TWI758731B - A positioning structure for contact lenses - Google Patents

A positioning structure for contact lenses Download PDF

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TWI758731B
TWI758731B TW109115751A TW109115751A TWI758731B TW I758731 B TWI758731 B TW I758731B TW 109115751 A TW109115751 A TW 109115751A TW 109115751 A TW109115751 A TW 109115751A TW I758731 B TWI758731 B TW I758731B
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area
stable
zone
thickness
surrounding
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TW109115751A
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TW202142928A (en
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李家麟
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亮點光學股份有限公司
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Priority to CN202110490874.XA priority patent/CN113655633B/en
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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
    • G02C7/048—Means for stabilising the orientation of lenses in the eye

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

Abstract

一種隱形眼鏡之定位結構，包括：一光學區；一周圍區，圍繞於該光學區周圍；兩組第一穩定區，位於該周圍區內且對應該光學區的上下位置，該第一穩定區包括相鄰的一凹區及一凸區；以及兩組第二穩定區，位於該周圍區內且對應該光學區的左右位置，該第二穩定區具有一厚區；藉此在上眼瞼及下眼瞼上下張合時，擠壓該第一穩定區及該第二穩定區而達到迅速定位及維持穩定軸向的目的。 A contact lens positioning structure, comprising: an optical zone; a peripheral zone, surrounding the optical zone; two groups of first stabilization zones, located in the peripheral zone and corresponding to the upper and lower positions of the optical zone, the first stabilization zone Including an adjacent concave area and a convex area; and two sets of second stable areas, located in the surrounding area and corresponding to the left and right positions of the optical area, the second stable area has a thick area; thereby on the upper eyelid and When the lower eyelid is opened and closed up and down, the first stable area and the second stable area are squeezed to achieve the purpose of quickly positioning and maintaining a stable axial direction.

Description

一種隱形眼鏡之定位結構 A positioning structure for contact lenses

本發明是有關一種隱形眼鏡之技術領域，尤指一種具有旋轉穩定機制的隱形眼鏡。 The present invention relates to the technical field of contact lenses, in particular to a contact lens with a rotational stabilization mechanism.

某些視力缺陷可藉由於一隱形眼鏡之一或多個表面上設置非球面矯正形式，例如圓柱、雙焦或多焦特徵加以矯正。該等鏡片在使用時必須於眼睛上維持特定定向，方能發揮作用，例如散光隱形眼鏡的散光軸度必須依個人量測軸度且固定才有功效。 Certain vision defects can be corrected by providing aspherical correction forms, such as cylindrical, bifocal, or multifocal features, on one or more surfaces of a contact lens. These lenses must maintain a specific orientation on the eye during use in order to function. For example, the astigmatism axis of astigmatic contact lenses must be measured and fixed according to the individual to be effective.

維持鏡片於眼睛上之特定定向，通常係於製作時變更鏡片之機械特性來達到。各種鏡片穩定方法可分為兩類：第一種靜態穩定：典型案例是於鏡片前表面相對於後表面為偏心、或加厚鏡片下緣，以重力方式維持鏡片定向。第二種為動態穩定，利用眨眼時的上下眼瞼運動以維持鏡片定向，其方式包括於鏡片左右形成對稱的厚區，或是鏡片上下形成對稱且大面積削薄區、再於垂直軸兩側形成厚區，利用眨眼時的上眼瞼及下眼瞼張合推動鏡片轉動且為維持定向，然而此類鏡片厚區面積過大透氧量差，增加配戴著的不舒適感，為此本發明思考提供一種新的隱形眼鏡設計。 Maintaining a specific orientation of the lens on the eye is usually achieved by altering the mechanical properties of the lens during manufacture. Various lens stabilization methods can be divided into two categories: the first static stabilization: the typical case is to maintain the orientation of the lens by gravity by decentered the front surface of the lens relative to the back surface, or by thickening the lower edge of the lens. The second is dynamic stabilization, which uses the movement of the upper and lower eyelids during blinking to maintain the orientation of the lens. The method includes forming a symmetrical thick area on the left and right of the lens, or forming a symmetrical and large area thinning area up and down the lens, and then forming a symmetrical thick area on both sides of the vertical axis. A thick area is formed, and the upper eyelid and lower eyelid are opened and closed during blinking to push the lens to rotate and maintain the orientation. However, the thick area of this type of lens is too large, and the oxygen permeability is poor, which increases the discomfort of wearing. For this reason, the present invention considers A new contact lens design is provided.

