WO2023240908A1 - 非对称离焦镜片及应用其的眼镜 - Google Patents

非对称离焦镜片及应用其的眼镜 Download PDF

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Publication number
WO2023240908A1
WO2023240908A1 PCT/CN2022/130334 CN2022130334W WO2023240908A1 WO 2023240908 A1 WO2023240908 A1 WO 2023240908A1 CN 2022130334 W CN2022130334 W CN 2022130334W WO 2023240908 A1 WO2023240908 A1 WO 2023240908A1
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area
lens
defocus
lens body
asymmetric
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PCT/CN2022/130334
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English (en)
French (fr)
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陈冠南
周瑜
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阿尔玻科技有限公司
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Publication of WO2023240908A1 publication Critical patent/WO2023240908A1/zh

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    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00Optical parts
    • G02C7/02Lenses; Lens systems ; Methods of designing lenses
    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00Optical parts
    • G02C7/02Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive

Definitions

  • the present disclosure relates generally to the field of lens optics technology, and more specifically to asymmetric defocus lenses and glasses using the same.
  • Myopia means that when the eye is in a relaxed state, the parallel light rays are refracted by the eye's refractive system and the focus falls in front of the retina, that is, the parallel light rays are imaged in front of the retina.
  • the symptoms of myopia are: reduced distance vision and normal near vision. It is commonly said that distant objects cannot be seen clearly but close objects can be seen clearly.
  • the lenses on the glasses can make parallel light rays image on the retina.
  • the lenses currently on the market can only enable people to see distant objects clearly, and cannot correct myopia based on the asymmetry of the human eye and the physiological mechanism of adjustment and convergence of the human eye in visual distance; for teenagers, Eyes are used more frequently during class and homework, and the axial length of teenagers' eyes (the distance between cornea-lens-vitreous-retina is regarded as a central axis of the optical system in physics, the so-called "eye axis") is still growing and developing.
  • the critical period if they wear the above-mentioned lenses, it will not shorten their eye axis and cannot correct their myopia. When their eye axis is fully developed, it will be difficult to correct their myopia.
  • the present disclosure relates to an asymmetric defocus lens, which includes a lens body, a side of which light enters is provided with a plurality of annularly distributed microlenses, and the plurality of microlenses jointly form a defocus area;
  • the defocus area includes a far vision area, a near vision area, a nasal area and a temporal area; wherein, the far vision area is distributed above the center of the light entrance surface of the lens body, and the near vision area is distributed above the center of the lens body.
  • the nasal side area is distributed on the side of the lens body's light entrance surface close to the nose
  • the temporal side area is distributed on the side of the lens body's light entrance surface away from the nose.
  • the microlens has a bottom surface connected to the light entrance surface of the lens body and an arc surface protruding from the light entrance surface of the lens body.
  • the inner diameter r1 of the bottom surface is 800 ⁇ m-1200 ⁇ m.
  • the radius r2 of the arc surface is 1.5 ⁇ 10 5 ⁇ m-2.5 ⁇ 10 5 ⁇ m.
  • the distance between two adjacent microlenses in a row of microlenses is 1.5 to 2.5 times the inner diameter r1 of the bottom surface.
  • the lens body has an front view zone distributed at the center of the out-of-focus zone.
  • the temporal area is a sector-shaped area of 150°-225° in the counterclockwise direction of the horizontal diameter of the front view area.
  • the lens body includes a PC lens.
  • the microlens is made of PMMA, PET or PC.
  • the present disclosure relates to eyeglasses, which include a frame and at least one asymmetric defocus lens according to the present disclosure, wherein the asymmetric defocus lens is provided on the frame.
  • Figure 1 is a schematic diagram of the defocus area distribution of an asymmetric defocus lens according to an embodiment of the present disclosure
  • Figure 3 is a schematic structural diagram of a microlens
  • Figure 4 is a schematic diagram of the eyeball structure
  • Figure 5 is a schematic diagram of the defocus effect of glasses of the present disclosure.
  • Lens body 11. Light entrance surface; 12. Light exit surface; 2. Microlens; 21. Bottom surface; 22. Arc surface; 3. Defocus area; 31. Far vision area; 32. Myopia area; 33. Nose Lateral area; 34. Temporal area; 4. Emmetropia area; 41. Horizontal diameter line; 5. Eyeball structure; 51. Retina; 52. Lens; 53. Cornea; 54. Axis of the eye.
