Full-coverage multi-point out-of-focus lens
By setting inner and outer defocusing bands with decreasing refractive power on the inner side of the lens and a low-light anti-reflection unit on the outer side, the problem of unstable defocus effect of eyeglasses is solved, and the comfort of visual zone switching and defocus effect are improved.
Patent Information
- Application Number
- CN202423218148.0
- 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 defocusing effect of existing eyeglasses tends to deteriorate during visual zone transitions, and the coverage area is limited, affecting the comfort of visual accommodation.
A full-coverage multi-point defocus lens is designed, with 6 inner defocus bands and 2 outer defocus bands on the inner side of the lens body. The refractive power of the defocus bands gradually decreases, and a low-light anti-reflection unit is set on the outer side. The low-light anti-reflection effect is formed by laser engraving.
It achieves a more comfortable transition in the field of view, reduces stray strong light interference, and improves the stability and comfort of the defocus effect.
Smart Images
Figure CN223611805U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of off-focus lenses, in particular relates to a full-coverage multi-point off-focus lens. BACKGROUND
[0002] From the current market feedback, frame glasses are still the main correction way and the way of controlling myopia development of most myopia population. The main method has progressive multi-focal frame glasses, and the progressive multi-focal lens realizes the addition of near positive power through the change of power on the central visual line channel of the lens. Its characteristics are that the myopia power is gradually reduced from the top to the bottom on the lens, so that the wearer adopts 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 will appear hypermetropia off-focus when wearing ordinary frame glasses (single vision lenses), that is, the peripheral focus 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. However, because the peripheral off-focus effect in the peripheral off-focus frame glasses acts on the eyeball, the eyeball movement and the myopia control effect have certain correlation, the off-focus coverage area is small, and the corresponding off-focus effect will be poor when the visual line is constantly converted between the visual zones.
[0003] Therefore, a new type of full-coverage 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 full-coverage multi-point off-focus lens, to avoid the trouble that the off-focus effect is poor with the conversion of the visual zone.
[0005] In order to solve the above technical problem, the utility model discloses a full-coverage multi-point off-focus lens, which comprises:
[0006] The lens body has a central correction circle, a full-coverage off-focus area located on the periphery of the central correction circle, and a low-power area located on the periphery of the full-coverage off-focus area.
[0007] The full-coverage off-focus area is provided with 6 inner off-focus bands and 2 outer off-focus bands on the inner side of the lens body, the inner off-focus bands and the outer off-focus bands are composed of a plurality of off-focus units, the interval of the off-focus units of the inner off-focus bands is smaller than that of the outer off-focus bands, the refractive power of the off-focus bands gradually decreases from inside to outside, and decreases by 0.25D each time. The outer side of the full-coverage off-focus area is provided with a micro light anti-reflection unit marked by laser, and the micro light anti-reflection unit is concentric with the off-focus unit.
[0008] According to one embodiment of the utility model, the above-mentioned off-focus unit is set as a circular groove with a diameter of 20-200 microns.
[0009] According to an embodiment of the present application, the diameter of the micro light transmission unit is less than the diameter of the defocus unit.
[0010] According to an embodiment of the present application, the innermost diopter of the defocus zone is 5-6D.
[0011] According to an embodiment of the present application, the depth of the micro light transmission unit is 12-50μm.
[0012] Compared with the prior art, the present application can achieve the following technical effects:
[0013] By setting the full-coverage defocus zone, the inner and outer defocus zones are set on the inner side of the lens body to form defocus conversion, facilitating the transition of the eye viewing area and improving comfort. In addition, the micro light transmission unit corresponding to the defocus unit of the defocus zone is set on the outer side of the lens body to improve light transmission during focal point conversion and reduce stray light interference.
[0014] Of course, any product implementing the present application does not necessarily need to achieve all the technical effects described above. BRIEF DESCRIPTION OF DRAWINGS
[0015] The drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:
[0016] Figure 1 is a schematic view of the inner surface of a full-coverage multi-point defocus lens according to an embodiment of the present application.
[0017] IDENTIFICATION OF DRAWINGS
[0018] Lens body 10, central correction circle area 11, full-coverage defocus area 12, low light area 13, defocus unit 20. DETAILED DESCRIPTION
[0019] The embodiments of the present application will be described in detail below with reference to the drawings and embodiments, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented.
[0020] Please refer to Figure 1 , Figure 1 is a schematic view of the inner surface of a full-coverage multi-point defocus lens according to an embodiment of the present application.
[0021] As shown in the figure, a full-coverage multi-point defocus lens comprises:
[0022] The lens body 10 has a central correction circle 11, a full-coverage defocus area 12 located at the periphery of the central correction circle 11, and a low-light area 13 located at the periphery of the full-coverage defocus area 12.
