Edge-transparent combined progressive lens capable of reducing contrast ratio

Abstract

The utility model relates to an edge-transparent combined progressive lens capable of reducing contrast, the progressive lens is divided into a far-use area, a transition area and a near-use area from top to bottom, the far-use area is a contrast concave lens or plano lens, the near-use area is a contrast edge-lens assembly, the contrast edge-lens assembly is a prism and a lens (convex lens, concave lens, convex lens, concave lens, convex lens, concave lens, convex lens, concave lens, convex lens, concave lens, convex lens, concave lens, convex lens, concave lens, convex lens, concave lens, convex lens, concave lens, convex lens, concave lens and convex and the transition area is a transition belt used for transition from the far-use area to the near-use area, and is formed by combining the far-use area, the near-use area, the concave lens or the plano lens. According to the technical scheme, through the semitransparent light scattering area distributed on the inner surface of the progressive lens, the laser micro-carving particle points in the semitransparent light scattering area are used for scattering light, reducing light signal difference and reducing retina contrast, and therefore myopia growth caused by high contrast is reduced.

Description

Technical Field

[0001] This utility model relates to the field of eyewear technology, and in particular to a prism progressive lens with reduced contrast. Background Technology

[0002] In 2018, eight departments, including the Ministry of Education and the National Health Commission, issued the "Comprehensive Prevention and Control Plan for Myopia in Children and Adolescents," which proposed that by 2023, efforts should be made to reduce the overall myopia rate among children and adolescents nationwide by more than 0.5 percentage points annually compared to 2018, and by more than 1 percentage point annually in provinces with high myopia rates. By 2030, the plan aims to achieve a significant decrease in the incidence of new myopia cases among children and adolescents, a significant improvement in overall vision health, with the myopia rate among 6-year-old children controlled at around 3%, the myopia rate among primary school students reduced to below 38%, the myopia rate among junior high school students reduced to below 60%, and the myopia rate among senior high school students reduced to below 70%.

[0003] According to the monitoring results of the National Health Commission in 2019, the overall myopia rate among children and adolescents nationwide was 53.6% in 2018. Among them, the rate was 36.0% for primary school students, 71.6% for junior high school students, and 81.0% for senior high school students. At the same time, the problem of myopia is particularly prominent among younger children.

[0004] The White Paper on Myopia Management (2019) defines rapid myopia progression, with a progression of ≥0.75D / year, as progressive myopia. Moreover, the proportion of progressive myopia among children and adolescents in my country is very high. Protecting the vision health of children and adolescents and preventing the occurrence and development of myopia is now urgent!

[0005] Based on the characteristics of children and adolescents' learning and life, the existing monofocal lenses can only help children and adolescents with myopia see the blackboard clearly at a distance. When looking at books at close range, because the edge power of the monofocal lens is higher than the center power, it will stimulate the eyes to increase the accommodation and convergence of near vision, thus leading to the continuous deepening of myopia when reading and writing for a long time!

[0006] Existing single-prism progressive lenses or monofocal lenses can only reduce the amount of accommodation the eye needs when looking at near and far distances, but cannot reduce the pressure exerted by the extraocular muscles on the eyeball wall when looking at near objects, and therefore cannot effectively alleviate the progression of myopia.

[0007] Existing progressive multifocal lenses can only reduce the accommodative force required for children and adolescents to switch from looking at a distant blackboard to looking at a near book by setting the lens's ADD value. They cannot reduce the pressure exerted by the extraocular muscles on the eyeball wall when looking at near objects. In addition, most children and adolescents with myopia also have exophoria, making existing progressive multifocal lenses unsuitable. Therefore, a single progressive multifocal lens is not very effective in controlling progressive myopia.

[0008] Meanwhile, while existing single prism + lens combination lenses can solve the problem of reducing accommodation and pressure of extraocular muscles on the eyeball wall when looking at near objects, they can only be used for near vision. These lenses cannot clearly see the words on the blackboard and need to be combined with a pair of glasses for distance vision. Most children and adolescents with myopia are students, so wearing glasses during life and study is very inconvenient and affects the wearing effect. Utility Model Content

[0009] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0010] Therefore, the purpose of this utility model is to provide a prism-guided progressive lens with reduced contrast, which can reduce the pressure of the extraocular muscles on the eyeball wall and relieve the tension of the ciliary muscle when looking at close objects.

[0011] To achieve the above objectives, the present invention provides a progressive lens with a prism lens assembly that reduces contrast. The progressive lens is divided into a distance vision zone, a transition zone, and a near vision zone from top to bottom. The distance vision zone is a concave lens or a plano lens, the near vision zone is a prism lens assembly that includes a prism and a lens, and the transition zone is a transition band that allows the lens to transition from the distance vision zone to the near vision zone.

[0012] In the above technical solution, preferably, the lens is at least one of a convex lens, a concave lens, and a planar lens.

[0013] In the above technical solution, preferably, the prism power of the contrast prism lens assembly is 2.25-2.75.

