Separated multi-point out-of-focus lens
By designing separate multi-point defocus zones on the lens body, the problem of defocus effect deterioration when the viewing area changes in existing lenses is solved, achieving a larger viewing area and higher wearing comfort to adapt to different vision needs.
Patent Information
- Application Number
- CN202423217874.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The peripheral defocusing lenses of existing eyeglasses deteriorate in defocusing effect when the field of vision changes, and the coverage area is limited, affecting wearing comfort and vision protection.
Design a split multi-point defocus lens with a central correction circle and four separate fan-shaped defocus areas surrounding it, including a first upper defocus area, a second lower defocus area, a third left defocus area and a fourth right defocus area, each with horizontal and arc-shaped defocus bands. The lens body achieves a smooth transition between different visual areas through multiple raised defocus units.
It improves the comfort of visual zone switching and defocusing effect, increases the visual zone range, adapts to different vision needs, and enhances wearing comfort and vision protection.
Smart Images
Figure CN223611804U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of off-focus lenses, in particular to a separated multi-point off-focus lens. BACKGROUND
[0002] From the current market feedback, frame glasses are still the main correction method and the method for controlling the development of myopia of the vast majority of myopia population. The main methods are progressive multifocal frame glasses, and the progressive multifocal lens realizes the addition of positive lens power for near vision through the change of lens power on the central visual line channel. Its characteristic is that the myopia power is gradually reduced from the top to the bottom on the lens, so that the wearer uses different powers when looking at distant and near objects, thereby achieving the purpose of relaxing accommodation. The peripheral off-focus frame glasses slow down the elongation of the eye axis through the principle of reducing the peripheral hypermetropia off-focus of the retina. The peripheral off-focus of the retina of the wearer of ordinary frame glasses (single-vision lens) is hypermetropia off-focus, that is, the peripheral focal point falls behind the retina. The off-focus lens can change the peripheral hypermetropia off-focus of the retina into myopia off-focus, thereby inhibiting the growth of the eye axis to control the degree.
[0003] Therefore, a new type of separated multi-point off-focus lens which is comfortable to wear and protects eyesight needs to be researched. CONTENT OF THE UTILITY MODEL
[0004] Therefore, the utility model wants to solve the technical problem to provide a separated multi-point off-focus lens, which avoids the trouble that the off-focus effect is poor with the change of the visual field.
[0005] In order to solve the above technical problem, the utility model discloses a separated multi-point off-focus lens, which comprises:
[0006] The lens body has a central correction circle and four separated fan-shaped off-focus areas around the central correction circle. The fan-shaped off-focus areas are divided into a first upper off-focus area, a second lower off-focus area, a third left off-focus area and a fourth right off-focus area. The first upper off-focus area and the second lower off-focus area have seven horizontal first off-focus bands, and the third left off-focus area and the fourth right off-focus area have nine arc-shaped second off-focus bands. The first to second circles of the first off-focus bands have an off-focus amount of 5.0D, the third to fifth circles have an off-focus amount of 4.5D, and the sixth to seventh circles have an off-focus amount of 5.0D. The first circle of the second off-focus bands has an off-focus amount of 5.0D, the second to third circles have an off-focus amount of 4.0D, the fourth to sixth circles have an off-focus amount of 4.5D, and the outer three circles have an off-focus amount of 5.0D.
[0007] According to an embodiment of the present application, the first and second defocus zones are composed of a plurality of convex defocus units, and the defocus units are circular with a diameter of 0.1-1.5mm.
[0008] According to an embodiment of the present application, the central correction circle has a diameter of 8-10mm.
[0009] According to an embodiment of the present application, the first and second defocus zones are composed of a plurality of convex defocus units, and the defocus units are circular with a diameter of 0.1-1.5mm.
[0010] Compared with the prior art, the present application can achieve the following technical effects:
[0011] The separated fan-shaped defocus zones are arranged on the lens body to form four defocus zones, and the upper and lower horizontal defocus zones and the left and right arc-shaped defocus zones are converted, which is suitable for frame assembly and use, facilitates the transition of eye viewing area, and improves comfort.
[0012] Of course, any product implementing the present application does not necessarily need to achieve all the technical effects described above. BRIEF DESCRIPTION OF DRAWINGS
[0013] The accompanying drawings, which are included to provide a further understanding of the present application and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:
[0014] Figure 1 is a schematic diagram of a separated multi-point defocus lens surface according to an embodiment of the present application.
[0015] IDENTIFICATION OF DRAWINGS
[0016] Lens body 10, central correction circle 11, first upper defocus zone 21, second lower defocus zone 22, third left defocus zone 23, and fourth right defocus zone 24. DETAILED DESCRIPTION
[0017] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and embodiments, so that the implementation process of how to apply technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
[0018] Reference will be made to Figure 1 , Figure 1 is a schematic diagram of a separated multi-point defocus lens surface according to an embodiment of the present application.
