive powers. The purpose of setting the different refractive powers of some of the defocus units 131 is to prevent the user from forming a habit with the defocus stimulation provided by the defocus unit 131 after wearing the lens for a period of time, which causes the defocus unit 131 to lose its original vision control function. The different refractive powers of some of the defocus units 131 will cause the object to be imaged at different positions in front of the retina, so that the user can remain continuously sensitive to the defocus stimulation. In addition, due to the defocus units 131 with different refractive powers,It will produce stronger defocus stimulation to the eyeball, thereby inducing a greater chance of eye axis contraction, thus making the prevention and control of vision better.
[0038] In one embodiment, at least one of the center of the first defocus correction zone 13a and the center of the second defocus correction zone 13b is offset relative to the center of the first optical correction zone 11. Considering the user's eye habits, for example, when the user wears the optical lens and works through multiple computer screens, he often needs to look at one of them. At this time, the center of the first defocus correction zone 13a or the center of the second defocus correction zone 13b can be offset relative to the center of the first optical correction zone 11, or the above two can be offset at the same time, so that the width of the second optical correction zone 12 that the user often needs to use for looking at objects is increased (the width here is the distance from the center to the edge of the second optical correction zone 12 along the optical substrate 10).
[0039] In another embodiment, the center of the first defocus correction zone 13a is offset in the up-down direction relative to the center of the first optical correction zone 11; and / or the center of the second defocus correction zone 13b is offset in the up-down direction relative to the center of the first optical correction zone 11. In this embodiment, considering that users often use the angle of looking down or looking up to see things in their daily lives, such as when users are climbing mountains, reading books, playing electronic products, and looking at computer screens, etc., the user's eyes are basically at a downward angle, so the width of the second optical correction zone 12 below the first optical correction zone 11 can be increased. Specifically, the center of the first defocus correction zone 13a can be offset in the up-down direction relative to the center of the first optical correction zone 11. Assuming that for the consideration of the downward effect, the center of the first defocus correction zone 13a can be offset upward relative to the center of the first optical correction zone 11 in the up-down direction. At this time, the second optical correction zone 12 is eccentric as a whole, that is, the second optical correction zone is located below the first optical correction zone 11. In one embodiment, the width of the first optical correction zone 12 is increased, while the width of the second optical correction zone 12 located above the first optical correction zone 11 is decreased; secondly, also for the consideration of the overhead view effect, the center of the second defocus correction zone 13b can be shifted downward relative to the center of the first optical correction zone 11 in the up-down direction, which can also increase the width of the second optical correction zone 12 located below the first optical correction zone 11 and decrease the width of the second optical correction zone 12 located above the first optical correction zone 11; conversely, assuming that for the consideration of the upward view effect, the first defocus correction zone 13a or the second defocus correction zone 13b can be shifted in the opposite way to the above; in other embodiments, in order to further improve the matching degree between the optical lens and the user's eye habits, the above two schemes can be used simultaneously.
[0040] In another embodiment, the second optical correction zone 12 includes an inner ring edge close to the first defocus correction zone 13a and an outer ring edge close to the second defocus correction zone 13b, the center of the inner ring edge is offset upward compared to the center of the first optical correction zone 11, and / or the center of the outer ring edge is offset downward compared to the center of the first optical correction zone 11. The second optical correction zone 12 includes an inner ring edge close to the first defocus correction zone 13a and an outer ring edge close to the second defocus correction zone 13b, the center of the inner ring edge is offset upward compared to the center of the first optical correction zone 11, and / or the center of the outer ring edge is offset downward compared to the center of the first optical correction zone 11. Due to the eye habits of most users, the above-mentioned setting method can be used to increase the width of the second optical correction zone 12 below the first optical correction zone 11, so as to achieve the purpose of expanding the upward viewing area, so that the user can better look down through the second optical correction zone 12.
