Hyperopia inner out-of-focus lens and out-of-focus glasses
Through the design of the rear surface structure of the back -focaling lenses, the needs of the personalized light changes of the hyperopia group, solving the problem that the lens in the existing technology cannot meet the needs of the hyperopia group, and realizes the effect of corrected vision and the combination of low -cost processing. Essence
Patent Information
- Application Number
- CN202420961961.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-07
AI Technical Summary
In the prior art, only ordinary old light aspherical lenses can be used, which cannot meet the personalized photometric changes of the hyperopic population.
Design a kind of out -of -horizontal lens, and then there are central areas, ring -shaped departure areas and edge areas from the center to the outside. The rear surface is processed according to the prescription.
Through the design of the lens ontology, the correction effect of remote vision and focusing is achieved, and the customer's personalized light changes are required. At the same time, the front surface is low -cost and large -volume processing, and the rear surface is processed according to prescription processing.
Smart Images
Figure CN222420694U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of glasses, in particular to a hyperopic inner defocus lens and defocus glasses. Background Art
[0002] Glasses are a combination of lenses and frames, used to improve vision, protect the eyes or for decorative purposes. Glasses can correct a variety of vision problems, including myopia, hyperopia, astigmatism, presbyopia, strabismus or amblyopia. Among them, defocus glasses are a type of glasses, which are designed based on the defocus principle at the periphery of the lens, so that after wearing the glasses, the object will form a defocus of the peripheral retina in the eye, so as to control the change of the eye axis through the defocus image. The defocus glasses in the prior art are all myopia defocus glasses, which are used for vision correction of myopic groups, but when facing hyperopic groups, only ordinary presbyopic aspherical lenses can be used in testing and research, which cannot meet the customer's personalized light intensity change needs. Utility Model Content
[0003] The utility model aims to provide a hyperopic inner defocus lens and defocus glasses to solve the problem that only ordinary presbyopic aspherical lenses can be used in existing testing and research, which cannot meet the personalized light intensity change requirements of customers.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] On the one hand, the utility model provides a hyperopic inner defocus lens, which comprises a lens body, wherein the lens body comprises a front surface and a rear surface arranged back to back, the front surface is convex, and the rear surface is concave; the rear surface is provided with a central area, an annular defocus area and an edge area from the center to the outside, and the curvature of the annular defocus area is gradually increased from the inner ring to the outer ring; the front surface is used for processing and molding according to a mold, and the rear surface is used for processing and molding according to a prescription.
[0006] As an optional solution of the above-mentioned hyperopic internal defocus lens, the diameter range of the above-mentioned central area is 5mm to 12mm, and the curvature of the above-mentioned central area is any curvature value between +2D and -8D.
[0007] As an optional solution of the above-mentioned hyperopic internal defocus lens, the curvature of the above-mentioned central area has an error variation.
[0008] As an optional solution for the above-mentioned hyperopic internal defocus lens, the range of the above-mentioned error variation is -0.3D to +0.3D.
[0009] As an optional solution of the above-mentioned hyperopic inner defocus lens, the width of the annular defocus area minus the diameter of the central area is in the range of 5 mm to 25 mm.
[0010] As an optional solution of the above-mentioned hyperopic inner defocus lens, the total increase value range of the above-mentioned annular defocus area when it is gradually increased is 4D to 8D.
[0011] As an optional solution of the above-mentioned hyperopic internal defocus lens, the curvature of the above-mentioned edge area is increased, and the increase range of the curvature of the above-mentioned edge area is 0 to 4D.
[0012] As an optional solution of the above-mentioned hyperopic internal defocus lens, the cross-section of the above-mentioned lens body is crescent-shaped.
[0013] As an optional solution of the above-mentioned hyperopic internal defocus lens, the above-mentioned front surface is a spherical surface or an aspherical surface.
[0014] On the other hand, the utility model provides a defocus glasses, including the above-mentioned hyperopic inner defocus lens, the above-mentioned defocus glasses also include a frame, and the above-mentioned edge area of the above-mentioned lens body is arranged on the above-mentioned frame.
[0015] The beneficial effects of the utility model are:
[0016] The hyperopic inner defocus lens comprises a lens body, and the lens body comprises a front surface and a rear surface which are arranged opposite to each other, the front surface is arranged as a convex surface, and the rear surface is arranged as a concave surface, so that the lens body has the ability to correct vision. Among them, the rear surface is provided with a central area, an annular defocus area and an edge area from the center to the outside, and the curvature of the annular defocus area is gradually increased from the inner ring to the outer ring, so that when an object is observed through the lens body, the object will form a hyperopic defocus of the peripheral retina in the eye, and at the same time, the front surface is used for setting according to the mold processing and molding, and there is no need to consider setting the annular defocus area, so the front surface can be processed and manufactured at low cost and in large quantities, and the rear surface is used for setting according to the prescription processing and molding, so the annular defocus area of the rear surface can realize the personalized light intensity change demand according to the customer's requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of the side structure of a hyperopic inner defocus lens provided by an embodiment of the utility model;
[0018] Figure 2 This is a schematic structural diagram of the rear surface of the hyperopic inner defocus lens provided by an embodiment of the utility model.
[0019] In the figure:
[0020] 1. Lens body; 11. Front surface; 12. Back surface; 121. Central area; 122. Annular defocus area; 123. Edge area. DETAILED DESCRIPTION
[0021] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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.
[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0025] This embodiment provides a hyperopic inner defocus lens for correcting the patient's vision.
[0026] like Figure 1 and Figure 2 As shown, the hyperopic internal defocus lens comprises a lens body 1, which comprises a front surface 11 and a rear surface 12 arranged opposite to each other, wherein the front surface 11 is convex and the rear surface 12 is concave, so that the lens body 1 has the ability to correct vision.