本發明之主要目的係提供一種隱形眼鏡之定位結構，主要是在光學區外的上下位置分佈兩組第一穩定區及左右位置分佈兩組第二穩定區，在上眼瞼及下眼瞼上下張合時，擠壓該第一穩定區及該第二穩定區而達到迅速定位及維持穩定軸向的目的。 The main purpose of the present invention is to provide a positioning structure for contact lenses, which is mainly to distribute two sets of first stable zones at the upper and lower positions outside the optical zone and two sets of second stable zones at the left and right positions. The purpose of quickly positioning and maintaining a stable axial direction is achieved by squeezing the first stable area and the second stable area.

本發明之次要目的係提供一種隱形眼鏡，主要是將該第一穩定區由相鄰的凹區與凸區所構成，如此能減少凸區凸起的尺寸，也同步減少第二穩定區加厚區域的面積及厚度，藉此避免降低透氧量、減少配戴的不舒適感。 The secondary objective of the present invention is to provide a contact lens, which mainly comprises that the first stable area is composed of adjacent concave areas and convex areas, so that the size of the convex area can be reduced, and the size of the second stable area can also be reduced simultaneously. The area and thickness of the thick area, thereby avoiding reducing the oxygen permeability and reducing the discomfort of wearing.

為達上述之目的，本發明為一種隱形眼鏡之定位結構，包括一光學區；一周圍區，圍繞於該光學區周圍；兩組第一穩定區，位於該周圍區內且對應該光學區的上下位置，該第一穩定區包括相鄰的一凹區及一凸區；以及兩組第二穩定區，位於該周圍區內且對應該光學區的左右位置，該第二穩定區具有一厚區。 In order to achieve the above-mentioned purpose, the present invention is a positioning structure of a contact lens, comprising an optical zone; a peripheral zone surrounding the optical zone; two sets of first stabilization zones located in the peripheral zone and corresponding to the optical zone. Up and down positions, the first stable area includes a concave area and a convex area adjacent to each other; and two sets of second stable areas are located in the surrounding area and correspond to the left and right positions of the optical area, and the second stable areas have a thickness Area.

在本發明的較佳實施例中，該隱形眼鏡還包括一前曲面及一後曲面，該第一穩定區及第二穩定區是位於該前曲面。 In a preferred embodiment of the present invention, the contact lens further includes a front curved surface and a back curved surface, and the first stable region and the second stable region are located on the front curved surface.

在本發明的較佳實施例中，該凸區的位置較該凹區更靠近鏡片的幾何中心。 In a preferred embodiment of the present invention, the position of the convex area is closer to the geometric center of the lens than the concave area.

在本發明的較佳實施例中，該第一穩定區分佈區域呈彎月形或長條弧形其中至少一種。 In a preferred embodiment of the present invention, the distribution area of the first stable zone is at least one of a meniscus shape or a long arc shape.

在本發明的較佳實施例中，該凹區是此區域厚度較該周圍區其他區域為薄，分佈方式是由該區內厚度最低的谷點採線性或非線性朝外圍區域遞增；該凸區是此區域厚度較該周圍區其他區域為厚，分佈方式是由該區內厚度最高的峰點採線性或非線性朝外圍區域遞減。 In a preferred embodiment of the present invention, the thickness of the concave area is thinner than that of other areas in the surrounding area, and the distribution method is linearly or non-linearly increasing from the valley point with the lowest thickness in the area toward the peripheral area; the convex area The thickness of this area is thicker than that of other areas in the surrounding area, and the distribution method is that the peak point with the highest thickness in this area decreases linearly or non-linearly toward the peripheral area.

