CN115145052A

CN115145052A - Ophthalmic lens and frame glasses with same

Info

Publication number: CN115145052A
Application number: CN202210890733.1A
Authority: CN
Inventors: 不公告发明人
Original assignee: Fitland Ltd; Zhuhai Fitland Medical Technology Co ltd
Current assignee: Fitland Ltd; Zhuhai Fitland Medical Technology Co ltd
Priority date: 2022-05-30
Filing date: 2022-07-27
Publication date: 2022-10-04
Also published as: CN218524972U; CN117250773A; CN117215092A; CN115202072A; CN218547163U

Abstract

The application provides an ophthalmic lens and a frame glasses with the same. The ophthalmic lens comprises a plurality of first refractive zones and a plurality of second refractive zones, the plurality of first refractive zones being closer to a center of the ophthalmic lens than the plurality of second refractive zones, an incident light beam passing through the plurality of first refractive zones projecting on a region between 10 and 20 degrees beside a fovea of a retina of the wearer, a spacing between the plurality of second refractive zones being greater than a spacing between the plurality of first refractive zones, a region of the ophthalmic lens other than the plurality of first refractive zones and the plurality of second refractive zones having a corrective refractive power based on a refractive error of the corrected eye, and the plurality of first refractive zones and the plurality of second refractive zones each having a refractive power different from the corrective refractive power. The high-density myopic defocus area is arranged near the central optical area to perform the myopic defocus formed by intensive light addition, so that more stimulation can be given to the retina, and the elongation of the axis of the eye can be inhibited.

Description

Ophthalmic lens and frame glasses with same

Technical Field

The present application relates to the technical field of ophthalmic lenses, and in particular, to an ophthalmic lens having a plurality of micro defocus areas, and frame glasses having the same.

Background

Refractive errors of the human eye include myopia, hyperopia, astigmatism, and the like, with myopia being the most common refractive error, particularly prevalent in adolescents. When the eyes are in a static state of regulation, external parallel light rays pass through a dioptric system of the eyes and are focused in front of the retina but not on the fovea of the macula lutea, so that a patient cannot see a distant object clearly, and myopia occurs; that is, myopia occurs when the axial length of the eye is greater than the focal length of the optical system of the eye.

Ophthalmic devices such as frame lenses or contact lenses are commonly used to correct or improve a patient's vision, such as correcting myopia using negative lenses and correcting hyperopia using positive lenses. Conventional ophthalmic lenses for myopia correction are single vision (monofocal) sphere lenses, i.e. the center-to-edge power of the lens is the same. The Petzval surface of the optimal focusing surface generated by the single-sphere lens is spherical, and the eyeball is generally ellipsoidal, so that the peripheral Petzval surface is positioned behind the retina to form hyperopic defocus. Hyperopic defocus promotes the growth of the axis of the eye and thus promotes the progression of myopia.

There have been a variety of ophthalmic lenses for myopia prevention and control, one of which involves arranging a plurality of microlenses on a single-photosphere, and inhibiting the progression of myopia by forming an image of an object in front of the retina using these microlenses, see CN 104678572A.

However, there is still a need for myopia prevention and control lenses that effectively inhibit the increase in axial length of the eye without significantly affecting visual quality, while improving patient compliance and reducing variability between individuals.

Disclosure of Invention

To at least partially solve the problems of the prior art, according to one aspect of the present application, there is provided an ophthalmic lens comprising a plurality of first refractive zones and a plurality of second refractive zones, the plurality of first refractive zones being closer to a center of the ophthalmic lens than the plurality of second refractive zones, and the plurality of first refractive zones being configured such that when the ophthalmic lens is worn by a wearer, an incident light beam passing through the plurality of first refractive zones is projected on a region between 10 and 20 degrees beside a fovea of a macula of a retina of the wearer, a pitch between the plurality of second refractive zones is greater than a pitch between the plurality of first refractive zones, a region of the ophthalmic lens other than the plurality of first refractive zones and the plurality of second refractive zones has a corrective refractive power based on a refractive error of a corrective eye, and each of the plurality of first refractive zones and the plurality of second refractive zones has a refractive power different from the corrective power.

Illustratively, the plurality of first dioptric zones are arranged within an annular zone of an inner ring diameter 9mm to an outer ring diameter 15mm centred on the ophthalmic lens centre, preferably within an annular zone of an inner ring diameter 11mm to an outer ring diameter 14mm centred on the ophthalmic lens centre.

Illustratively, the plurality of first dioptric regions are provided non-spaced apart.

Illustratively, the plurality of second dioptric regions are arranged at intervals.

Illustratively, any adjacent two of the first dioptric regions of the plurality of first dioptric regions are contiguous with each other.

Illustratively, the plurality of first refractive zones are arranged on one or more first patterns (patterns) and the plurality of second refractive zones are arranged on one or more second patterns, the second patterns and the first patterns being concentrically arranged with the ophthalmic lens.

Illustratively, the pitch between the first pattern and the second pattern is equal to the pitch between any two adjacent second patterns, and preferably, the pitch between the first pattern and the second pattern and the pitch between any two adjacent second patterns are both zero.

Illustratively, the number of first patterns is 1-4 and the number of second patterns is 1-15.

Illustratively, the number of the first patterns is plural, and a pitch between adjacent first patterns is less than or equal to 0.5mm.

Illustratively, the second pattern and the first pattern are both annular.

Illustratively, for a pattern further from the center of the ophthalmic lens, the spacing between two adjacent refractive zones within the pattern is greater.

Illustratively, the ophthalmic lens comprises a central zone, the central zone being a zone surrounded by a plurality of first refractive zones, the plurality of first refractive zones and the plurality of second refractive zones being located within an annular zone surrounding the central zone.

Illustratively, the diameter of the central region is between 3-11 mm.