[0027] Among them, the rear surface 12 is provided with a central area 121, an annular defocus area 122 and an edge area 123 from the center to the outside, and the curvature of the annular defocus area 122 is gradually increased from the inner ring to the outer ring, so that when observing an object through the lens body 1, the object will form a hyperopic defocus of the peripheral retina in the eye, and at the same time, the front surface 11 is used for processing and forming according to the mold, and there is no need to consider setting the annular defocus area 122, so the front surface 11 can be processed and manufactured in large quantities at low cost, and the rear surface 12 is used for processing and forming according to the prescription, so the annular defocus area 122 of the rear surface 12 can realize personalized light intensity change requirements according to customer requirements. Optionally, the front surface 11 is a spherical or aspherical surface, which is less difficult to manufacture according to the mold, and can shorten the overall manufacturing time of the hyperopic inner defocus lens.
[0028] Further, the diameter of the central area 121 ranges from 5 mm to 12 mm, and the curvature of the central area 121 is any curvature value from +2D to -8D, so that after matching with the front surface 12, it can provide a refractive power for correction, so that the hyperopic internal defocus lens can achieve a normal correction function and meet customer needs. Among them, the curvature of the central area 121 has an error variation, so that the processing difficulty of the central area 121 can be reduced. Optionally, the error variation ranges from -0.3D to +0.3D, so as to control the error within a smaller variation value, thereby ensuring the stability of the central luminosity of the hyperopic internal defocus lens.
[0029] Furthermore, the width of the annular defocusing area 122 minus the diameter of the central area 121 is in the range of 5 mm to 25 mm, so that the annular defocusing area 122 has a sufficient width to facilitate the gradual increase of the curvature from the inner ring to the outer ring and meet customer needs. Specifically, the total increase value of the annular defocusing area 122 when it gradually decreases is in the range of 4D to 8D, so that the curvature of the annular defocusing area 122 of the rear surface 12 gradually increases, so as to control the peripheral hyperopic defocus and ensure the stability of the hyperopic defocus.
[0030] Further, the curvature of the edge region 123 is increased, and the curvature increase range of the edge region 123 is 0 to 4D, so that the thickness of the lens body 1 and the reference curvature of the front surface 11 are reduced by the curvature change of the edge region 123, and the overall weight of the lens body 1 is reduced, making it lighter, more comfortable and more beautiful to wear. Optionally, the cross section of the lens body 1 is crescent-shaped, so that the curvature setting of the front surface 11 and the rear surface 12 can be facilitated, and the curvature change can be controlled.
[0031] In a specific embodiment, a lens body 1 with a diameter of 65 mm is processed using a material with a refractive index of 1.50, an annular defocus area 122 is located on the back surface 12 of the lens body 1, and the front surface 11 uses a semi-finished module with a curvature of +6.0D. The curvature in the central area 121 with a diameter of 6 mm on the back surface 12 is -2.0D. Within the range of the annular defocus area 122 of 6mm to 25mm, the curvature gradually increases from -2.0D to -6.0D, and the curvature in the edge area 123 outside 25mm gradually stabilizes at about -6.5D. In this way, a hyperopic outer defocus lens with a central diopter of +4.0D is realized, and the central thickness can be reduced by 20%-40%.
[0032] The present embodiment also provides a defocus glasses, including the hyperopic inner defocus lens as described above, the defocus glasses also including a frame, the edge area 123 of the lens body 1 is arranged in the frame, so that the defocus glasses can correct vision so that objects in the eye will form a hyperopic defocus of the peripheral retina, so as to control the change of the eye axis through the hyperopic defocus image, wherein the shape of the edge area 123 can be adjusted according to the frame.
[0033] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. A hyperopic inner defocus lens, characterized in that: The lens body (1) comprises a front surface (11) and a rear surface (12) which are arranged in opposite directions, wherein the front surface (11) is arranged in a convex surface and the rear surface (12) is arranged in a concave surface; the rear surface (12) is provided with a central area (121), an annular defocusing area (122) and an edge area (123) from the center to the outside, and the curvature of the annular defocusing area (122) is gradually increased from the inner ring to the outer ring; the front surface (11) is used for processing and molding according to a mold, and the rear surface (12) is used for processing and molding according to a prescription.
2. The hyperopic inner defocus lens according to claim 1, characterized in that: The diameter of the central area (121) ranges from 5 mm to 12 mm, and the curvature of the central area (121) is any curvature value between +2D and -8D.
3. The hyperopic inner defocus lens according to claim 2, characterized in that: The curvature of the central area (121) has an error variation.
4. The hyperopic inner defocus lens according to claim 3, characterized in that: The error variation ranges from -0.3D to +0.3D.
5. The hyperopic inner defocus lens according to claim 1, characterized in that: The width of the annular defocusing area (122) minus the diameter of the central area (121) is in the range of 5 mm to 25 mm.
6. The hyperopic inner defocus lens according to claim 5, characterized in that: The total increase value range of the annular defocus area (122) when it increases gradually is 4D to 8D.
7. The hyperopic inner defocus lens according to claim 1, characterized in that: The curvature of the edge region (123) is increased, and the curvature increase range of the edge region (123) is 0 to 4D.
8. The hyperopic interior defocus lens according to any one of claims 1 to 7, characterized in that: The cross section of the lens body (1) is crescent-shaped.
9. The hyperopic interior defocus lens according to any one of claims 1 to 7, characterized in that: The front surface (11) is a spherical surface or an aspherical surface.
10. A defocused glasses, characterized in that: It comprises the hyperopic internal defocus lens as claimed in any one of claims 1 to 9, the defocus lens also comprising a frame, and the edge area (123) of the lens body (1) is arranged on the frame.