[0023] In an embodiment of the present application, the lens body 10 is composed of a central correction circle 11, a full-coverage defocus area 12, and a low-light area 13 at the edge, wherein the central correction circle 11 is circular, with a diameter ranging from 4-8mm, serving as the central visual field of the eye, and the refractive power is selected according to the user's degree. The full-coverage defocus area 12 is arranged around the central correction circle 11 to complete the defocus conversion. The outermost low-light area 13 is the edge light area, which is used for cutting when assembled into the frame, reducing the design cost.
[0024] The full-coverage defocus area 12 is provided with 6 inner defocus bands and 2 outer defocus bands on the inner side of the lens body 10, the inner defocus bands and the outer defocus bands are both composed of a plurality of defocus units 20, and the interval of the defocus units of the inner defocus bands is smaller than that of the outer defocus bands, the refractive power of the defocus bands gradually decreases from inside to outside, and decreases by 0.25D each time; the outer side of the full-coverage defocus area is provided with a micro-light anti-reflection unit engraved by laser, and the micro-light anti-reflection unit is concentric with the defocus unit. In this embodiment, the full-coverage defocus area 12 is formed with multiple defocus bands on the inner side surface of the lens body 10, which can be processed into corresponding defocus bands on the metal lens mold, and finally the defocus bands are formed by laser engraving and resin curing.
[0025] The defocus bands are divided into 6 inner defocus bands and 2 outer defocus bands, and both are composed of defocus units 20, wherein the outer defocus bands are in a diffusion shape, that is, the interval of the defocus units 20 is larger, forming a discrete edge, which is convenient for the conversion of the edge of the visual field, and the inner inner defocus band continuously changes the tight defocus in this area to realize the conversion of the far and near visual field, and the transition is more comfortable. The refractive power of the defocus bands gradually decreases from inside to outside, and decreases by 0.25D each time, which is convenient for the transition of the visual field.
[0026] The outer surface of the lens body 10 is provided with a micro-light anti-reflection unit corresponding to the defocus unit, which is engraved by laser, used to improve the anti-reflection property of the lens, and the stray strong light can be further reflected out when it enters the surface, thereby realizing the effect of reducing reflection and increasing transmission, and the transition of the eye is more comfortable during defocus conversion.
[0027] Preferably, the defocus unit is a circular groove with a diameter of 20-200μm, which realizes the change of refractive power.
[0028] In addition, the diameter of the micro-light anti-reflection unit is smaller than that of the defocus unit, which avoids affecting the defocus amount.
[0029] Preferably, the refractive power of the innermost defocus band is 5-6D, which meets the needs of most users wearing glasses.
[0030] The depth of the micro light anti-reflection unit is 12-50 microns, which meets the anti-reflection requirement.
[0031] In summary, the full-coverage defocus area is arranged, the inner and outer defocus bands are arranged on the inner side of the lens body, defocus conversion is formed, transition of eye viewing area is facilitated, comfort is improved, in addition, the micro light anti-reflection unit corresponding to the defocus unit of the defocus band is arranged on the outer side of the lens body, light anti-reflection during focus conversion is improved, and stray strong light interference is reduced.
[0032] 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 forms 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 by the above teachings or related technical or knowledge within the scope of the utility model concept described herein. The modification and change made by 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 full-coverage multi-focal lens, characterized in that, Comprising: a lens body having a central correction circle, a full-coverage defocus zone located at the periphery of the central correction circle, and a low-light zone located at the periphery of the full-coverage defocus zone; wherein the full-coverage defocus zone is provided with 6 inner defocus zones and 2 outer defocus zones inside the lens body, the inner defocus zones and the outer defocus zones are both composed of a plurality of defocus units, the interval of the defocus units of the inner defocus zones is smaller than that of the outer defocus zones, the refractive power of the defocus zones gradually decreases from inside to outside, and decreases by 0.25D each time; the outer side of the full-coverage defocus zone is provided with micro-light anti-reflection units engraved by laser, and the micro-light anti-reflection units are concentric with the defocus units.
2. The full-coverage multi-focal defocus lens of claim 1, wherein, wherein the defocus units are provided as circular grooves with a diameter of 20-200μm.
3. The full-coverage multipoint-vision-lens of claim 1, wherein, wherein the diameter of the micro-light anti-reflection units is smaller than that of the defocus units.
4. The full-coverage multipoint-vision-lens of claim 1, wherein, wherein the refractive power of the innermost side of the defocus zones is 5-6D.
5. The full-coverage multi-focal through-focus lens of claim 1, wherein, wherein the depth of the micro-light anti-reflection units is 12-50μm.