  • embodiments of the present disclosure provide an asymmetric defocus lens in a first aspect, which includes a lens body 1 , and a light-incoming side of the lens body 1 is provided with a plurality of annularly distributed lenses.
  • the microlens 2, multiple microlenses 2 together form a defocus area 3;
  • the defocus area 3 includes a far vision area 31, a near vision area 32, a nasal area 33 and a temporal area 34; wherein the far vision area 31 is distributed on the lens body 1 Above the center of the light entrance surface 11, the myopia area 32 is distributed below the center of the light entrance surface 11 of the lens body 1, the nasal area 33 is distributed on the side of the light entrance surface 11 of the lens body 1 close to the nose, and the temporal area 34 is distributed on the lens The light entrance surface 11 of the main body 1 is on the side away from the nose.
  • a plurality of annularly distributed microlenses 2 are provided on one side of the lens body 1 where light enters.
  • Each microlens 2 can change the refraction direction of light. Therefore, multiple microlenses 2 Together, they form the defocus area 3, which can focus the parallel light rays that are about to enter the eye lens 52 in front of the retina 51, so that these light rays are discrete when they reach the retina 51 and cannot be imaged on or behind the retina 51. In this way, To suppress the excessive growth of the axial length of the eye 54 to correct myopia.
  • the eyeball is not a spherical structure, but an asymmetrical ellipsoidal structure.
  • the horizontal radial refractive power of the lens 52 and the vertical radial refractive power of the incident light are different.
  • the asymmetric defocus lens sets the defocus amount in each direction of the defocus area 3 to be different.
  • the defocus area 3 includes a far vision area 31, a near vision area 32, a nasal area 33 and a temporal area 34.
  • the far vision area 31 is distributed above the center of the light entrance surface 11 of the lens body 1, and the near vision area 32 is distributed in the center of the lens body 1.
  • the nasal side area 33 is distributed on the side of the lens body 1 light entrance surface 11 close to the nose, and the temporal side area 34 is distributed on the side of the lens body 1 light entrance surface 11 away from the nose. In this way, this is asymmetrical.
  • Defocus lenses can produce the most appropriate defocus effect according to the specific eyeball structure 5 to achieve the best myopia correction effect.
  • the eyes will automatically adjust, which will drive the eye axis 54 to shorten, so that the retina 51 moves forward (the eye axis 54 is the distance between the cornea 53 - lens 52 - vitreous body - retina 51 , the axial length of the eye 54 is shortened, and the retina 51 is closer to the cornea 53, which can be understood as the retina 51 moving forward). In this way, excessive growth of the axial length of the eye 54 can be suppressed, and the axial length of the eye 54 can also be shortened to correct myopia.
  • the microlens 2 has a bottom surface 21 connected to the light entrance surface 11 of the lens body 1 and an arc surface 22 protruding from the light entrance surface 11 of the lens body 1; the inner diameter r1 of the bottom surface 21 is 800 ⁇ m-1200 ⁇ m; The height h of the microlens 2 protruding from the light entrance surface 11 of the lens body 1 is 0.5 ⁇ m-1.5 ⁇ m; the radius r2 of the arc surface 22 is 1.5 ⁇ 10 5 ⁇ m-2.5 ⁇ 10 5 ⁇ m.
  • Parallel light rays will be refracted when entering the arc surface 22 of the microlens 2, and then pass through the microlens 2 and the lens body 1 successively, and emerge from the light exit surface 12 of the lens body 1.
  • the lens 52 When entering the lens 52, the light rays The incident angle has changed. After being refracted by the lens 52, these light rays will be focused in front of the retina 51. Therefore, these light rays are discrete when they reach the retina 51, and cannot be imaged on the retina 51 or behind the retina 51, and will not be driven.
  • the axial length of the eye 54 is excessively expanded backward. For teenagers, the axial length of the eye 54 is a critical period of development. This asymmetric defocus lens can inhibit the excessive expansion of the axial length of the eye 54 backward, thereby correcting myopia in teenagers.