[0041] In one embodiment, if Figure 4 As shown, the second optical correction zone 12 is arranged in the defocus correction zone 13, and the distance between the second optical correction zone 12 and the first optical correction zone 11 is L1, and L1 satisfies the following formula: L1 = r*tan(c1); wherein r represents the distance between the rotation center of the eyeball and the lens; c1 represents the angle of eyeball rotation, and the rotation range of c1 is 5° to 30°. In this embodiment, the second optical correction area 12 is completely arranged in the defocus correction area 13, that is, the outer peripheral side of the second optical correction area 12 is surrounded by a defocus unit 131, which can effectively improve the effect of preventing and controlling vision when the user deviates through the second optical correction area 12, wherein the second optical correction area 12 is spaced L1 from the first optical correction area 11, and L1 satisfies the following formula: L1 = r*tan(c1); wherein r represents the distance between the rotation center of the eyeball and the lens; c1 represents the angle of eyeball rotation, and the rotation range of c1 is 5° to 20°; the data of the c1 rotation angle is obtained by referring to the eyeball when looking at objects to the side relative to the eyeball when looking straight ahead, for example, when the user is reading a book or checking a book, When looking at electronic products, the user needs to maintain a sitting posture to protect the lumbar or cervical spine, so the user's eyeballs will turn downward by 5° or 10°, assuming 5°, and the distance between the eyeball and the lens is 30 mm, so L1 = 30mm*tan(5°) = 2.625mm; or, when the user is mountain climbing or looking at the ground, the eyeball turns at an angle of 30°, so L1 = 30mm*tan(30°) = 15.75mm; since the second optical correction area 12 has a width along the direction from the center to the edge of the optical substrate 10, the width of the second optical correction area 12 can range from 2.625mm to 15.75mm.
[0042] In another embodiment, at least two defocusing units 131 among the multiple defocusing units 131 are partially stacked to form a stacked portion (not shown in the figure), and the refractive power of the stacked portion is greater than the refractive power of a single defocusing unit 131. The stacked portion is used to make the eyeball continue to be sensitive to defocus stimulation and induce the length of the eye axis to shorten. In this embodiment, at least two of the multiple defocus units 131 arranged in the first defocus correction area 13a and / or the second defocus correction area 13b are partially stacked to form a stacked portion, the refractive power of the stacked portion is greater than the refractive power of a single defocus unit 131, the refractive power of the stacked portion is at least greater than the refractive power of a single defocus unit 131, and is less than or equal to the sum of the refractive powers of the two defocus units 131. In this embodiment, the two defocus units 131 having the stacked portion may be referred to as a defocus group, and the first defocus correction area 13a and / or the second defocus correction area 13b may be irregularly laid, or staggered, or in the first defocus correction area 13a and / or the second defocus correction area 13b. The correction area 13a and / or the second defocus correction area 13b are both paved with multiple defocus groups. In other embodiments, the defocus units 131 adjacent to each other in the three defocus units 131 may be partially stacked to form a defocus group. The defocus group may also be composed of the defocus units 131 with different refractive powers as mentioned above. No excessive restrictions are made here. The defocus group thus arranged includes at least two defocus units 131 and a stacking portion. The refractive power of the stacking portion is different from that of the defocus unit 131, so that the same effect as that produced by the defocus unit 131 in the above embodiment can be achieved, and a stronger defocus stimulation can be produced on the eyeball, thereby increasing the probability of inducing the eyeball axis to shrink, thereby achieving a better vision prevention and control effect.
[0043] In one embodiment, if Figure 2As shown, a plurality of defocusing units 131 are arranged in a surrounding manner to form a defocusing portion 132, and a hollow portion 1321 is formed around the defocusing portion 132. There are a plurality of defocusing portions 132, and the plurality of defocusing portions 132 are arranged in an array. In order to avoid that the area of the vacant optical substrate 10 between the plurality of defocusing units 131 is small and irregular when the plurality of defocusing units 131 are laid close to the plurality of defocusing units 131, which has no effect on vision correction and may also cause a decrease in the visual quality of the user, in this embodiment, a plurality of defocusing units 131 are arranged in a surrounding manner on the optical substrate 10, and the plurality of defocusing units 131 arranged in a surrounding manner form a defocusing portion 132 and a hollow portion 1321, wherein the plurality of defocusing portions 132 are laid in a matrix, or laid in sequence at intervals. In this embodiment, matrix laying is used for illustration, so that the laid defocusing portions 132 can maintain vision when put into use. The correction effect can also provide a better defocusing effect. In order to make the defocusing portion 132 also able to keep the eyeball continuously sensitive to the defocusing stimulation, the refractive power of at least one of the multiple defocusing units 131 in the defocusing portion 132 can be set to be different. Of course, the effect is better when the refractive powers of the multiple defocusing units 131 are different. In other embodiments, the multiple defocusing units 131 that surround the defocusing portion 132 can increase the refractive power setting sequentially along the surrounding path, or the refractive power of two adjacent defocusing units 131 can be set to be different, or two defocusing units 131 with different refractive powers can be set alternately.
