Peripheral out-of-focus lens capable of inhibiting astigmatism development

Abstract

The utility model discloses a peripheral out-of-focus lens capable of inhibiting astigmatism development, which comprises a substrate and a micro-structure lens array regularly distributed on the substrate, the substrate comprises a front type A and a rear type B, the micro-structure lens array is positioned on the front type A, the micro-structure lens array is formed by regular micro-lens monomers with the same structure, and the micro-lens monomers are positioned on the rear type B; the long axis directions of the regular micro lens monomers are the same; an included angle is formed between the astigmatism direction generated by the micro-structure lens array and the astigmatism direction of the rear type B; the utility model has the beneficial effects that vision and astigmatism can be corrected through the substrate and the regularly distributed micro-structure lens array, and meanwhile, peripheral defocus and astigmatism defocus are generated by utilizing the micro-structure lens array, so that sufficient defocus signal stimulation can be formed at the periphery of the retina of a wearer, and vision management is optimized; by controlling the included angle between the astigmatism direction of the microstructure lens array and the astigmatism direction of the substrate, astigmatism management is further optimized, and the problem that astigmatism degrees of a wearer are deepened can be avoided.

Description

Technical Field

[0001] The utility model relates to a spectacle lens, in particular to a peripheral defocused lens capable of suppressing the development of astigmatism, belonging to the technical field of spectacle lenses. Background Art

[0002] During the development of the eye, defocus stimulation is given by wearing glasses, and the eyeball will develop towards the position of the defocus signal. Clinically, it is found that the defocus signal of the peripheral retina plays an important role in regulating the growth and development of the eyeball, especially when the central and peripheral visual signals are inconsistent, the peripheral defocus signal will dominate. The current mainstream vision management lenses are peripheral defocus lenses, which have good clinical effects, but some wearers will experience an abnormal increase in astigmatism. This is because the microstructure or microlens of the peripheral defocus lens produces additional astigmatism, which will induce an increase in the wearer's astigmatism. How to suppress the side effects of peripheral defocus lenses inducing increased astigmatism and how to provide effective astigmatism directions to assist the wearer in vision management of astigmatism have become urgent issues to be solved by current defocus lenses. Summary of the invention

[0003] Purpose of the invention: The purpose of the utility model is to propose a peripheral defocus lens that can inhibit the development of astigmatism, so as to solve the problem of increased astigmatism induced by peripheral defocus lenses, and to provide an effective astigmatism management solution.

[0004] Technical solution: A peripheral defocus lens capable of suppressing the development of astigmatism, comprising a substrate and a microstructure lens array regularly distributed on the substrate, wherein the substrate comprises a front type A and a rear type B, the microstructure lens array is located on the front type A, the rear type B is provided with an astigmatism surface shape, the front type A and the rear type B jointly form a basic refractive power, the microstructure lens array is composed of regular microlens monomers with the same structure, the long axis directions of all regular microlens monomers in the microstructure lens array are in the same direction, and the axes of the regular microlens monomers are parallel to each other; there is an angle between the astigmatism direction generated by the regularly distributed microstructure lens array and the astigmatism direction of the rear type B.

[0005] The utility model can correct vision and astigmatism through a substrate and a regularly distributed microstructure lens array. At the same time, the regularly distributed microstructure lens array provides a defocus amount that can be imaged in front of or behind the retina, and the regularly distributed microstructure lens array can produce additional astigmatism compared to the rear type B. The regularly distributed microstructure lens array is used to produce peripheral defocus and astigmatism defocus, which can ensure that sufficient defocus signal stimulation is formed in the periphery of the wearer's retina, thereby optimizing vision management; by controlling the angle between the astigmatism direction of the regularly distributed microstructure lens array and the astigmatism direction of the substrate, the management of astigmatism is further optimized, which can avoid the problem of inducing the wearer's astigmatism to deepen.

[0006] Preferably, in order to accurately control the astigmatism, the regular microlens monomer is a rectangular microlens when projected from top view.

[0007] Preferably, in order to further improve the control accuracy of astigmatism, the rectangular microlens is an astigmatism cylindrical lens with a degree of -8D~8D.

[0008] Preferably, in order to take into account the adjustment of two types of diopter at the same time, the regular microlens monomer is an elliptical microlens when projected from top view.

[0009] Preferably, in order to further improve the adjustment accuracy of the two types of diopter, the elliptical microlens includes a diopter spherical lens and an astigmatism diopter cylindrical lens, the diopter range of the spherical lens is -10D~+10D, and the astigmatism diopter range of the cylindrical lens is -8D~8D.

[0010] Preferably, in order to arrange more regular microlens monomers in the microstructure lens array and thus form sufficient defocus signal stimulation, the long axis size of the regular microlens monomers ranges from 0.6 mm to 1.8 mm, and the ratio of the short axis to the long axis ranges from 0.2 to 0.99.

[0011] Preferably, in order to reduce the difficulty of processing the microstructure lens array, the interval between the regular microlens monomers ranges from 0.1 mm to 1 mm.