  • the inner diameter r1 of the bottom surface 21 is 800 ⁇ m-1200 ⁇ m; the height h of the microlens 2 protruding from the light entrance surface 11 of the lens body 1 is 0.5 ⁇ m-1.5 ⁇ m; the radius r2 of the arc surface 22 is 1.5 ⁇ 10 5 ⁇ m-2.5 ⁇ 10 5 ⁇ m, therefore, the defocus amount of these microlenses 2 is between +2.5D and +3.0D, or higher than +3.0D. Therefore, the present disclosure can set the defocus amount of the defocus area 3 accordingly according to the patient's myopia degree.
  • the defocus amount of the far vision area 31 , the near vision area 32 , the nasal area 33 and the temporal area 34 of the present disclosure can be set to +2.5D to +3.0D to adapt to the myopia degree of most patients.
  • the present disclosure can also be based on the myopia degree of a small number of patients. For example, when the myopia degree of adolescent patients is 600°, the present disclosure can set the defocus amount of the far vision area 31, the near vision area 32, the nasal area 33 or the temporal area 34 to + 6.0D.
  • the fundus of the eye is approximately a sphere, and the macular position of the retina 51 belongs to the imaging area, so the distance from the periphery to the front apex of the cornea 53 gradually changes. Therefore, in the present disclosure, the plurality of microlenses 2 take the center of the light entrance surface 11 of the lens body 1 as the center of the circle, and are distributed in multiple rows of annular shapes from the center outward. Based on the motion trajectory of the eyeball, this trajectory rotates from the center to the periphery. Therefore, these microlenses 2 spread from the center of the lens body 1 to the periphery to ensure that everything is visible within the effective field of view of the glasses. Complete defocus effect.
  • the lens body 1 has a front view area 4, which is distributed at the center of the defocus area 3.
  • the front view area 4 is used to correct vision.
  • the light passing through the front view area 4 will be clearly imaged on the retina 51, so that the The patient can see clearly so that the patient can perform daily activities.
  • This disclosure distributes the front view area 4 at the center of the defocus area 3, which is based on the human eye's viewing habits.
  • people are used to looking at objects directly, that is, the light reflected by the object directly enters the lens 52 and is refracted by the lens 52. Then it is focused and imaged on the retina 51; therefore, when the patient wears this lens, the front view area 4 can allow the light reflected by the object to directly enter the lens 52, so that people can see the object clearly, and the defocus area 3 can allow the light reflected by the object to enter the lens 52 obliquely.
  • the light is defocused so that myopia can be corrected.
  • correcting vision means refracting the light through the lens so that the light can be clearly imaged on the patient's retina 51, but when the lens is removed, the patient still cannot see the object clearly; correcting myopia means making the light that is about to enter the eye lens 52
  • the parallel light rays are focused in front of the retina 51, so that these light rays are discrete when they reach the retina 51 and cannot be imaged on the retina 51 or behind the retina 51, thereby inhibiting the expansion of the eye axis 54.
  • it can also drive the eye axis 54 to shorten, so as to This allows the out-of-focus light to focus on the retina 51, correcting myopia.
  • the patient's myopia will be cured, and the patient can see clearly without wearing glasses.
  • the far vision area 31 is a sector area ⁇ 1 of 30° to 150° counterclockwise from the horizontal diameter 41 of the front view area 4;
  • the temporal area 34 It is a fan-shaped area ⁇ 4 with a counterclockwise direction of 150°-225° from the horizontal diameter line 41 of the front view zone 4;
  • the near vision zone 32 is a fan-shaped area ⁇ 2 with a counterclockwise direction of 225°-315° from the horizontal diameter line 41 of the front view zone 4;
  • the nasal side area 33 is a fan-shaped area ⁇ 3 extending from 30° in the counterclockwise direction to 45° in the clockwise direction of the horizontal radial line 41 of the front viewing area 4; wherein, the horizontal radial line 41 of the front viewing area 4 passes through the center of the light entrance surface 11 of the lens body 1.
  • the defocus area 3 is divided into a far vision area 31, a temporal area 34, a near vision area 32 and a nasal area 33, so that the defocus area 3 can
  • the focal area 3 can produce inconsistent defocus amounts in various directions. In this way, the defocus effect can be more effectively achieved and visual fatigue will not be caused by over-adjustment, thereby effectively inhibiting the growth of the eye axis 54 and correcting myopia.
  • the microlens 2 and the lens body 1 have an integrated structure, or the microlens 2 is mounted on the lens body 1 by pressing.
