TWI224220B - Astigmatic contact lenses of crescent moon shape, thinned at upper and lower ends, and dynamically stable - Google Patents

Abstract

An astigmatic contact lenses of crescent moon shape, thinned at upper and lower ends, and dynamically stable is disclosed, which comprises an externally convex surface and internally concave surface. The center of the astigmatic contact lenses has an optical region, the upper side of the optical region and the upper periphery side of the externally protruded surface form an upper thinned region of crescent moon shape, the lower side of the optical region and the lower periphery side of the externally protruded surface form a lower thinned region of crescent moon shape. Several horizontal positioning lines are formed respectively at the left intersection and the right intersection intersected in the left-right direction in the upper thinned region and the lower thinned region.

Description

1224220 五、發明說明（1) 【發明之領域】 本發明是有關於一種隱形眼鏡，且特別是有關於一種用 於眼鏡穩定透鏡之角度定向的新月塑上下削薄動態穩定之 散光隱形眼鏡。 ~ ~ 【先前技術之描述】 已知某些光學缺陷之校正可以經由附加非球面校正特性 (如圓柱形、雙焦點或多焦點特性）於隱形眼鏡上而實現， 使用具有這些特性之隱形眼鏡是有問題的，因為透鏡（隱 形眼鏡）必須相關於眼睛被維持於一定的角度定向才會有 效。但疋’由於眨眼（b 1 i n k i n g)以及眼臉和淚水流體移動 的影響，透鏡會在眼睛上旋轉。 被設計以維持其角度定向之透鏡典型地分為兩類，其中 一類型係使用靜態穩定以維持透鏡定向。靜態穩定方法之 例子包括稜鏡平衡（prismatic balancing)，其加厚下透 鏡邊緣’支持透鏡於下眼瞼上，於透鏡表面上形成凹陷 (depressions)或***（elevation)，以及截削透鏡邊緣。 另一類型為動態穩定透鏡，其利用眼瞼的運動以維持透 鏡疋向。動態穩定的方法包括減少透鏡外表面在兩對稱區 域之厚度’加厚在水平中央軸線處之兩個外區域（〇uter regions)，及將透鏡上之頂及底區域削薄。 已知維持透鏡定向之方法有許多缺點，其中一個缺點是 需要特殊專門的工具來生產透鏡；此外，許多方法所生產 之透鏡在配戴上非常不舒服，例如，使用削薄之方法造成 透鏡表面之尖銳連接處而使配戴者覺得不舒服。因此，克1224220 V. Description of the Invention (1) [Field of the Invention] The present invention relates to a contact lens, and more particularly, to an angularly oriented crescent plastic lens that is used for spectacles to stabilize the lens. [Description of the prior art] It is known that the correction of certain optical defects can be achieved by adding aspherical correction characteristics (such as cylindrical, bifocal or multifocal characteristics) to contact lenses. The use of contact lenses with these characteristics is Problematic because lenses (contact lenses) must be related to the eye being maintained at a certain angular orientation to be effective. But 疋 ’, due to the effects of blinking (b 1 i n k i n g) and the movement of the eye and face and tear fluid, the lens will rotate on the eye. Lenses designed to maintain their angular orientation are typically divided into two categories, one of which uses static stabilization to maintain lens orientation. Examples of static stabilization methods include prismatic balancing, which thickens the lower lens edge ' to support the lens on the lower eyelid, to form depressions or elevations on the lens surface, and to clip the lens edge. The other type is a dynamic stabilization lens, which uses the movement of the eyelid to maintain the heading of the lens. The method of dynamic stabilization includes reducing the thickness of the outer surface of the lens in two symmetrical regions, thickening the two outer regions at the horizontal central axis, and thinning the top and bottom regions on the lens. The known methods of maintaining lens orientation have many disadvantages, one of which is the need for special specialized tools to produce the lenses; moreover, the lenses produced by many methods are very uncomfortable to wear, for example, the use of thinning methods causes the lens surface The sharp connection makes the wearer feel uncomfortable. Therefore, grams