[0012] Preferably, in order to further optimize the management of astigmatism, the angle between the astigmatism direction generated by the regularly distributed microstructure lens array and the astigmatism direction of the rear type B is not less than 1°.

[0013] Preferably, in order to meet the requirements of vision correction and clear imaging, the microstructure lens array is distributed in a ring shape, and the number of rings is not less than 1, and a non-microstructure area is provided in the central area of ​​the microstructure lens array.

[0014] Preferably, in order to increase the defocus stimulation signal and satisfy the requirements of vision correction and clear imaging, the non-microstructured area in the central area of ​​the microstructure lens array is a circular area with a diameter of 4 to 10 mm.

[0015] Beneficial effects: The utility model can correct vision and astigmatism through a substrate and a regularly distributed microstructure lens array, and at the same time utilizes a regularly distributed microstructure lens array to generate peripheral defocus and astigmatism defocus, which can ensure that sufficient defocus signal stimulation is formed around the wearer's retina, thereby optimizing vision management; by controlling the angle between the astigmatism direction of the regularly distributed microstructure lens array and the astigmatism direction of the substrate, the management of astigmatism is further optimized, which can avoid inducing the wearer's astigmatism to deepen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model 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 in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic structural diagram of a regular microlens monomer of the utility model;

[0019] Figure 3 This is a schematic diagram of the astigmatism direction of the utility model;

[0020] Figure 4 This is the first embodiment of the microstructure lens array facets of the utility model;

[0021] Figure 5 This is the second embodiment of the microstructure lens array facets of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0025] like Figure 1 , 2 As shown in Figure 3, a peripheral defocus lens capable of suppressing the development of astigmatism comprises a substrate 1 and a microstructure lens array 2 regularly distributed on the substrate 1, wherein the substrate 1 comprises a front type A and a rear type B, the microstructure lens array 2 is located on the front type A, the rear type B is provided with an astigmatism surface shape, the front type A and the rear type B jointly form a basic refractive power, and is characterized in that: the microstructure lens array 2 is composed of regular microlens monomers with the same structure, the long axis directions of all regular microlens monomers in the microstructure lens array 2 are in the same direction, and the axes of the regular microlens monomers are parallel to each other; there is an angle between the astigmatism direction generated by the regularly distributed microstructure lens array 2 and the astigmatism direction of the rear type B.

[0026] The utility model can correct vision and astigmatism through a substrate 1 and a regularly distributed microstructure lens array 2. At the same time, the regularly distributed microstructure lens array 2 provides a defocus amount that can be imaged in front of or behind the retina, and the regularly distributed microstructure lens array 2 can produce additional astigmatism compared to the rear type B. The regularly distributed microstructure lens array 2 is used to produce peripheral defocus and astigmatism defocus, which can ensure that sufficient defocus signal stimulation is formed in the periphery of the wearer's retina, thereby optimizing vision management; by controlling the angle between the astigmatism direction of the regularly distributed microstructure lens array and the astigmatism direction of the substrate, the management of astigmatism is further optimized, which can avoid the problem of inducing the wearer's astigmatism to deepen.

[0027] In order to accurately control the astigmatism, the regular microlens monomer is a rectangular microlens 201 when projected from top view. The rectangular microlens 201 is an astigmatism cylindrical lens with a degree of -8D to 8D.

[0028] In order to adjust both types of diopters, the regular microlens monomer is an elliptical microlens 202 in top view. The elliptical microlens 202 includes a spherical lens with diopters and a cylindrical lens with astigmatism. The diopters of the spherical lens range from -10D to +10D, and the diopters of the cylindrical lens with astigmatism range from -8D to 8D.

[0029] In order to arrange more regular microlens monomers in the microstructure lens array 2 and thus form sufficient defocus signal stimulation, the long axis size of the regular microlens monomers ranges from 0.6 mm to 1.8 mm, and the ratio of the short axis to the long axis ranges from 0.2 to 0.99.

[0030] In order to reduce the difficulty of processing the microstructure lens array, the interval between the regular microlens monomers ranges from 0.1 mm to 1 mm.

[0031] In order to further optimize the management of astigmatism, the angle between the astigmatism direction generated by the regularly distributed microstructure lens array 2 and the astigmatism direction of the rear type B is not less than 1°.

[0032] In order to meet the requirements of vision correction and clear imaging, the microstructure lens array is distributed in a ring shape, and the number of rings is not less than 1, and a non-microstructure area is provided in the central area of ​​the microstructure lens array.