  • the asymmetric defocus lens can be directly injection molded by injection molding. Molding, in order to shorten the construction period, you can also use the pressing method to press the microlens 2 onto the lens body 1.
  • the microlens 2 can be processed at the same time as the lens body 1, so that the construction period can also be shortened.
  • the lens body 1 includes a PC lens, which is also known as a space lens or a cosmic lens and has the advantages of strong impact resistance and light weight.
  • the present disclosure also provides glasses, which include a frame and at least one asymmetric defocus lens according to the present disclosure; the asymmetric defocus lens is provided on the frame.
  • spatially relative terms may be used herein for ease of explanation, such as “below,” “below,” “below,” “above,” “above,” etc., to describe the relative position of one element or feature to other elements or features. relationship shown. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation illustrated in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)

Abstract

一种非对称离焦镜片及应用其的眼镜,非对称离焦镜片包括镜片本体(1),镜片本体(1)进光的一侧面设有多个呈环状分布的微透镜(2),多个微透镜(2)共同形成离焦区(3);离焦区(3)包括远视区(31)、近视区(32)、鼻侧区(33)和颞侧区(34);其中,远视区(31)分布于镜片本体(1)进光面(11)中心的上方,近视区(32)分布于镜片本体(1)进光面(11)中心的下方,鼻侧区(33)分布于镜片本体(1)进光面(11)靠近鼻子的一侧,颞侧区(34)分布于镜片本体(1)进光面(11)远离鼻子的一侧。

Description

非对称离焦镜片及应用其的眼镜
相关申请的引用
本公开要求于2022年6月15日向中华人民共和国国家知识产权局提交的申请号为202221514095.5、发明名称为“非对称离焦镜片及应用其的眼镜”的中国实用新型的全部权益,并通过引用的方式将其全部内容并入本公开中。
领域
本公开大体上涉及镜片光学技术领域,更具体地涉及非对称离焦镜片及应用其的眼镜。
背景
近视,为眼在调节松弛状态下,平行光线经眼的屈光系统的折射后,焦点落在视网膜之前,即平行光线成像在视网膜前,近视眼的表现为:远视力减退、近视力正常,即通常所说的看不清远的物体、看得清近的物体。
青少年在上课、写作业或其他日常活动中,常常因用眼不健康,而引起屈光不正,且青少年用眼长时间处于屈光不正的状态中,会导致近视;近几年来,青少年因用眼不当导致近视的几率愈来愈高。
人们可以通过佩戴眼镜、以矫正视力,眼镜上的镜片可以使平行光线成像在视网膜上。
然而,目前市面上的镜片仅能使人们看清远的物体,并不能够根据人眼的非对称性以及人眼在视物远近所产生的调节和辐辏的生理机理,来矫正近视;对于青少年,上课、做作业时用眼比较频繁,且青少年的眼轴(从角膜-晶状体-玻璃体-视网膜的距离看成是物理中光学系统的一条中轴线,即所谓的“眼轴”)还处于增长发育的关键期,如若佩戴上述的镜片,并不能驱使他们的眼轴变短,不能矫正他们的近视,等到他们眼轴发育完全时,便很难对他们进行近视矫正。