[0014] In the above technical solution, preferably, the lens power of the contrast prism lens assembly is the power of the far-field area minus 100, 150, or 200.

[0015] In any of the above technical solutions, preferably, the transition zone is divided into an upper end face, a lower end face, a left end face, and a right end face, wherein at least one of the upper end face, lower end face, left end face, and right end face is an arc-shaped surface, the apex of the arc-shaped surface bends inward into the transition zone, the upper end face corresponds to the far-use area, and the lower end face corresponds to the near-use area.

[0016] In any of the above technical solutions, preferably, the refractive index of the progressive lens is 1.499-1.74.

[0017] In any of the above technical solutions, preferably, the inner surface of the progressive lens is constructed with a semi-transparent light scattering region, which is a circular area composed of semi-transparent laser micro-engraved particles.

[0018] In the above technical solution, preferably, at least a portion of the inner surfaces of the far-use area, the transition area and the near-use area are constructed with the translucent laser micro-engraved particles.

[0019] In the above technical solution, preferably, the progressive lens further includes posture correction zones located on both sides, the posture correction zones corresponding to the astigmatic cylinders on both sides of the transition zone.

[0020] In the above technical solution, preferably, the inner surface of the contrast prism lens assembly is integral with the inner surface of the progressive lens, and the outer surface of the contrast prism lens assembly, the outer surface of the progressive lens, the outer surface of the transition zone, and the outer surface of the cylindrical lens are integral.

[0021] Compared with the prior art, the advantages of the prism-transparent progressive lens with reduced contrast provided by this utility model are as follows: through the semi-transparent light scattering area distributed on the inner surface of the progressive lens, the laser micro-carved particles in the semi-transparent light scattering area are used to scatter light, reduce the difference in light signals, reduce the contrast of the retina, thereby reducing the myopia growth caused by high contrast, thereby controlling the elongation of the eye axis and alleviating the deepening of myopia.

[0022] In this progressive lens structure, when light passes through the contrast prism assembly, the refraction of light emitted from nearby objects is changed into relatively parallel light rays through the prisms. This allows the light to pass through the entire refractive system of the eyeball and project the focal point onto the central area of ​​the retina (macula), thereby reducing the pressure of the extraocular muscles on the eyeball wall and compensating for the convergence ability. At the same time, the lenses in the prism assembly can relieve the tension of the ciliary muscle when viewing near objects and prevent accommodation lag. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This diagram shows the overall structure of the progressive lens according to an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the partitions of the progressive lens according to an embodiment of the present invention is shown;

[0026] Figure 3 This is a cross-sectional view of the progressive lens involved in the embodiment of this utility model;

[0027] in, Figures 1 to 3 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0028] 1. Progressive lens; 2. Near vision zone; 3. Distance vision zone; 4. Transition zone; 41. Upper surface; 42. Lower surface; 43. Left surface; 44. Right surface; 5. Semi-transparent light scattering zone; 6. Posture correction zone; 7. Cylindrical lens. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0031] like Figures 1 to 3 As shown, according to one embodiment of the present invention, a progressive lens with reduced contrast using a prism combination is provided. The progressive lens 1 is divided into a distance viewing zone 3, a transition zone 4, and a near viewing zone 2 from top to bottom. The distance viewing zone 3 is a concave lens or a plano lens. The near viewing zone 2 is a prism lens assembly, which includes a prism and a lens. The prism is a triangular prism, and the lens is at least one of a convex lens, a concave lens, and a plano lens. The transition zone 4 is a transition band from the distance viewing zone 3 to the near viewing zone 2.

[0032] Among them, the concave lens is a concave lens with low contrast, and the prism lens assembly is a prism lens assembly with low contrast.

[0033] In this embodiment, the distance vision area (i.e., distance viewing area 3) of the progressive lens 1 uses a low-contrast concave lens or a plano lens to correct myopia and see distant objects clearly; the near vision area 2 uses a prism lens assembly. When light passes through the prism lens assembly, the light emitted from nearby objects is refracted by the prisms and changed into relatively parallel light rays. Through the refractive system of the entire eyeball, the focal point is projected onto the central area of ​​the retina (macula), thereby reducing the pressure of the extraocular muscles on the eyeball wall and compensating for the convergence ability. At the same time, the lens in the prism lens assembly can relieve the tension of the ciliary muscle when viewing near objects and prevent the occurrence of accommodation lag.

[0034] In the above embodiments, preferably, the prism power of the contrast prism lens assembly is 2.25-2.75.

[0035] In the above embodiments, preferably, the lens power of the contrast prism lens assembly is the power of the concave lens minus 100, 150, or 200.

[0036] In any of the above embodiments, preferably, the transition zone is divided into an upper end face 41, a lower end face 42, a left end face 43, and a right end face 44, wherein at least one of the upper end face 41, the lower end face 42, the left end face 43, and the right end face 44 is an arc-shaped surface, and the apex of the arc-shaped surface bends inward into the transition zone. The upper end face 41 corresponds to the far-use area 3, and the lower end face 42 corresponds to the near-use area 2.