TF919522.ptd 第4頁 1224220 五、發明說明（2) 湯米之中華民國專利公告第4 2 4 1 6 8號專利案中揭示被動態 地穩定之隱形眼鏡，其可藉由提供一具有可變形狀之兩面 凸狀區域之透鏡，此透鏡的優點是可以不用任何特殊專門 的工具便能製造，且在配戴上非常舒服。 然而，上述之被動態地穩定之隱形眼鏡’其透鏡在左右 側之削薄區域與未削薄區域的差異並不明顯’即透鏡在左 右側之削薄區域的面積大於未削薄區域的面積很多，因此 透鏡厚的區域與薄的區域的差異不明顯’使得眼瞼在上下 眨動時，透鏡容易有轉動現象，所以具有散光之隱形眼鏡 在於角度定向的穩定性較低；而製造透鏡所需要的工具其 中有凸面膜仁（i n s e r t e r )與凸面膜仁載體（即習知技術所 謂之後膜段），由於凸面膜仁之兩面凸狀區域不易形成用 以對位之標記，使得凸面膜仁與凸面膜仁載體之軸線對位 不易，容易造成透鏡在製造時散光角度的偏差；並且，隱 形眼鏡無標示配戴記號，造成配戴者在配戴具有散光之隱 形眼鏡的不便。 因此本發明之目的在於提供一種新月型上下削薄動態穩 定之散光隱形眼鏡，其可提高隱形眼鏡在於角度定向的穩 疋性’使凸面膜仁與凸面膜仁載體之定位線對位容易，並 且方便配戴者在配戴具有散光之隱形眼鏡。 【發明之概述] 本發明提供一種新月型上下削薄動態穩定之散光隱形眼 鏡’其包含:外凸表面及一内凹表面，此散光隱形眼鏡的 中央具有一光學區，此光學區的上側邊與此外凸表面的上TF919522.ptd Page 4 1224220 V. Description of the invention (2) Tommy's Republic of China Patent Bulletin No. 4 2 4 1 6 8 discloses a contact lens that is dynamically stabilized. The shape of the lens on both sides of the convex area. The advantage of this lens is that it can be manufactured without any special tools, and it is very comfortable to wear. However, in the above-mentioned dynamically stabilized contact lens, the difference between the thinned area on the left and right sides of the lens and the non-thinned area is not obvious, that is, the area of the thinned area on the left and right sides of the lens is greater than the area of the unthinned area. There are many, so the difference between the thick and thin areas of the lens is not obvious. 'When the eyelid blinks up and down, the lens is prone to rotate, so contact lenses with astigmatism have low angular orientation stability; and the lens manufacturing needs Among the tools are a convex mask kernel (inserter) and a convex mask kernel carrier (the so-called later film segment of the conventional technology). Since the convex areas on the two sides of the convex mask kernel are not easy to form marks for alignment, the convex mask kernel and the convex mask The alignment of the axis of the carrier is not easy, and it is easy to cause the deviation of the astigmatism angle of the lens during manufacturing; and, the contact lens has no marking wearing mark, which causes the inconvenience of the wearer in wearing contact lenses with astigmatism. Therefore, the object of the present invention is to provide a crescent-shaped ascending and descending dynamic and stable astigmatism contact lens, which can improve the stability of the contact lens in the angle orientation, so that the alignment of the convex film kernel and the convex film kernel carrier is easy. And it is convenient for the wearer to wear contact lenses with astigmatism. [Summary of the Invention] The present invention provides a crescent-shaped ascending and descending dynamic stable astigmatism contact lens, which includes: a convex surface and a concave surface. The center of the astigmatism contact lens has an optical area. On the sides and on the convex surface