[0044] In another embodiment, the defocusing portion 132 may also be composed of a plurality of defocusing groups composed of at least two partially stacked defocusing units 131 in the above-mentioned embodiment. In the present embodiment, since the defocusing group includes at least two defocusing units 131 and a stacking portion, assuming that the two defocusing units 131 have the same refractive power, but the refractive power of the stacking portion is different from that of the two defocusing units 131, then the defocusing unit 131 having at least a partial refractive power different from that of the defocusing portion 132 in the above-mentioned embodiment can also play the role of shortening the axial length of the dominant eye. Secondly, assuming that the refractive powers of the two defocusing units 131 are different, and the refractive powers of the stacking portion are respectively different from those of the two defocusing units 131 to form a third refractive power, this can further induce the shortening of the axial length of the eye.
[0045] Specifically, in the above embodiment, after the defocusing unit 131 forms the defocusing portion 132, a hollow portion 1321 is simultaneously formed, wherein the spacing between two adjacent hollow portions 1321 is L2, and L2 satisfies the following formula: L2=r*tan(c2); L2 represents the length of the arc, that is, the moving distance on the lens; r represents the distance between the rotation center of the eyeball and the lens; c2 represents the angle of rotation of the eyeball, and the rotation range of c2 is 0.1° to 1°; the rotation range of c2 is based on the minimum rotation angle of the human eye. In order to facilitate the human eye to see objects toward the side through the hollow portion 1321 when rotating, the value range of L2 is: 0.524mm to 5.24mm. When the value of L2 is smaller, the defocusing portion 132 in the defocus correction area 13 is laid out in a larger area, and vice versa.
[0046] In one embodiment, the hollow portions 1321 in two adjacent columns of defocusing portions 132 are arranged alternately. In this embodiment, since the multiple defocusing portions 132 are arranged in a matrix and the multiple defocusing portions 132 are in the vertical direction of the lens, the hollow portions 1321 formed by the defocusing portions 132 in adjacent rows are arranged alternately in the vertical direction.
[0047] More specifically, two adjacent defocusing portions 132 share at least one defocusing unit 131. Two adjacent defocusing portions 132 share at least the same defocusing unit 131. In the present embodiment, two adjacent defocusing portions 132 share one defocusing unit 131, and the defocusing portions 132 of adjacent rows and columns are arranged in a row, and in the present solution, the defocusing portion 132 is surrounded by six defocusing units 131, wherein three adjacent defocusing units 131 of two adjacent defocusing portions 132 form two stacking portions, which are respectively a first stacking portion formed by partially stacking two adjacent defocusing units 131, and another one of the three defocusing units 131 and the defocusing units 131 stacked with the two parts are stacked here to form a second stacking portion. In the present embodiment, the refractive powers of the first stacking portion and the second stacking portion are different, so as to achieve a better inducement effect on the eyeball. In other embodiments, the defocusing portions 132 of adjacent rows share two defocusing units 131, which can not only satisfy the requirement of reserving enough hollow portions 1321, but also meet the requirement of defocusing.
[0048] In other embodiments, the hollow portion 1321 is arranged in a circular shape, and at least one side of the multiple defocusing units 131 surrounding the hollow portion 1321 is arranged in an arc shape (not shown in the figure), so that the multiple defocusing units 131 surround the circular hollow portion 1321, wherein the multiple defocusing units 131 can be in close contact to form a circular hollow portion 1321, or can be arranged in the form of intervals to surround the hollow portion 1321, and no further restrictions are made here.