在本發明的較佳實施例中，該第二穩定區分佈區域呈圓形、橢圓形、彎弧形其中至少一種。 In a preferred embodiment of the present invention, the distribution area of the second stable zone is at least one of a circle, an ellipse, and a curved arc.

在本發明的較佳實施例中，該第二穩定區具有一厚區，該厚區是此區域厚度較該周圍區其他區域為厚，分佈方式是由該區厚度最高的峰點採線性或非線性朝外圍區域遞減。 In a preferred embodiment of the present invention, the second stable region has a thick region, and the thick region is thicker than other regions in the surrounding region, and the distribution method is linear or linear from the peak point with the highest thickness in the region. The nonlinearity decreases towards the outer regions.

綜合以上所述，本發明為一種隱形眼鏡之定位結構，具有下列幾項優點： To sum up the above, the present invention is a positioning structure for contact lenses, which has the following advantages:

1.第一穩定區是由相鄰的該凹區及該凸區所構成，可達到相對高度之突出結構，由上眼瞼與下眼瞼通過該凹區再碰觸該凸區，達到擠壓定位功能。如無該凹區結構，該凸區結構所凸出前弧表面更高，造成鏡片厚度增加，使透氧量降低及影響配戴舒適感。 1. The first stable area is composed of the adjacent concave area and the convex area, which can achieve a relatively high protruding structure. The upper eyelid and the lower eyelid touch the convex area through the concave area to achieve extrusion positioning. Features. Without the concave area structure, the protruding front arc surface of the convex area structure is higher, which increases the thickness of the lens, reduces the oxygen permeability and affects the wearing comfort.

2.該第一穩定區之初始穩定作用，縮小了該第二穩定區之凸出穩定結構面積，亦可降低第二穩定區對透氧量、舒適感的影響。 2. The initial stabilizing effect of the first stabilizing zone reduces the area of the protruding stabilizing structure of the second stabilizing zone, and also reduces the influence of the second stabilizing zone on oxygen permeability and comfort.

3.當使用者初始戴入隱形眼鏡時，可能偏離散光軸位，當眨眼時可因上眼瞼及下眼瞼同時擠壓該第一穩定區及該第二穩定區，由該第一穩定區及該第二穩定形成的兩個凸出定位點可瞬間使隱形眼鏡轉向定位。 3. When the user initially puts on the contact lens, it may deviate from the axis of astigmatism. When blinking, the first stable area and the second stable area may be squeezed by the upper eyelid and the lower eyelid at the same time. The two convex positioning points formed by the second stable can instantly turn the contact lens into position.

下面將結合具體實施例和附圖，對本發明的技術方案進行清楚、完整地描述。圖式各實施例中，方向表示上、下、左、右、前和後等是相對的，用於解釋本案中不同部件的結構和運動是相對的。當部件處於圖中所示的位置時，這些表示是恰當的。但是，如果元件位置的說明發生變化，那麼認為這些表示也將相應地發生變化。 The technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments and accompanying drawings. In the various embodiments of the drawings, directions indicate that up, down, left, right, front and rear are relative, and are used to explain that the structures and movements of different components in this case are relative. These representations are appropriate when the components are in the positions shown in the figures. However, if the description of the positions of elements changes, it is believed that these representations will change accordingly.

