A peripheral defocus lens

Abstract

This utility model discloses a defocus lens with peripheral defocus, comprising a lens body, an anti-reflective film on the outer wall of the lens body, an intermediate layer installed in the middle of the anti-reflective film, low-refractive-index layers symmetrically connected on both sides of the intermediate layer, a high-refractive-index layer on one side of each of the two low-refractive-index layers, and a hardening layer on the side of the outer high-refractive-index layer. The beneficial effects are: through the design of the intermediate layer, high-refractive-index layer, and low-refractive-index layer of the anti-reflective film, when the lens is working, the design of the inner high-refractive-index layer optimizes blue and violet light, the design of the inner low-refractive-index layer optimizes green light, and the outer low-refractive-index layer optimizes red light, achieving the cancellation of short-wave, medium-wave, and long-wavelength light by the lens, avoiding the occurrence of reflection spots caused by fiber refraction, and effectively ensuring the imaging effect of the defocus lens.

Description

Technical Field

[0001] This utility model relates to the field of defocus lens technology, specifically to a defocus lens that defocuses the outer periphery of the lens. Background Technology

[0002] Defocus lenses, also known as peripheral defocus glasses, are lenses divided into two areas: a central optical zone with a single-vision design and a peripheral functional zone with concentrically arranged ring microcylinders. The image at the central visual field is projected onto the retina, while its periphery is projected onto or in front of the retina. This defocus image controls the growth of the eye axis and slows down the progression of myopia.

[0003] Existing defocused lenses, which use special optical designs to shift the focus of the image onto or in front of the retina, correct both central and peripheral visual acuity. While these methods can alleviate visual impairment, defocused lenses can flip over when used at night or under artificial light. Ordinary resin lenses may also exhibit glare under reflected light, causing visual interference and blurry images. Consequently, these lenses are less effective at night. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The technical problem to be solved by this utility model is to provide a defocused lens that can prevent reflections by defocusing the outer edge of the lens, in light of the current state of the technology.

[0006] (II) Technical Solution

[0007] This utility model is achieved through the following technical solution: This utility model proposes a defocused lens with peripheral defocus, including a lens body, an anti-reflective film on the outer wall of the lens body, an intermediate layer installed in the middle of the anti-reflective film, low refractive index layers symmetrically connected on both sides of the intermediate layer, a high refractive index layer provided on one side of each of the two low refractive index layers, a hardening layer provided on the outer side of the high refractive index layer, an anti-fingerprint film provided on the outer side of the hardening layer, and a clear vision zone provided in the middle of the lens body.

[0008] Furthermore, a defocus zone is provided outside the clear vision zone, and a fog / sand zone is provided outside the defocus zone.

[0009] Furthermore, two defocus rings are symmetrically installed on both sides of the fog and sand area, and a second defocus ring is arranged on the outer side of the first defocus ring. Both the first defocus ring and the second defocus ring are semi-circular arc structures.

[0010] Furthermore, an optical correction area is provided at the lower end of the clear vision area within the foggy area, and anti-blue light factors are provided within the lens body.

[0011] Furthermore, the anti-reflective film is bonded to the lens body, and the intermediate layer is bonded to the anti-reflective film.

[0012] Furthermore, both the low-refractive-index layer and the high-refractive-index layer are divided into inner and outer parts.

[0013] Furthermore, the hardening layer is bonded to the anti-reflective film, and the anti-fingerprint film is bonded to the hardening layer.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] By designing the intermediate layer, high refractive index layer, and low refractive index layer of the anti-reflective coating, the high refractive index layer on the inner side optimizes blue and violet light, while the low refractive index layer on the inner side optimizes green light. Combined with the optimization of red light by the low refractive index layer on the outer side, the lens achieves the cancellation of short-wave, medium-wave, and long-wave light, avoiding the occurrence of reflection spots caused by fiber refraction, and effectively ensuring the imaging effect of the defocused lens. Attached Figure Description

[0017] Figure 1 This is a front view of a defocused lens with peripheral defocusing as described in this utility model;

[0018] Figure 2 This is a cross-sectional view of the anti-reflective film in a defocused lens, which is defocused on the periphery of the lens, as described in this utility model.

[0019] The annotations in the attached figures are explained as follows:

[0020] 1. Lens body; 2. Clear vision zone; 3. Defocus ring 2; 4. Optical correction zone; 5. Defocus zone; 6. Blue light blocking factor; 7. Defocus ring 1; 8. Fogging zone; 9. Intermediate layer; 10. Anti-fingerprint film; 11. Hardening layer; 12. Low refractive index layer; 13. High refractive index layer; 14. Anti-reflective film. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] like Figures 1-2As shown, this embodiment of a defocused lens with peripheral defocus includes a lens body 1. An anti-reflective film 14 is provided on the outer wall of the lens body 1. An intermediate layer 9 is installed in the middle of the anti-reflective film 14. Low refractive index layers 12 are symmetrically connected on both sides of the intermediate layer 9. A high refractive index layer 13 is provided on one side of each of the two low refractive index layers 12. Through the design of the intermediate layer 9, the high refractive index layer 13, and the low refractive index layer 12 of the anti-reflective film 14, when the lens is working, the design of the inner high refractive index layer 13 can optimize blue and violet light, and the design of the inner low refractive index layer 12... It can optimize green light and, together with the optimization of red light by the outer low refractive index layer 12, achieve the cancellation of short-wave, medium-wave and long-wave light by the lens, avoid the occurrence of reflection spots caused by fiber refraction, and effectively ensure the imaging effect of the defocus lens. A hardening layer 11 is provided on one side of the outer high refractive index layer 13, and an anti-fingerprint film 10 is provided on the outside of the hardening layer 11. The design of the anti-fingerprint film 10 can form a protective film on the surface of the lens body 1, reduce the adhesion of fingerprints, oil stains and other stains, thereby protecting the lens body 1 from damage. A clear vision zone 2 is provided in the middle of the lens body 1.