[0037] In any of the above embodiments, preferably, the refractive index of the progressive lens 1 is 1.499-1.74.

[0038] In any of the above embodiments, preferably, the inner surface of the progressive lens 1 is constructed with a semi-transparent light scattering region 5, which is a circular area composed of semi-transparent laser micro-engraved particles distributed in a star-like pattern.

[0039] In this embodiment, the semi-transparent light scattering area 5 distributed on the inner surface of the progressive lens 1 is used to scatter light through the laser micro-carved particles in the semi-transparent light scattering area 5, thereby reducing the difference in light signals and reducing the contrast of the retina, thereby reducing the myopia growth caused by high contrast, thus controlling the elongation of the eye axis and alleviating the increase of myopia.

[0040] In the above embodiments, preferably, at least a portion of the inner surfaces of the far-use area 3, the transition area 4, and the near-use area 2 are constructed with the translucent laser-engraved particles.

[0041] In the above embodiment, preferably, the progressive lens 1 further includes posture correction areas 6 located on both sides, wherein the posture correction areas 6 are cylindrical lenses corresponding to the non-transparent laser micro-carved particle points, and the posture correction areas 6 located on both sides correspond to the left end face 43 and the right end face 44, respectively.

[0042] In this embodiment, a cylindrical lens 7 is constructed in the posture correction zone 6 of the progressive lens 1 to correct the sitting posture when reading and writing, and to maintain the correct reading head position.

[0043] It should be noted that the posture correction zone 6 of the lens refers to the area on both sides of the lens used to correct posture. Its main function is to help the wearer maintain the correct sitting posture and line of sight, thereby preventing hunchback and other poor posture problems.

[0044] Specifically, the posture correction zones 6 are typically located on both sides of the lens and are designed to guide the wearer's gaze forward, helping them maintain correct posture and line of sight. This design can effectively correct strabismus and help wearers maintain proper posture, preventing poor posture problems such as hunchback.

[0045] In the above embodiments, preferably, the inner surface of the contrast prism lens assembly is integral with the inner surface of the progressive lens 1, and the outer surface of the contrast prism lens assembly, the outer surface of the progressive lens 1, the outer surface of the transition zone, and the outer surface of the cylindrical lens 7 are integral.

[0046] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A reduced-contrast lenticular combination progressive lens, characterized in that, The progressive lens (1) is divided into a distance zone (3), a transition zone (4) and a near zone (2) from top to bottom, the distance zone (3) is a concave lens or a flat lens, the near zone (2) is a contrast prism lens combination, the contrast prism lens combination comprises a prism and a lens, and the transition zone (4) is a transition zone for transition from the distance zone (3) to the near zone (2).

2. The reduced-contrast prismatic combiner progressive lens of claim 1, wherein: The lens is at least one of a convex lens, a concave lens and a flat lens.

3. The reduced-contrast prismatic-fresnel hybrid progressive lens of claim 1, wherein: The prism degree of the contrast prism lens combination is 2.25-2.

75.

4. The reduced-contrast prismatic combiner progressive lens of claim 1, wherein: The lens degree of the contrast prism lens combination is the distance zone degree minus 100 or minus 150 or minus 200.

5. The reduced-contrast prismatic combinatorial progressive lens of any one of claims 1 to 4, wherein: The transition zone is divided into an upper end surface (41), a lower end surface (42), a left end surface (43) and a right end surface (44), at least one of the upper end surface (41), the lower end surface (42), the left end surface (43) and the right end surface (44) is an arc surface, the arc top of the arc surface is bent inwardly, the upper end surface (41) corresponds to the distance zone (3), and the lower end surface (42) corresponds to the near zone (2).

6. The reduced-contrast prismatic combinatorial progressive lens of any one of claims 1 to 4, wherein: The refractive index of the progressive lens (1) is 1.499-1.

74.

7. A reduced-contrast prismatic combiner progressive lens according to any one of claims 1 to 4, characterized in that: The inner surface of the progressive lens (1) is provided with a translucent light scattering area (5), and the translucent light scattering area (5) is a circular area composed of translucent laser micro-sculpture particles.

8. The reduced-contrast prismatic-fresnel hybrid progressive lens of claim 7, wherein: The inner surface of at least part of the distance zone (3), the transition zone (4) and the near zone (2) is provided with the translucent laser micro-sculpture particles.

9. The reduced-contrast prismatic-fresnel hybrid progressive lens of claim 7, wherein: The progressive lens (1) further comprises posture correction zones (6) on both sides, and the posture correction zones (6) correspond to transition zone sides astigmatic cylinders.

10. The reduced-contrast prismatic-fresnel hybrid progressive lens of claim 9, wherein: The inner surface of the contrast prism lens combination and the inner surface of the progressive lens (1) are integrated, and the outer surface of the contrast prism lens combination, the outer surface of the progressive lens (1), the outer surface of the transition zone and the outer surface of the cylinder (7) are integrated.

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