除非另有定義，本文所使用的所有技術和科學術語與屬於本創作技術領域的技術人員通常理解的含義相同。本文中所使用的術語只是為了描述具體實施例的目的，不是旨在限制本創作。本文所使用的術語「和/或」包括一個或多個相關的所列項目的任意的和所有的組合。 Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art of the present invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

本發明之隱形眼鏡配戴於眼睛，在上眼瞼與下眼瞼張合時將作用於鏡片之各種力量加以平衡之優化設計。優化設計在平衡作用於眼部、作用於眼球各部，與最終作用於鏡片之力矩，以導引鏡片轉動而定向。 The contact lens of the present invention is optimally designed to balance the various forces acting on the lens when the upper eyelid and the lower eyelid are opened and closed when the contact lens is worn on the eye. The optimized design balances the moment acting on the eye, acting on each part of the eye, and finally acting on the lens, so as to guide the lens to rotate and orient.

如圖1所示，為本發明隱形眼鏡的平面圖。本創作隱形眼鏡1，包括：一光學區10；一周圍區11，圍繞於該光學區10周圍；兩組第一穩定區20，位於該左右位置周圍區11內且對應該光學區10的上下位置；兩組第二穩定區30，位於該周圍區11內且對應該光學區10的左右位置。藉此在眨眼時由上眼瞼與下眼瞼的張合過程中，擠壓第一穩定區20及第二穩定區30而達到迅速定位及維持穩定軸向的目的。 As shown in FIG. 1, it is a plan view of the contact lens of the present invention. The contact lens 1 of the present creation includes: an optical zone 10; a peripheral zone 11 surrounding the optical zone 10; Position; two sets of second stabilization zones 30 are located in the surrounding zone 11 and correspond to the left and right positions of the optical zone 10 . In this way, during the process of opening and closing the upper eyelid and the lower eyelid during blinking, the first stable region 20 and the second stable region 30 are squeezed to achieve the purpose of quickly positioning and maintaining a stable axial direction.

接著就各部份作一詳細的說明，請一併參閱圖2及圖3所示。Next, each part will be described in detail, please refer to FIG. 2 and FIG. 3 together.

該光學區10位於隱形眼鏡1的中央區域為校正視力的主要區域，可為球面、非球面、雙曲面等，依需求而設計。該周圍區11為圍繞於該光學區10周圍的非光學部份透鏡。在本實施例中該周圍區11亦排除鏡片之邊緣區12。邊緣區12是相對鏡片之幾何中心的最外側部份，一般而言，邊緣區12寛度約0.2mm~2mm。該隱形眼鏡1還包括一前曲面13及一後曲面14。該前曲面13為前凸弧形曲面，該後曲面14為後凹弧形曲面，該前曲面13與後曲面14之間的區域為隱形眼鏡1的主體，其中該第一穩區20及第二穩定區30是位於該前曲面13處。The optical zone 10 is located in the central area of the contact lens 1 and is the main area for correcting vision, which can be spherical, aspherical, hyperboloid, etc., and can be designed according to requirements. The surrounding area 11 is a non-optical part of the lens surrounding the optical area 10 . In this embodiment, the peripheral region 11 also excludes the edge region 12 of the lens. The edge region 12 is the outermost part relative to the geometric center of the lens. Generally speaking, the edge region 12 has a width of about 0.2 mm to 2 mm. The contact lens 1 further includes a front curved surface 13 and a back curved surface 14 . The front curved surface 13 is a convex curved curved surface, the back curved surface 14 is a concave curved curved surface, and the area between the front curved surface 13 and the back curved surface 14 is the main body of the contact lens 1 , wherein the first stable area 20 and the first stable area 20 and the second curved surface are The second stabilization zone 30 is located at the front curved surface 13 .