Illustratively, the plurality of first refractive zones and the plurality of second refractive zones are evenly distributed within the annular region; or the plurality of first dioptric regions and the plurality of second dioptric regions are non-uniformly distributed within the annular region such that the annular region has a blank region where the first dioptric region and/or the second dioptric region is not located.

Illustratively, the plurality of second dioptric zones are arranged on a plurality of second patterns concentrically arranged with the ophthalmic lens, the second dioptric zones on second patterns of the plurality of second patterns closer to the center of the ophthalmic lens having smaller pitches.

Illustratively, the plurality of first refractive zones and the plurality of second refractive zones are distributed over a plurality of rays starting from the center of the ophthalmic lens, each ray having distributed thereon a first refractive zone and a second refractive zone.

Illustratively, the plurality of rays are uniformly distributed on the ophthalmic lens.

Illustratively, the number of the plurality of rays is 26-35.

Illustratively, the number of first refractive zones is less than the number of second refractive zones per ray.

Illustratively, when the number of the plurality of rays is 2n, the plurality of rays form n straight lines.

Illustratively, a single first refractive region of the first plurality of refractive regions and a single second refractive region of the second plurality of refractive regions have a surface shape selected from spherical, aspherical, or toric.

Illustratively, the plurality of first refractive zones add a positive refractive power to the corrective refractive power;

illustratively, the second refractive region adds a positive power to the corrective power.

Illustratively, the refractive power of the plurality of first dioptric regions is equal to the refractive power of the plurality of second dioptric regions; or the plurality of first dioptric regions and the plurality of second dioptric regions have, as a whole, a gradually or stepwise increasing power, in a direction away from the centre of the ophthalmic lens; or the plurality of first refractive zones and the plurality of second refractive zones have a gradually decreasing or stepwise decreasing refractive power as a whole in a direction away from the center of the ophthalmic lens.

Illustratively, the projections of the plurality of second refractive zones onto the ophthalmic lens have equal areas.

According to another aspect of the present invention, there is also provided an ophthalmic lens on which a plurality of microlenses are provided, a pitch between microlenses that are close to a center of the ophthalmic lens among the plurality of microlenses being smaller than a pitch between microlenses that are far from the center of the ophthalmic lens, and the microlenses that are close to the center of the ophthalmic lens being configured such that, when a wearer wears the ophthalmic lens, an incident light beam that passes through the microlenses that are close to the center of the ophthalmic lens is projected on an area between 10 degrees and 20 degrees beside a macular fovea of the wearer, an area on the ophthalmic lens other than the plurality of microlenses having a correction refractive power based on a refractive error of a corrected eye, and the plurality of microlenses each having a refractive power different from the correction refractive power.

Illustratively, the microlenses near the center of the ophthalmic lens are disposed within an annular region of 9mm inner ring diameter to 15mm outer ring diameter centered on the center of the ophthalmic lens, preferably 11mm inner ring diameter to 14mm outer ring diameter centered on the center of the ophthalmic lens.

Illustratively, the microlenses near the center of the ophthalmic lens are arranged in one or more first patterns, and the microlenses away from the center of the ophthalmic lens are arranged in one or more second patterns, the second and first patterns being concentrically disposed with the ophthalmic lens.

Illustratively, the pitch between the microlenses arranged within a single first pattern is selected from 0.0 to 0.5mm.

Illustratively, the second pattern and the first pattern are both annular.

Illustratively, an ophthalmic lens includes a central zone, which is a zone surrounded by a plurality of microlenses located within an annular zone surrounding the central zone.

Illustratively, the diameter of the central region is between 3-11 mm.

Illustratively, the plurality of microlenses are distributed over a plurality of rays originating from the center of the ophthalmic lens.

Illustratively, the number of the plurality of rays is 26-35.

Illustratively, the plurality of microlenses add a positive optical power to the corrective optical power, wherein the added optical power of each of the plurality of microlenses is the same; or in a direction away from the center of the ophthalmic lens, the plurality of microlenses have a gradually increasing or stepwise increasing optical power; or in a direction away from the center of the ophthalmic lens, the plurality of microlenses have a gradually or stepwise decreasing optical power.

According to a further aspect of the present invention, there is also provided a pair of frame spectacles provided with an ophthalmic lens according to any one of the above.

A series of concepts in a simplified form are incorporated in the disclosure, as will be described in further detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

Advantages and features of the present application are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present application are included to provide an understanding of the present application. The drawings illustrate embodiments of the application and, together with the description, serve to explain the principles of the application. In the drawings, there is shown in the drawings,

figure 1 is a front view of an ophthalmic lens according to an exemplary embodiment of the present application;

fig. 2 is a front view of an ophthalmic lens according to another exemplary embodiment of the present application;

FIG. 3 is an enlarged view of a portion of FIG. 2;

figure 4 is a front view of an ophthalmic lens according to yet another exemplary embodiment of the present application;

fig. 5 is a front view of an ophthalmic lens according to yet another exemplary embodiment of the present application;

FIG. 6 is an enlarged view of a portion of FIG. 5;

FIG. 7 is a data chart comparing an ophthalmic lens according to an exemplary embodiment of the present application with a control example; and

fig. 8A-8E are simplified schematic views of an ophthalmic lens according to different embodiments of the present application, respectively, showing different distributions of the dioptric zones, respectively, wherein the outer contours of all the microlenses are not drawn in order to clearly show the arrangement of the microlenses.

Wherein the figures include the following reference numerals:

1. an ophthalmic lens; 2. a first refractive zone; 2a, a first pattern on the inner side; 2b, an outer first pattern; 3. a second refractive region; 4. a ray; 41. an additional pattern; 42. a curve; 43. compounding the wires; 5. a central region; 6. a peripheral region; 7. a middle region; 21. a first ring; 31. a second ring.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present application. One skilled in the art, however, will understand that the following description merely illustrates preferred embodiments of the application and that the application may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid confusion with the present application.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present application. It is apparent that the implementation of the embodiments of the present application is not limited to the specific details familiar to those skilled in the art. The following detailed description of the preferred embodiments of the present application, however, the present application may have other embodiments in addition to these detailed descriptions.

