WO2020153529A1

WO2020153529A1 - Colored contact lens

Info

Publication number: WO2020153529A1
Application number: PCT/KR2019/004609
Authority: WO
Inventors: 박근창
Original assignee: 박근창
Priority date: 2019-01-24
Filing date: 2019-04-17
Publication date: 2020-07-30
Also published as: CN111741847A; JP2021508375A; KR101967128B1; JP7048994B2

Abstract

The present invention relates to a colored lens. More specifically, the present invention relates to a colored lens which can achieve various colors by means of a small number of layers by employing a subtractive color mixture printing method. A colored contact lens according to the present invention may comprise: a bottom layer corresponding to a user's eye side; an upper layer opposite to the bottom layer; and a color part placed between the upper layer and the bottom layer, wherein the color part comprises: a base layer formed on the bottom layer and containing an inorganic material; and an organic color layer formed on the base layer and containing an organic pigment.

Description

Color contact lenses

The present invention relates to color lenses. More specifically, the present invention relates to a color lens that implements various colors using a small number of layers by applying a subtractive color mixing printing method.

A color contact lens (color lens) is a kind of contact lens that can produce not only vision correction but also a cosmetic effect that can change the color of the pupil.

Color lenses can be broadly classified into two classes.

First, there is a transparent color lens.

The transparent color lens was developed for emphasizing transparency rather than changing the iris color or blocking the light rays.

Since the conventional transparent color lens implements a transparent color using a transparent pigment (organic pigment), the color of the user's iris can be seen through the transparent color lens. For this reason, there is a problem that it is difficult to implement a desired color.

The second is an opaque color lens that can change the iris color to another color.

Conventional opaque color lenses have a problem that the process is complicated, the process time increases, the possibility of defects increases, and the manufacturing cost increases because the printing process must be performed as many as the number of colors to be implemented in order to realize the desired color. There is this.

An object of the present invention is to provide a color contact lens having both the characteristics of a transparent color lens and the characteristics of an opaque color lens by applying a subtraction mixed printing method.

The color contact lens according to the present invention includes a bottom layer corresponding to a user's eyeball side, an upper layer corresponding to the lower layer, and a color part positioned between the upper layer and the lower layer And, the color portion is formed on the upper portion of the lower layer, a base layer (Base Layer) comprising an inorganic material and formed on top of the base layer, an organic color layer containing an organic pigment (Organic Color Layer) Can.

In addition, the lower layer includes a 2-hydroxyethyl methacrylate (2-Hydroxyethyl Methacrylate, 2-HEMA) material and a curing agent, the upper layer is a 2-hydroxyethyl methacrylate (2-HEMA) material and a crosslinking agent It can contain.

In addition, the base layer includes a 2-hydroxyethyl methacrylate (2-Hydroxyethyl Methacrylate, 2-HEMA) material, and the inorganic material is at least one of zinc oxide (ZnO2) material or titanium dioxide (TiO2) material It can contain.

In addition, the base layer includes a zinc oxide (ZnO2) material and a titanium dioxide (TiO2) material as the inorganic material, and the content of the zinc oxide material may be greater than the content of the titanium dioxide material.

In addition, the base layer may further include an inorganic pigment.

Also, the area of the base layer may be wider than that of the organic color layer.

Further, the lower layer may include a portion in contact with the base layer, and the upper layer may include a portion in contact with the base layer and a portion in contact with the organic color layer.

In addition, the organic color layer includes a plurality of individual color layers (Individual Color Layer), each of the individual color layers are different from the 2-hydroxyethyl methacrylate (2-Hydroxyethyl Methacrylate, 2-HEMA) material Organic pigments.

In addition, the thickness of the base layer may be thicker than the thickness of each individual color layer.

In addition, the organic color layer includes a first color layer (First Color Layer) and a second color layer (Second Color Layer) as the individual color layer, the first color layer comprises a first organic pigment, the The second color layer includes a second organic pigment corresponding to a color different from the first organic pigment, and the first color layer overlaps a portion overlapping the second color layer and the second color layer It may contain parts that are not.

Also, the first color layer is disposed on the base layer, and the second color layer includes a portion disposed on the base layer and a portion disposed on the first color layer. The width of the 2 color layer may be larger than the width of the first color layer.

Further, the organic color layer further includes a third color layer as the individual color layer, and any one of the first color layer, the second color layer, or the third color layer is magenta )-Based organic pigment, any one of the other may include a yellow-based organic pigment, and the other may include a cyan-based organic pigment.

In addition, the third color layer overlaps the first color layer, overlaps the second color layer, overlaps the first color layer and the second color layer, and overlaps the second color layer. A color layer and a portion that does not overlap the second color layer may be included.

In addition, the thickness of a portion overlapping with another individual color layer in at least one of the plurality of individual color layers may be different from the thickness of a portion not overlapping.

In addition, the overlapping ratio of the first color layer and the second color layer in the first area outside the color portion may be greater in the second area located outside the color lens than in the first area. It may be lower than the overlap ratio of the first color layer and the second color layer.

The color contact lens according to the present invention has an effect capable of realizing a relatively large number of colors using a relatively small number of layers.

The color contact lens according to the present invention can reduce the number of printing processes, simplify the manufacturing process, and reduce the manufacturing cost.