第一穩定區20位於該周圍區10的部份區域內且對應該光學區10的上下位置，此區域厚度不同於該周圍區11的平均厚度。本發明中鏡片厚度的量測點係以鏡片之前（或物側）表面與後（或目側）表面之間沿正交於後表面之方向的距離。在本發明中第一穩定區20包括相鄰的一凹區21及一凸區22。該凹區21是此區域厚度較該周圍區11其他區域為薄，分佈方式是由該區內厚度最低的谷點採線性或非線性朝外圍區域遞增。該凸區122是此區域厚度較該周圍區11其他區域為厚，分佈方式是由該區內厚度最高的峰點採線性或非線性朝外圍區域遞減。在本實施中由該凹區121與該凸區122所構成的該第一穩定區12且其分佈區域呈彎月形或長條弧形。該凸區122的位置較該凹區121更靠近鏡片的幾何中心，藉此能降低該凸區121的凸起厚度，避免透氧量降低及影響配戴舒適感。The first stable region 20 is located in a part of the surrounding region 10 and corresponds to the upper and lower positions of the optical region 10 , and the thickness of this region is different from the average thickness of the surrounding region 11 . The measurement point of the lens thickness in the present invention is the distance between the front (or object side) surface and the back (or eye side) surface of the lens along the direction orthogonal to the back surface. In the present invention, the first stable region 20 includes a concave region 21 and a convex region 22 which are adjacent to each other. The thickness of the concave region 21 is thinner than other regions of the surrounding region 11 , and the distribution method is to increase linearly or non-linearly from the valley point with the lowest thickness in the region toward the outer region. The thickness of the convex region 122 is thicker than other regions in the surrounding region 11 , and the distribution method is that the thickness decreases linearly or non-linearly from the peak point with the highest thickness in the region toward the surrounding region. In this embodiment, the first stable region 12 formed by the concave region 121 and the convex region 122 has a meniscus shape or a long arc shape in its distribution area. The position of the convex area 122 is closer to the geometric center of the lens than the concave area 121 , thereby reducing the convex thickness of the convex area 121 , preventing the decrease of oxygen permeability and affecting the wearing comfort.

在本實施例中，該凹區121厚度介於0.05mm與0.2mm之間，最佳厚度介於為0.10mm與0.15mm之間。該凹區121厚度最低的谷點距離鏡片的幾何中心約6.2mm至5.0mm，較佳距離為6.0mm至5.2mm。該凸區122厚度介於0.2mm至0.4mm之間，最佳厚度介於為0.25mm至0.35mm之間。該凸區122厚度最高的峰點距離鏡片的幾何中心約5.0mm至4.2mm，較佳距離為4.8mm至4.4mm。該第一穩定區20分佈角度θ1為介於90度與140度之間，該角度θ1較佳值為100度至120度。In this embodiment, the thickness of the concave region 121 is between 0.05mm and 0.2mm, and the optimum thickness is between 0.10mm and 0.15mm. The valley point with the lowest thickness of the concave area 121 is about 6.2 mm to 5.0 mm away from the geometric center of the lens, and the preferred distance is 6.0 mm to 5.2 mm. The thickness of the convex region 122 is between 0.2 mm and 0.4 mm, and the optimum thickness is between 0.25 mm and 0.35 mm. The peak point of the highest thickness of the convex area 122 is about 5.0mm to 4.2mm away from the geometric center of the lens, and the preferred distance is 4.8mm to 4.4mm. The distribution angle θ1 of the first stable region 20 is between 90 degrees and 140 degrees, and the preferred value of the angle θ1 is 100 degrees to 120 degrees.

該第二穩定區30位於該周圍區11的部份區域且對應於該光學區10的左右位置，此區域厚度大於該周圍區11的平均厚度。第二穩定區30包括一厚區31。該厚區31是此區域厚度對於該周圍區11其他區域厚。該厚區31分佈方式為自該區域內厚度最高的峰點採線性或非線性朝該外圍區域遞減。在本實施例中，該第二穩定區31分佈區域形狀呈圓形、橢圓形、彎弧形。The second stable area 30 is located in a part of the surrounding area 11 and corresponds to the left and right positions of the optical area 10 , and the thickness of this area is greater than the average thickness of the surrounding area 11 . The second stabilization region 30 includes a thick region 31 . The thick region 31 is this region thicker than the other regions of the surrounding region 11 . The thick region 31 is distributed in a linear or non-linear manner from the peak point with the highest thickness in the region to decrease toward the peripheral region. In this embodiment, the shape of the distribution area of the second stable zone 31 is a circle, an ellipse, or a curved arc.

