WO2017041257A1 - 防眩光的矫正镜片 - Google Patents

防眩光的矫正镜片 Download PDF

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Publication number
WO2017041257A1
WO2017041257A1 PCT/CN2015/089290 CN2015089290W WO2017041257A1 WO 2017041257 A1 WO2017041257 A1 WO 2017041257A1 CN 2015089290 W CN2015089290 W CN 2015089290W WO 2017041257 A1 WO2017041257 A1 WO 2017041257A1
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Prior art keywords
zone
glare
lens
arc
correcting lens
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PCT/CN2015/089290
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English (en)
French (fr)
Inventor
董晓青
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董晓青
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Priority to PCT/CN2015/089290 priority Critical patent/WO2017041257A1/zh
Publication of WO2017041257A1 publication Critical patent/WO2017041257A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/04—Contact lenses for the eyes

Definitions

  • the invention relates to the technical field of lenses, in particular to an anti-glare correcting lens.
  • Presbyopia is a condition in which a completely suitable permanent therapy has not yet been developed.
  • the most common traditional method is to wear glasses, which can be two pairs of single-lens glasses, a multi-focal lens integrated into a pair, or a contact lens with multiple focal lengths.
  • the trouble of two pairs of glasses is natural, but in multi-focal lenses, the conversion of the visual lens must be carried out in a tilted or downward-looking posture, which is obviously inconvenient.
  • the synchronous visual lens the deep presbyopia cannot be satisfied. Patient needs.
  • the solution of the present invention is:
  • An anti-glare correcting lens refers to a corrective lens having a front surface, a rear surface, and an optical axis, the corrective lens comprising:
  • An optical zone comprising a central optical zone at the center of the corrective lens and a peripheral optical zone extending radially outward of the central optical zone, wherein the central optical zone is focused by the front
  • the surface enters and generates a first focus in the direction of the optical axis at an angle of ⁇ 2.5 degrees with the optical axis, and the peripheral optical zone is focused by the front surface, and generates a staggered extension of the optical axis direction and a second focus that is 2 to 10 degrees from the optical axis;
  • a pressure control zone formed by the optical zone extending radially outward
  • each of the front arc portions or the back arc portions is respectively radially outwardly accumulated by the central optical zone by at least two flexural brightnesses, so that the internal and external flexural curvatures differ by 2 to 10 flexural brightnesses to form an aspherical shape;
  • An anti-glare layer disposed on the pressure control zone or the conforming arc zone to absorb or shield the internally reflected light reflected by the back arc portion to the pupil.
  • the anti-glare layer extends radially outward from any of the center points of the correcting lens from 1.5 mm to 7.5 mm.
  • the anti-glare layer is in the form of an endless belt, and the belt has a width ranging from 0.1 mm to 6 mm.
  • the anti-glare layer has a thickness of from 1 micrometer to 1 millimeter.
  • the anti-glare layer is disposed on the front surface, the rear surface, or one of the front surface and the rear surface by a transfer method, a pad printing method, or a spray method.
  • the corrective lens is one of an artificial crystal lens, a soft contact lens, a hard contact lens, or a soft and hard hybrid contact lens.
  • the anti-glare layer is one of a single color, a multi-color, a mixed color, a gradation color, a photosensitive color, or a thermal color.
  • the correcting lens is provided with at least one shaft thickness, and the thickness of the shaft is calculated from a position of any point on the correcting lens along a direction parallel to the optical axis, and a distance thickness of the front arc portion to the back arc portion is calculated.
  • the minimum axial thickness of the pressure control zone is less than the minimum axial thickness of the optical zone and the minimum axial thickness of the conformal arc zone, and the maximum axial thickness of the pressure control zone is greater than the maximum axial thickness of the optical zone and the conformal arc The maximum shaft thickness of the zone.
  • the invention relates to an inventor who uses an aspherical lens design to achieve a multifocal distance function and a corrective lens for treating a non-emphasis eye, and an anti-glare corrective lens which can shield the external straight line or the refracted scattered light.
