TWI778797B - Contact lens and manufacturing method thereof - Google Patents

Abstract

A contact lens includes a lens body and a color ink layer. The color ink layer is embedded in the lens body and includes a plurality of color ink membrane thicknesses. The color ink membrane thicknesses are different to each other. The color ink layer includes a plurality of color ink elements, and the color ink elements include M types of areas, in which M is a natural number greater than one. The color ink layer further includes color ink membrane thicknesses from a number one color ink membrane thickness to a number 1+n color ink membrane thickness, in which n is a natural number greater than zero. These color ink membrane thicknesses and the M types of areas form M*(1+n) units of color ink concentration, and the M*(1+n) units of color ink concentration forms a multicolor pattern in the lens body.

Description

Contact lens and method of making the same

The present disclosure relates to a contact lens and a manufacturing method thereof.

In order to meet the needs of some users who do not like to wear traditional glasses with frames, contact lenses are now widely circulated in the market. In recent years, due to the strong demand for beauty and beauty, contact lenses printed with different colors and patterns have also come out one after another. In the conventional manufacturing method of contact lenses in the field, the operator performing pattern pad printing presses the transparent adhesive material (for example, the transparent dry sheet forming the lens portion of the contact lens) with a template, so as to make the adhesion The color ink on the stencil can be pad printed onto the clear adhesive to give the contact lens a pattern.

However, even the patterns of existing contact lenses can only present contrast or gradation through the difference in size and color between several colored ink elements. In addition, the prior art related to the pattern pad printing of contact lenses also has its limitations. The above limitations lead to the fact that even though the pattern can show pattern contrast through the difference in the diameter and color of the color and ink elements, other means cannot be used to make the visual contrast, hierarchy and three-dimensional effect of the pattern break through.

Therefore, how to propose a contact lens and a manufacturing method thereof that can improve the visual contrast, hierarchy and three-dimensional effect of contact lens patterns is one of the problems that the industry urgently wants to invest in research and development resources to solve.

In view of this, one objective of the present disclosure is to provide a contact lens and a manufacturing method thereof that can solve the above-mentioned problems.

In order to achieve the above objective, according to an embodiment of the present disclosure, a contact lens includes a lens body and a color ink layer. The color ink layer is embedded in the lens body and has several color ink film thicknesses. The color ink film thicknesses are different from each other. The color ink layer includes a plurality of color ink elements and includes M areas, wherein M is a natural number greater than 1, and the color ink layer further includes the first color ink film thickness to the 1+nth color ink film thickness, wherein n is a natural number greater than 0, the color ink film thickness and M types of areas form M*(1+n) unit color ink concentration, and M*(1+n) unit color ink concentration forms color patterns on the lens body.

In one or more embodiments of the present disclosure, the color ink film thickness is in the range of 4 micrometers to 316 micrometers.

In one or more embodiments of the present disclosure, the color ink elements include at least one first color ink element and at least one second color ink element, the first color ink element has a first diameter, and the second color ink element has a second color ink element. diameter.

In one or more embodiments of the present disclosure, the first diameter and the second diameter are in the range of 0.03 mm to 14 mm.

In one or more embodiments of the present disclosure, the color ink layer includes a first sublayer and a second sublayer, the first sublayer has a first color, and the second sublayer has a second color.

In one or more embodiments of the present disclosure, the first sublayer has a plurality of first color ink film thicknesses, the second sublayer has at least a second color ink film thickness, and the color ink layer is between the first sublayer and the second ink film thickness. The overlapping portion of the two sub-layers has at least a third color ink film thickness.

In one or more embodiments of the present disclosure, M*(1+n) unit color ink concentration includes at least one color ink pigment.

In one or more embodiments of the present disclosure, a method for manufacturing a contact lens includes: forming a colored ink layer on a lower mold, wherein the colored ink layer has several colored ink film thicknesses, and the colored ink film thicknesses are different from each other; An upper mold is combined with a lower mold; a transparent adhesive material is filled between the upper mold and the lower mold to cover the color ink layer; and the transparent adhesive material is cured into a lens body, so that the color ink layer is embedded in the lens body.

In one or more embodiments of the present disclosure, the method for manufacturing a contact lens further comprises: filling the lower mold with a transparent protective layer.

In one or more embodiments of the present disclosure, the step of filling the transparent protective layer into the lower mold is performed before the step of forming the colored ink layer on the lower mold, so that the colored ink layer is formed on the transparent protective layer.

In one or more embodiments of the present disclosure, the step of forming the color ink layer on the lower mold includes: filling color ink into several recesses on the template, the recesses having different depths; and pad printing the filled color ink To the lower mold, the color ink forms a color ink layer in the lower mold.