In order to prevent and control myopia as much as possible and also to satisfy the visibility of the lens, one aspect of the present application provides an ophthalmic lens.

The ophthalmic lens of the present application will be described in detail below with reference to fig. 1.

As shown in fig. 1, the ophthalmic lens 1 has a correction refractive power based on correcting ametropia of the eye. The ophthalmic lens 1 is provided with a plurality of first dioptric zones 2 close to the center of the ophthalmic lens 1, the plurality of first dioptric zones 2 may be arranged in one or more first patterns, for example 2, 3, but not more than 4 first patterns. The one or more first patterns may be arranged concentrically with the ophthalmic lens 1. The first pattern may be annular, ring-like, or any shape that is centrosymmetric along the center of the lens. The plurality of first patterns may be the same as or different from each other. By ring-like shape is meant that the majority of the first dioptric regions 2 are arranged on one or more circles and the remaining first dioptric regions 2 are outside the circle, illustratively at regular (e.g. equally spaced) positions inside the circle and immediately adjacent to the circle, and/or at regular (e.g. equally spaced) positions outside the circle and immediately adjacent to the circle, e.g. a plurality of first dioptric regions 2 may be arranged in a shape resembling the outer contour of a sunflower. The ophthalmic lens 1 is further provided with a plurality of second dioptric zones 3 remote from the centre of the ophthalmic lens 1, formed as a plurality of island-shaped zones spaced apart from each other, arranged on one or more second patterns. One or more second patterns may be provided concentrically with the ophthalmic lens 1, there is no specific limitation on the maximum size of the second pattern, and a person skilled in the art may select a suitable range as desired. Similar to the first pattern, the second pattern may be annular, ring-like, or any shape that is centrosymmetric along the center of the lens. The plurality of second patterns may be the same as or different from each other. The first and second

refractive zones

2, 3 each have a refractive power different from the corrective refractive power. The first dioptric region 2 and the second dioptric region 3 are both capable of focusing light at a position other than the retina of the eye, thereby suppressing the progression of refractive error of the eye. The central zone 5, the peripheral zone 6 outside the first and second

dioptric zones

2, 3 and the intermediate zone 7 between the first and second

dioptric zones

2, 3 on the ophthalmic lens 1 can have corrective powers. The central zone 5 of the ophthalmic lens 1 is designed to be the position where the pupil is facing directly when the user is looking straight ahead after wearing the lens. Thus, after correction in the central region 5, the image is just on the fovea of the macula to ensure clear vision. The corrective power is the power prescribed by the optometry mechanism and is understood to be the power conventionally prescribed. The first dioptric region 2 is a region having a refractive power other than the corrective refractive power. Illustratively, a plurality of first dioptric zones 2 may meet each other along a first pattern on the ophthalmic lens 1. The projection of each first refractive area 2 on the lens may be in the shape of a perfect circle, an oblate circle, a polygon, or the like. For polygons, the number of edges may be greater than or equal to 6. When the first refractive region 2 is circular, any adjacent two of the plurality of first refractive regions 2 can be tangent to each other along the first pattern. The plurality of first refractive zones 2 are used to form a dense addition (i.e., adding positive power to the corrective power) at the periphery of the central zone 5. The present application achieves a better myopia control effect by providing a high density myopic defocus region near the central optical zone, and the inventors have found that myopic defocus formed by densely intensifying light in an annular region formed by an inner ring diameter of 9mm to an outer ring diameter of 15mm centered on the center of the ophthalmic lens can give more stimulus to the retina, thereby suppressing elongation of the axis of the eye, and an incident light beam passing through the annular region is projected approximately at a region between 10 degrees and 20 degrees beside the fovea at the center of the macula lutea. In line with this, there are studies that show that competitive myopic defocus signals applied near the fovea of the macula have a stronger and more consistent effect on slowing down axial growth of the axis of the eye (E.L. Smith III et al, eccenter-dependent effects of multiple recording on methylation in amino acids monkey, vision Research,17 (3): 32-40,2020).

Preferably, the intensive addition may be performed in an annular region formed by an inner ring diameter of 11mm to an outer ring diameter of 14mm with the center of the ophthalmic lens as a center, and an incident beam passing through the annular region is projected approximately at a region 15 degrees near the fovea at the center of the macula lutea, because the intensive addition needs to be performed in an annular region having a certain width in order to ensure coverage of a defocus sensitive region of the retina in consideration of the fact that the lens moves up and down during wearing. FIG. 7 is a graph of field curvature integrals (negative field curvature absolute values) calculated by optical simulation software Optic Studio Zemax for lenses with different microlens arrays placed on the Liou & Brenna surface of model eyes. As shown in FIG. 7, the lens of the present invention can provide more stimulus out of focus to the retina by placing closely packed lenticules, see the preferred embodiment (where the closely packed lenticules are located substantially in an annular area with an inner diameter of 9.5mm and an outer diameter of 14 mm) in the portion corresponding to the defocus sensitive area of the retina. In a small scale experiment, the ophthalmic lenses of the present application were found to be effective in promoting choroidal thickening (6 ± 6% mean choroidal thickening at 2 weeks), with short term choroidal thickening now being considered to be associated with long term ocular axis growth control effects. Of course, within each first pattern, the first refractive zones 2 may also have a smaller pitch (e.g. a pitch of less than 0.5mm, e.g. 0.4, 0.3, 0.2, 0.1 mm) between them. In any case, however, the spacing between the first dioptric regions 2 may be smaller than the spacing between the second dioptric regions 3. It is also contemplated that the density of the first refractive region 2 may be greater than the density of the second refractive region 3. The density of the dioptric regions refers to the number of dioptric regions per unit area. In general, the size of each dioptric region is small and the size of the different dioptric regions is not very different, so the density can be used to describe the density of the first dioptric region 2 and the second dioptric region 3. Of course, the distance can also be used to measure the density of the first dioptric region 2 and the second dioptric region 3.