在本實施例中，該厚區31厚度介於0.25mm至0.45mm之間，最佳厚度為0.3mm至0.38mm之間。該厚區31厚度最高的峰點距離鏡片的幾何中心約4.5mm至6.5mm，較佳距離為5.0mm至6.0mm。該第二穩定區31分佈角度θ2介於20度與60度之間，該角度θ2較佳值為25度至50度。In this embodiment, the thickness of the thick region 31 is between 0.25mm and 0.45mm, and the optimum thickness is between 0.3mm and 0.38mm. The maximum thickness of the thick region 31 is about 4.5mm to 6.5mm away from the geometric center of the lens, preferably 5.0mm to 6.0mm. The distribution angle θ2 of the second stable region 31 is between 20 degrees and 60 degrees, and the preferred value of the angle θ2 is 25 degrees to 50 degrees.

本發明之鏡片可採用適用於製造眼用鏡片，包括但不限於一般眼鏡、隱形眼鏡及眼內鏡片之鏡片形成材料製作。可用於製作軟式隱形眼鏡之材料包括但不限於：矽彈性體、含矽大分子單體、水凝膠、含矽水凝膠等等及其組合。更佳為表面為矽氧烷或含有矽氧烷官能性，包括但不限於，聚二甲基矽氧烷大分子單體、甲基丙烯醯氧丙基聚烷基矽氧烷及其混合物、矽酮水凝膠或水凝膠。The lenses of the present invention can be made of lens-forming materials suitable for manufacturing ophthalmic lenses, including but not limited to general spectacles, contact lenses and intraocular lenses. Materials that can be used to make soft contact lenses include, but are not limited to, silicon elastomers, silicon-containing macromers, hydrogels, silicon-containing hydrogels, and the like, and combinations thereof. More preferably the surface is siloxane or contains siloxane functionality including, but not limited to, polydimethylsiloxane macromers, methacryloyloxypropyl polyalkylsiloxanes and mixtures thereof, Silicone hydrogel or hydrogel.

接著，如圖4、圖5及圖6所示，為本發明隱形眼鏡1配戴於眼睛4處之示意圖。眼睛4分別具有一上眼瞼41及一下眼瞼42。當隱形眼鏡1配載於眼睛4，隱形眼鏡1與眼球43之間會存在一層均勻的淚液，當該上眼瞼41與該下眼瞼42與隱形眼鏡1接觸時施加一均勻壓力，所施加的壓力構成作用於隱形眼鏡1上的力矩，此力矩會使得隱形眼鏡1於該眼球43上旋轉移動。如圖4所示，當隱形眼鏡1初次配戴於眼球43上，所在的角度及位置可能不正確，例如偏離散光軸位，當眨眼時，該上眼瞼41與相對位置之該第一穩定區20及第二穩定區30的兩個凸出位置接觸，該下眼瞼42也與相對位置之該第一穩定區20及第二穩定區30的兩個凸出位置接觸，所形成的力矩將使該隱形眼鏡1依特定方向轉動如逆時針(或順時針)，進而定位至正確位置，如圖5及圖6。Next, as shown in FIG. 4 , FIG. 5 and FIG. 6 , it is a schematic diagram of the contact lens 1 of the present invention being worn on the eye 4 . The eyes 4 have an upper eyelid 41 and a lower eyelid 42, respectively. When the contact lens 1 is mounted on the eye 4, there will be a layer of uniform tear fluid between the contact lens 1 and the eyeball 43. When the upper eyelid 41 and the lower eyelid 42 are in contact with the contact lens 1, a uniform pressure is applied, and the applied pressure It constitutes a moment acting on the contact lens 1 , and the moment makes the contact lens 1 rotate and move on the eyeball 43 . As shown in FIG. 4 , when the contact lens 1 is worn on the eyeball 43 for the first time, the angle and position may be incorrect, such as deviating from the axis of astigmatism. When blinking, the upper eyelid 41 and the relative position of the first stable area 20 and the two protruding positions of the second stable area 30 are in contact, and the lower eyelid 42 is also in contact with the two protruding positions of the first stable area 20 and the second stable area 30 in opposite positions, and the resulting moment will make The contact lens 1 is rotated in a specific direction, such as counterclockwise (or clockwise), and then positioned to the correct position, as shown in FIG. 5 and FIG. 6 .

如圖5所示，平時眼睛張開時，該上眼瞼41與該下眼瞼42通過及擠壓該第一穩壓區20，達到短軸水平穩定作用。眼睛正常觀看時能隨時穩定水平之作用。當躺臥時亦可達到及維持一定之軸位水準。As shown in FIG. 5 , when the eyes are usually opened, the upper eyelid 41 and the lower eyelid 42 pass through and squeeze the first voltage stabilization region 20 to achieve short-axis horizontal stabilization. The eyes can stabilize the level at any time during normal viewing. A certain axial level can also be achieved and maintained when lying down.

如圖6所示，當眼睛閉合時，該上眼瞼41與該下眼瞼42通過該第二穩定區30，瞬間擠壓此區讓左右長軸定位，可達到更精準之軸向定位。As shown in FIG. 6 , when the eyes are closed, the upper eyelid 41 and the lower eyelid 42 pass through the second stable area 30 and squeeze this area instantly to position the left and right long axes, which can achieve more precise axial positioning.

綜合以上所述，本發明隱形眼鏡由於是利用凹區21及凸區22構成第一穩定區20，且因凹區21的關係降低該凸區22所需凸出的高度，進而避免影響透氧量，而且此設計也能縮小該第二穩定區30之凸出穩定結構面積，對增加透氧量、舒適感皆有幫助。另外該第一穩定區20及該第二穩定區30形成兩個凸出定位點，初次配戴可由眨眼時可因上眼瞼41、下眼瞼42同時擠壓而瞬間使隱形眼鏡轉向定位。平常亦由可第一穩定區20及第二穩定區30維持其定向，極具市場競爭力，符合專利申請之要件。Based on the above, the contact lens of the present invention utilizes the concave area 21 and the convex area 22 to form the first stable area 20, and reduces the height of the convex area 22 due to the relationship of the concave area 21, thereby avoiding affecting the oxygen permeability Moreover, this design can also reduce the protruding stabilizing structure area of the second stabilizing region 30, which is helpful for increasing the oxygen permeability and comfort. In addition, the first stabilizing area 20 and the second stabilizing area 30 form two protruding positioning points, and the contact lens can be instantly turned and positioned due to the simultaneous extrusion of the upper eyelid 41 and the lower eyelid 42 during the initial wearing. Orientation is usually maintained by the first stabilization zone 20 and the second stabilization zone 30, which is highly competitive in the market and meets the requirements for patent application.

以上所述者，僅為本發明之較佳實施例而已，並非用來限定本發明實施例之範圍。即凡依本發明申請專利範圍所作的均等變化及修飾，皆為本發明之專利範圍所涵蓋。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the embodiments of the present invention. That is, all equivalent changes and modifications made according to the scope of the patent application of the present invention are all covered by the patent scope of the present invention.

1:隱形眼鏡 10:光學區 11:周圍區 12:邊緣區 13:前曲面 14:後曲面 20:第一穩定區 21:凹區 22:凸區 30:第二穩定區 31:厚區 40:眼睛 41:上眼瞼 42:下眼瞼 43:眼球 θ1:角度 θ2:角度1: Contact lenses 10: Optical Zone 11: Surrounding area 12: Edge Zone 13: Front Curve 14: Back Surface 20: The first stable zone 21: concave area 22: convex area 30: Second Stability Zone 31: Thick area 40: Eyes 41: Upper eyelid 42: Lower eyelid 43: Eyeballs θ1: angle θ2: angle

圖1為本發明隱形眼鏡之平面圖。 FIG. 1 is a plan view of the contact lens of the present invention.

圖2為圖1中之AA圖剖視圖。 FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1 .

圖3為圖1中之BB圖剖視圖。 FIG. 3 is a cross-sectional view of the BB diagram in FIG. 1 .

圖4為本發明隱形眼鏡初次配戴於眼睛之示意圖。 FIG. 4 is a schematic diagram of the contact lens of the present invention being worn on the eye for the first time.

圖5為本發明隱形眼鏡透過第一穩定區進行定向的示意圖。 5 is a schematic diagram of the orientation of the contact lens of the present invention through the first stabilization zone.

圖6為本發明隱形眼鏡通過第二穩定區進行定向的示意圖。 Figure 6 is a schematic diagram of the orientation of a contact lens of the present invention through a second stabilization zone.

1:隱形眼鏡1: Contact lenses

10:光學區10: Optical Zone

11:周圍區11: Surrounding area

12:邊緣區12: Edge Zone

20:第一穩定區20: The first stable zone

21:凹區21: concave area

22:凸區22: convex area

30:第二穩定區30: Second Stability Zone

31:厚區31: Thick area

θ 1:角度θ 1: Angle

θ 2:角度θ 2: Angle

Claims (3)

一種隱形眼鏡之定位結構，包括一光學區；一周圍區，圍繞於該光學區周圍；兩組第一穩定區，位於該周圍區內且對應該光學區的上下位置，該第一穩定區包括相鄰的一凹區及一凸區，該凸區的位置較該凹區更靠近鏡片的幾何中心，該第一穩定區分佈區域呈彎月形或長條弧形其中至少一種；以及兩組第二穩定區，位於該周圍區內且對應該光學區的左右位置，該第二穩定區具有一厚區，該第二穩定區分佈區域呈圓形、橢圓形其中至少一種，該隱形眼鏡還包括一前曲面及一後曲面，該第一穩定區及該第二穩定區位於該前曲面。 A contact lens positioning structure, comprising an optical zone; a peripheral zone surrounding the optical zone; two sets of first stabilization zones located in the peripheral zone and corresponding to the upper and lower positions of the optical zone, the first stabilization zone comprising An adjacent concave area and a convex area, the position of the convex area is closer to the geometric center of the lens than the concave area, the distribution area of the first stable area is at least one of a meniscus shape or a long arc; and two groups The second stable area is located in the surrounding area and corresponds to the left and right positions of the optical area, the second stable area has a thick area, the distribution area of the second stable area is at least one of a circle and an ellipse, and the contact lens also It includes a front curved surface and a back curved surface, and the first stable area and the second stable area are located on the front curved surface. 如請求項1所述隱形眼鏡之定位結構，該凹區是此區域厚度較該周圍區其他區域為薄，分佈方式由該區內厚度最低的谷點採線性或非線性朝外圍區域遞增；該凸區是此區域厚度較該周圍區其他區域為厚，分佈方式由該區內厚度最高的峰點採線性或非線性朝外圍區域遞減。 According to the positioning structure of the contact lens of claim 1, the thickness of the concave area is thinner than that of other areas in the surrounding area, and the distribution method increases linearly or non-linearly from the valley point with the lowest thickness in the area toward the peripheral area; the The convex area is thicker than other areas in the surrounding area, and the distribution method decreases linearly or non-linearly from the peak point with the highest thickness in the area toward the peripheral area. 如請求項1所述隱形眼鏡之定位結構，該厚區是此區域厚度較該周圍區其他區域為厚，分佈方式是由該區內厚度最高的峰點採線性或非線性朝外圍區域遞減。 According to the positioning structure of the contact lens of claim 1, the thick area is that the thickness of this area is thicker than other areas in the surrounding area, and the distribution method is that the thickness decreases linearly or non-linearly from the peak point with the highest thickness in the area to the peripheral area.
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