In one or more embodiments of the present disclosure, the step of forming the color ink layer on the lower mold includes: filling the first color ink into a plurality of first concave portions on the first template, wherein the first concave portions have different depths; pad printing the filled first color ink to the lower mold; filling the second color ink into a plurality of second recesses on the second template, wherein the second recesses have different depths; and pad printing the filled second The color ink is sent to the lower mold, wherein the first color ink and the second color ink form a color ink layer in the lower mold.

In one or more embodiments of the present disclosure, the colors of the first color ink and the second color ink are different.

In one or more embodiments of the present disclosure, the first color ink and the second color ink constitute the first sub-layer and the second sub-layer of the color ink layer, respectively, and the first sub-layer has several film thicknesses of the first color ink. , the second sublayer has at least a second color ink film thickness, and the color ink layer has at least a third color ink film thickness where the first sublayer and the second sublayer overlap.

To sum up, in the contact lens and the manufacturing method thereof of the present disclosure, several concave portions with different depths are engraved on a single template, so as to achieve a one-time pad printing of several colored inks with different thicknesses to the lens body. effect. In addition, in the contact lens and the manufacturing method thereof of the present disclosure, because the thicknesses of the colored ink films and the areas of the colored ink elements in the contact lens are different from each other, the pattern presented is better than that of the existing contact lenses on the market. The pattern of the glasses has a stronger contrast, layering and three-dimensional effect.

The above descriptions are only used to describe the problems to be solved by the present disclosure, the technical means for solving the problems, and their effects, etc. The specific details of the present disclosure will be introduced in detail in the following embodiments and related drawings.

Several embodiments of the present disclosure will be disclosed in the following drawings, and for the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the present disclosure. That is, in some embodiments of the present disclosure, these practical details are unnecessary. In addition, for the purpose of simplifying the drawings, some well-known structures and elements will be shown in a simple and schematic manner in the drawings. The same reference numbers will be used throughout the drawings to refer to the same or similar elements.

The detailed steps of the manufacturing method 600 of the contact lens of the present embodiment will be described in detail below. Please also use pictures 1, 2, 3, 4, 5, 6, 7 and 8 for reference.

Please refer to FIG. 1 , FIG. 2 , FIG. 3 , and FIG. 4 , which are schematic diagrams of a sequence of manufacturing the contact lens 400 using the upper mold UM and the lower mold LM according to an embodiment of the present disclosure. FIG. 6 is a flowchart of a method 600 for manufacturing a contact lens according to an embodiment of the present disclosure. The manufacturing method 600 of a contact lens includes step S601, step S602, step S603, step S604, and step S605. The operations of steps S601 to S605 will be specifically described below.

First, step S601 is performed: the color ink C is filled into several concave portions with different depths on the template. Specifically, the operator can use a device or tool (not shown. For example: oil brush, ink nozzle, etc.) with coating or ink discharge function to fill the color ink C into the template (not shown. For example: steel plate) in the recess. It should be noted that the depths of these recesses are substantially different from each other.

Next, step S602 is performed: pad printing the filled color ink C onto the lower mold LM to form a color ink layer CL. Specifically, the operator can use a pad printing tool (not shown. For example: a glue head) to dip or extract the color ink C filled in the concave portion on the surface of the pad printing tool, and then the operator moves the ink C stained with the color ink C. Print the tool to the top of the lower mold LM. Then, the operator operates the pad printing tool stained with the color ink C to press against the lower mold LM. Please refer to FIG. 1, when the pad printing tool is far away from the lower mold LM, the color ink C is attached to the lower mold LM, and the color ink C on the lower mold LM forms the color ink layer CL. As shown in FIG. 1, the color ink layer CL has several color ink film thicknesses T, and the thicknesses of these color ink film thicknesses T are different from each other.

In some embodiments, the different thicknesses of the color ink film thickness T are substantially equal to the different depths of the recesses of the template.

Next, step S603 is performed: the upper mold UM and the lower mold LM are combined. Specifically, as shown in FIG. 2 , the operator can operate the upper mold UM to press against the lower mold LM, so that the upper mold UM and the lower mold LM are combined.

Next, step S604 is performed: the transparent glue material TM is filled between the upper mold UM and the lower mold LM to cover the color ink layer CL. Specifically, the operator can use the principle of injection molding to form a molten or liquid transparent glue material TM between the upper mold UM and the lower mold LM, and the transparent glue material TM covers the color ink layer CL ( Please refer to Figure 3). Specifically, as shown in FIG. 3, the transparent adhesive material TM formed between the upper mold UM and the lower mold LM is formed into the outer shape of the lens of the contact lens. The above methods or means for forming the transparent plastic material TM between the upper mold UM and the lower mold LM are merely examples for simple description, and the present disclosure is not intended to form the transparent plastic material TM between the upper mold UM and the lower mold LM. between methods or means to limit.