  • the main purpose of the present invention is to perform an eye examination by a professional to determine the type and severity of the non-emphasic eye, and then select or design a soft contact lens having an appropriate front arc and back arc to treat the non-emphagus eye. Or use its multi-focus function to correct presbyopia, while avoiding the glare caused by non-spherical lenses.
  • an eye examination is first performed by a professional to determine the type and severity of the non-correcting eye, and then the soft and appropriate front arc and back arc are selected or designed.
  • Contact lenses to treat non-corrective eyes, or to correct presbyopia with its multi-focus function, while avoiding the glare caused by non-spherical lenses.
  • the central optical zone and the peripheral optical zone of the optical zone have a bending yield which differs by at least two flexural brightness on the front arc portion or the back arc portion, and the two positions are not formed.
  • the two focal points overlap each other, and the function of multifocal correction lens is achieved, and the front arc portion and the back arc portion of the pressure control region and the conforming arc region are used to completely convey the surface shape of the cornea, and the reverse return of the eyelid is utilized.
  • the anti-glare layer is disposed within the range of the pressure control zone and the conforming arc zone to shield or absorb light that may be abnormally refracted or reflected to the pupil, thereby avoiding unnecessary light affecting the user's field of view and clarity.
  • the shape and color of the anti-glare layer indirectly achieve the purpose of beautifying the window of the soul.
  • Figure 1 is a front view of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • Figure 3 is a view showing the state of use of the present invention.
  • Figure 4 is a schematic diagram 1 of the multi-focus implementation of the present invention.
  • Figure 5 is a second embodiment of the multi-focus implementation of the present invention.
  • Figure 6 is a schematic view showing the corrective implementation of the present invention.
  • Figure 7 is a schematic view of the anti-glare implementation of the present invention.
  • the anti-glare correcting lens 1 of the present invention refers to a correcting lens 1 having a front surface 11 , a rear surface 12 , and an optical axis 13 .
  • a correcting lens 1 having a front surface 11 , a rear surface 12 , and an optical axis 13 .
  • the optical zone 2 comprises a central optical zone 21 at the center of the correcting lens 1, and a peripheral optical zone 22 extending radially outward of the central optical zone 21, wherein the central optical zone 21 is focused by light
  • the front surface 11 enters and produces a first focus A in the direction of the optical axis 13 at an angle ⁇ 2.5 degrees with respect to the optical axis 13, and the light is incident from the front surface 11 when the peripheral optical zone 22 is focused, and produces a direction with the optical axis 13 a second focus B staggered and extending about 2 to 10 degrees from the optical axis 13;
  • the arc 51, the front arc 52 of the pressure control zone, and the front arc 53 of the bonding arc zone, and the back arc section 6 are a base arc 61 in each zone, a back arc 62 of the pressure control zone, and a back arc 63 of the bonding arc zone, respectively
  • the bending curvature of the front arc portion 5 or each of the back arc portions 6 is respectively radially outwardly accumulated by the central optical zone 21 by at least two brilliance, so that the internal and external bending curvatures differ by 2 to 10 yaws, forming an aspherical shape. ;and
  • An anti-glare layer 7 disposed on the pressure control zone 3 or the bonding arc zone 4 for absorbing or shielding the internally reflected light reflected by the back arc portion 6 to the pupil, wherein the anti-glare layer 7 is formed by the correcting lens 1
  • the center point extends radially outward from any of 1.5 mm (mm) to 7.5 mm (mm), and has a thickness of about 1 micrometer (um) to 1 centimeter (mm), and has an annular band shape and a wide band width range. It is from 0.1 mm (mm) to 6 mm (mm).
  • the lenses of the present invention are preferably made to have the same hardness as current soft contact lenses.
  • the material is therefore selected from the group consisting of LotrafilconA, BalafilconA, Lotrafilcon B, ComfilconA, pHEMA (polyhydroxyethylmethacrylate), OmafilconA or GalyfilconA.
  • Lens materials with higher hardness than these soft contact lenses are still possible, as long as the lens is placed behind the cornea, the posterior surface 12 can be curved along the shape of the cornea.
