CN219978651U

CN219978651U - Defocused lens based on discontinuous curved surface

Info

Publication number: CN219978651U
Application number: CN202321080123.1U
Authority: CN
Inventors: 张菁浩
Original assignee: Jiangsu Zhongjing Industrial Technology Co ltd
Current assignee: Jiangsu Zhongjing Industrial Technology Co ltd
Priority date: 2023-05-08
Filing date: 2023-05-08
Publication date: 2023-11-07
Anticipated expiration: 2033-05-08

Abstract

The utility model provides a defocusing lens based on a discontinuous curved surface, which comprises a lens body, wherein a central vision area is arranged at the central position of the lens body, a peripheral defocusing area is arranged at the radial outer side of the central vision area, the peripheral defocusing area comprises a plurality of groups of defocusing rings, the curvature radius of the defocusing rings is gradually increased from inside to outside, and smooth connection is arranged between the adjacent defocusing rings; through setting up the defocusing district around, the multiunit defocusing ring in the defocusing district around provides different defocusing amounts for the lens body has the defocusing amount of increase from the center to the outside, thereby realizes that the light beam that gets into eyes forms the defocusing, and object formation is on retina or the retina place ahead, can delay, restrain eye axis growth, delay and/or control myopia deepening, and the defocusing ring of different defocusing amounts can effectively reduce the aberration when guaranteeing the defocusing effect, has greatly improved wearing travelling comfort.

Description

Defocused lens based on discontinuous curved surface

Technical Field

The utility model relates to the technical field of defocusing lenses, in particular to a defocusing lens based on a discontinuous curved surface.

Background

Defocus, i.e. out of focus, should be in focus on the retina, but not in focus. Focusing on the back of the retina is called hyperopic defocus and focusing on the front of the retina is called myopic defocus. Defocus is an important visual feedback signal that can alter the way the developing eye grows. If the eye is stimulated by wearing a lens out of focus during eye development, the eye will develop toward the location of the out of focus signal to achieve orthovisualization. The defocusing glasses are frame lenses designed by the peripheral myopia defocusing principle, after the lenses are worn, objects can form peripheral retina myopia defocusing in eyes, and the defocusing images are used for controlling the growth of eye axes and delaying the deepening of myopia, so that the defocusing glasses are one of clinically proven effective means for controlling the deepening of myopia.

However, most of the defocus amounts of the existing defocus lenses are fixed, and for users with high-degree axial myopia, the effect of slowing down myopia is not ideal, lenses with larger defocus amounts are required to be worn, and the excessive defocus amounts cause dizziness of the users and influence normal use.

Therefore, there is a need for a defocus lens based on a discontinuous curved surface, which can solve the problems of poor myopia slowing effect, uncomfortable wearing and the like caused by the fixed defocus amount of the existing defocus lens.

Disclosure of Invention

The utility model aims to provide a defocusing lens based on a discontinuous curved surface, so as to solve the problems of poor myopia slowing effect, uncomfortable wearing and the like caused by fixed defocusing amount of the conventional defocusing lens.

In order to achieve the above object, the present utility model provides the following solutions:

the utility model provides a defocusing lens based on a discontinuous curved surface, which comprises a lens body, wherein a central vision area is arranged at the central position of the lens body, a peripheral defocusing area is arranged at the radial outer side of the central vision area, the peripheral defocusing area comprises a plurality of groups of defocusing rings, the curvature radius of the defocusing rings is gradually increased from inside to outside, and smooth connection is arranged between the neighboring defocusing rings.

Preferably, the central viewing area has a circular or elliptical structure.

Preferably, the luminance difference between the central optic zone and the peripheral defocus zone is 1.00D-3.00D.

Preferably, the defocus amount of the peripheral defocus region is 3.00D to 6.00D.

Preferably, the width of the defocusing ring is 0.5-1.5mm.

Preferably, the distance between adjacent defocused rings is 1mm.