[0049] In one embodiment, the first defocus correction zone 13a and the second defocus correction zone 13b respectively have a farsighted portion and a nearsighted portion (not shown in the figure), the farsighted portion is arranged above the first optical correction zone 11, and the nearsighted portion is arranged below the first optical correction zone 11 and close to the second optical correction zone 12. In order to take into account the use habits of human eyes, the optical substrate 10 is used as a reference when worn by the user. Since the human eye usually looks at objects with an upward angle when farsighted (compared with normal vision), in this embodiment, based on the perspective of human eye use habits, the first defocus correction zone 13a and the second defocus correction zone 13b above the first optical correction zone 11 are both provided with a farsighted portion, and since the human eye usually looks at objects with a downward angle when nearsighted, in this embodiment, the first defocus correction zone 13a and the second defocus correction zone 13b below the first optical correction zone 11 are both provided with a nearsighted portion, wherein the farsighted portion is arranged opposite to the nearsighted portion.
[0050] Specifically, the density of the multiple defocus units 131 in the far vision portion is gradually increased along the direction from the center to the edge of the optical substrate 10; and / or the density of the multiple defocus units 131 in the near vision portion is gradually decreased along the direction from the center to the edge of the optical substrate 10. In this embodiment, the density of the multiple defocus units 131 in the far vision portion is gradually increased along the direction from the center to the edge of the optical substrate 10. When setting the defocus units 131, you can refer to the following settings, such as gradually reducing the diameter of the defocus unit 131 along the direction from the center to the edge of the optical substrate 10, or gradually increasing the refractive power of the defocus unit 131 along the direction from the center to the edge of the optical substrate 10, or mixing the above two settings. When setting the defocus unit of the near vision portion, you can refer to the above content to gradually increase the diameter of the defocus unit 131 along the direction from the center to the edge of the optical substrate 10, or gradually increase the refractive power of the defocus unit 131 along the direction from the center to the edge of the optical substrate 10. The refractive power of 131 is gradually decreased from the center to the edge of the optical substrate 10, or the above two settings are mixed and used. The density of the defocus unit 131 in the farsighted part is gradually increased from the center to the edge of the optical substrate 10 because the vision of most users is relatively good at a distance and does not require too many defocusing structures to correct their vision. On the contrary, the density of the defocus unit 131 in the myopia part is gradually decreased from the center to the edge of the optical substrate 10 because when the user is myopic, the eyes need more correction to ensure that nearby objects are clearly visible. This area usually requires more positive refractive power so that the eyes can correctly focus light on the retina.
[0051] In one embodiment, the diopter of two adjacent defocus units 131 differs by 0 to 3D. In this embodiment, the diopter of two adjacent defocus units 131 may be the same, or may differ by 0.5D, 2D, or 3D, without making too many restrictions here. When the diopter of two adjacent defocus units 131 is the same, it is easy to manufacture, and when the diopter of two adjacent defocus units 131 is different, the defocus stimulation formed by the defocus unit 131 arranged in the first defocus correction area 13a and / or the second defocus correction area 13b on the eyeball can be greatly improved, so that the eyeball maintains continuous sensitivity to the defocus stimulation.
[0052] The distance between two adjacent defocusing units 131 is 0 to 5 mm. In this embodiment, the distance between two adjacent defocusing units 131 is 1 mm. In other embodiments, the distance between two adjacent defocusing units 131 may be 0 mm or 5 mm (not shown in the figure).
[0053] In one embodiment, the diopter of the defocusing unit 131 is 0.5 to 5 D. In this embodiment, since some defocusing units 131 have different diopters, in this embodiment, the diopter of some defocusing units 131 may be 0.5 D, 1.0 D, 2.0 D, 4.0 D or 5.0 D, and no excessive requirements are made here.