  • the material of the anti-glare layer 7 may be selected from: aqueous or oily colorants (such as ink), carbon black, organic and inorganic dyes (dyestaffs), pigments, opacifiers or reflective agents (such as titanium dioxide). , a second alumina pearl powder shell powder, a photochromic agent or a thermochromic agent, or a mixture or polymer of the above materials, to achieve a ring pattern with absorption or shielding effect, the pattern may be a mesh, a dot, a strip Continuous or discontinuous graphics of shapes, lumps, squares, circles, triangles, hearts, stars, polygons.
  • the contact lenses of the present invention can be produced in a manner well known in the industry, such as turning, rotary molding, and molding, or by soft molding, such as full hydration or partial hydration, molded in a glass mold, which should The size of the dried wafer produced is determined by the coefficient of expansion of the material used.
  • the anti-glare layer 7 is produced by a transfer method: a film printed in advance and then transferred to the lower layer or the middle layer of the contact lens; or a printing method: the ink is first produced on the mold to make a pattern, and the color ring is printed on Contact lens upper layer or middle layer; or spray method: ink color to the lower layer or middle of the contact lens.
  • an optical device or artificial crystal of a contact lens provides a central optical zone 21 having a refractive power for correcting long-distance vision, which is about 4-5 degrees for a central viewing angle.
  • a refractive power for correcting long-distance vision which is about 4-5 degrees for a central viewing angle.
  • the adjacent outwardly extending portion of the optical device further provides a close optical zone 2 having a shorter focal length or a higher ADD to provide a near
  • the image formed from the central optical zone 21 is so clear that the close object triggers the PVS from the off-axis macular fovea for reading;
  • the peripheral viewing angle of the optical device is larger than the foveal focal distance 4-5 degrees but at 18-20 degrees relative to the center (or 9-10 degrees on either side of the optical axis 13 or the visual axis) corresponds to the macular area (up to 10 degrees) and the macular area (up to 20 Degree) within the visual breadth range for reading;
  • the sharpness contrast of the distant and close optical zones 2 is sufficiently significant for the human brain to interpret the peri-optical zone and the perivitroral zone perception from the device's near-optical zone 2 Image (text), but suddenly Coaxially corresponding to the foveal region 2 of the optical apparatus remote center perceive blur images
  • the soft contact lens can be bent, especially when the thickness of the contact lens center is thin, and it will bend along the surface shape of the cornea.
  • a soft spherical contact lens does not form a tear lens under the lens, so the original surface shape of the cornea, such as curvature and astigmatism, is transmitted to the back surface 12 of the soft contact lens and then turned to soft The front surface 11 of the contact lens.
  • a hard spherical contact lens can neutralize most of the corneal astigmatism and the degree of partial ametropia, and does not turn through the front surface 11 (degree surface) of the contact lens. Therefore, the principle of the corneal shaping of the soft contact lens of the present invention is different from the principle that the hard lens utilizes (not limited to) the optical zone 2 and the conforming arc zone 4 for performing the spa-type compression massage.
  • the soft contact lens can transduce the surface shape of the cornea to the posterior surface 12 of the contact lens and then turn it through to its front surface 11, the force can be transmitted in reverse. That is, the front surface 11 of the contact lens is conveyed by the eyelids and then turned to the back side, which forces will eventually exert pressure on the cornea. Therefore, on the contact lens, the lens area covering the front surface 11 and the rear surface 12 at the same position of the cornea can be functionally regarded as one body. Therefore, the change in curvature and thickness, whether on the front surface 11 or the back surface 12, is transmitted to the same relative position of the cornea for Orthokeratology or correction.
  • Hard contact lenses convey the pressure of the eyelids to the corneal surface in a continuous contact and non-contact zone.
  • the hardness of the material is used to apply positive and negative pressures in the appropriate areas of the cornea, which has changed its shape.