The second refractive zone 3 also has a refractive power different from the corrective refractive power. The plurality of second refractive regions 3 may be spaced apart from one another forming an island region. The inventors have found that leaving the appropriate spacing between the second refractive zones 3 not only improves compliance by myopes, but also minimises the differential avoidance between the effects of myopia prevention and control in different patients. Without wishing to be bound by any theory, it is important to maintain sufficient separation between the second plurality of refractive zones 3, since the inventors believe that if the myopic defocus range is too large, insufficient focusing light on the retina can cause the eye to have difficulty judging whether the accommodative retina is looking forward or backward to focus, thereby causing a large difference in effect between different patients.

The design uses the principle of inverse power, and the optical power (for example, -0.75D) in a specific micro area at the periphery of the central area 5 is less than the optical power (for example, -3.5D) of the central area 5, so that myopia defocusing which can be perceived by the retina and can not be perceived by the brain is formed on the peripheral retina, and the axial growth of the eye is controlled without influencing or not influencing the visual effect, thereby playing the role of preventing or delaying the myopia from deepening.

The first dioptric regions 2 may be arranged on one or more first patterns, wherein fig. 1 shows the case where the first dioptric regions 2 are arranged on one first pattern; fig. 2 shows a case where the first dioptric region 2 is arranged on a plurality of first patterns. Referring to a part of fig. 2 shown in fig. 3, the first dioptric region 2 may be arranged on a first pattern 2a close to the central region 5 (hereinafter, referred to as an inner first pattern 2a for convenience of description) and on a first pattern 2b distant from the central region 5 and adjacent to the first pattern 2a (hereinafter, referred to as an outer first pattern 2a for convenience of description). The first dioptric regions in the inner first pattern 2a may be contiguous or immediately adjacent to each other. By immediately adjacent is meant that the first dioptric regions have a smaller pitch between them, for example a smaller pitch than the second dioptric region 3. The first dioptric regions in the outer first pattern 2b may be contiguous or immediately adjacent to each other. The inner first pattern 2a and the outer first pattern 2b may be contiguous or closely adjacent to each other. In order to increase the intensive addition of the first dioptric zones 2, the first dioptric zones in the inner first pattern 2a and the first dioptric zones in the outer first pattern 2b can be made to meet, both within and between the patterns. In this case, the diameter of the first dioptric region in the inner first pattern 2a may be set to be slightly smaller than the diameter of the first dioptric region in the outer first pattern 2b, so that the number of first dioptric regions in the inner first pattern 2a and the number of first dioptric regions in the outer first pattern 2b may be equivalent. Of course, the first refraction zone in the inner first pattern 2a and the first refraction zone in the outer first pattern 2b may also be provided with diameters that are equally large, in which case the number of first refraction zones in the inner first pattern 2a may be less than the number of first refraction zones in the outer first pattern 2 b. Although fig. 2-3 describe an embodiment in which the first refractive zones 2 are arranged in 2 first patterns, it is understood that the first refractive zones 2 may be arranged in more first patterns.

Although in the illustrated embodiment the first dioptric regions 2 are illustrated as being uniformly arranged along the extension of the first pattern, in an embodiment not shown the first dioptric regions 2 may also be non-uniformly arranged along the extension of the first pattern. The extending direction of the first pattern refers to the extending direction of lines generally formed by the first pattern. In fig. 1 to 2, the first patterns are each formed as a circular ring (21), and the extending direction of the first patterns may be understood as the extending direction of the lines forming the circular ring, that is, the circumferential direction. In other embodiments, for a first pattern, in addition to the first dioptric regions being uniformly arranged, it may also include some first dioptric regions being non-uniformly arranged. The first dioptric zones arranged non-uniformly are distributed discretely along the extension of the first pattern, with a larger pitch between them, but they are contiguous or immediately adjacent to those first dioptric zones 2 which are contiguous or closely arranged along the extension of the first pattern. Alternatively, adjacent first patterns may not be contiguous (i.e., not like in fig. 2) or immediately adjacent, but may have a slightly larger pitch. The pitch between adjacent patterns (simply referred to as pattern pitch) refers to the distance between the dioptric region in one pattern and the dioptric region in the other adjacent pattern along the radial direction of the lens. When the dioptric regions on different patterns are all radially distributed along the radial direction, the pattern pitch may be determined by two dioptric regions adjacent along the radial direction. When the dioptric regions on different patterns are not radially distributed along the radial direction, the pattern pitch may be half the difference between the dimension of the innermost contour of the outer pattern in a predetermined radial direction and the dimension of the outermost contour of the inner pattern in the predetermined radial direction.

The second refractive regions 3 may be arranged in one or more second patterns, as in the embodiments shown in figures 1 to 3, the second refractive regions 3 are arranged in a plurality of second patterns. In this case, the spacing between the second dioptric regions 3 on the second pattern further outward may be larger. Of course, it is also possible to arrange the second dioptric zones 3 on each second pattern to be equally spaced, for example the spacing between the second dioptric zones 3 within different second patterns may be equal, which would represent a greater number, or a greater size, of second dioptric zones 3 on second patterns closer to the outside. Further, the pitches between the adjacent second patterns may be equal. Of course, the pattern pitch of the second pattern closer to the outer side may be set larger.