[0033] In order to increase the defocus stimulation signal and satisfy the requirements of vision correction and clear imaging, the non-microstructured area in the central area of ​​the microstructure lens array is a circular area with a diameter of 4 to 10 mm. Embodiment 1

[0034] like Figure 4 As shown, a peripheral defocus lens capable of suppressing the development of astigmatism comprises a substrate 1 and a regularly distributed microstructure lens array 2. The surface types of the front type A and the rear type B are aspherical, and the microstructure lens array adopts a circular distribution of elliptical microstructures 202 when viewed from above. The refractive power of the substrate 1 is -3.0D (shared by the front type A and the rear type B), and the cylindrical power is +2.0D (shared by the rear type B only), and the astigmatism direction is 90°. The elliptical microstructures 202 are placed horizontally when viewed from above, and the defocus amount is +3.5D, the astigmatism is +1.5D, and the astigmatism direction is 45°. The long axis size of the microstructure is 0.9mm, and the interval between the microstructures is 0.4mm. The ratio of the short axis to the long axis of the microstructure is 0.5. The 9mm area in the center of the microstructure lens array is a microstructure-free area. Embodiment 2

[0035] like Figure 5As shown, a peripheral defocus lens capable of suppressing the development of astigmatism comprises a substrate 1 and a regularly distributed microstructure lens array 2, the surface types of the front type A and the rear type B are free-form surface types, the microstructure lens array adopts a hexagonal distribution of elliptical microstructures 202 when viewed from above, the refractive power of the substrate 1 is -2.0D in spherical degree (shared by the front type A and the rear type B), -2.0D in cylindrical degree (shared by the rear type B only), the astigmatism direction is 180°, the elliptical microstructures 202 are placed horizontally when viewed from above, the defocus amount is +4.5D, the astigmatism is +3.5D, and the astigmatism direction is 160°. The long axis size of the microstructure is 0.8mm, and the interval range between the microstructures is 0.3mm. The ratio range of the short axis to the long axis of the microstructure is 0.55. The 8mm area in the center of the microstructure lens array is a microstructure-free area.

[0036] The utility model proposes a peripheral defocus lens capable of suppressing the development of astigmatism. Vision and astigmatism can be corrected through a substrate and a regularly distributed microstructure lens array. At the same time, peripheral defocus and astigmatism defocus are generated by utilizing the regularly distributed microstructure lens array, thereby ensuring that sufficient defocus signal stimulation is formed around the wearer's retina, thereby optimizing vision management. By controlling the angle between the astigmatism direction of the regularly distributed microstructure lens array and the astigmatism direction of the substrate, the management of astigmatism is further optimized, thereby avoiding the problem of inducing an increase in the degree of astigmatism of the wearer.

[0037] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A peripheral defocus lens capable of suppressing the development of astigmatism, comprising a substrate (1) and a microstructure lens array (2) regularly distributed on the substrate (1), the substrate (1) comprising a front shape A and a rear shape B, the microstructure lens array (2) being located on the front shape A, the rear shape B being provided with an astigmatism surface shape, the front shape A and the rear shape B jointly forming a basic diopter, characterized in that: The microstructure lens array (2) is composed of regular microlens monomers with the same structure. The long axis directions of all the regular microlens monomers in the microstructure lens array (2) are in the same direction, and the axes of the regular microlens monomers are parallel to each other. The astigmatism direction generated by the regularly distributed microstructure lens array (2) has an angle with the astigmatism direction of the rear type B.

2. The peripheral defocus lens capable of suppressing the development of astigmatism according to claim 1, characterized in that: The regular microlens monomer is a microlens (201) that is rectangular in shape when projected from above.

3. The peripheral defocus lens capable of suppressing the development of astigmatism according to claim 2, characterized in that: The rectangular microlens (201) is a cylindrical lens with a diopter of -8D to 8D.

4. The peripheral defocus lens capable of suppressing the development of astigmatism according to claim 1, characterized in that: The regular microlens monomer is an elliptical microlens (202) when projected from above.

5. The peripheral defocus lens capable of suppressing the development of astigmatism according to claim 4, characterized in that: The elliptical microlens (202) comprises both a spherical lens with a diopter and a cylindrical lens with a diopter of astigmatism, the diopter range of the spherical lens is -10D to +10D, and the diopter range of the cylindrical lens with a diopter of astigmatism is -8D to 8D.

6. The peripheral defocus lens capable of suppressing the development of astigmatism according to claim 1, characterized in that: The long axis size of the regular microlens monomer ranges from 0.6 mm to 1.8 mm, and the ratio of the short axis to the long axis ranges from 0.2 to 0.

99.

7. The peripheral defocus lens capable of suppressing the development of astigmatism according to claim 6, characterized in that: The interval between the regular microlens monomers ranges from 0.1 mm to 1 mm.

8. The peripheral defocus lens capable of suppressing the development of astigmatism according to claim 1, characterized in that: The angle between the astigmatism direction generated by the regularly distributed microstructure lens array (2) and the astigmatism direction of the rear type B is not less than 1°.

9. The peripheral defocus lens capable of suppressing the development of astigmatism according to claim 1, characterized in that: The microstructure lens array (2) is distributed in a ring shape, and the number of rings is not less than 1. A non-microstructure area is provided in the central area of ​​the microstructure lens array (2).

10. The peripheral defocus lens capable of suppressing the development of astigmatism according to claim 9, characterized in that: The non-microstructured area in the central region of the microstructure lens array (2) is a circular area with a diameter of 4 to 10 mm.

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