In some embodiments, the Clear Adhesive™ is a silicone hydrogel. In some embodiments, the transparent glue material TM is HEMA (2-hydroxyethyl methacrylate) water glue, but the present disclosure is not limited thereto. In some embodiments, the Clear Adhesive™ can be any material capable of forming the lens portion of a contact lens.

Next, step S605 is performed: the transparent adhesive TM is cured into the lens body LB, so that the color ink layer CL is embedded in the lens body LB. Specifically, after the transparent glue material TM is filled between the upper mold UM and the lower mold LM, the operator performs a curing process on the transparent glue material TM, so that the molten or liquid transparent glue material TM can be hardened into a solid transparent glue Material TM, the solid transparent plastic material TM forms the lens body LB. Then, as shown in FIG. 4, when the upper mold UM is far away from the lower mold LM, the lens body LB is still attached to the lower mold LM, and the lens body LB and the color ink layer CL containing the color ink C embedded therein are formed to form Contact Lenses 400.

By performing steps S601 to S605 of the method 600 for manufacturing a contact lens, the contact lens 400 can be manufactured.

In some embodiments, the color ink layer CL can also be formed by directly injecting the color ink C onto the lower mold LM without passing through the template.

Please refer to Figure 5. In some embodiments, after step S601 is performed, the transparent protective layer P may be filled into the lower mold LM, and then step S602 is performed. Thereby, specifically, as shown in FIG. 5 , the colored ink layer CL is formed on the transparent protective layer P, so that the transparent protective layer P protects the colored ink layer CL, thereby manufacturing the contact lens 500 .

In some embodiments, the aforementioned transparent protective layer P may have a relatively thick thickness, so as to form a sandwich structure in which the lens body LB is covered at least above and below the color ink layer CL by executing the contact lens manufacturing method 600 . (SW structure) of the contact lens 500.

In some embodiments, the aforementioned transparent protective layer P may have a relatively thin thickness, so as to form at least the TC structure with the lens body LB both above and below the color ink layer CL by executing the contact lens manufacturing method 600 of contact lenses 500.

In some embodiments, in steps S603 and S604, the transparent plastic material TM can be filled into the lower mold LM first, so that the upper mold UM and the lower mold LM are combined, and pressed against the transparent material TM, and then step S605 is performed.

All in all, the present disclosure is not intended to limit the order of steps S601 to S605 and possible adjustments or changes thereof.

In some embodiments, the color ink film thickness T ranges from about 4 microns to about 316 microns. In some embodiments, the preferred range of the color ink film thickness T is between about 4 microns and about 40 microns. Alternatively, in some embodiments, the color ink film thickness T ranges from about 5 microns to about 37 microns.

Please refer to FIG. 7, which is a cross-sectional view of a template 700 according to an embodiment of the present disclosure. The present disclosure provides a template 700 . The template 700 has a surface 700a, and has a first recess R1, a second recess R2, and a third recess R3 recessed from the surface 700a. In some embodiments, please refer to FIG. 8 , in step S601 , the operator can fill the color ink C into the first concave portion R1 , the second concave portion R2 and the third concave portion R3 of the template 700 for subsequent operations. A color ink layer CL is formed in the middle.

In some embodiments, as shown in FIG. 7, the first recess R1 has a first depth D1 and a first width W1, the second recess R2 has a second depth D2 and a second width W2, and the third recess R3 has a third depth D3 and third width W3.

In some embodiments, as shown in FIGS. 7 and 8 , the number of the first concave portion R1 , the second concave portion R2 and the third concave portion R3 is substantially plural, but the present disclosure is not limited thereto. In some embodiments, the number of the first recessed portion R1 , the second recessed portion R2 and the third recessed portion R3 may be one, and the template 700 may have only a single recessed portion (eg, the first recessed portion R1 ). In other words, the present disclosure does not intend to limit the number of the first recesses R1 , the second recesses R2 and the third recesses R3 .

In some embodiments, the first concave portion R1 , the second concave portion R2 and the third concave portion R3 are concave from the surface 700 a of the template 700 by a laser (eg, excimer laser) engraving method, but the present disclosure Not limited to this. In some embodiments, the first recessed portion R1 , the second recessed portion R2 and the third recessed portion R3 may be formed by any engraving method or etching method that can concave the surface 700 a of the template 700 . In other words, the present disclosure is not intended to be specific to the template 700 . The method of forming the first concave portion R1, the second concave portion R2, and the third concave portion R3 on the surface 700a of the present invention is limited.