Illustratively, all patterns, including the first pattern and the second pattern, are seen in their entirety, with the spacing between two adjacent refractive zones within the pattern being greater for patterns further from the center of the ophthalmic lens, see fig. 1, 4 and 5. That is, the pitch between the dioptric zones in any two adjacent patterns, relatively close to the center of the ophthalmic lens, is smaller than the pitch between the dioptric zones in the pattern further from the center of the ophthalmic lens. Of course, the above rule may also exist only for the second pattern. In particular, when there are a plurality of first patterns, in order to ensure dense addition at portions corresponding to defocus sensitive areas of the retina, the first dioptric regions within each first pattern may be contiguous or closely adjacent to each other, see fig. 2. In this case, the spacing between the second dioptric regions within the second pattern further from the center of the ophthalmic lens may be larger. In one exemplary embodiment, the spacing between two adjacent refractive regions within a single pattern increases gradually from zero, but not more than 2.00mm, preferably not more than 1.90mm, more preferably not more than 1.80mm, for example gradually increasing to 1.20mm, from the innermost one of the patterns to the outermost one of the patterns.

Although in the illustrated embodiment the second dioptric regions 3 are illustrated as being arranged uniformly along the extension of the second pattern, in an embodiment not shown the second dioptric regions 3 may also be arranged non-uniformly along the extension of the second pattern. The extending direction of the second pattern refers to the extending direction of lines generally formed by the second pattern. In fig. 1 to 2, the second patterns are each formed as a circular ring (31), and the extending direction of the second patterns may be understood as the extending direction of the lines forming the circular ring, that is, the circumferential direction. In other embodiments, for a second pattern, it may include some second dioptric regions that are not uniformly arranged, in addition to those that are uniformly arranged. The second dioptric zones, which are arranged non-uniformly, are distributed discretely along the extension of the second pattern, with a larger pitch between them, but they are contiguous or in close proximity to those second dioptric zones 3 which are contiguous or closely arranged along the extension of the second pattern. Alternatively, adjacent second patterns may not be contiguous (i.e., not like in fig. 2) or closely adjacent, but may have a slightly larger pitch.

In one embodiment, each of the first patterns may have a ring shape. Referring back to fig. 1, the first refractive zone 2 may be arranged on the first ring 21. Of course, in other embodiments not shown, each first pattern may also be polygonal or have other shapes with central symmetry, etc. The number of the first rings 21 may be one or more. When the number of the first rings 21 is plural, two adjacent first rings 21 may be in contact with each other or may be closely adjacent to each other or may have a slightly larger distance therebetween. A plurality of second refractive zones 3 may be arranged on one or more second rings 31. The second ring 31 is arranged concentrically with the first ring 21. A space may be provided between the plurality of second rings 31. In the case where the first ring 21 and the second ring 31 are collectively referred to as a ring, the intervals between the adjacent rings may be equal. Of course, the pitch between adjacent rings may be gradually increased in the direction away from the central region 5, that is, the pattern pitch may be gradually increased. Or the first rings 21 may have an equal first spacing therebetween and the second rings 31 may have an equal or unequal second spacing therebetween. The first pitch is less than the second pitch.

In another embodiment, the first pattern (if any), the second pattern, and both the first pattern and the second pattern may be contiguous or immediately adjacent. As shown in fig. 5 to 6, the first ring 21 and the second ring 31 may be connected or closely adjacent to each other, and adjacent second rings 31 may also be connected or closely adjacent to each other. In fact, in this case it is not possible to distinguish so clearly which are the first rings and which are the second rings. But in general it is still clearly seen that the spacing between the outer dioptric regions is significantly greater than the spacing between the inner dioptric regions. Within the scope of the present application, for clarity reasons, a pattern in which the spacing between at least two adjacent dioptric regions within the same pattern is less than 0.5mm is referred to as "first pattern". In one embodiment, since there is little or no small (less than 0.5 mm) space between the dioptric regions on the innermost one of the patterns and on the one of the patterns adjacent thereto, the number of the first rings 21 can be considered to be 2 and the number of the second rings 31 to be 6. The spacing between the second rings 31 is zero and the spacing between the first ring 21 and the second rings 31 is also zero. The closer to the outside, the greater the spacing of the second dioptric regions 3 within each second ring 31.

Of course, the first dioptric zone 2 and the second dioptric zone 3 may also not be distributed on the ring, for example only on one side of the central zone 5, such as the upper, lower, left or right side in the figure, or else as partial zones around the periphery of the central zone 5. They may be arranged symmetrically or asymmetrically with respect to the central region 5. How to distribute can be adjusted according to the vision condition of the wearer. As shown in fig. 4, the first or second dioptric region may not be provided within the B region in the figure. This zone B is intended to allow the wearer to switch between far vision (e.g. looking at the blackboard) and near vision (e.g. looking at a desk book) without moving his head substantially, and may therefore optionally have a refractive power different from the corrective refractive power for near vision tasks.

According to some exemplary embodiments of the present application, the first dioptric area 2 has a refractive power obtained by adding a positive refractive power to the corrective refractive power, that is, the overall refractive power of the lens to which the first dioptric area 2 corresponds is smaller than the corrective refractive power. The overall refractive power of the lens corresponding to the first dioptric area 2 is smaller than the refractive powers (i.e., corrective powers) of the other areas except for the first dioptric area 2 and the second dioptric area 3. In this case, the first dioptric region 2 corresponds to a convex lens added to the original lens.