精華光學919522.ptd 第5頁 1224220Essence Optics 919522.ptd Page 5 1224220

五、發明說明（3) ^ , , , τ ™ 上削溥區，此光學區的下側邊 /、此外凸表面的下周、、'彖邊之間形成新月型之 在此上削薄區與此下削薄區左右相交之— 下削涛^六 點上’分別形成呈水平之數個定位線。 又』與 又 其中’此外凸表面的弧面係與—；面模仁的弧面相同， j散光隱形眼鏡的這些定位線係分別對應於此凸面模仁的 這些定位線；此凸面模仁的這些定位線係用以凸面 膜仁載體之這些定位線。 + 本毛明之目的在於提供一種新月塑上下削薄動熊穩定之 散光隱形眼鏡，其新月型上、下削薄區域可提高隱形眼鏡 在於角度定向的穩定性’使凸面膜仁之對位線與凸面膜仁 載體之定位線對位容易，並且利用隱形眼鏡上之對位線， 以方便配戴者配戴具有散光之隱形眼鏡。 本發明之其他目的及優點將由隨後之詳細說明及隨附之 申請專利範圍當可更加明白。 【發明之詳細說明】 圖1 A為本發明之一實施例的平面圖，圖1 B沿為圖1 A之線 1 - I所取得的水平剖面圖，圖1 C沿為圖1 A之線I I - I I所取得 的垂直剖面圖。具有動態穩定之散光隱形眼鏡1 0，其包含 一外凸表面1 2及一内凹表面1 4，散光隱形眼鏡1 0的中央具 有一光學區16，此光學區16的上側邊與外凸表面12的上周 緣邊之間形成新月型之一上削薄區2 〇，此光學區1 6的下側 邊與外凸表面1 2的下周緣邊之間形成新月型之一下削薄區 2 2 ’在上削薄區2 〇與下削薄區2 2左右相交之一左交點與一V. Description of the invention (3) ^,,, τ ™ The upper edge region, the lower side of this optical region /, and the lower periphery of the convex surface, and the crescent shape formed between this edge are thinned. The area intersects with the lower thinned area from left to right — the lower cuts ^ six points above 'form several horizontal positioning lines, respectively. You ”and“ Where the arc surface of the convex surface is the same as the arc surface of the face mold kernel, the positioning lines of the astigmatism contact lens respectively correspond to the positioning lines of the convex mold kernel; These positioning lines are used for the convex mask kernel carrier. + The purpose of this Maoming is to provide a crescent-shaped astigmatism contact lens that is thinned up and down. The crescent-shaped upper and lower thinned areas can improve the stability of the contact lens in angular orientation. It is easy to align with the positioning line of the convex film kernel carrier, and the alignment line on the contact lens is used to facilitate the wearer to wear contact lens with astigmatism. Other objects and advantages of the present invention will become clearer from the following detailed description and the scope of the accompanying patent application. [Detailed description of the invention] FIG. 1A is a plan view of an embodiment of the present invention, FIG. 1B is a horizontal sectional view taken along line 1-I of FIG. 1A, and FIG. 1C is line II of FIG. 1A -A vertical section view taken by II. The astigmatism contact lens 10 with dynamic stability includes an outer convex surface 12 and an inner concave surface 14. The center of the astigmatism contact lens 10 has an optical region 16. The upper side of the optical region 16 is convex. One of the crescent-shaped upper thinned regions 20 is formed between the upper peripheral edges of the surface 12, and one of the crescent-shaped lower-cuts is formed between the lower edge of the optical region 16 and the lower peripheral edge of the convex surface 12. Thin area 2 2 ′ Intersects the upper thinned area 2 0 with the lower thinned area 2 2 left and right.

Ϊ224220 五、發明說明（4) 右父點上，分別形成呈水平之左、右定位線2 4，在光學區 1 6的左右側邊與外凸表面丨2的左右周緣邊之間，且非上削 薄區2 0與下削薄區2 2的區域為凸狀區2 6，而此凸狀區2 6之 透鏡的厚度較上削薄區2 0與下削薄區2 2之透鏡的厚度為 厚〇 在散光隱形眼鏡1 〇的左右側分別形成呈水平之左、右定 位線24 ’其目的之一是為了使配戴者在配戴散光隱形眼鏡 1 0時，可以很快地找出配戴散光隱形眼鏡丨〇的角度，不需 配戴時去調整在眼球上的散光隱形眼鏡丨〇。另，由於在光 學區1 6的上下側邊與外凸表面1 2的上下周緣邊之間所分別 形成的新月型之上削薄區2 0與下削薄區2 2，如此在散光隱 形眼鏡1 0的上下側做削薄之設計，為了使配戴散光隱形& 鏡1 0的配戴者’其在眼臉眨動時不會造成配戴者的眼睛不 適感或異物感。又，在散光隱形眼鏡10左右側之凸狀區26 與上削薄區2 0與下削薄區2 2的差異明顯，即在散光隱形眼 鏡10左右側之凸狀區26的面積大於上削薄區2〇與下削薄區 22的面積，因此散光隱形眼鏡1〇在上下側為薄^區域:而 左右側為厚的區域，使得眼瞼在上下眨動時，散光隱形眼 鏡1 〇不會有轉動現象，所以散光隱形眼鏡丨〇在於角度定向 製造隱形眼鏡的流程大致為：凸面模仁與凹面模仁的製 作、根據凸面模仁與凹面模仁以射出成形的方式以紫作凸 面與凹面的塑膠模子、將單體（M〇nomer)注入凸面與<凹面 的塑膠模子内、以紫外線或熱風將單體進行塑化步驟、Ϊ224220 V. Description of the invention (4) On the right parent point, horizontal left and right positioning lines 24 are formed respectively, between the left and right sides of the optical area 16 and the left and right peripheral edges of the convex surface 丨 2 and The area of the upper thinned area 20 and the lower thinned area 22 is a convex area 26, and the thickness of the lens of this convex area 26 is larger than that of the lens of the upper thinned area 20 and the lower thinned area 22. The thickness is thick. Horizontal left and right positioning lines 24 are formed on the left and right sides of the astigmatism contact lens 10 respectively. One of the purposes is to enable the wearer to quickly find the astigmatism contact lens 10 when wearing it. The angle of wearing astigmatism contact lenses is not required to adjust the astigmatism contact lenses on the eyeball when wearing. In addition, since the crescent-shaped upper thinned region 20 and the lower thinned region 22 are formed between the upper and lower sides of the optical region 16 and the upper and lower peripheral edges of the convex surface 12 respectively, it is invisible in astigmatism. The upper and lower sides of the glasses 10 are designed to be thinned, so that the wearer of the astigmatism lens '10 will not cause the wearer's eye discomfort or foreign body sensation when the eyes and faces blink. Moreover, the difference between the convex areas 26 on the left and right sides of the astigmatic contact lens 10 and the upper thinned area 20 and the lower thinned area 22 is obvious. That is, the area of the convex areas 26 on the left and right sides of the astigmatic contact lens 10 is larger than that of the upper cut. The area of the thin area 20 and the lower thinned area 22, so the astigmatism contact lens 10 is a thin area on the upper and lower sides: and the left and right sides are thick areas, so that when the eyelid blinks up and down, the astigmatism contact lens 1 〇 does not There is a rotation phenomenon, so astigmatism contact lenses 丨 〇 The process of manufacturing contact lenses by angle orientation is roughly: the production of convex molds and concave molds, according to the convex molds and concave molds, the convex and concave surfaces are purple. Plastic molds, injecting monomers (monomer) into convex and < concave plastic molds, plasticizing the monomers with ultraviolet or hot air,

TF919522.ptd 第7頁 1224220 五、發明說明（5) 出塑化後的鏡片、檢查鏡片、對鏡片進行水化步驟、以及 包裝鏡片等步驟。 根據上述，要做出具有新月塑之上下削薄的散光隱形眼 鏡，就必須製作具有新月型之上下削薄弧面的凸面模仁，如 圖2為本發明用以鑄模隱形眼鏡之模組件的示意圖所示。 在圖2中，凹面模仁5〇是安裝於凹面模仁載體52之中， 在凹面模仁載體52相對兩側上方刻有對位線54，對於散光 之光學角度的調整可設計於凹面模仁5 0的弧面上，以做出 具有矯正散光的隱形眼鏡；凸面模仁5 6是安裝於凸面模仁 載體5 8之中，在凸面模仁載體5 8相對兩側上方刻有對位線 6 0，圖1 A中之外凸表面1 2的弧面是與凸面模仁5 6的弧面相 同，即外凸表面1 2的光學區1 6對應於凸面模仁5 6的光學區 6 2，外凸表面1 2的上削薄區2 0與下削薄區2 2分別對應於凸 面模仁5 6的上削薄區（未繪示）與下削薄區6 4，外凸表面1 2 的定位線2 4分別對應於凸面模仁5 6的定位線6 6。 根據上述，由於凸面模仁5 6之新月型上下削薄的設計， 在上下對稱之上削薄區與下削薄區6 4的左右交點，其可以 容易定出定位線6 6的位置；且凸面模仁5 6在左右側之凸狀 區6 8的面積足以刻出明顯的定位線6 6，因此，凸面模仁5 6 之定位線6 6可以报容易地對準凸面膜仁載體5 8之定位線 60，當凸面膜仁載體58的定位線6〇與凹面膜仁載體52的定 位線5 4對準後，便能製造出光學角度精準的散光隱形眼 鏡。 本發明之優點係在散光隱形眼鏡的左右側分別形成呈水TF919522.ptd Page 7 1224220 V. Description of the invention (5) The steps of plasticizing the lens, inspecting the lens, hydrating the lens, and packaging the lens. According to the above, to make astigmatism contact lenses with a crescent-shaped upper and lower cut, it is necessary to make a convex mold with a crescent-shaped upper and lower cut curved surface. Figure 2 is a mold for molding contact lenses according to the present invention. The schematic of the component is shown. In FIG. 2, the concave mold core 50 is installed in the concave mold core carrier 52, and the alignment lines 54 are engraved on the opposite sides of the concave mold core carrier 52. The adjustment of the optical angle of the astigmatism can be designed on the concave mold The curved surface of the core 50 is used to make contact lenses with corrected astigmatism; the convex mold core 56 is installed in the convex mold core carrier 5 8, and the alignment is engraved on the opposite sides of the convex mold core carrier 5 8. Line 60, the arc surface of the convex surface 12 in FIG. 1A is the same as that of the convex mold core 56, that is, the optical region 16 of the convex surface 12 corresponds to the optical region of the convex mold core 56. 6 2, the upper thinned area 2 0 and the lower thinned area 2 2 of the convex surface 1 2 correspond to the upper thinned area (not shown) and the lower thinned area 6 4 of the convex mold core 5 6, respectively. The positioning lines 2 4 of the surface 1 2 respectively correspond to the positioning lines 6 6 of the convex mold core 5 6. According to the above, due to the crescent-shaped upper and lower thinning design of the convex mold core 6 6, the left and right intersections of the upper thinned area and the lower thinned area 64 4 on the upper and lower symmetry can easily determine the position of the positioning line 66; Moreover, the area of the convex areas 6 8 on the left and right sides of the convex mold core 6 is sufficient to engrav the obvious positioning lines 6 6. Therefore, the positioning lines 6 6 of the convex mold core 5 6 can be easily aligned with the convex film kernel carrier 5. The positioning line 60 of 8 is aligned with the positioning line 60 of the convex film kernel carrier 58 and the positioning line 54 of the concave film kernel carrier 52, and astigmatism contact lenses with accurate optical angles can be manufactured. The advantage of the present invention is that water is formed on the left and right sides of the astigmatism contact lens, respectively.

精華光學919522. ptd 第8頁 1224220 五、發明說明（6) 平之左、右定位線，可以使配戴者很快地找出配戴散光隱 形眼鏡的角度’不需調整在眼球上的散光隱形眼鏡。 本發明之另一優點係在散光隱形眼鏡的上下側做新月型 削薄之設計，使配戴散光隱形眼鏡的配戴者不會有眼睛不 適感或異物感。 本發明之又一優點係在散光隱形眼鏡左右側之凸狀區與 上削薄區與下削薄區的差異明顯，使得眼瞼在上下眨動 時，散光隱形眼鏡不會有轉動現象，所以散光隱形眼鏡在 於角度定向有很高的穩定性。 本發 薄的設 之定位 面膜仁 能製造 本發 特定之 定，而 相等之 【元件 明之再一俊點係由於凸面模仁之新月型上下對稱削 計，可以容易定出定位線的位置，因此，凸面模仁 線可以很容易地對準凸面肢^ ^ ^ ^ Α 4干ϋ曲膜仁載體之定位線，當凸 載體的定位線與凹面膜彳-._ k + u α ^ — 膘仁載體的定位線對準後，便 出光子角度精準的散光隱形眼鏡。 明可在不離開本發明之掉& 劍千ϋ“日Γ: 精砷及基本特徵下作成各種 例不。本發明之範圍為由 並非由上述說明所限制，^ t Τ明寻7^靶圍所限 ^ ^ X 所有與申請專利範圍咅義 變化均應包含於本發明中。 月寸心祀固心我 編號之說明】 10 散光隱形眼鏡 12 外凸表面 14 内凹表面 16，62 光學區 20 上削薄區Essence optics 919522. ptd Page 8 1224220 V. Description of the invention (6) The left and right positioning lines of the flat can enable the wearer to quickly find the angle of the astigmatism contact lens without adjusting the astigmatism on the eyeball Contact lenses. Another advantage of the present invention is that the crescent-shaped thinned design is made on the upper and lower sides of the astigmatism contact lens, so that the wearer of the astigmatism contact lens will not have an eye discomfort or foreign body sensation. Another advantage of the invention is that the difference between the convex area and the upper and lower thinned areas on the left and right sides of the astigmatism contact lens is obvious, so that when the eyelid blinks up and down, the astigmatism contact lens does not rotate, so astigmatism Contact lenses are highly stable in angular orientation. The thin mask of the positioning mask can make specific specifications of the hair, and the equivalent [element of the next bright spot is due to the crescent-shaped up and down symmetrical cutting of the convex mold, which can easily determine the position of the positioning line, so The convex mold kernel line can be easily aligned with the convex limbs ^ ^ ^ ^ Α 4 The positioning line of the curved film kernel carrier, when the positioning line of the convex carrier and the concave film 彳 -._ k + u α ^ — 膘 仁After the positioning line of the carrier is aligned, the astigmatism contact lens with accurate photon angle is produced. It is possible to make various examples without departing from the present invention & Jian Qianϋ "日 Γ: refined arsenic and basic features. The scope of the present invention is not limited by the above description, ^ t Τ 明 寻 7 ^ Target Limitations ^ ^ X All changes in meaning to the scope of the patent application should be included in the present invention. Explanation of the number of the moon-inch heart and the heart] 10 Astigmatism contact lenses 12 Outer convex surface 14 Inner concave surface 16, 62 Optical zone 20 Upper thinned area

1224220 24 ， 54 ， 60 ， 66 五、發明說明（7) 22 ，64 26，68 50 52 56 58 下削薄區 定位線 凸狀區 凹面模仁 凹面模仁載體 凸面模仁 凸面模仁載體1224220 24, 54, 60, 66 V. Description of the invention (7) 22, 64 26, 68 50 52 56 58 Down-cut area Positioning line Convex area Concave mold core Concave mold core Convex mold core Convex mold core carrier

TF919522.ptd 第10頁 1224220 圖式簡單說明 圖1 A為本發明之一實施例的平面圖； 圖1 B沿為圖1 A之線I - I所取得的水平剖面圖； 圖1 C沿為圖1 A之線I I - I I所取得的垂直剖面圖；以及 圖2為本發明用以鑄模隱形眼鏡之模組件的示意圖。TF919522.ptd Page 10 1224220 Brief description of the drawings Figure 1 A is a plan view of an embodiment of the present invention; Figure 1 B is a horizontal cross-sectional view taken along line I-I of Figure 1 A; Figure 1 C is a diagram 1 is a vertical cross-sectional view taken along line A-II; and FIG. 2 is a schematic diagram of a mold assembly for molding contact lenses according to the present invention.

TF919522.ptd 第11頁TF919522.ptd Page 11

Claims (1)

1224220 六、申請專利範圍 1. 一種新月型上下削薄動態穩定之散光隱形眼鏡，其包 含一外凸表面及一内凹表面，該之散光隱形眼鏡的中央具 有一光學區，該光學區的上側邊與該外凸表面的上周緣邊 之間形成新月型之一上削薄區，該光學區的下側邊與該外 凸表面的下周緣邊之間形成新月型之一下削薄區，在該上 削薄區與該下削薄區左右相交之一左交點與一右交點上， 分別形成呈水平之複數個定位線。 2. 如申請專利範圍第1項所述之新月型上下削薄動態穩 定之散光隱形眼鏡，其中，該外凸表面的弧面係與一凸面 模仁的弧面相同，該散光隱形眼鏡之該些定位線係分別對 應於該凸面模仁之該些定位線。 3. 如申請專利範圍第2項所述之新月型上下削薄動態穩 定之散光隱形眼鏡，其中，該凸面模仁之該些定位線係用 以對準一凸面膜仁載體之該些定位線。1224220 VI. Scope of patent application 1. A crescent-shaped ascending and descending dynamic stable astigmatism contact lens, which includes an outer convex surface and an inner concave surface. The center of the astigmatism contact lens has an optical area. A crescent-shaped upper thinned area is formed between the upper side edge and the upper peripheral edge of the convex surface, and a crescent-shaped one is formed between the lower side edge of the optical area and the lower peripheral edge of the convex surface. The thinned area forms a plurality of horizontal positioning lines on a left intersection and a right intersection of the upper thinned area and the lower thinned area which intersect left and right, respectively. 2. The crescent-shaped up-and-down thinning dynamic stable astigmatism contact lens as described in item 1 of the scope of the patent application, wherein the convex surface of the convex surface is the same as the convex surface of a convex mold. The positioning lines correspond to the positioning lines of the convex mold core, respectively. 3. The crescent-shaped up and down thinned dynamic stable astigmatism contact lenses as described in item 2 of the scope of patent application, wherein the positioning lines of the convex mold core are used to align the positioning lines of a convex film kernel carrier. . TF919522.ptd 第12頁TF919522.ptd Page 12