In some embodiments, the first depth D1 , the second depth D2 and the third depth D3 may be substantially different from each other, but the present disclosure is not limited thereto. In some embodiments, the first depth D1, the second depth D2, and the third depth D3 may include two depths in total (for example, the first depth D1 is the same as the second depth D2, and the third depth D3 is the same as the first depth D1 or the second depth D2 is different). This is just an example for simple description, and the present disclosure is not intended to limit this.

In some embodiments, the first depth D1, the second depth D2, and the third depth D3 are in the range of about 4 microns to about 316 microns. In some embodiments, preferred ranges of the first depth D1, the second depth D2, and the third depth D3 are between about 4 micrometers to about 40 micrometers. Alternatively, in some embodiments, the first depth D1, the second depth D2, and the third depth D3 range from about 5 microns to about 37 microns.

It should be noted that, as shown in FIG. 7, the definition of the depth is the distance extending from the surface 700a to the side away from the surface 700a.

In a single tone pattern design scheme, the depths of the concave portions of the template 700 can be randomly composed and arranged, and the arrangement of the depths of the concave portions of the template 700 can include “the edge region of the template 700 has a shallower depth of the concave portion, and the central region of the template 700 has a shallower depth of the concave portion. The depth of the concave portion is deep” and “the depth of the concave portion in the edge region of the template 700 is relatively deep, and the depth of the concave portion in the central region of the template 700 is shallower” or the depths of the different concave portions are randomly distributed and arranged to form different depths, so as to facilitate the subsequent A color ink layer CL is formed on the lens body LB. In addition, in a two-color, three-color or multi-tone pattern design scheme, the depth of the concave portion of the template 700 can also be arbitrarily arranged and arranged, and the arrangement of the depth of the concave portion of the template 700 can include “the depth of the concave portion in the edge region of the template 700” shallower, the depth of the concave portion in the central area of the template 700 is deeper” and “the depth of the concave portion in the edge area of the template 700 is deeper, and the depth of the concave portion in the central area of the template 700 is shallower” or randomly stacked or distributed according to the depths of the aforementioned different concave portions The depths are different from each other, so as to facilitate the subsequent formation of the color ink layer CL on the lens body LB. The above is only an example, and the present disclosure is not intended to be limiting.

In some embodiments, the first width W1 , the second width W2 and the third width W3 are substantially different from each other, but the present disclosure is not limited thereto. In some embodiments, the first width W1, the second width W2 and the third width W3 may include two widths in total (for example, the first width W1 and the second width W2 are the same, and the third width W3 and the first width W1 or the second width W2 is different). Alternatively, in some embodiments, the first width W1 , the second width W2 and the third width W3 may include a total of one width (eg, the first width W1 , the second width W2 and the third width W3 are all the same). This is just an example for simple description, and the present disclosure is not intended to limit this.

In some embodiments, the first width W1, the second width W2, and the third width W3 range from about 0.03 millimeters to about 14 millimeters. In some embodiments, the preferred range of the first width W1 , the second width W2 and the third width W3 is between about 0.04 mm and about 7.13 mm. Alternatively, in some embodiments, the first width W1, the second width W2, and the third width W3 range from about 0.07 millimeters to about 0.2 millimeters.

In some embodiments, especially in embodiments in which the number of the first recesses R1 , the second recesses R2 and the third recesses R3 are all plural, the plurality of first widths W1 of the plurality of first recesses R1 may be different from each other. Likewise, the plurality of second widths W2 of the plurality of second recesses R2 may be different from each other, and the plurality of third widths W3 of the plurality of third recesses R3 may also be different from each other.

In some embodiments, as shown in FIGS. 7 and 8, the number of templates 700 is one. It should be noted that the scope and spirit of the present disclosure is that the surface 700a of a single template 700 may have at least a plurality of recesses with different depths, so in this embodiment, a template 700 is used as an example for description. In a single tone pattern design scheme, the depths of the concave portions of the single template 700 can be arbitrarily arranged and arranged, and the arrangement of the depths of the concave portions of the template 700 may include “the edge area of the template 700 has a shallower depth of the depressions, and the central area of the template 700 has a shallower depth. The depth of the concave part is deep” and “the depth of the concave part in the edge area of the template 700 is deep, and the depth of the concave part in the central area of the template 700 is shallower” or the depths of the different concave parts are randomly distributed and arranged to form different depths from each other, so as to facilitate Subsequently, a color ink layer CL is formed on the lens body LB. In addition, in a two-color, three-color or multi-tone pattern design scheme, the depths of the concave portions of the template 700 for each tone can also be arbitrarily arranged and arranged. The depth of the concave portion is shallower, and the depth of the concave portion in the central area of the template 700 is relatively deep” and “the depth of the concave portion in the edge area of the template 700 is relatively deep, and the depth of the concave portion in the central area of the template 700 is shallower” or the depths of the different concave portions described above are arbitrary. The stacked or distributed arrangement forms different depths from each other, so as to facilitate the subsequent formation of the color ink layer CL on the lens body LB.