Here, it should be noted that each of the first dioptric regions 2 may have a uniform refractive power or may have a different refractive power. In a preferred embodiment, each first refractive zone 2 has a uniform power. The positive power added by the first or second refractive zone relative to the central zone 5 is referred to simply as addition in this application. Within the scope of the present application, the addition value of the first dioptric region 2 relative to the central region 5 is in the range of +1.0D to +10.0D, for example +1.5D, +2.5D, +3.0D, +3.5D, +4.0D, +4.5D, +5.0D, +5.5D, +6.0D, +7.0D, +8.0D, or +9.0D. Illustratively, the addition power of the first dioptric region 2 may be constant or gradually increasing or stepwise increasing in a direction away from the central region 5. By stepwise increase is meant that the first dioptric zone 2 of adjacent several patterns has a first addition value, whereas the first dioptric zone 2 of several patterns outside the several patterns may have a second addition value. The second addition degree may be greater than the first addition degree.

According to some exemplary embodiments of the present application, for each first dioptric area 2 it may be a micro-lens attached to the original lens. For example, it may be a convex lens. Alternatively, the first refractive zone 2 may have a contour that is identical to the original lens, i.e. does not protrude from the original lens. In this case, the first dioptric region 2 may have a different refractive index than the original lens. For example, the first dioptric region 2 may be made of different materials from the original lens, or the refractive indices of different regions of the lens material may be adjusted by adjusting the ion concentration therein for polymerization, or the refractive index may be changed by irradiating a specific region with ultraviolet rays for repolymerization.

The maximum dimension of the projection of each first refractive region 2 on the lens may be between 0.8-2.2mm, such as 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, or 2.1mm, or any value in between. When the projection of the first refractive area 2 on the lens is circular, the diameter of the circle may be between 0.8-2.2 mm.

Illustratively, the central region 5 may be circular, polygonal, or other centrosymmetric figure. The maximum dimension of the central region 5 may be 3-11mm, for example, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, or 11mm, or any value in between. When the central region 5 is circular, the diameter of the central region 5 may be between 3-11 mm.

Briefly described, one embodiment: it can be assumed that the corrective power is-3.5D, the central zone 5 of the lens has a diameter of 10mm and the first refractive zone 2 is located at a distance of around 5mm from the center. Exemplarily, the first dioptric zone 2 can be located next to the border of the central zone 5 with a diameter of 10mm, and the number of the first dioptric zone 2 can then be pi x d1/d2, where d1 is the diameter of the central zone 5 and d2 is the maximum size of the first dioptric zone 2. When d2 is 1.2mm, the number of the first dioptric regions 2 can be calculated to be 26. Of course, the number of the first dioptric zones 2 can be 26-35, and correspondingly, the maximum size of the first dioptric zones 2 and the diameter of the central zone 5 can be matched. By densely arranging the first dioptric regions 2 around the central region 5, the lengthening of the ocular axis can be effectively delayed, and the effect of inhibiting myopia is better.

According to some exemplary embodiments of the present application, the second dioptric region 3 has a refractive power obtained by adding a positive refractive power to the corrective refractive power, that is, the overall refractive power of the lens to which the second dioptric region 3 corresponds is smaller than the corrective refractive power. The overall refractive power of the lens corresponding to the second dioptric area 3 is smaller than the correction refractive power. The second dioptric zone 3 may correspond to a convex lens added to the original lens.

Here, it should be noted that each of the second dioptric regions 3 may have a uniform refractive power or may have a different refractive power. In a preferred embodiment, each second refractive zone 3 has a uniform power. Within the scope of the present application, the addition value of the second dioptric region 3 relative to the central region 5 is in the range from +1.0D to +10.0D, for example +1.5D, +2.5D, +3.0D, +3.5D, +4.0D, +4.5D, +5.0D, +5.5D, +6.0D, +7.0D, +8.0D, or +9.0D. Illustratively, the addition of the second dioptric region 3 may be constant or gradually increasing or stepwise increasing or gradually decreasing or stepwise decreasing in a direction away from the central region 5. Illustratively, the second dioptric region 3 and the first dioptric region 2 may have equal addition values. Illustratively, the first dioptric region 2 and the second dioptric region 3 may have, as a whole, an addition value that increases gradually or stepwise or decreases gradually or stepwise in a direction away from the central region 5.

According to some exemplary embodiments of the present application, for each second dioptric zone 3 it may be a micro-lens attached to the original lens. For example, it may be a convex lens. Alternatively, the second refractive zone 3 may have a contour that is congruent with, i.e. does not project beyond, the original lens. In this case, the second dioptric region 3 may have a different refractive index than the original lens. For example, the second dioptric region 3 can be made of a different material from the original lens, or the refractive index of a different region of the lens material can be adjusted by adjusting the ion concentration therein for polymerization, or the refractive index can be changed by irradiating a specific region with ultraviolet rays for repolymerization.

The maximum dimension of the projection of each second refractive region 3 on the lens may be between 0.8-2.2mm, for example 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, or 2.1mm, or any value in between. When the projection of the second refractive area 3 on the lens is circular, the diameter of the circle may be between 0.8-2.2 mm.

As previously described, the first dioptric region 2 may be arranged on one first ring 21 and the second dioptric region 3 may be arranged on a plurality of second rings 31. The second ring 31 is arranged concentrically with the first ring 21. The spacing between them may be equal. To illustrate with one embodiment, assuming one first ring 21 and five second rings 31, the largest second ring 31 may have a diameter of 30mm (radius 15 mm), the central zone 5 a diameter of 10mm (radius 5 mm), and the first dioptric zone 2 and the second dioptric zone 3 each have a diameter of 1.2mm, the spacing between adjacent rings may be (15-5-0.6)/5-1.2 ≈ 0.7mm, i.e. the spacing between adjacent rings (i.e. the spacing between two dioptric zones on adjacent rings in the radial direction) is approximately 0.7mm. In some embodiments, the spacing between adjacent rings or adjacent patterns may also be unequal, e.g., the spacing between adjacent patterns may be equal to 0.2 to 1.5 times the diameter of the first refractive region 2 or the second refractive region 3, e.g., 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, or 1.5 times. In still other embodiments, the spacing between at least two adjacent rings or adjacent patterns is equal to 0.