[0054] In one embodiment, the multiple defocus units 131 in the first defocus correction zone 13a can be arranged in the manner of any of the above-mentioned embodiments, and can also be used in combination with currently available defocus units 131 of different shapes. Secondly, the multiple defocus units 131 in the second defocus correction zone 13b can also be arranged in the manner of any of the above-mentioned embodiments, and can also be used in combination with currently available defocus units 131 of different shapes. Among them, the multiple defocus units 131 in the first defocus correction zone 13a and the multiple defocus units 131 in the second defocus correction zone 13b can adopt the same setting or different settings, and no excessive limitations are made here.
[0055] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A vision control optical lens, characterized in that: include: An optical substrate having a first optical correction area and a second optical correction area, wherein the first optical correction area is located in the middle of the optical substrate so that an image of a visual object is formed on the retina, and the second optical correction area is arranged on the outer peripheral side of the first optical correction area and is spaced from the first optical correction area to form a first defocus correction area; The optical substrate further has a second defocus correction area, which is arranged at the outer peripheral side of the second optical correction area. A plurality of defocus units are arranged in the first defocus correction area and the second defocus correction area, and the plurality of defocus units are used to image objects viewed at the outer peripheral side of the first optical correction area in front of the retina and induce the length of the eye axis to be adjustable; the second optical correction area is used to assist the eyeball to view objects toward the first defocus correction area, the second optical correction area and the second defocus correction area at the outer peripheral side of the first optical correction area, so as to eliminate the visual deviation caused by the plurality of defocus units to the eyeball; At least some of the defocus units in the first defocus correction area and / or the second defocus correction area have different refractive powers, and the multiple defocus units with different refractive powers are used to make the eyeball continuously sensitive to defocus stimulation and induce the length of the eye axis to shorten.
2. The vision control optical lens according to claim 1, characterized in that: At least one of a center of the first defocus correction zone and a center of the second defocus correction zone is offset relative to a center of the first optical correction zone.
3. The vision control optical lens according to claim 2, characterized in that: The center of the first defocus correction area is offset in the up-down direction relative to the center of the first optical correction area; and / or The center of the second defocus correction area is offset in the up-down direction relative to the center of the first optical correction area.
4. The vision control optical lens according to claim 1, characterized in that: The second optical correction zone includes an inner ring edge close to the first defocus correction zone and an outer ring edge close to the second defocus correction zone, the center of the inner ring edge is offset upward compared to the center of the first optical correction zone, and / or The center of the outer annular edge is offset downwardly from the center of the first optical correction zone.
5. The vision control optical lens according to claim 1, characterized in that: The distance between the second optical correction area and the first optical correction area is L1, and L1 satisfies the following formula: L1 = r*tan(c1); Among them, r represents the distance between the rotation center of the eyeball and the lens; c1 represents the angle of eyeball rotation, and the rotation range of c1 is 5° to 30°.
6. The vision control optical lens according to claim 1, characterized in that: The multiple defocus units in the first defocus correction area and / or the second defocus correction area are arranged around to form a defocus portion, and the defocus portion is surrounded by a hollow portion. The refractive powers of the defocus units forming the defocus portion are different. The number of the defocus portions is multiple, and the multiple defocus portions are arranged in an array.
7. The vision control optical lens according to claim 6, characterized in that: The hollow portions in two adjacent columns of the defocusing portions are arranged alternately, and two adjacent defocusing portions at least share one defocusing unit.
8. The vision control optical lens according to claim 1, characterized in that: The refractive power of the multiple defocus units in the first defocus correction area is different from the refractive power of the multiple defocus units in the second defocus correction area.
9. The vision control optical lens according to any one of claims 1 to 8, characterized in that: The first defocus correction zone and / or the second defocus correction zone both have a farsighted portion and a nearsighted portion, the farsighted portion is arranged above the first optical correction zone, and the nearsighted portion is arranged below the first optical correction zone.
10. The vision control optical lens according to claim 9, characterized in that: The density of the plurality of defocusing units in the telescopic portion is gradually increased along the direction from the center to the edge of the optical substrate; and / or The density of the multiple defocusing units in the near vision portion is gradually reduced along the direction from the center to the edge of the optical substrate.