[0019] As shown in the figure, a full-coverage multi-point defocus lens comprises a lens body 10, the lens body 10 has a central correction circle area 11 and four separate fan-shaped defocus areas surrounding the central correction circle area 11, the fan-shaped defocus areas are divided into a first upper defocus area 21, a second lower defocus area 22, a third left defocus area 23 and a fourth right defocus area 24, and wherein the first upper defocus area 21 and the second lower defocus area 22 have seven horizontally arranged first defocus bands, the third left defocus area 23 and the fourth right defocus area 24 have nine arc-shaped arranged second defocus bands, the first to second circles of the first defocus bands have a defocus amount of 5.0D, the third to fifth circles have a defocus amount of 4.5D, and the sixth to seventh circles have a defocus amount of 5.0D, the first circle of the second defocus bands has a defocus amount of 5.0D, the second to third circles have a defocus amount of 4.0D, the fourth to sixth circles have a defocus amount of 4.5D, and the outer three circles have a defocus amount of 5.0D.
[0020] In an embodiment of the present application, the lens body 10 is formed by the central correction circle area 11 and the peripheral defocus area, and the defocus area is arranged in a separate manner and composed of four fan-shaped defocus areas, namely the first upper defocus area 21, the second lower defocus area 22, the third left defocus area 23 and the fourth right defocus area 24.
[0021] Among them, the first upper defocus area 21 and the second lower defocus area 22 are symmetrical about up and down, and the third left defocus area 23 and the fourth right defocus area 24 are symmetrical about left and right, which is convenient for the conversion of the up and down and left and right visual fields of the eyes, and the fan-shaped included angle of the third left defocus area 23 is greater than that of the first upper defocus area 21, because most of the frames are flat at present, and the left and right spacing is large, which can provide a larger visual field range and is more comfortable for daily use. Further, the first upper defocus area 21 and the second lower defocus area 22 have seven horizontally arranged first defocus bands, and the third left defocus area 23 and the fourth right defocus area 24 have nine arc-shaped arranged second defocus bands, which are arc-shaped on the left and right and horizontally spread on the up and down, and are more suitable for the conversion between the visual fields on the frame type.
[0022] In detail, the first to second circles of the first defocus bands have a defocus amount of 5.0D, the third to fifth circles have a defocus amount of 4.5D, and the sixth to seventh circles have a defocus amount of 5.0D, the first circle of the second defocus bands has a defocus amount of 5.0D, the second to third circles have a defocus amount of 4.0D, the fourth to sixth circles have a defocus amount of 4.5D, and the outer three circles have a defocus amount of 5.0D, which completes the conversion of the defocus amount and makes the conversion between the visual fields more comfortable.
[0023] In a preferred embodiment, the first defocus band and the second defocus band are both composed of a plurality of convex defocus units, which complete the change of the defocus amount, can be engraved on the metal lens mold by a precision engraving machine, and then be formed by resin curing.
[0024] In addition, the diameter of the central correction circle area is 8-10mm, which is the central visual field of the eyes, and the diopter is selected according to the user's degree.
[0025] In summary, the utility model discloses through setting up the separate fan -shaped defocus area, forms four defocus areas on the left and right of the lens body, and the transition of eye area is convenient, and the comfort is improved.
[0026] The above description shows and describes several preferred embodiments of the utility model, but as previously described, it should be understood that the utility model is not limited to the form disclosed herein, should not be considered as excluding other embodiments, and can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein by the above teaching or related art or knowledge. The modification and change of the person skilled in the art without departing from the spirit and scope of the utility model should be within the protection scope of the claims attached to the utility model.
Claims
1. A split multi-vision varifocal lens characterized in that, Comprising: A lens body having a central correction circle and four separate fan-shaped defocus zones surrounding the central correction circle, the fan-shaped defocus zones being divided into a first upper defocus zone, a second lower defocus zone, a third left defocus zone, and a fourth right defocus zone, and wherein the first upper defocus zone and the second lower defocus zone have seven first defocus bands arranged horizontally, the third left defocus zone and the fourth right defocus zone have nine second defocus bands arranged in an arc shape, the first to second circles of the first defocus bands have a defocus amount of 5.0D, the third to fifth circles have a defocus amount of 4.5D, and the sixth to seventh circles have a defocus amount of 5.0D, the first circle of the second defocus bands has a defocus amount of 5.0D, the second to third circles have a defocus amount of 4.0D, the fourth to sixth circles have a defocus amount of 4.5D, and the outer three circles have a defocus amount of 5.0D.
2. The split multi-focal lens of claim 1, wherein, Wherein the first defocus bands and the second defocus bands are both composed of a plurality of convex defocus units arranged in a circular shape with a diameter of 0.1mm-1.5mm.
3. The split multi-focal lens of claim 1, wherein, Wherein the central correction circle has a diameter of 8-10mm.
4. The split multi-focal lens of claim 1, wherein, Wherein the first upper defocus zone and the second lower defocus zone are symmetrical about the upper and lower, the third left defocus zone and the fourth right defocus zone are symmetrical about the left and right, and the included angle of the third left defocus zone is greater than that of the first upper defocus zone.