In the case where the first plurality of dioptric zones and the second plurality of dioptric zones are each microlenses, the first plurality of dioptric zones can be considered microlenses near the center of the ophthalmic lens and the second plurality of dioptric zones can be considered microlenses away from the center of the ophthalmic lens. The close and far references herein are not absolute, but relative. The lenticules closer to the center of the ophthalmic lens are a portion of all the lenticules, while the lenticules further from the center of the ophthalmic lens are another portion of all the lenticules, the former portion being closer to the center of the ophthalmic lens than the latter portion, and the latter portion being further from the center of the ophthalmic lens than the former portion.

According to some exemplary embodiments of the present application, the number of first dioptric regions 2 on each first ring 21 and the number of second dioptric regions 3 on each second ring 3 may be the same. Preferably, the first dioptric zone 2 and the second dioptric zone 3 total 170-400; preferably 190-300.

Illustratively, the plurality of first dioptric zones 2 and the plurality of second dioptric zones 3 are distributed over a plurality of rays 4 starting from the center of the ophthalmic lens. The arrangement of the rays is that after a user wears the spectacle lens, the spectacle lens has ray-shaped clear areas of the visual objects in the up, down, left and right directions, so that the requirement of the user on the definition of the visual objects in the up, down, left and right directions is met, and particularly, the pattern space is small. A first refractive area 2 and a second refractive area 3 are distributed over each ray 4. On each ray 4, the number of first dioptric zones is smaller than the number of second dioptric zones. Exemplarily, when the number of rays 4 is 2n, these rays 4 form n straight lines. Of course, in other embodiments not shown, the first plurality of dioptric regions 2 and the second plurality of dioptric regions 3 may also not be distributed over the rays, for example, the dioptric regions on some rings may be offset with respect to the dioptric regions on the adjacent rings. When the first and second plurality of

dioptric zones

2, 3 are distributed along the ray 4, the number of dioptric zones on each ring is equal, in which case a radially continuous blank zone, i.e. a radially continuous distance dioptric correction zone, will be formed outside the central optical zone, helping to provide good visual quality. Alternatively, the number of dioptric regions on the rings closer to the central region 5 may be smaller, and correspondingly, the number of dioptric regions on the rings further from the central region 5 may be larger. Alternatively, the first dioptric region 2 and the second dioptric region 3 may have, on the whole, a gradually or stepwise increasing size and a gradually or stepwise decreasing addition value per ray in a direction away from the central region 5. The arrangement mode can maintain basically constant low-intensity image jump in the whole lens range under the condition that other parameters are not changed through optical optimization, and can provide good visual effect for a subject by combining a ray-shaped and continuous far-use refractive correction area, so that the subject is easy to adapt and high in wearing compliance.

Illustratively, additional second dioptric regions may also be distributed between two adjacent rays 4, and these additional second dioptric regions may also be arranged in a regular pattern. For clarity of description, the pattern in which the additional second dioptric regions are arranged is referred to herein as an additional pattern 41, as shown in fig. 8A. Optionally, an additional pattern 41 may be provided between each adjacent two rays 4. Alternatively, an additional pattern 41 may be provided between a portion of two adjacent rays 4, while no pattern is provided between another portion of two adjacent rays 4 (i.e., a margin is formed). In this case, the additional patterns 41 and the whites may be alternately arranged as shown in fig. 8B. All the additional patterns 41 may be divergently distributed with respect to the central area 5 as a whole. Each additional pattern 41 may be linear as shown in the figure, or may be curved in any manner.

Illustratively, instead of a plurality of rays 4, a plurality of first dioptric regions and a plurality of second dioptric regions may be distributed over a plurality of curves 42, as shown in figures 8C-8D. These curves 42 may be distributed divergently with respect to the central area 5. That is, two intersection points m on the adjacent curves 42 with an intersecting circle (see the dotted line in the figure) centered on the center of the ophthalmic lens ₁ And m ₂ The distance therebetween gradually increases as the diameter of the intersecting circle increases. Illustratively, for the same intersecting circle, it may intersect all the curves 42, and the distance between the intersection points of any two adjacent curves 42 and the intersecting circle may be equal. Illustratively, the plurality of curves 42 may curve in the same direction, such as in a counterclockwise direction (as shown in fig. 8C), or in other embodiments not shown in a clockwise direction. Of course, each curve 42 may have multiple directions of curvature, as shown in FIG. 8D, which illustrates each curve 42 generally having a wave shape with two curves. In other embodiments not shown, each curve 42 may also appear to have moreCurved wave-like. In addition, the bends may be uniformly distributed on each curve 42, or may be non-uniformly distributed on each curve 42. For example, portions closer to the central region 5 may distribute less curvature, while portions further from the central region 5 may distribute more curvature.

Both the ray 41 and the curve 42 are formed by a single line. Alternatively, instead of the ray 41 being also the curve 42, the plurality of first refractive regions and the plurality of second refractive regions may be distributed over a plurality of compound lines 43, as shown in fig. 8E. The plurality of composite wires 43 may be divergently distributed with respect to the central region 5. The composite line 43 may be formed by a plurality of straight lines, or by a plurality of curved lines, or by a combination of straight lines and curved lines. In the illustrated embodiment, the composite thread 43 may comprise a main thread extending in a radial direction of the ophthalmic lens and two branch threads extending outwardly from the end of the main thread distal from the center of the ophthalmic lens. The plurality of composite wires 43 may also be repeatedly arranged along the circumferential direction of the ophthalmic lens. That is, the intersection m formed by the intersection circle (see the dotted line in the figure) centered on the center of the ophthalmic lens and the corresponding portion on the plurality of complex lines 43 ₁ 、m ₂ …m _n The distances between are equal.