In some embodiments, for example, there is a template 700 with three depths of recesses through which a first pigment having a first hue can exhibit three variations in ink density (ie, visually perceived color) , the second pigment with the second hue can also present three color ink concentrations (that is, the visually perceived color) changes through the template 700 , and the third pigment with the third hue can also present the three color inks through the template 700 Changes in density (ie, visually perceived color). Therefore, the color pattern formed by the template 700 and the above-mentioned first pigment, second pigment and third pigment can present a total of twenty-seven color ink density variations.

Please refer to FIG. 9, which is a combination of the first ink I1, the second ink I2, and the third ink I3 with the substrate B having different ink thicknesses Ta, Tb, Tc, respectively, according to an embodiment of the present disclosure A schematic diagram of different visual colors A1, A2, A3 so that the naked eye NE perceives.

As shown in Figure 9, when the ink (for example: color ink) is thicker, the ink can block the color of the bottom layer, so that it shows less, so the color close to the original ink can be displayed. When the ink is thin, the color of the bottom layer can show through greatly, and the color close to the bottom layer can be displayed. For example, when the first ink I1 with the ink thickness Ta is located over the substrate B (eg: the pupil of the wearer of the contact lens 400 ), the color of the first ink I1 and the substrate B exposed through the naked eye NE (eg: Different from the naked eye NE) of the observer of the wearer of the contact lens 400, the naked eye NE perceives the first visual color A1, because the ink thickness Ta is relatively thick, so the first visual color A1 will be relatively close to the color of the first ink I1 . When the third ink I3 with the ink thickness Tc is located above the substrate B, the color exposed by the third ink I3 and the substrate B passes through the naked eye NE, so that the naked eye NE perceives the third visual color A3, because the ink thickness Tc is relatively thin, so The third visual color A3 will be closer to the color of the base B. When the second ink I2 with the ink thickness Tb is located above the substrate B, the color transmitted by the second ink I2 and the substrate B passes through the naked eye NE, so that the naked eye NE perceives the second visual color A2, because the ink thickness Tb is between the ink thickness Ta and the ink thickness Tc, so the second visual color A2 will be the mixed color of the second ink I2 and the substrate B.

The structure of the contact lens 1000 and how to manufacture another contact lens 1000 by executing the contact lens manufacturing method 600 will be described in detail below.

Please refer to Figure 10. It is a cross-sectional view of a contact lens 1000 according to one embodiment of the present disclosure. The contact lens 1000 includes a lens body LB and a color ink layer CL. The color ink layer CL is embedded in the lens body LB. The color ink layer CL includes a first sublayer SL1 and a second sublayer SL2. The first sublayer SL1 contains the first color ink C1 and has a first color. The second sublayer SL2 contains the second color ink C2 and has a second color. The first color is different from the second color. The first sublayer SL1 has several first color ink film thicknesses T1, the second sublayer SL2 has at least a second color ink film thickness T2, and the color ink layer CL overlaps the first sublayer SL1 and the second sublayer SL2 There is at least a third color ink film thickness T3. In the single tone pattern design scheme, the thickness of the color ink film thickness T can be arranged arbitrarily, and the arrangement of the color ink film thickness T can include "the color ink film thickness T in the edge area of the lens body LB is thinner, and the lens is thinner. The color ink film thickness T is thicker in the central area of the main body LB" and "the color ink film thickness T is thicker in the edge area of the lens body LB, and the color ink film thickness T is thinner in the central area of the lens body LB" or the above-mentioned different color ink films Thickness T is randomly distributed and arranged to form different color ink layers CL. In addition, in the two-color, three-color or multi-tone (tones) pattern design scheme, the thickness of the color ink film thickness T can be arbitrarily arranged and arranged, and the arrangement of the color ink film thickness T can include "the color ink in the edge area of the lens body LB" The film thickness T is thinner, the color ink film thickness T is thicker in the central area of the lens body LB" and "The color ink film thickness T is thicker in the edge area of the lens body LB, and the color ink film thickness T is thinner in the central area of the lens body LB" Alternatively, different color ink layers CL are formed by randomly stacking or distributed arrangement of the aforementioned different color ink film thicknesses T.

Next, how to manufacture another contact lens 1000 by executing the contact lens manufacturing method 600 will be described.