概述
一方面,本公开涉及非对称离焦镜片,其包括镜片本体,所述镜片本体进光的一侧面设有多个呈环状分布的微透镜,多个所述微透镜共同形成离焦区;所述离焦区包括远视区、近视区、鼻侧区和颞侧区;其中,所述远视区分布于所述镜片本体进光面中心的上方,所述近视区分布于所述镜片本体进光面中心的下方,所述鼻侧区分布于所述镜片本体进光面靠近鼻子的一侧,所述颞侧区分布于所述镜片本体进光面远离鼻子的一侧。
在某些实施方案中,所述微透镜具有与所述镜片本体进光面连接的底面以及凸出于所述镜片本体进光面的圆弧面。
在某些实施方案中,所述底面的内径r1为800μm-1200μm。
在某些实施方案中,所述微透镜凸出于所述镜片本体进光面的高度h为0.5μm-1.5μm。
在某些实施方案中,所述圆弧面的半径r2为1.5×10 5μm-2.5×10 5μm。
在某些实施方案中,多个所述微透镜以所述镜片本体进光面的中心为圆心,且由所述中心向外、呈多排圆环状分布。
在某些实施方案中,相邻的两排所述微透镜之间的间距为所述底面的内径r1的1.5倍至2.5倍。
在某些实施方案中,一排所述微透镜中的相邻的两个所述微透镜之间的间距为所述底面的内径r1的1.5倍至2.5倍。
在某些实施方案中,所述镜片本体具有正视区,所述正视区分布于所述离焦区的中心处。
在某些实施方案中,所述远视区为所述正视区的水平径线逆时针方向30°~150°的扇形区域。
在某些实施方案中,所述颞侧区为所述正视区的水平径线逆时针方向150°-225°的扇形区域。
在某些实施方案中,所述近视区为所述正视区的水平径线逆时针方向225°-315°的扇形区域。
在某些实施方案中,所述鼻侧区为所述正视区的水平径线逆时针 方向30°至顺时针方向45°的扇形区域。
在某些实施方案中,所述正视区的水平径线过所述镜片本体进光面的中心。
在某些实施方案中,所述微透镜与所述镜片本体为一体成型结构,或者所述微透镜为采用压贴方式设置于所述镜片本体上。
在某些实施方案中,所述镜片本体包括PC镜片。
在某些实施方案中,所述微透镜的材质为PMMA、PET或者PC。
另一方面,本公开涉及眼镜,其包括镜框以及至少一个本公开所述的非对称离焦镜片,其中所述非对称离焦镜片设于所述镜框上。
在某些实施方案中,在本公开的非对称离焦镜片中,镜片本体进光的一侧面设有多个呈环状分布的微透镜,每一个微透镜均可以改变光线的折射方向,因此,多个微透镜共同形成离焦区,可以将即将要进入眼睛晶状体的平行光线在视网膜前聚焦,使得这些光线在到达视网膜时是离散的,无法在视网膜上或者视网膜后方成像,以此,实现抑制眼轴过度增长,以矫正近视;离焦区包括远视区、近视区、鼻侧区和颞侧区,这样,本非对称离焦镜片可以根据具体的眼球结构,相应地产生最为合适的离焦效果,以实现矫正近视。
在某些实施方案中,眼镜包括镜框以及至少一个本公开的非对称离焦镜片,镜框可以将非对称离焦镜片悬空固定于患者的眼睛前,以保证本非对称离焦镜片可以稳定地对光线进行离焦。
附图简要说明
为了更清楚地说明本公开的技术方案,下面将对本公开所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本公开的某些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。另外,在附图中,相同的部件使用相同的附图标记,且附图并未按照实际的比例绘制。
图1是本公开一实施例的非对称离焦镜片的离焦区分布示意图;
图2是图1的放大图;
图3是微透镜的结构示意图;
图4是眼球结构的示意图;
图5是本公开的眼镜离焦效果的示意图;
附图标记说明:
1、镜片本体;11、进光面;12、出光面;2、微透镜;21、底面;22、圆弧面;3、离焦区;31、远视区;32、近视区;33、鼻侧区;34、颞侧区;4、正视区;41、水平径线;5、眼球结构;51、视网膜;52、晶状体;53、角膜;54、眼轴。
详述
为使本公开的实施例的目的、技术方案和优点更加清楚,下面将结合本公开的实施例中的附图,对本公开的实施例中的技术方案进行清楚、完整地描述。显然,所描述的实施例是本公开的一部分实施例,而不是全部的实施例。基于本公开中的实施例,本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例,都属于本公开保护的范围。