The ophthalmic lenses of the present application were found to score higher after extended wear in a questionnaire survey for patient comfort (table 1), the questionnaire content comprising: comfort level during wearing, double vision, fatigue, dizziness, headache or incapability of adapting, difficulty level during wearing new lenses, difficulty during walking, ability of going upstairs and downstairs during wearing glasses, and the like. The comparative ophthalmic lens 1 does not have a radially continuous distance refractive correction zone.

Table 1:

exemplarily, the first refractive region 2 may have a surface shape selected from a spherical surface, an aspherical surface, or a toric surface. The plurality of first refractive regions 2 may have a uniform shape or may have different shapes. The second refractive region 3 may also have a surface shape selected from spherical, aspherical or toric. The plurality of second refractive zones 3 may have a uniform shape or may have different shapes.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present application has been described in terms of the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the application to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present application, all falling within the scope of the present application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. An ophthalmic lens comprising a plurality of first refractive zones and a plurality of second refractive zones,

the first plurality of refractive zones are closer to a center of the ophthalmic lens than the second plurality of refractive zones and are configured such that when the ophthalmic lens is worn by a wearer, an incident beam of light passing through the first plurality of refractive zones is projected onto a region of between 10 and 20 degrees beside a fovea of a macula of the wearer,

the spacing between the second plurality of refractive zones is greater than the spacing between the first plurality of refractive zones,

the ophthalmic lens has a corrective refractive power based on ametropia of the corrected eye in areas other than the first and second plurality of refractive zones, and the first and second plurality of refractive zones each have a refractive power different from the corrective refractive power.

2. The ophthalmic lens of claim 1,

the plurality of first dioptric zones are arranged within an annular zone of 9mm to 15mm inner ring diameter centred on the ophthalmic lens centre, preferably 11mm to 14mm outer ring diameter centred on the ophthalmic lens centre.

3. The ophthalmic lens of claim 1,

the first dioptric regions are arranged in a non-spaced mode, and any two adjacent first dioptric regions in the first dioptric regions are preferably connected with each other; and/or

The plurality of second dioptric regions are disposed at intervals.

4. The ophthalmic lens of claim 1, wherein the plurality of first dioptric zones are arranged on one or more first patterns and the plurality of second dioptric zones are arranged on one or more second patterns, the second and first patterns being concentrically arranged with the ophthalmic lens.

5. An ophthalmic lens according to claim 4, characterized in that the pitch between the first pattern and the second pattern is equal to the pitch between any two adjacent second patterns, preferably the pitch between the first pattern and the second pattern and the pitch between any two adjacent second patterns are both zero.

6. An ophthalmic lens according to claim 4, characterized in that the number of the first patterns is 1-4 and the number of the second patterns is 1-15.

7. An ophthalmic lens according to claim 4, characterized in that the number of first patterns is multiple and the pitch between adjacent first patterns is less than or equal to 0.5mm.

8. The ophthalmic lens according to claim 4,

the second pattern and the first pattern are both annular; and/or

For a pattern further from the center of the ophthalmic lens, the spacing between two adjacent refractive zones within the pattern is greater.

9. An ophthalmic lens according to claim 1, characterized in that the ophthalmic lens comprises a central zone, the central zone being a zone surrounded by the first plurality of refractive zones, the first and second plurality of refractive zones being located within an annular zone surrounding the central zone.

10. An ophthalmic lens according to claim 9, characterized in that the diameter of the central zone is between 3-11 mm.

11. The ophthalmic lens of claim 9, wherein the plurality of first refractive zones and the plurality of second refractive zones are evenly distributed within the annular region; or the plurality of first dioptric regions and the plurality of second dioptric regions are non-uniformly distributed within the annular region such that the annular region has a blank region where the first dioptric region and/or the second dioptric region is not located.

12. An ophthalmic lens according to claim 1, characterized in that the plurality of second dioptric zones are arranged on a plurality of second patterns concentrically arranged with the ophthalmic lens, the second dioptric zones on the second patterns of the plurality of second patterns closer to the center of the ophthalmic lens having a smaller pitch.

13. An ophthalmic lens according to claim 1, characterized in that the plurality of first refractive zones and the plurality of second refractive zones are distributed over a plurality of rays starting from the center of the ophthalmic lens, on each of which a first refractive zone and a second refractive zone are distributed.

14. An ophthalmic lens according to claim 13, characterized in that the plurality of rays are evenly distributed on the ophthalmic lens.

15. The ophthalmic lens according to claim 13, characterized in that the number of said plurality of rays is 26-35.

16. The ophthalmic lens according to claim 13,

the number of first dioptric regions is less than the number of second dioptric regions per ray; and/or

When the number of the rays is 2n, the rays form n straight lines.

17. An ophthalmic lens according to claim 1, characterized in that a single first dioptric region of the first dioptric regions and a single second dioptric region of the second dioptric regions have a surface shape selected from spherical, aspherical or toric.

18. An ophthalmic lens according to claim 1, characterized in that the plurality of first refractive zones add a positive refractive power to the corrective refractive power; and/or the second refractive region adds a positive refractive power to the corrective refractive power.

19. An ophthalmic lens according to claim 18, characterized in that the refractive power of the first plurality of refractive zones is equal to the refractive power of the second plurality of refractive zones; or in a direction away from the center of the ophthalmic lens, the plurality of first refractive areas and the plurality of second refractive areas have, overall, a gradually increasing or stepwise increasing refractive power; or in a direction away from the center of the ophthalmic lens, the plurality of first refractive areas and the plurality of second refractive areas have, as a whole, a gradually decreasing or stepwise decreasing refractive power.

20. An ophthalmic lens according to claim 1, characterized in that the projections of the plurality of second dioptric zones on the ophthalmic lens have equal areas.

21. Frame spectacles, characterized in that they are provided with an ophthalmic lens according to any one of claims 1 to 20.