  • a soft contact lens can be bent, and the center to the periphery will bend along the surface shape of the cornea, so the eyelid pressure will be evenly transmitted to the entire cornea, and no positive or negative pressure can be generated for Orthokeratology or Correction.
  • the relative positive and negative forces can be generated by the difference in thickness of the soft lens material instead of the difference in curvature, similar to the relative pressure exerted by the hard corneal correcting lens 1 in different arc regions.
  • the relative thickness of the soft contact lens in different regions can be used to convey the pressure of the eyelids to the front surface 11 of the cornea with a relative positive or negative pressure for Orthokeratology.
  • a thin lens area is relatively negatively applied, and a thick area is relatively positively applied. This is like a hard corneal correction contact lens, which can be shaped by the steep and flat areas of the posterior surface 12 of the lens.
  • the front arc portion 5 and the back arc portion 6, especially the pressure control region 3 and the portion of the bonding arc region 4, may be in the back arc portion when the external light is directly reflected or refracted into the lens interior.
  • the position of 6 produces internal reflection.
  • a part of the light image other than the direction of the line of sight is printed into the eye curtain, so that an image that is blurred, unclear, or even the edge of the line of sight does not appear. The so-called glare problem.
  • the anti-glare layer 7 is provided on the pressure control zone 3, the bonding arc zone 4, the pressure control zone 3 and the bonding arc zone 4, or the pressure control zone 3 and the bonding arc zone 4, so that the anti-glare layer is provided.