如图1至图5中所示出,本公开的实施例在第一方面提供了非对称离焦镜片,其包括镜片本体1,镜片本体1进光的一侧面设有多个呈环状分布的微透镜2,多个微透镜2共同形成离焦区3;离焦区3包括远视区31、近视区32、鼻侧区33和颞侧区34;其中,远视区31分布于镜片本体1进光面11中心的上方,近视区32分布于镜片本体1进光面11中心的下方,鼻侧区33分布于镜片本体1进光面11靠近鼻子的一侧,颞侧区34分布于镜片本体1进光面11远离鼻子的一侧。
在本非对称离焦镜片中,镜片本体1进光的一侧面设有多个呈环状分布的微透镜2,每一个微透镜2均可以改变光线的折射方向,因此,多个微透镜2共同形成离焦区3,可以将即将要进入眼睛晶状体52的平行光线在视网膜51前聚焦,使得这些光线在到达视网膜51时是离散的,无法在视网膜51上或者视网膜51后方成像,以此,实现抑制眼轴54过度增长,以矫正近视。
一般地,眼球不是球体结构,而是一个非对称的椭球形结构,晶状体52对所射入的光线的水平径屈折力与垂直径屈折力不相同,为了与晶状体52相适配,保证落在视网膜51上的各个方位离散光线不一 致,本非对称离焦镜片设定离焦区3的各个方位的离焦量不等。离焦区3包括远视区31、近视区32、鼻侧区33和颞侧区34,其中,远视区31分布于镜片本体1进光面11中心的上方,近视区32分布于镜片本体1进光面11中心的下方,鼻侧区33分布于镜片本体1进光面11靠近鼻子的一侧,颞侧区34分布于镜片本体1进光面11远离鼻子的一侧,这样,本非对称离焦镜片便可以根据具体的眼球结构5,相应地产生最为合适的离焦效果,以实现最好的矫正近视的效果。
这里需要说明一下,物体反射光线经本非对称离焦镜片离焦之后,会先在视网膜51前聚焦,这些光线在到达视网膜51时是离散的,无法在视网膜51上或者视网膜51后方成像,这样,焦点在视网膜51前,人在视物时,眼睛便会自动调节,会驱使眼轴54缩短,以使得视网膜51朝前移动(眼轴54为角膜53-晶状体52-玻璃体-视网膜51的距离,眼轴54缩短,视网膜51距离角膜53更近,可以理解为视网膜51前移),这样,既可以抑制眼轴54过度增长,还可以缩短眼轴54,以矫正近视。
在某些实施方案中,微透镜2具有与镜片本体1进光面11连接的底面21以及凸出于镜片本体1进光面11的圆弧面22;底面21的内径r1为800μm-1200μm;微透镜2凸出于镜片本体1进光面11的高度h为0.5μm-1.5μm;圆弧面22的半径r2为1.5×10 5μm-2.5×10 5μm。
平行光线在进入微透镜2的圆弧面22时会被折射,之后,先后经过微透镜2、镜片本体1,从镜片本体1出光侧的一面即出光面12出射,在进入晶状体52时,光线的入射角俨然发生了改变,这些光线经晶状体52折射之后,会在视网膜51前聚焦,从而,这些光线在到达视网膜51时是离散的,无法在视网膜51上或者视网膜51后方成像,不会驱使眼轴54往后过度扩张,对于青少年,眼轴54正是发育的关键时期,本非对称离焦镜片可以抑制眼轴54往后过度扩张,以此实现矫正青少年近视。
在本公开中,底面21的内径r1为800μm-1200μm;微透镜2凸出于镜片本体1进光面11的高度h为0.5μm-1.5μm;圆弧面22的半径r2为1.5×10 5μm-2.5×10 5μm,从而,这些微透镜2的离焦量在+2.5D到 +3.0D之间,或者高于+3.0D。因此,本公开可以根据患者的近视度数,相应地设置离焦区3的离焦量。一般地,本公开的远视区31、近视区32、鼻侧区33和颞侧区34的离焦量均可以设置为+2.5D至+3.0D,以适配大部分患者的近视度数。本公开还可以根据少部分患者的近视度数,如青少年患者近视度数为600°时,本公开可以将远视区31、近视区32、鼻侧区33或颞侧区34的离焦量设为+6.0D。
一般地,基于眼球特有的结构,眼底近似球体,视网膜51黄斑位置属于成像区域,由此向周边到角膜53前顶点的距离是逐渐变化的。因此,在本公开中,多个微透镜2以镜片本体1进光面11的中心为圆心,且由中心向外、呈多排圆环状分布。再基于眼球视物的运动轨迹,此轨迹是从中心正视状态向周边转动,因此,这些微透镜2是从镜片本体1的中心向周边扩散,以确保在眼镜的有效视野区域内,都能有完整的离焦效果。