First, the operator can perform step S601 to fill the first template (not shown) with several concave portions of different depths with the first color ink C1, and then perform step S602 to fill the filled first color ink C1 is pad printed to the lower mold LM. Then, step S601 is performed again to fill the second color ink C2 into the second template (not shown) having several recesses with different depths, and step S602 is performed again to move the filled second color ink C2 Printed to the lower mold LM. The first color ink C1 and the second color ink C2 located in the lower mold LM form the color ink layer CL. Next, step S603 , step S604 and step S605 are performed in sequence to manufacture the contact lens 1000 shown in FIG. 10 , for example.

Please refer to FIG. 11, which is a front view of a contact lens 400, a contact lens 500, or a contact lens 1000 according to one embodiment of the present disclosure. As shown in FIG. 11, the color ink layer CL includes a plurality of color ink elements E. Please refer to Fig. 4, Fig. 5, Fig. 8, Fig. 10 and Fig. 11 at the same time, in the contact lens 400, the single color ink element E is filled with a single first concave portion R1, second concave portion R2 Or the color ink C of the third recessed portion R3 is formed (as shown in Fig. 4, Fig. 5 and Fig. 8). In the contact lens 1000, the single color ink element E is formed by the first color ink C1 filled in the single recess, the second color ink C2 filled in the single recess, or the first color ink C1 filled in the single recess It is superimposed with the second color ink C2 filled in a single recess (as shown in Fig. 10). In the present disclosure, the color ink element E may have an area, and the area of the color ink element E is defined as the area of the cross section of the color ink element E on the X-Y plane. In the present disclosure, the color ink element E may have a shape, and the shape of the color ink element E is defined as the shape of the cross section of the color ink element E on the X-Y plane. In a single tone pattern design scheme, the size and area of the color and ink elements E can be arbitrarily arranged. The size and area of E is smaller, the size and area of the color ink element E in the central area of the lens body LB is larger" and "The size and area of the color ink element E in the edge area of the lens body LB is larger, and the central area of the lens body LB is The size and area of the color ink element E is small" or the pattern is formed by randomly distributing and arranging the color ink elements E of different sizes, sizes and areas on the lens body LB. In addition, in a two-color, three-color or multi-tone pattern design scheme, the size and area of the color and ink elements E can be arbitrarily arranged. The size and area of the color ink element E in the edge area of LB is smaller, and the size and area of the color ink element E in the central area of the lens body LB is larger” and “The size and area of the color ink element E in the edge area of the lens body LB is larger. , The size and area of the color ink element E in the central area of the lens body LB is small" or the above-mentioned color ink elements E of different sizes, sizes, and areas are randomly stacked or arranged in the lens body LB to form a pattern.

In some embodiments, the areas of the color ink elements E may be different from each other.

In some embodiments, the shape of the color ink element E may be a circle, but the present disclosure is not limited thereto. In some embodiments, the shape of the color ink element E is a geometric figure such as a triangle, a quadrangle or a polygon. Alternatively, in some embodiments, the shape of the color ink element E may be an irregular-shaped figure. In other words, the present disclosure does not intend to limit the shape of the color ink element E.

Referring to FIG. 12, in the embodiment in which the shape of the color ink element E is a circle, the color ink element E includes at least one first color ink element E1 and at least one second color ink element E2. In some embodiments, at least one first color ink element E1 has a first diameter DM1, and at least one second color ink element E2 has a second diameter DM2.

In some embodiments, the first diameter DM1 and the second diameter DM2 are different from each other, but the present disclosure is not limited thereto. In some embodiments, the first diameter DM1 and the second diameter DM2 may be the same.

In some embodiments, the first diameter DM1 and the second diameter DM2 range from about 0.03 millimeters to about 14 millimeters. In some embodiments, a preferred range for the first diameter DM1 and the second diameter DM2 is between about 0.04 millimeters and about 7.13 millimeters. Alternatively, in some embodiments, the first diameter DM1 and the second diameter DM2 range between about 0.07 millimeters to about 0.2 millimeters.

In the embodiment in which the shape of the color ink element E is a circle, the first diameter DM1 and the second diameter DM2 are substantially equal to the width of the concave portion of the template 700 .

The advantages of the contact lenses of the present disclosure are further illustrated below with specific examples.

For example, the area of the color ink element E disclosed by the contact lens of the present disclosure is assumed to have M sizes (dimensions), and the color ink film thickness T disclosed by the contact lens of the present disclosure is assumed to have 1+n thicknesses (eg : having the first color ink film thickness to the 1+nth color ink film thickness, where n is a natural number greater than 0), then the color pattern (pattern is a pattern) presented by the color ink layer CL of the contact lens of the present disclosure For example, the front view of the contact lens shown in FIG. 11) will be able to show the variation of M*(1+n) combinations of color ink density (ie, the concept of visual color as shown in FIG. 9). Therefore, the pattern of the contact lens of the present disclosure can show stronger contrast, hierarchy and three-dimensional effect than the pattern of the contact lens of the prior art.