  • Layer 7 shields or absorbs the direct refracted astigmatism light from the outside and the refracted astigmatism light inside the lens (the dotted arrow in the figure indicates the internally reflected light that is obscured or absorbed) to enhance the field of view, enhance contrast, focus vision, and reduce visual blur. Even further with a beautiful make-up effect, masking changes the color of the cornea iris.

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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

一种防眩光的矫正镜片（1），其是利用中央光学区（21）与周边光学区（22）在光轴（13）的2度内形成第一焦点、及于2～10度范围内形成第二焦点，以具有多焦矫正功能，并将前弧部（5）或背弧部（6）的弯屈曲率分别由中央光学区（21）向外径向累加相差至少2个屈亮度，使镜面形成一非球面状，再以防眩层（7）吸收背弧部（6）造成的内反射，以防止眩光的问题发生。

Description

防眩光的矫正镜片 技术领域
本发明涉及镜片的技术领域，特别是指一种防眩光的矫正镜片。
背景技术
老花眼是一种尚未开发出完全合适的永久性疗法的情形。最常见的传统方法就是戴眼镜，而眼镜可以是两副单光眼镜、整合成一对的多焦镜片、或配戴具有多焦距的隐形眼镜。两副眼镜的麻烦自然不在话下，而多焦镜片中，转换视觉式镜片必须采用一种头部倾斜或是向下看的姿势进行，明显不方便，至于同步视觉式镜片则无法满足深度老花眼患者的需求。
另外，非正视眼的治疗方式，则使用不同屈亮度的硬式隐形眼镜来改变角膜形状，这样用途的隐形眼镜可以持续针对角膜特定位置施加压力，逐步改变角膜表面成为需要的形状。但硬式隐形眼镜的不舒适感较难克服，用软式隐形眼镜前表面内翻的方式则无法预测或掌控其矫正效果，用复合式则有价格及耐用性问题。
再者，因隐形眼镜镜面的不同屈亮度，在外界光线直射或折射到镜片内面时，根据入射位置不同，可能会在镜片与眼球间产生内反射，而当内反射影响到瞳孔时，便产生所谓的眩光，进而影响视野及清晰度。
发明内容
本发明的目的在于提供一种利用非球面镜片设计达成具有多焦距功能及治疗非正视眼的矫正镜片，且可遮蔽外界直线或折射的散射光线的防眩光的矫正镜片。
为了达成上述目的，本发明的解决方案是：
一种防眩光的矫正镜片，其是指一具有一前表面、一后表面、及一光轴的矫正镜片，该矫正镜片包含有：
一光学区，该光学区包含有一位于该矫正镜片中央的中央光学区、及一位于该中央光学区一侧且径向往外延伸的周边光学区，其中该中央光学区聚焦时光线是由该前表面进入，并沿该光轴方向产生一与该光轴夹角≤2.5度的第一焦点，而该周边光学区聚焦时光线由该前表面进入，并产生一与该光轴方向交错延伸且偏离该光轴2至10度的第二焦点；
一由该光学区径向往外延伸形成的压力控制区；
一由该压力控制区径向往外延伸形成的贴合弧区；
多个分别设于该光学区、该压力控制区及该贴合弧区的前弧部及背弧部，且前弧部位于该前表面一侧，该背弧部位于该后表面一侧，各前弧部或各背弧部的弯屈曲率分别由该中央光学区向外径向累加相差至少2个屈亮度，使内外弯屈曲率相差2至10个屈亮度，而成一非球面状；及
一设于该压力控制区或该贴合弧区上的防眩层，以吸收或遮蔽因所述背弧部而反射至瞳孔的内反射光线。
所述防眩层由该矫正镜片中心点距离1.5毫米至7.5毫米任一处向外辐射状延伸。
所述防眩层呈环带状，且该环带宽度范围为0.1毫米至6毫米。
所述防眩层的厚度为1微米至1毫米。
所述防眩层以转印法、移印法或喷洒法设置于该前表面、该后表面、或该前表面及该后表面之间的其中之一者。
所述矫正镜片为人工水晶体、软式隐形眼镜、硬式隐形眼镜、或软硬混合型隐形眼镜的其中之一者。
所述防眩层为单色、多色、混合色、渐层色、感光色或感热色的其中之一者。
所述矫正镜片上设有至少一轴厚度，该轴厚度是由该矫正镜片上任一点位置沿平行该光轴的方向，计算该前弧部至背弧部的距离厚度。
所述压力控制区的最小轴厚度小于该光学区的最小轴厚度及该贴合弧区的最小轴厚度，而该压力控制区的最大轴厚度大于该光学区的最大轴厚度及该贴合弧区的最大轴厚度。
本发明系利用非球面镜片设计达成多焦距功能及治疗非正视眼的矫正镜片，且可遮蔽外界直线或折射之散射光线的防眩光之矫正镜片的发明专利者。
本发明之主要目的在于：由专业人员做眼部检查，以决定非正视眼之种类与严重程度，然后选择或设计具有适当前弧部及背弧部的软式隐形眼镜，来治疗非正视眼，或藉其多焦功能矫正老花眼，同时做到避免非球状镜片造成的眩光问题。
采用上述方案后，使用本发明防眩光的矫正镜片时，先由专业人员做眼部检查，以决定非正视眼的种类与严重程度，然后选择或设计具有适当前弧部及背弧部的软式隐形眼镜，来治疗非正视眼，或藉其多焦功能矫正老花眼，同时做到避免非球状镜片造成的眩光问题。
当使用者配戴本发明防眩光的矫正镜片时，利用光学区的中央光学区与周边光学区在前弧部或背弧部上具有相差至少两个屈亮度的弯曲屈率，形成二位置不相重迭的两焦点，而达成多焦距矫正镜片的功能，并利用压力控制区与贴合弧区的前弧部及背弧部，完整传达角膜的表面形状，并利用眼皮反向回传的力量进行角膜塑形或矫正非正视眼。另外，将防眩层设于压力控制区及贴合弧区的范围内，以遮蔽或吸收可能不正常折射或反射至瞳孔的光线，而避免非必要光线影响使用者的视野及清晰度，也通过防眩层的形状色彩，间接达到美化灵魂之窗的目的。
附图说明
图1为本发明的前视图；
图2为图1的A-A剖视图；
图3为本发明的使用状态图；
图4为本发明的多焦实施示意图一；
图5为本发明的多焦实施示意图二；
图6为本发明的矫正实施示意图；
图7为本发明的防眩光实施示意图。
其中：
矫正镜片…1
前表面…11
后表面…12
光轴…13
光学区…2
中央光学区…21
周边光学区…22
压力控制区…3
贴合弧区…4
前弧部…5
光学前弧…51
压力控制区前弧…52
贴合弧区前弧…53
背弧部…6
基弧…61
压力控制区背弧…62
贴合弧区背弧…63
防眩层…7
具体实施方式
为了进一步解释本发明的技术方案，下面通过具体实施例来对本发明进行详细阐述。
请参阅图1至图7，由图中可清楚看出本发明防眩光的矫正镜片1是指一具有一前表面11、一后表面12、及一光轴13的矫正镜片1，矫正镜片1包括：
一光学区2，光学区2包含有一位于矫正镜片1中央的中央光学区21、及一位于中央光学区21一侧且径向往外延伸的周边光学区22，其中中央光学区21聚焦时光线由前表面11进入，并沿光轴13方向产生一与光轴13夹角≤2.5度的第一焦点A，而周边光学区22聚焦时光线由前表面11进入，并产生一与光轴13方向交错延伸且偏离光轴13约2至10度的第二焦点B；
一由光学区2径向往外延伸形成的压力控制区3；
一由压力控制区3径向往外延伸形成的贴合弧区4；
多个分别设于光学区2、压力控制区3及贴合弧区4的前表面11及后表面12上的前弧部5及背弧部6，其中前弧部5在各区分别为光学前弧51、压力控制区前弧52、及贴合弧区前弧53，而背弧部6在各区分别为基弧61、压力控制区背弧62、及贴合弧区背弧63，又各前弧部5或各背弧部6的弯屈曲率分别由中央光学区21向外径向累加相差至少2个屈亮度，使内外弯屈曲率相差2至10个屈亮度，而成一非球面状；及
一设于压力控制区3或贴合弧区4上的防眩层7，用以吸收或遮蔽因背弧部6而反射至瞳孔的内反射光线，其中防眩层7是由该矫正镜片1中心点距离1.5毫米（mm）至7.5毫米(mm)任一处向外辐射状延伸，其厚度约为1微米(um)至1厘米(mm)，并呈现环带状，且环带宽度范围为0.1毫米(mm)至6毫米(mm)。
本发明镜片在制作时，其硬度最好与目前的软式隐形眼镜相当。故材料选自下列群组：LotrafilconA、BalafilconA、LotrafilconB、ComfilconA、pHEMA(polyhydroxyethylmethacrylate)、OmafilconA或GalyfilconA。比这些软式隐形眼镜硬度高的镜片质料，还是可能使用，只要确认镜片放在角膜之后，其后表面12可以顺着眼角膜的形状弯曲即可。
而防眩层7的材料则可选自：水性或油性染色剂(如油墨)、碳黑(carbonblack)、有机及无机染料(dyestaffs)、颜料(pigment)、遮光剂或反光剂(如二氧化钛)、二氧化铝珍珠粉贝壳粉、光变色剂或热变色剂、或上述材料的混合或聚合物，以达到制作一具有吸收或遮蔽效果的环型图，图形可为网状、点状、条状、团状、方形、圆形、三角形、心形、星形、多边形的连续或不连续图形。
本发明隐形眼镜可以使用产业所熟知的方式来生产，例如车削、旋模及铸模法，或以软式铸模的工法进行，例如以全水化或部分水化，以玻璃模型铸模，其所应制造的干片大小，则根据使用材料的膨胀系数来决定。而防眩层7的制作则为转印法：预先印好环的薄膜再转印于隐形眼镜镜片上层下层或中间；或移印法：先制作油墨在于模具上制作图形，印制色环于隐形眼镜镜片上层下层或中间；又或者是喷洒法：以喷墨方式将色环于隐形眼镜镜片上层下层或中间。
如图4至图5，实际使用时，一个隐形眼镜的光学装置或人工水晶体，是提供一个中央光学区21其具有屈折力用以矫正远距离视力，其对于中心所张视角约4-5度，对应位于人眼眼角膜平面后方约22。6mm处的1。5mm黄斑中心凹；光学装置相邻往外延伸部分更进一步提供一近距光学区2其具有较短焦距或较高ADD以提供近距影像其较中央光学区21形成的影像清楚以致于近距物体触发从离轴的视网膜黄斑中心凹的PVS用以阅读；光学装置的周边近距区所张视角是大于黄斑中心凹远距区的4-5度但是在相对中心18-20度(或是光轴13或视轴每一边的9-10度)以内对应于黄斑周区(最大至10度)及黄斑旁区(最大至20度)其在用以阅读的视觉广度范围内；远距和近距光学区2的清晰度对比对于人脑是足够显著以解读来自装置近距光学区2以视网膜黄斑周区及黄斑旁区知觉的影像(文字)，却忽略对应于该装置远距光学区2的黄斑中心凹的中央所知觉的同轴模糊影像(文字)。
如图6所示，本软式隐形眼镜可以曲折，尤其是当隐形眼镜中心厚度较薄的时候，会顺着角膜的表面形状而弯曲。一个软式球面隐形眼镜并不会在镜片下方形成泪液镜片的效果，因此角膜原来的表面形状，如弯曲度与散光度数，都会传达到软式隐形眼镜的后表面12，然后转透到软式隐形眼镜的前表面11。相对的，一个硬式球面隐形眼镜可以中和大部分的角膜散光度数以及部分屈光不正的度数，不会转透到隐形眼镜的前表面11(度数面)来。因此，本发明软式隐形眼镜完成角膜塑形的原理，与硬式镜片利用(不限于)其光学区2与贴合弧区4，进行水疗式压迫按摩的原理并不相同。
由于软式隐形眼镜可以将角膜的表面形状转透到隐形眼镜的后表面12，然后转透到其前表面11，力量就可以反过来传递。也就是，由眼皮传达隐形眼镜的前表面11，然后转透到其背面，该力量最终会施压在角膜上。因此，隐形眼镜上，覆盖在角膜同一个位置的前表面11与后表面12的镜片区域，在功能上可以视为一体。因此其弯曲度与厚度的改变，无论是在前表面11或后表面12，都会被传达到角膜同一个相对位置，进行角膜塑形或矫正。
而硬式隐形眼镜将眼皮压力传达到角膜表面的方式，是以连续接触与不接触的环区，利用材料的硬度，在角膜适当的区域施加正压与负压，已改变其形状。如前所述，一个软式隐形眼镜可以曲折，中央到外围都会顺着角膜的表面形状而弯曲，因此眼皮压力将均匀的传达到整个角膜，无法产生正压与负压以进行角膜塑形或矫正。本软式隐形眼镜，藉由软式镜片材料的厚度差异以代替弧度差异，可以产生相对的正向力与负向力，类似于硬式角膜矫正镜片1在不同弧区所施加的相对压力。本软式隐形眼镜在不同区域的相对厚度，可以将眼皮的压力，以相对的正压力或负压力传达到角膜的前表面11以进行角膜塑形。一个薄的镜片区域相对施加负压力，而一个厚的区域相对施加正压力，这就如同硬式角膜矫正隐形眼镜，利用其镜片后表面12的陡区与平区，都可以对角膜进行塑形。
如图7所示，本发明的前弧部5及背弧部6，尤其是压力控制区3及贴合弧区4的部分，可能在外界光线直射或折射进入镜片内部时，在背弧部6的位置产生内反射，当然也有可能因此将光线反射至瞳孔，此时便会导致部分视线方向以外的光线影像印入眼帘，如此便产生模糊、不清晰、甚至视线边缘不该出现的影像，即所谓的眩光问题。故，通过在压力控制区3上、贴合弧区4上、压力控制区3及贴合弧区4间、或压力控制区3及贴合弧区4上设置防眩层7，使防眩层7遮蔽或吸收外面直射折射散色光线及镜片内部反射折射散色光线(图中虚线箭头表示被遮蔽或吸收的内反射光线)，而达到增强视野、增强对比、集中视力、减少视觉模糊，甚至进一步具有美丽化妆作用，遮蔽改变角膜虹膜颜色。
上述实施例和图式并非限定本发明的产品形态和式样，任何所属技术领域的普通技术人员对其所做的适当变化或修饰，皆应视为不脱离本发明的专利范畴。

Claims (9)

1、一种防眩光的矫正镜片，其是指一具有一前表面、一后表面、及一光轴的矫正镜片，该矫正镜片包含有：
一光学区，该光学区包含有一位于该矫正镜片中央的中央光学区、及一位于该中央光学区一侧且径向往外延伸的周边光学区，其中该中央光学区聚焦时光线是由该前表面进入，并沿该光轴方向产生一与该光轴夹角≤2.5度的第一焦点，而该周边光学区聚焦时光线由该前表面进入，并产生一与该光轴方向交错延伸且偏离该光轴2至10度的第二焦点；
一由该光学区径向往外延伸形成的压力控制区；
一由该压力控制区径向往外延伸形成的贴合弧区；
多个分别设于该光学区、该压力控制区及该贴合弧区的前弧部及背弧部，且前弧部位于该前表面一侧，该背弧部位于该后表面一侧，各前弧部或各背弧部的弯屈曲率分别由该中央光学区向外径向累加相差至少2个屈亮度，使内外弯屈曲率相差2至10个屈亮度，而成一非球面状；及
一设于该压力控制区或该贴合弧区上的防眩层，以吸收或遮蔽因所述背弧部而反射至瞳孔的内反射光线。
2、如权利要求1所述的防眩光的矫正镜片，其特征在于：所述防眩层由该矫正镜片中心点距离1.5毫米至7.5毫米任一处向外辐射状延伸。
3、如权利要求1所述的防眩光的矫正镜片，其特征在于：所述防眩层呈环带状，且该环带宽度范围为0.1毫米至6毫米。
4、如权利要求1所述的防眩光的矫正镜片，其特征在于：所述防眩层的厚度为1微米至1毫米。
5、如权利要求4所述的防眩光的矫正镜片，其特征在于：所述防眩层以转印法、移印法或喷洒法设置于该前表面、该后表面、或该前表面及该后表面之间的其中之一者。
6、如权利要求1所述的防眩光的矫正镜片，其特征在于：所述矫正镜片为人工水晶体、软式隐形眼镜、硬式隐形眼镜、或软硬混合型隐形眼镜的其中之一者。
7、如权利要求1所述的防眩光的矫正镜片，其特征在于：所述防眩层为单色、多色、混合色、渐层色、感光色或感热色的其中之一者。
8、如权利要求1所述的防眩光的矫正镜片，其特征在于：所述矫正镜片上设有至少一轴厚度，该轴厚度是由该矫正镜片上任一点位置沿平行该光轴的方向，计算该前弧部至背弧部的距离厚度。
9、如权利要求8所述的防眩光的矫正镜片，其特征在于：所述压力控制区的最小轴厚度小于该光学区的最小轴厚度及该贴合弧区的最小轴厚度，而该压力控制区的最大轴厚度大于该光学区的最大轴厚度及该贴合弧区的最大轴厚度。
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CN102033328A (zh) * 2009-10-08 2011-04-27 精工爱普生株式会社 眼镜镜片
US20120033177A1 (en) * 2006-10-26 2012-02-09 Sarver Edwin J Aspheric, astigmatic, multi-focal contact lens with asymmetric point spread function
WO2015038623A1 (en) * 2013-09-12 2015-03-19 Battelle Memorial Institute Lens modification methods

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1672085A (zh) * 2002-08-07 2005-09-21 董晓青 角膜矫正和双光隐形眼镜
CN101002132A (zh) * 2004-07-20 2007-07-18 董晓青 用于对屈光手术后、角膜矫正术后以及圆锥角膜的变形角膜进行重塑的接触镜片
US20120033177A1 (en) * 2006-10-26 2012-02-09 Sarver Edwin J Aspheric, astigmatic, multi-focal contact lens with asymmetric point spread function
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