在某些实施方案中,相邻的两排微透镜2之间的间距b1为底面21的内径r1的1.5倍至2.5倍;一排微透镜2中的相邻的两个微透镜2之间的间距b2为底面21的内径r1的1.5倍至2.5倍,这样,可以防止相邻的两个微透镜2之间产生干涉,造成离散的光线相互交织,而影响离焦的效果。
在本公开中,镜片本体1具有正视区4,正视区4分布于离焦区3的中心处,正视区4用于矫正视力,经过正视区4的光线会在视网膜51上清晰成像,以使患者可以看清楚,以便于患者可以进行日常活动。
本公开将正视区4分布于离焦区3的中心处,是基于人眼视物习惯,在日常生活中,人们习惯于正视物体,即物体所反射的光线直射进晶状体52,经晶状体52折射后在视网膜51上聚焦、成像;因此,患者佩戴本镜片时,正视区4能够满足物体所反射的光线直射进晶状体52,使人们可以清晰视物,离焦区3可以使斜射进晶状体52的光线离焦,以能够矫正近视。
这里需要说明一下,矫正视力,是指通过镜片折射、使光线可以在患者视网膜51上清晰成像,而撤去镜片时,患者仍然看不清物体;矫正近视,则是通过使即将要进入眼睛晶状体52的平行光线在视网膜 51前聚焦,使得这些光线在到达视网膜51时是离散的,无法在视网膜51上或者视网膜51后方成像,以抑制眼轴54扩张,同时,还可以驱使眼轴54缩短,以使得离焦光线可以聚焦在视网膜51上,矫正近视,后期患者近视眼便会痊愈,无需佩戴眼镜,也能清晰视物。
本公开可以根据人眼球的视场对离焦区3进行合理的光区划分,远视区31为正视区4的水平径线41逆时针方向30°~150°的扇形区域α1;颞侧区34为正视区4的水平径线41逆时针方向150°-225°的扇形区域α4;近视区32为正视区4的水平径线41逆时针方向225°-315°的扇形区域α2;鼻侧区33为正视区4的水平径线41逆时针方向30°至顺时针方向45°的扇形区域α3;其中,正视区4的水平径线41过镜片本体1进光面11的中心。
一般情况下,视近时,眼球会产生下旋和内旋两个动作,因此,将离焦区3划分为远视区31、颞侧区34、近视区32和鼻侧区33,以使得离焦区3可以产生各个方位的不一致的离焦量,这样,能更有效的起到离焦的效果和不会因过度调节而产生视疲劳,以能有效抑制眼轴54增长,矫正近视。
在某些实施方案中,微透镜2与镜片本体1为一体成型结构,或者微透镜2为采用压贴方式设置于镜片本体1上,可以采用注塑的方式,直接将本非对称离焦镜片注塑成型,以缩短工期,也可以采用压贴方式,将微透镜2压贴于镜片本体1上,采用压贴方式时,微透镜2可以和镜片本体1同时加工,这样,也可以缩短工期。
在本公开中,镜片本体1包括PC镜片,PC镜片,别称太空片、宇宙片,具有强抗冲击性、重量轻等优点。
在本公开中,微透镜2的材质为PMMA、PET或者PC。PMMA,中文名称为聚甲基丙烯酸甲酯,具有高透明度,低价格,易于机械加工等优点。PET,中文名称为聚对苯二甲酸乙二醇酯树脂,特点是坚硬,刚度强,强度高,有韧性,摩擦系数小。PC,中文名称为聚碳酸酯,是一种强韧的热塑性树脂。将PMMA、PET和PC用作于微透镜2,可以实现折射光线,且可以保证微透镜2的结构稳定。
如图5所示出,在第二方面,本公开还提供了眼镜,其包括镜框 以及至少一个本公开所述的非对称离焦镜片;非对称离焦镜片设于镜框上。
本公开的眼镜包括镜框以及至少一个本公开的非对称离焦镜片,镜框可以将非对称离焦镜片悬空固定于患者的眼睛前,以保证本非对称离焦镜片可以稳定地对光线进行离焦。
应当指出,在说明书中提到的“一实施例”、“实施例”、“示例性实施例”、“某些实施例”等表示所述的实施例可以包括特定特征、结构或特性,但未必每个实施例都包括该特定特征、结构或特性。此外,这样的短语未必是指同一实施例。此外,在结合实施例描述特定特征、结构或特性时,结合明确或未明确描述的其他实施例实现这样的特征、结构或特性处于本领域技术人员的知识范围之内。
应当容易地理解,应当按照最宽的方式解释本公开中的“在……上”、“在……以上”和“在……之上”,以使得“在……上”不仅意味着“直接处于某物上”,还包括“在某物上”且其间具有中间特征或层的含义,并且“在……以上”或者“在……之上”不仅包括“在某物以上”或“之上”的含义,还可以包括“在某物以上”或“之上”且其间没有中间特征或层(即,直接处于某物上)的含义。
此外,文中为了便于说明可以使用空间相对术语,例如,“下面”、“以下”、“下方”、“以上”、“上方”等,以描述一个元件或特征相对于其他元件或特征的如图所示的关系。空间相对术语意在包含除了附图所示的取向之外的处于使用或操作中的器件的不同取向。装置可以具有其他取向(旋转90度或者处于其他取向上),并且文中使用的空间相对描述词可以同样被相应地解释。
需要说明的是,在本文中,诸如“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还 包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
最后应说明的是,以上各实施例仅用以说明本公开的技术方案,而非对其限制;尽管参照前述各实施例对本公开进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本公开各实施例技术方案的范围。

Claims (10)

  1. 非对称离焦镜片,其包括镜片本体,所述镜片本体进光的一侧面设有多个呈环状分布的微透镜,多个所述微透镜共同形成离焦区;
    所述离焦区包括远视区、近视区、鼻侧区和颞侧区;
    其中,所述远视区分布于所述镜片本体进光面中心的上方,所述近视区分布于所述镜片本体进光面中心的下方,所述鼻侧区分布于所述镜片本体进光面靠近鼻子的一侧,所述颞侧区分布于所述镜片本体进光面远离鼻子的一侧。
  2. 如权利要求1所述的非对称离焦镜片,其中,所述微透镜具有与所述镜片本体进光面连接的底面以及凸出于所述镜片本体进光面的圆弧面;
    优选所述底面的内径r1为800μm-1200μm;
    更优选所述微透镜凸出于所述镜片本体进光面的高度h为0.5μm-1.5μm;
    甚至更优选所述圆弧面的半径r2为1.5×10 5μm-2.5×10 5μm。
  3. 如权利要求1或2所述的非对称离焦镜片,其中,多个所述微透镜以所述镜片本体进光面的中心为圆心,且由所述中心向外、呈多排圆环状分布。
  4. 如权利要求1至3中任一权利要求所述的非对称离焦镜片,其中,相邻的两排所述微透镜之间的间距为所述底面的内径r1的1.5倍至2.5倍;
    优选一排所述微透镜中的相邻的两个所述微透镜之间的间距为所述底面的内径r1的1.5倍至2.5倍。
  5. 如权利要求1至4中任一权利要求所述的非对称离焦镜片,其中,所述镜片本体具有正视区,所述正视区分布于所述离焦区的中心处。
  6. 如权利要求1至5中任一权利要求所述的非对称离焦镜片,其中,所述远视区为所述正视区的水平径线逆时针方向30°-150°的扇形区域;
    优选所述颞侧区为所述正视区的水平径线逆时针方向150°-225°的扇形区域;
    更优选所述近视区为所述正视区的水平径线逆时针方向225°-315°的扇形区域;
    甚至更优选所述鼻侧区为所述正视区的水平径线逆时针方向30°至顺时针方向45°的扇形区域;
    其中,所述正视区的水平径线过所述镜片本体进光面的中心。
  7. 如权利要求1至6中任一权利要求所述的非对称离焦镜片,其中,所述微透镜与所述镜片本体为一体成型结构,或者所述微透镜为采用压贴方式设置于所述镜片本体上。
  8. 如权利要求1至7中任一权利要求所述的非对称离焦镜片,其中,所述镜片本体包括PC镜片。
  9. 如权利要求1至8中任一权利要求所述的非对称离焦镜片,其中,所述微透镜的材质为PMMA、PET或者PC。
  10. 眼镜,其包括镜框以及至少一个权利要求1至9中任一权利要求所述的非对称离焦镜片,其中,所述非对称离焦镜片设于所述镜框上。
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CN105785589A (zh) * 2016-05-10 2016-07-20 段亚东 四象限区周边离焦框架眼镜片
CN210690971U (zh) * 2019-10-27 2020-06-05 段亚东 微透镜周边离焦眼镜片
WO2022029031A1 (en) * 2020-08-07 2022-02-10 Carl Zeiss Vision International Gmbh Progressive addition lens for myopia control and method of manufacturing the same
CN217739646U (zh) * 2022-06-15 2022-11-04 阿尔玻科技有限公司 非对称离焦镜片及应用其的眼镜

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