Compared with the prior art, the utility model has the following beneficial technical effects:

the utility model provides a defocusing lens based on a discontinuous curved surface, which comprises a lens body, wherein a central vision area is arranged at the central position of the lens body, a peripheral defocusing area is arranged at the radial outer side of the central vision area, the peripheral defocusing area comprises a plurality of groups of defocusing rings, the curvature radius of the defocusing rings is gradually increased from inside to outside, and smooth connection is arranged between every two adjacent defocusing rings; through setting up the defocusing district around, the multiunit defocusing ring in the defocusing district around provides different defocusing amounts for the lens body has the defocusing amount of increase from the center to the outside, thereby realizes that the light beam that gets into eyes forms the defocusing, and object formation is on retina or the retina place ahead, can delay, restrain eye axis growth, delay and/or control myopia deepening, and the defocusing ring of different defocusing amounts can effectively reduce the aberration when guaranteeing the defocusing effect, has greatly improved wearing travelling comfort.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of a non-continuous curved surface-based defocus lens of the present utility model;

fig. 2 is a front view of a defocus lens based on a discontinuous curved surface according to the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model aims to provide a defocused lens based on a discontinuous curved surface so as to solve the problems in the prior art.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Example 1:

the present embodiment provides a defocus lens based on a discontinuous curved surface, as shown in fig. 1 and 2, including a lens body 1, a central optic zone 2 is disposed at a central position of the lens body 1, the central optic zone 2 is of a circular structure, the diameter of which is controlled to be 5-10mm, a peripheral defocus zone 3 is disposed at a radial outer side of the central optic zone 2, and a luminance difference between the central optic zone and the peripheral defocus zone is 1.00D-3.00D, so as to achieve a defocus effect, the peripheral defocus zone 3 includes a plurality of groups of defocus rings 4, the radius of curvature of the defocus rings 4 gradually increases from inside to outside, the width of the defocus rings 4 is 0.5-1.5mm, corresponding to the embodiment, the widths of the three groups of defocus rings can be sequentially 0.5mm, 1mm and 1.5mm, respectively, and correspondingly, the defocus amount of the peripheral defocus zone 3 is 3.00D-6.00D, that is, namely, the defocus amounts of the three groups of defocus rings 4 can be gradually increased from inside to outside, and the three groups of defocus rings can be respectively 3.00D-6.00D, and the adjacent defocus rings are preferably connected with each other by a smooth distance of 1.50 mm.

According to the defocus lens based on the discontinuous curved surface, the peripheral defocus region 3 is arranged, and the three groups of defocus rings 4 in the peripheral defocus region 3 provide different defocus amounts, so that the lens body 1 has increased defocus amount from the center to the outside, light beams entering eyes form defocus, objects are imaged on or in front of retina, eye axis growth can be delayed and inhibited, myopia deepening can be delayed and/or controlled, aberration can be effectively reduced while defocus effects are guaranteed by the defocus rings 4 with different defocus amounts, and wearing comfort is greatly improved.

The principles and embodiments of the present utility model have been described with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In summary, the present description should not be construed as limiting the utility model.

Claims

1. A defocus lens based on a discontinuous curved surface, characterized in that: the lens comprises a lens body, a central vision area is arranged at the central position of the lens body, a surrounding defocusing area is arranged at the radial outer side of the central vision area, the surrounding defocusing area comprises a plurality of groups of defocusing rings, the radius of curvature of the defocusing rings is gradually increased from inside to outside, and smooth connection is arranged between every two adjacent defocusing rings.

2. The non-continuous curve based defocus lens of claim 1 wherein: the central viewing area is of a circular or oval structure.

3. The non-continuous curve based defocus lens of claim 1 wherein: and the luminosity difference between the central vision region and the peripheral defocusing region is 1.00D-3.00D.

4. The non-continuous curve based defocus lens of claim 1 wherein: the defocus amount of the surrounding defocus region is 3.00D-6.00D.

5. The non-continuous curve based defocus lens of claim 1 wherein: the width of the defocusing ring is 0.5-1.5mm.

6. The non-continuous curve based defocus lens of claim 1 wherein: the distance between adjacent defocused rings is 1mm.