1 to 4 are views for explaining the color contact lens according to the present invention.

5 to 25 are views for explaining the color portion.

26 to 30 are views for explaining a method of manufacturing a color lens according to the present invention.

Hereinafter, a color contact lens according to the present invention will be described in detail with reference to the accompanying drawings.

The present invention can be applied to various changes and can have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and can be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, terms such as first and second may be used to describe various components, but the components may not be limited by the terms. The terms may be used only for the purpose of distinguishing one component from other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may be referred to as a first component.

The term and/or can include a combination of a plurality of related described items or any one of a plurality of related described items.

When a component is said to be "connected" to or "connected" to another component, it may be directly connected to or connected to the other component, but other components may exist in the middle. Can be understood. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it can be understood that no other component exists in the middle.

Terms used in this document are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions may include plural expressions unless the context clearly indicates otherwise.

In this document, terms such as “include” or “have” are intended to indicate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, one or more other features. It can be understood that the existence or addition possibilities of fields or numbers, steps, actions, components, parts or combinations thereof are not excluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms, such as those defined in a commonly used dictionary, may be interpreted as having meanings that are consistent with meanings in the context of related technologies, and are interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. It may not be.

In addition, the embodiments disclosed in this document are provided to more fully explain to those of ordinary skill in the art, and the shapes and sizes of elements in the drawings may be exaggerated for more clear explanation.

In describing the present invention in this document, when it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof may be omitted.

Referring to FIG. 1, the color contact lens 1 according to the present invention (hereinafter referred to as a color contact lens to be referred to as a “color lens”) may be formed in a hemisphere shape.

The concave surface of the color lens 1 corresponds to the user's eye side, and the convex surface can face the outside.

2, the color lens 1, as shown in Figure 2, the lower layer (Bottom Layer, 20) corresponding to the user's eye side, the upper layer (Upper Layer, 30) and the upper layer 30 and the lower layer corresponding to the lower layer 20 A color part (10) positioned between (20) may be included.

The material of the lower layer 20 and the upper layer 30 is not particularly limited, but may include a superimposed material including a 2-Hydroxyethyl Methacrylate (2-HEMA) material in common.

The lower layer 20 may be manufactured using a polymer in which a curing agent is added to 2-hydroxyethyl methacrylate (2-HEMA) material. The curing agent applied to the present invention may not be particularly limited. For example, it may be possible to use hexamethylene diisocyanate as a curing agent.

The upper layer 30 may contact the organic color layers of the lower layer 20 and the color portion 10, although not illustrated. Accordingly, the upper layer 30 may be preferably manufactured using a polymer in which a crosslinking agent is added to 2-hydroxyethyl methacrylate (2-HEMA) material. The crosslinking agent applied to the present invention may not be particularly limited as long as it performs a crosslinking role with individual color layers to be described below.

Details of the relationship between the lower layer 20, the upper layer 30 and the color portion 10 will be clarified through the following description.

Referring to FIG. 3, a color portion 10 may be omitted from the center portion of the color lens 1 to provide a transparent portion. The transparent portion PA may be a portion corresponding to the pupil of the user's eye.

The color part 10 may be located at the periphery of the transparent part PA. The color unit 10 may have a concentric shape.

The color unit 10 may correspond to the iris of the user's eyeball.

The color part 10 may cover at least a part of the iris.

In the present invention, the color part 10 may cover the entire iris or a part of the iris.

Hereinafter, the color part 10 will be described as having a concentric shape to help understanding, but the present invention may not be limited thereto.

For example, in the present invention, the shape of the color part 10 may have a concentric shape, or may have various irregular patterns.

An example of another pattern of the color portion 10 is posted in FIG. 4.

The color unit 10 may be more clearly described through the following description.

5 to 25 are views for explaining the color portion. Hereinafter, description of the above-described portion may be omitted.

Referring to FIG. 5, the color unit 10 may include a base layer (100) and an organic color layer (200).

The base layer 100 is formed on the lower layer 20 and may include an inorganic material.

The base layer 100 may have an opaque property by an inorganic material. Accordingly, the base layer 100 may be referred to as an opaque layer.

Since the base layer 100 is formed on the lower layer 20, it may be desirable that the base layer 100 and the lower layer 20 have similar properties.

Preferably, the base layer 100 may include a polymer containing 2-hydroxyethyl methacrylate (2-HEMA) material for affinity with the lower layer 20.

The polymer used to prepare the base layer 100 is 20-40 parts by weight of 2-hydroxyethyl methacrylate (2-HEMA) material, 0.2-2 parts by weight of methyl methacrylate material, methacrylic acid (Methacrylic Acid) material may include 0.5 to 2 parts by weight of butyl acetate (Butyl Acetate) material 3 to 8 parts by weight. Here, it may be possible to further mix 30 to 60 parts by weight of ethyl cellosolve.

The base layer 100 may include at least one of zinc oxide (ZnO ₂ ) material or titanium dioxide (TiO ₂ ) material as an inorganic material to enhance the color of the organic color layer 200.

When titanium dioxide (TiO ₂ ) is used alone as the inorganic material, 1.0 to 50 parts by weight of titanium dioxide (TiO ