TWI848651B - Stable structure of contact lens and design method thereof - Google Patents

Abstract

The present invention relates to a stabilizing structure of a contact lens and a design method thereof. The contact lens comprises a central optical zone, a peripheral positioning zone surrounding the outside of the central optical zone, and an arc zone surrounding the outside of the peripheral positioning zone. The contact lens is axially rotated along the outside of the central optical zone, and at least one or more preset thickness zones are sequentially obtained on the surface of the peripheral positioning zone. The preset thickness area is set on the upper surface, and multiple preset thickness values are obtained in the peripheral positioning area. Then, according to the multiple preset thickness values, the thickness in the peripheral positioning area can be made to meet the preset thickness values, and a surface with at least one or more different thicknesses can be formed in the peripheral positioning area to form a stable structure for contact lens, so as to achieve the purpose of forming a stable fixed position and not easy to deviate when wearing contact lens.

Description

Stable structure of contact lens and its design method

The present invention provides a stable structure of a contact lens and a design method thereof, in particular, a stable structure design for a contact lens for stable wearing by means of different thicknesses in a peripheral positioning zone, wherein at least one or more preset thickness areas and preset thickness values are sequentially obtained in the peripheral positioning zone by rotating the peripheral positioning zone of the contact lens along the outer axis of the central optical zone, so as to form at least one or more front surfaces of different thicknesses in the peripheral positioning zone, so as to achieve the purpose of stable wearing and not easy to deviate.

According to the research and development and innovation of various electronic and electrical products, people have been brought a lot of convenience in their daily life and work. In particular, the emergence of a large number of electronic products has led to the popularization of communication and Internet applications, so that many people are immersed in the use of electronic products and use them for a long time. Whether they are office workers, students or middle-aged and elderly people, the scope of coverage is also quite wide, which has led to the phenomenon of "head-down tribe". As a result, many people's eyesight loss and damage are becoming more and more serious, and the number of myopic people is also relatively increasing.

Furthermore, the reason why people develop myopia (also known as short-sightedness) is that the light bending ability of the eye does not match the length of the eye. It may be caused by an excessively long eye axis or a too steep corneal curvature. When the total focal length of the eye is too high or too strong, the light from the distant object will be focused in front of the retina, causing the image point of the object to fall in front of the retina, resulting in blurred vision. Therefore, in order to correct myopia, it is necessary to reduce the light bending ability of the eye. Since the light bending ability of the cornea accounts for about 80% of the entire eye, it is only necessary to reduce the refractive power of the cornea to achieve the effect of correcting myopia.

The main methods for correcting refractive errors include wearing glasses, wearing contact lenses, corneal myopia surgery or wearing orthokeratology lenses. However, many people choose to wear contact lenses to correct their vision in order to facilitate their daily life. However, most people currently wear contact lenses with their eyes closed. Contact lenses are directly attached to the outside of the cornea of the eyeball. However, contact lenses are very light, thin, and small. Wearing them outside the cornea of the eyeball can easily cause the contact lens to slide on the eyeball, or to detach from the eyeball or fall off due to eyeball movement or eyelid blinking or shaking. It is very unstable when worn and urgently needs to be improved.

Therefore, how to solve the current problems and troubles of unstable and easily dislocated contact lenses when worn, as well as the troubles and defects of contact lenses sliding and shifting as the eyeballs rotate, is the direction that the relevant manufacturers in this industry are eager to study and improve.

Therefore, in view of the above problems and deficiencies, the inventor collected relevant information, evaluated and considered various aspects, and used his many years of experience in this industry to continuously create and modify, and finally designed the invention patent of the stable structure of this contact lens and its design method.

The main purpose of the present invention is that the contact lens includes a central optical zone, a peripheral positioning zone surrounding the outside of the central optical zone, and an arc zone surrounding the outside of the peripheral positioning zone, and rotates axially around the outside of the central optical zone, and sequentially obtains at least one or more preset thickness zones in the peripheral positioning zone, and obtains multiple preset thicknesses in the peripheral positioning zone according to the preset at least one or more thickness zones. Values, then according to multiple predetermined thickness values, the thickness in the peripheral positioning area can be made to meet the predetermined thickness values, that is, a surface with at least one or more different thicknesses can be formed in the peripheral positioning area, and a stable structure for contact lens can be made, so as to achieve the purpose of forming a stable fixed position and not easy to deviate when wearing contact lens, and not easy to slide and displace with the rotation of the eyeball, and has the effect of stabilizing the contact lens.

，進 行計算，其中該R₀為該中央光學區的該最高點之曲率，該p=1-e²，該e為離心率，y為中央光學區之半徑；而該中央光學區之邊緣b(bordering)〔與該周邊定位區銜接的圓周邊緣〕，為可由隱形眼鏡鏡片直徑與邊緣曲率進行回推計算，則隱形眼鏡鏡片係可沿中央光學區外部呈軸向順時針或逆時針旋轉，並由中央光學區往外至邊弧區之間的該周邊定位區取得預設至少一個或一個以上之厚度區域；該周邊定位區，其表面的該預設至少一個或一個以上厚度區域的不同厚度環形厚度曲線位置，其計算之方式為該預設至少一個或一個以上厚度區域的角度與厚度之該函數z=f(θ)，即該函數f(θ)中任何一個點a符合方程式(二)： lim _θ→a+ f(θ)=f(a)且lim _θ→a- f(θ)=f(a)，其中該函數z可為任意的函數z=f(θ)；則該函數z，係供作為計算該周邊定位區的該表面之該預設至少一個或一個以上厚度區域的不同厚度之非球面方程式該函數z：

；另，或可藉由方程 式(三)：

，作為計算該周邊定位區的該至少一個 或一個以上厚度區域的曲面方程式，其中

，該

為正 交因子，

表示一單位正交圓函數，用以表示此多項式是具有歸一正交 特性；或者該隱形眼鏡鏡片可沿中央光學區外部軸向順時針或逆時針旋轉，再由邊弧區向內至中央光學區之間的周邊定位區取得預設至少一個或一個以上之厚度區域。 Another object of the present invention is that the surface of the contact lens (which may be the front surface) can be rotated clockwise or counterclockwise along the outer axis of the central optical zone, and at least one or more preset thickness areas are sequentially obtained in the clockwise or counterclockwise direction in the peripheral positioning area to form at least one or more regular or irregular surfaces with different thicknesses; and the central optical zone is designed in a curvature of one or more segments, and the highest point distance (Sag) of the central optical zone is calculated by equation (1):

, where R ₀ is the curvature of the highest point of the central optical zone, and p = 1-e ² , e is the eccentricity, y is the radius of the central optical zone; and the edge b (bordering) of the central optical zone (the circumferential edge connected to the peripheral positioning zone) can be calculated by back-calculating the contact lens diameter and the edge curvature. The contact lens can be rotated clockwise or counterclockwise along the axis outside the central optical zone, and obtain at least one or more preset thickness areas from the central optical zone to the peripheral positioning zone between the arc zone; the position of the different thickness annular thickness curves of the preset at least one or more thickness areas on the surface of the peripheral positioning zone is calculated by the function z=f( θ ) of the angle and thickness of the preset at least one or more thickness areas, that is, the function f( θ ) satisfies equation (ii): lim _{θ →a+} f( θ )=f(a) and lim _{θ →a-} f( θ )=f(a), wherein the function z can be any function z=f(θ); then the function z is used as an aspheric equation for calculating the different thicknesses of the preset at least one or more thickness regions of the surface of the peripheral positioning area:

; Alternatively, it can be obtained by using equation (3):

, as the surface equation for calculating the at least one or more thickness regions of the peripheral positioning area, wherein

, the

is the orthogonal factor,

A unit orthogonal circular function is used to indicate that the polynomial has a reciprocal orthogonal characteristic; or the contact lens can be rotated clockwise or counterclockwise along the outer axis of the central optical zone, and then obtain at least one or more preset thickness areas from the edge arc area inward to the peripheral positioning area between the central optical zone.

Another object of the present invention is that the preset at least one or more thickness regions located in the peripheral positioning area can be rotated clockwise or counterclockwise along the axial direction of the outer side of the central optical area in a sinusoidal, sawtooth, trapezoidal or free curve manner to obtain the preset at least one or more thickness regions.

1: Contact lens

11: Central Optical District

12: Peripheral positioning area

121: Thickness area

13: Side arc area

14: Surface

[Figure 1] is a curve diagram of the contact lens design of the first embodiment of the present invention.

[Figure 2] is a schematic plan view of the contact lens of the first embodiment of the present invention.

[Figure 3] is a curve diagram of the contact lens design of the second embodiment of the present invention.

[Figure 4] is a schematic plan view of the contact lens of the second embodiment of the present invention.

[Figure 5] is a curve diagram of the contact lens design of the third embodiment of the present invention.

[Figure 6] is a schematic plan view of the contact lens of the third embodiment of the present invention.

[Figure 7] is a curve diagram of the contact lens design of the fourth embodiment of the present invention.

[Figure 8] is a schematic plan view of the contact lens of the fourth embodiment of the present invention.

[Figure 9] is a partial side view of the contact lens of the present invention.

[Figure 10] is a schematic diagram of the peripheral positioning area of the contact lens of the present invention.

[Figure 11] is a curve diagram of the contact lens design of the fifth embodiment of the present invention.

[Figure 12] is a schematic plan view of the contact lens of the fifth embodiment of the present invention.

In order to achieve the above-mentioned purpose and effect, the technical means and structure, implementation method, etc. adopted by the present invention are described in detail in the following figure for the preferred embodiment of the present invention, so as to facilitate a complete understanding.

Please refer to Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10. It can be clearly seen from the figures that the stable structure of the contact lens of the present invention and its design method, the contact lens 1 includes a central optical area 11, a peripheral positioning area 12 surrounding the outside of the central optical area 11, and an arc area 13 surrounding the outside of the peripheral positioning area 12. The design method can be implemented according to the following steps, wherein:

(A01) The contact lens 1 can be axially rotated around the outside of the central optical zone 11, and sequentially obtain at least one or more preset thickness areas 121 in the peripheral positioning zone 12.

(A02) Based on the preset at least one or more thickness regions 121, a plurality of preset thickness values are obtained in the peripheral positioning region 12.

(A03) Based on multiple predetermined thickness values, the thickness of the peripheral positioning area 12 is made to meet the predetermined thickness values.

(A04) A surface 14 having at least one or more different thicknesses is formed in the peripheral positioning area 12.

(A05) is used to form a stable structure for contact lens 1.

The above-mentioned stable structure of the contact lens of the present invention is that the contact lens 1 includes a central optical area 11, a peripheral positioning area 12 and an edge arc area 13, wherein: the central optical area 11 is located at the center of the contact lens 1.

The peripheral positioning area 12 surrounds the outside of the central optical area 11.

The edge arc area 13 surrounds the outside of the peripheral positioning area 12.

The peripheral positioning area 12 axially surrounds the outside of the central optical area 11 and the inside of the edge arc area 13 to form a surface 14 having at least one or more different thicknesses.

The surface 14 of the peripheral positioning zone 12 of the contact lens 1 of the present invention may be the front surface of the peripheral positioning zone 12 (the outer surface of the contact lens 1 that does not contact the cornea of the eye), and may be rotated clockwise or counterclockwise along the outer side of the central optical zone 11, and at least one or more preset thickness regions 121 may be sequentially obtained in the peripheral positioning zone 12 along the clockwise or counterclockwise direction, so as to form at least one or more regular or irregular curved surfaces 121 of different thicknesses in the peripheral positioning zone 12. 4; and the contact lens 1 can be rotated clockwise or counterclockwise along the outside of the central optical zone 11, and obtain at least one or more preset thickness areas 121 from the central optical zone 11 to the peripheral positioning zone 12 between the side arc zones 13; or the contact lens 1 can be rotated clockwise or counterclockwise along the outside of the central optical zone 11, and then obtain at least one or more preset thickness areas 121 from the side arc zone 13 to the peripheral positioning zone 12 between the central optical zone 11.

In the contact lens 1 of the present invention, the preset at least one or more thickness regions 121 located in the peripheral positioning area 12 can be rotated clockwise or counterclockwise along the outer side of the central optical area 11 in a sinusoidal, sawtooth, trapezoidal or free curve manner to obtain the preset at least one or more thickness regions 121. Values (please refer to Figures 1, 3, 5, and 7, where: the X-axis is the angle of the contact lens [degree (°), degree], and the Y-axis is the thickness value of the preset thickness area 121 [thickness, unit: millimeter (mm)]) for making at least one or more preset thickness areas 121 at the peripheral positioning area 12 of the contact lens 1 The surface 14 is a predetermined thickness region 121 that extends along the peripheral positioning region 12 in a regular or irregular curved shape to form a predetermined arc convex shape (please refer to FIGS. 1, 3, 5, and 7 at the same time, the X and Y axes are the angle (X axis) and the thickness value (Y axis) corresponding to the position of the contact lens 1, respectively, and the units are: X axis (degrees), Y axis (mm [m m]) to increase the quality of the contact lens 1 (please refer to Figures 2, 4, 6, and 8 at the same time), so that the contact lens 1 can be stably worn on the cornea of the preset user's eye, and with the blinking of the eyelid or the sliding of the eyeball, it can ensure that the contact lens 1 is not easy to slide, deviate or move, etc., so as to achieve the purpose of easily positioning the contact lens 1 on the cornea of the eye.

，進行計算該距離〔Sag，單位：公釐(mm)〕， 其中R₀為中央光學區11的最高點(T)之曲率，p=1-e²，e為離心率，而y為中央光學區11之半徑，單位：公釐(mm)；該中央光學區11之邊 緣b(bordering)〔與周邊定位區12銜接的圓周邊緣〕，為可由隱形眼鏡鏡片1直徑與邊緣曲率進行回推計算〔此計算不為本發明之必要技術內容，故未揭示計算方式〕。 The central optical zone 11 of the contact lens 1 may be designed with a curvature of one segment or multiple segments. The highest point of the central optical zone 11 (height distance T (Sag) in millimeters (mm), please refer to FIG. 9 ) can be calculated by equation (1):

, the distance is calculated [Sag, unit: millimeter (mm)], where R ₀ is the curvature of the highest point (T) of the central optical zone 11, p=1-e ² , e is the eccentricity, and y is the radius of the central optical zone 11, unit: millimeter (mm); the edge b (bordering) of the central optical zone 11 [the circumferential edge connected to the peripheral positioning zone 12] can be back-calculated from the diameter of the contact lens 1 and the edge curvature [this calculation is not a necessary technical content of the present invention, so the calculation method is not disclosed].

When designing the peripheral positioning area 12 of the contact lens 1, it can be implemented through the following calculation steps:

(I) First determine the position of the annular thickness curve within the peripheral positioning area 12 (it can be one or more, etc.).

(ii) Determine the design of the annular thickness curve (may be one or more, etc.).

(III) Calculate the starting point of the peripheral positioning area 12 (the last point of the central optical area 11) and the last point (the starting point of the edge design).

(IV) Through more than three sets of data: the starting point of the peripheral positioning area 12 range, the thickness curve design, the end point, etc., the optimized curve can be designed in different axial directions.

(V) Repeat the above step (IV) to gradually complete the radial thickness changes from 0° to 360° within the peripheral positioning area 12.

Therefore, by implementing the above steps, the position of the annular thickness curve of different thicknesses of the preset at least one or more thickness regions 121 on the surface 14 of the peripheral positioning area 12 of the contact lens 1 of the present invention is calculated by presetting a function z=f(x) of the angle and thickness of the preset at least one or more thickness regions 121, that is, any point a in the function f(x) satisfies equation (2): lim _{θ →a+} f( θ )=f(a) and lim _{θ →a-} f( θ )=f(a), wherein the function z can be any function z=f(θ), such as: polynomial, exponential, Fourier, Gaussian, sum of sine, etc. or Weibull equations for application.

〔公釐(mm)〕。 Furthermore, the above function z can be used as a function z for calculating the aspheric surface equation of different thicknesses of at least one or more thickness regions 121 of the surface 14 of the peripheral positioning area 12:

〔Millimeter(mm)〕.

In the above-mentioned aspheric surface equation z, "C=1/R, R is the radius of curvature of the aspheric surface vertex", "k=1-e, e is the eccentricity", "when k=1, it represents a hyperboloid", "when k=-1, it represents a parabola", "0>k>-1, it represents a semi-elliptical spherical surface symmetrical about the major axis of the ellipse", "k>0, it represents a semi-elliptical spherical surface symmetrical about the minor axis of the ellipse", "k=0, it represents a spherical surface"; _A1 , _A2 , _A3 ~ _An , etc. are any point obtained on the surface 14 of the peripheral positioning area 12 [a, any point a of the above-mentioned function z=f( θ )].

，計 算出函數z=f(θ)的非球面角度(θ)，其中Q為函數z的周邊定位區12的表面14非球面上之任意一個點a〔Q(x,y)，笛卡爾座標；Q(r,θ)，極座標〕的座標位置(請同時參閱第10圖所示)，該方程式(三)為澤爾尼克(Zernike)公式之應用。 Alternatively, it can be obtained by using equation (3):

, calculate the aspheric angle (θ) of the function z=f(θ), where Q is the coordinate position of any point a on the aspheric surface 14 of the peripheral positioning area 12 of the function z〔Q(x,y), Cartesian coordinates; Q(r,θ), polar coordinates〕(please also refer to FIG. 10), and the equation (III) is an application of the Zernike formula.

By repeating the calculation of the above-mentioned aspheric equation z or equation (3), the different thickness changes of at least one or more preset thickness areas 121 presented radially from 0° to 360° in the peripheral positioning area 12 can be calculated respectively, so as to obtain the design of at least one or more preset thickness areas 121 on the surface 14 in the peripheral positioning area 12 of the contact lens 1.

One of the preferred embodiments of the present invention is to determine the design of presetting at least one or more thickness regions 121 on the surface 14 of the peripheral positioning region 12 by presetting the position of the annular thickness curve to a radius (r) = 6.8 (please refer to Figures 10, 11, and 12 at the same time. The horizontal axis in Figure 11 is x and the vertical axis is y).

公釐(mm)〕進行計算，可獲得周邊定位區12上該預 設環形厚度曲線〔半徑(r)=6.8公釐(mm)〕的起始點為(5，1.47951)，最末點則為(7.4，4.275574)〔此為參考數據，係以第10圖中所示之半徑(r)作為一般常用之預定值進行計算，並非為本案實施例之數據〕。 The design mode of the preset annular thickness curve is performed to represent the thickness variation of the peripheral positioning area 12 in different axial directions. From the function lim _{θ →a+} f( θ )=f(a), and lim _{θ →a-} f( θ )=f(a), the radius (r) of the position of the preset annular thickness curve is 6.8. The degrees of 50.001 and 49.999 are selected and substituted into the function to obtain: f(50.001)=1.005, f(49.999)=1.005. It can be determined that this function meets the definition of a continuous function. Then, through the above equation (I)〔

The starting point of the preset annular thickness curve [radius (r) = 6.8 mm] on the peripheral positioning area 12 is obtained as (5, 1.47951) and the ending point is (7.4, 4.275574) [this is reference data, which is calculated using the radius (r) shown in FIG. 10 as a generally used preset value, and is not the data of the present embodiment].

To further calculate the concept of the axes of the preset annular thickness curve, assume that the basic spherical equation is used: (xx ₀ ) ² +(yy ₀ ) ² =r ² , where (x ₀ y ₀ ) is the center of the sphere, r is the radius of the sphere, and the thickness curve design point (6.8, 3.050021) can be obtained from the thickness function. The starting point of the preset annular thickness curve is (5, 1.47951), the last point is (7.4, 4.275574), and the thickness curve design point is (6.8, 3.050021). The function (xx ₀ ) ² +(yy ₀ ) ² =r ² , wherein the variable x in the basic spherical program is 5 to 7.4 mm, and the variable y is 1.47951 to 4.275574 mm. By coordinating with the above diagrams, the design of the preset annular thickness curve is completed, and the design of at least one or more thickness regions 121 preset on the surface 14 of the peripheral positioning area 12 can be obtained [the units of the above calculation programs are all millimeters (mm)]. The numbers on the surface 14 of the peripheral positioning area 12 [please also refer to Figures 2, 4, 6, 8, and 12] are the design thickness dimensions of at least one or more thickness regions 121 preset [in the above schematic diagrams, the units in each program are all millimeters (mm)].

Furthermore, the contact lens 1 of the present invention has at least one or more preset thickness regions 121 in the peripheral positioning area 12, which can be designed according to the preset eye condition of the user, such as the same or different myopia, hyperopia, astigmatism, presbyopia or eyelid shape of the left or right eye. At least one or more preset thickness regions 121 are designed in the peripheral positioning area 12 of the contact lens 1. One or more thickness regions 121 present different or the same thickness values, which are in line with the movement of the eyeball (up, down, left, right, etc.) or the blinking action between the eyeball and the eyelid, so as to match the situation that the eyelid contacts the contact lens 1 when blinking, and it is not easy to push the contact lens 1 to slip or shift, etc., so that the contact lens 1 can be worn more stably, positioned at the cornea of the preset user's eye, and not easily deviated, so as to achieve the purpose of stable attachment and positioning at the cornea of the eye.

The above is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all simple modifications and equivalent structural changes made by using the contents of the present invention's specification and drawings should be included in the patent scope of the present invention and should be stated.

In summary, the stable structure and design method of the contact lens of the present invention can achieve its efficacy and purpose when it is actually implemented and used. Therefore, the present invention is a creation with excellent practicality. In order to meet the application requirements of invention patents, an application is filed in accordance with the law. I hope that the review committee will approve this case as soon as possible to protect the inventor's hard work. If the review committee of the Jun Bureau has any doubts, please feel free to write to give instructions. The inventor will do his best to cooperate and will be grateful for the convenience.

1: Contact lens

11: Central Optical District

12: Peripheral positioning area

121: Thickness area

13: Side arc area

14: Surface

Claims (10)

A method for designing a stable structure of a contact lens, the contact lens comprising a central optical zone, a peripheral positioning zone surrounding the central optical zone, and an arc zone surrounding the peripheral positioning zone, is implemented according to the following steps: (A01) the surface of the contact lens is axially rotated along the outside of the central optical zone, and at least one or more preset thickness zones are sequentially obtained in the peripheral positioning zone; (A02) 02) obtaining a plurality of predetermined thickness values in the peripheral positioning area according to the preset at least one or more thickness areas; (A03) producing a thickness in the peripheral positioning area that meets the predetermined thickness values according to the plurality of predetermined thickness values; (A04) forming a surface having at least one or more different thicknesses in the peripheral positioning area; and (A05) producing a stable structure of the contact lens. In the method for designing a stable structure of a contact lens as described in claim 1, the central optical zone and the side arc zone are optically designed as spherical, aspherical, astigmatic, multi-focal astigmatic or free-form surfaces, and the central optical zone is designed as a curvature of one or more segments. The highest point distance (Sag) of the central optical zone is calculated by equation (1):

[mm], where R ₀ is the curvature of the highest point of the central optical zone, p=1-e ² , e is the eccentricity, y is the radius of the central optical zone; and the edge b (bordering) of the central optical zone [the circumferential edge connected to the peripheral positioning zone] is back-calculated from the contact lens diameter and edge curvature. The method for designing a stable structure of a contact lens as described in claim 1, wherein the surface of the contact lens in steps (A01) and (A04) is the front surface, and the surface is rotated clockwise or counterclockwise along the outer axis of the central optical zone, and the preset at least one or more thickness areas are sequentially obtained along the clockwise or counterclockwise direction in the peripheral positioning zone, so as to The at least one or more regular or irregular surfaces of different thicknesses are formed. When the peripheral positioning area of the contact lens is designed, it is implemented through the following calculation steps: (i) first determine the position of the annular thickness curve in the peripheral positioning area (one or more); (ii) determine the design of the annular thickness curve (one or more); (iii) calculate the The starting point of the peripheral positioning zone (the last point of the optical zone) and the last point (the starting point of the edge design); (iv) through more than three sets of data: the starting point of the peripheral positioning zone range, the thickness curve design, the last point, etc., to design an optimized curve in different axial directions; (v) repeat the above step (iv) to gradually complete the radial thickness changes from 0° to 360° within the range of the peripheral positioning zone; the above peripheral positioning zone, the surface of the preset at least one or more thickness areas of the different thickness annular thickness curve position, the calculation method is the function z=f(x) of the angle and thickness of the preset at least one or more thickness areas, that is, any point a in the function f(x) meets the equation (ii): lim _{θ →a+} f( θ )=f(a) and lim _{θ →a-} f( θ )=f(a), wherein the function z can be any function z=f( θ ); the function z is used as an equation for calculating the different thicknesses of the preset at least one or more thickness regions of the surface of the peripheral positioning area, and a single axial thickness design including the starting point, one or more thickness design functions, and the last point is calculated through a spherical surface, an aspherical surface, and a Zelnik function:

; or by equation (3):

[mm], as the surface equation for calculating the at least one or more thickness regions of the peripheral positioning region, wherein

, the

is the orthogonal factor,

represents a unit orthogonal circular function, which is used to indicate that the polynomial has the property of being orthogonal. The method for designing a stable structure of a contact lens as described in claim 3, wherein the contact lens is rotated axially clockwise or counterclockwise outside the central optical zone, and the peripheral positioning zone from the central optical zone to the side arc zone obtains the preset at least one or more thickness zones. The method for designing a stable structure of a contact lens as described in claim 3, wherein the contact lens is rotated axially clockwise or counterclockwise outside the central optical zone, and the peripheral positioning zone from the side arc zone inward to the central optical zone obtains the preset at least one or more thickness regions. The method for designing a stable structure of a contact lens as described in claim 1, wherein the preset at least one or more thickness regions in steps (A01) and (A02) are obtained by rotating clockwise or counterclockwise in a sine wave, sawtooth, trapezoidal or free curve axially outside the central optical zone to obtain the preset at least one or more thickness regions. A stabilizing structure of a contact lens includes a central optical zone, a peripheral positioning zone and an edge arc zone, wherein: the central optical zone is located at the center of the contact lens; the peripheral positioning zone surrounds the outside of the central optical zone, and the peripheral positioning zone axially surrounds the outside of the central optical zone and the inside of the edge arc zone to form a surface with at least one or more different thicknesses; and the edge arc zone surrounds the outside of the peripheral positioning zone. The stable structure of the contact lens as described in claim 7, wherein the central optical zone and the edge arc zone are optically designed as spherical, aspherical, astigmatic, multi-focal astigmatic or free-form surfaces, and the surface of the contact lens is the front surface, and the peripheral positioning zone is rotated clockwise or counterclockwise along the outer axis of the central optical zone, and the preset at least one or more thickness areas are sequentially obtained along the clockwise or counterclockwise direction in the peripheral positioning zone to form the at least one regular or irregular surface with different thicknesses, and the central optical zone is designed in a curvature of one or more segments, and the highest point (Sag) distance of the central optical zone is calculated by equation (1):

[mm], where R ₀ is the curvature of the highest point of the central optical zone, p=1-e ² , e is the eccentricity, y is the radius of the central optical zone; and the edge b (bordering) of the central optical zone [the circumferential edge connected to the peripheral positioning zone] is back-calculated from the contact lens diameter and edge curvature. The stable structure of the contact lens as described in claim 8, wherein the contact lens rotates axially clockwise or counterclockwise outside the central optical zone, and obtains the preset at least one or more thickness areas in the peripheral positioning zone from the central optical zone to the edge arc zone. When the peripheral positioning zone of the contact lens is designed, it is implemented through the following calculation steps: (i) first determine the position of the annular thickness curve in the peripheral positioning zone (one or more); (ii) determine the design of the annular thickness curve (one or more); (iii) calculate the starting point (the last point of the central optical zone), the last point (the edge) of the peripheral positioning zone, and the thickness of the annular thickness curve. (iv) through more than three sets of data: the starting point of the peripheral positioning area, the thickness curve design, the end point, etc., to design an optimized curve in different axial directions; (v) repeating the above step (iv) to gradually complete the radial thickness changes from 0° to 360° within the range of the peripheral positioning area; then the position of the different thickness annular thickness curve of the preset at least one or more thickness areas on the surface of the above-mentioned peripheral positioning area is calculated by the function z=f(x) of the angle and thickness of the preset at least one or more thickness areas, that is, any point a in the function f(x) meets the equation (ii): lim _{θ →a+} f( θ )=f(a) and lim _{θ →a-} f( θ )=f(a), wherein the function z can be any function z=f( θ ); the function z is used as an equation for calculating the different thicknesses of the preset at least one or more thickness regions of the surface of the peripheral positioning area, and a single axial thickness design including the starting point, one or more thickness design functions, and the last point is calculated through a spherical surface, an aspherical surface, and a Zelnik function:

〔millimeter (mm)〕; or by equation (3):

[mm], as the surface equation for calculating the at least one or more thickness regions of the peripheral positioning region, wherein

, the

is the orthogonal factor,

represents a unit orthogonal circular function, which is used to indicate that the polynomial has the property of being orthogonal. The stable structure of the contact lens as described in claim 8, wherein the contact lens rotates axially clockwise or counterclockwise outside the central optical zone, and obtains the preset at least one or more thickness regions from the peripheral positioning zone inward from the side arc zone to the central optical zone.

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