Alternatively, in some embodiments of the present disclosure, the color ink film thickness T and the color ink element E can be formed by using two or more templates 700 to present richer tones variations. For example, a color pattern formed using a template 700 having three distributions of different depths of recesses and a first pigment having a first hue, a second pigment having a second hue, and a third pigment having a third hue A richer tonal variation can then be presented compared to the prior art.

Alternatively, in some embodiments of the present disclosure, the color ink film thickness T and the color ink may be formed by pre-tinting a single pigment into a pigment with a plurality of tones and/or using two or more templates 700 Element E for richer tones. For example, two types of templates 700 having different distributions of the depths of the recesses can be used to exhibit multiple hue variations (eg, 4 to 7 hue variations). Thereby, the operator can achieve the effect of saving the manufacturing cost of the template 700 compared with the prior art when manufacturing the contact lens.

In some embodiments, the contact lens will have different sizes such as design size, dry sheet size and wet sheet size after the aforementioned curing process and hydration process. The difference between design size, dry sheet size and wet sheet size will be explained below.

Design size: The size of the tumble dryer: the values disclosed in the specification and the scope of the patent application are the design size. However, in the actual process, after the design size is converted to the dry chip size, the dry chip size will be slightly affected by the curvature of the lower mold LM. In some embodiments, the curvature of the lower mold LM ranges from about 0.114 to about 0.118. Specifically, after the ink is printed on the lower mold LM, if the depth of the concave portion of the template 700 remains unchanged, the above-mentioned curvature will affect the size of the pattern on the dry sheet and the thickness T of the color ink film.

Dry sheet size to wet sheet size: After considering the allowable error value of the design specification, the size of the wet sheet will increase by about 1.12 to about 1.27 times after the hydration process due to the expansion rate of 10%~30%. This is also the actual (pattern) distribution and size of the pattern on the dry sheet after the hydration process.

It should be noted that the directions X, Y, and Z shown in FIGS. 1 to 12 are the directions of the coordinate axes. The directions X, Y and Z are substantially perpendicular to each other.

From the above detailed description of the specific embodiments of the present disclosure, it can be clearly seen that in the contact lens of the present disclosure and the manufacturing method thereof, a single template is carved with a plurality of concave portions of different depths to achieve a single Pad printing has the effect of applying several color inks with different thicknesses to the lens body. In addition, in the contact lens and the manufacturing method thereof of the present disclosure, because the thicknesses of the colored ink films and the areas of the colored ink elements in the contact lens are different from each other, the pattern presented is better than that of the existing contact lenses on the market. The pattern of the glasses has a stronger contrast, layering and three-dimensional effect.

The foregoing outlines features of several embodiments so that those skilled in the art may better understand aspects of the present case. Those skilled in the art will appreciate that the foregoing may readily be used as a basis for designing or modifying other changes to carry out the same purposes and/or realizations of the embodiments described herein without departing from the spirit and scope of the present case. Same advantage. The above content should be construed as an example of the present disclosure, and the protection scope thereof should be subject to the scope of the patent application.