[0023] like Figures 1-2 As shown in this embodiment, a defocus area 5 is arranged outside the clear vision area 2, and a fog area 8 is arranged outside the defocus area 5. Through the design of the defocus area 5, the first defocus ring 7, and the second defocus ring 3, a myopic defocus effect can be formed at the front and sides of the retina. With the design of the fog area 8, the contrast and brightness of the retinal image can be reduced, which has the function of stabilizing the eye position and preventing strabismus.

[0024] like Figures 1-2 As shown in this embodiment, two defocusing rings 7 are symmetrically installed on both sides of the fog and sand area 8, and a defocusing ring 3 is arranged on the outer side of the defocusing ring 7. Both the defocusing ring 7 and the defocusing ring 3 are semi-circular arc structures.

[0025] like Figures 1-2 As shown in this embodiment, an optical correction area 4 is arranged directly below the clear vision area 2 within the fog area 8. An anti-blue light factor 6 is arranged inside the lens body 1. The anti-blue light factor 6 absorbs blue light and reduces the transmittance of blue light, thereby achieving the function of blocking blue light. The optical correction area 4, in conjunction with the design of the clear vision area 2, can provide the user with correct optical correction to compensate for refractive errors of the eye, such as myopia, hyperopia, or astigmatism, so that light can be correctly focused on the retina, thereby obtaining clear vision.

[0026] like Figures 1-2 As shown, in this embodiment, the anti-reflective film 14 is bonded to the lens body 1, and the intermediate layer 9 is bonded to the anti-reflective film 14. The intermediate layer 9 is a transition layer that can balance the stress of the inner high refractive index layer 13 and the low refractive index layer 12, ensuring the adhesion effect of the anti-reflective film 14 on the surface of the lens body 1.

[0027] like Figures 1-2 As shown, in this embodiment, both the low refractive index layer 12 and the high refractive index layer 13 are divided into inner and outer parts. The inner high refractive index layer 13 can cancel the reflection in the air, and the two low refractive index layers can cancel the reflection in each layer. The outer high refractive index layer 13 can form a final protection for the outer side of the lens body 1 and can help cancel the remaining reflection, which can effectively reduce the reflection of the lens when used at night.

[0028] like Figures 1-2 As shown, in this embodiment, the hardening layer 11 is bonded to the anti-reflective film 14, and the anti-fingerprint film 10 is bonded to the hardening layer 11. The design of the hardening layer 11 in conjunction with the anti-fingerprint film 10 makes it difficult for water stains and oil stains in fingerprints to form obvious marks on the lens surface, thereby reducing the adhesion of fingerprints on the lens surface and maintaining the cleanliness and clarity of the lens.

[0029] The specific implementation process of this embodiment is as follows: When using the lens, the design of the defocus area 5, defocus ring 1 7, and defocus ring 2 3 can form a myopic defocus effect at the front and sides of the retina. Combined with the design of the fogging area 8, it can reduce the contrast and brightness of the retinal image, and has the function of stabilizing the eye position and preventing strabismus. When using the lens at night, the design of the inner high refractive index layer 13 can optimize the short wavelength of blue and violet light, and the design of the inner low refractive index layer 12 can optimize the medium wavelength of green light. Combined with the optimization of the long wavelength of red light by the outer low refractive index layer 12, the lens can cancel out short, medium and long wavelengths, avoid the occurrence of reflection spots caused by fiber refraction, and effectively ensure the imaging effect of the defocus lens. The hardening layer 11 combined with the design of the anti-fingerprint film 10 makes the lens oleophobic, which can effectively prevent oil stains from sticking to the lens surface and achieve the effect of anti-fingerprint and anti-oil stains.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily 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 is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A peripheral defocus lens of a defocus lens, characterized in that: The lens body (1) includes an anti-reflective film (14) on the outer wall of the lens body (1), an intermediate layer (9) installed in the middle of the anti-reflective film (14), low refractive index layers (12) symmetrically connected on both sides of the intermediate layer (9), a high refractive index layer (13) is provided on one side of each of the two low refractive index layers (12), a hardening layer (11) is provided on the outer side of the high refractive index layer (13), an anti-fingerprint film (10) is provided on the outer side of the hardening layer (11), and a clear vision zone (2) is provided in the middle of the lens body (1).

2. A peripheral defocus lens of claim 1, wherein: A defocus area (5) is provided outside the clear vision area (2), and a fog and sand area (8) is provided outside the defocus area (5).

3. A peripheral defocus lens of claim 2, wherein: Two defocus rings (7) are symmetrically installed on both sides of the fog and sand area (8). A defocus ring (3) is arranged on the outside of the defocus ring (7). Both the defocus ring (7) and the defocus ring (3) are semi-circular arc structures.

4. A peripheral defocus lens of claim 3, wherein: An optical correction area (4) is provided in the fog area (8) directly below the clear vision area (2), and an anti-blue light factor (6) is provided in the lens body (1).

5. The peripheral defocus lens of claim 1, wherein: The anti-reflective film (14) is bonded to the lens body (1), and the intermediate layer (9) is bonded to the anti-reflective film (14).

6. The peripheral defocus lens of claim 1, wherein: Both the low-refractive-index layer (12) and the high-refractive-index layer (13) are divided into inner and outer parts.

7. The peripheral defocus lens of claim 1, wherein: The hardening layer (11) is bonded to the anti-reflective film (14), and the anti-fingerprint film (10) is bonded to the hardening layer (11).

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