400,500,1000: Contact lenses

600: Manufacturing Method of Contact Lenses

700: Template

700a: Surface

A1: First sight color

A2: Second Vision Color

A3: Third Vision Color

B: base

C: color ink

C1: first color ink

C2: Second color ink

CL: color ink layer

D1: first depth

D2: Second depth

D3: The third depth

DM1: first diameter

DM2: Second Diameter

E: color ink element

E1: first color ink element

E2: Second color ink element

I1: First ink

I2: Second ink

I3: Third Ink

LB: lens body

LM: Lower mold

NE: naked eye

P: Transparent protective layer

R1: first recess

R2: Second recess

R3: Third recess

S601, S602, S603, S604, S605: Steps

SL1: first sublayer

SL2: Second sublayer

T: color ink film thickness

T1: First color ink film thickness

T2: Second color ink film thickness

T3: Third color ink film thickness

Ta, Tb, Tc: ink thickness

TM: Transparent plastic material

UM: Upper mold

W1: first width

W2: Second width

W3: third width

X,Y,Z: direction

In order to make the above and other objects, features, advantages and embodiments of the present disclosure more clearly understood, the accompanying drawings are described as follows: FIG. 1 is a schematic diagram of manufacturing a contact lens using an upper mold and a lower mold according to an embodiment of the present disclosure. FIG. 2 is a schematic diagram of manufacturing a contact lens using an upper mold and a lower mold according to an embodiment of the present disclosure. FIG. 3 is a schematic diagram illustrating the use of an upper mold and a lower mold to manufacture a contact lens according to an embodiment of the present disclosure. FIG. 4 is a schematic diagram of manufacturing a contact lens using an upper mold and a lower mold according to an embodiment of the present disclosure. FIG. 5 is a schematic diagram illustrating the use of an upper mold and a lower mold to manufacture a contact lens according to an embodiment of the present disclosure. FIG. 6 is a flowchart illustrating a method of manufacturing a contact lens according to an embodiment of the present disclosure. FIG. 7 is a cross-sectional view illustrating a template according to an embodiment of the present disclosure. FIG. 8 is a schematic diagram illustrating filling color ink into the concave portion of the template according to an embodiment of the present disclosure. FIG. 9 is a schematic diagram illustrating different visual colors perceived by the naked eye through the matching of inks with different ink thicknesses and substrates according to an embodiment of the present disclosure. FIG. 10 is a cross-sectional view illustrating a contact lens according to an embodiment of the present disclosure. FIG. 11 is a front view illustrating a color ink layer including color ink elements according to an embodiment of the present disclosure. FIG. 12 is a schematic diagram illustrating a first color ink element and a second color ink element according to an embodiment of the present disclosure.

Domestic storage information (please note in the order of storage institution, date and number) none Foreign deposit information (please note in the order of deposit country, institution, date and number) none

1000: Contact Lenses

C1: first color ink

C2: Second color ink

CL: color ink layer

LB: lens body

SL1: first sublayer

SL2: Second sublayer

T1: First color ink film thickness

T2: Second color ink film thickness

T3: Third color ink film thickness

X, Z: direction

Claims (13)

A contact lens, comprising: a lens body; and a color ink layer embedded in the lens body, having a plurality of color ink film thicknesses, and the color ink film thicknesses are different from each other, wherein the color ink layer includes a plurality of color ink film thicknesses Ink elements, the color ink elements include M areas, wherein M is a natural number greater than 1, and the color ink layer further includes a first color ink film thickness to a first 1+n color ink film thickness, wherein n is a natural number greater than 0, the color ink film thickness and the M kinds of areas form M*(1+n) unit color ink concentration, and the M*(1+n) unit color ink concentration is formed on the lens body A colorful pattern. The contact lens of claim 1, wherein the color ink film thickness is in the range of 4 microns to 316 microns. The contact lens of claim 1, wherein the color ink elements comprise at least one first color ink element and at least one second color ink element, the at least one first color ink element has a first diameter, the at least one The second color ink element has a second diameter. The contact lens of claim 3, wherein the first diameter and the second diameter are in the range of 0.03 mm to 14 mm. The contact lens of claim 1, wherein the colored ink layer comprises a first sublayer and a second sublayer, the first sublayer has a first color, and the second sublayer has a second color. The contact lens of claim 5, wherein the first sublayer has a plurality of first color ink film thicknesses, the second sublayer has at least one second color ink film thickness, and the color ink layer is in the first color ink layer The sub-layer and the second sub-layer have at least a thickness of a third color ink film. The contact lens of claim 1, wherein the M*(1+n) unit color ink concentration comprises at least one color ink pigment. A manufacturing method of a contact lens, comprising: forming a color ink layer on a lower mold, wherein the color ink layer has a plurality of color ink film thicknesses, and the color ink film thicknesses are different from each other; combine an upper mold with the lower mold ; filling a transparent glue material between the upper mold and the lower mold to cover the color ink layer; and curing the transparent glue material into a lens body, so that the color ink layer is embedded in the lens body. The method of claim 8, further comprising: filling a transparent protective layer into the lower mold, wherein the step of filling the transparent protective layer into the lower mold is performed when the color ink layer is formed on the lower mold Before the step of moulding, the colored ink layer is caused to form on the transparent protective layer. The method of claim 8, wherein the step of forming the color ink layer on the lower mold comprises: filling a color ink into a plurality of recesses on a template, wherein the recesses have different depths; and pad printing is Filling the color ink into the lower mold, wherein the color ink forms the color ink layer in the lower mold. The method of claim 8, wherein the step of forming the color ink layer on the lower mold comprises: filling a first color ink into a plurality of first recesses on a first template, wherein the first The concave parts have different depths; pad printing the filled first color ink to the lower mold; filling a second color ink into a plurality of second concave parts on a second template, wherein the second concave parts have different depth; and pad printing the filled second color ink to the lower mold, wherein the first color ink and the second color ink form the color ink layer in the lower mold. The method of claim 11, wherein the first color ink and the second color ink are of different colors. The method of claim 11, wherein the first The color ink and the second color ink respectively constitute a first sublayer and a second sublayer of the color ink layer, the first sublayer has a plurality of film thicknesses of the first color ink, and the second sublayer has at least one The second color ink film is thick, and the color ink layer has at least a third color ink film thickness where the first sub-layer and the second sub-layer overlap.

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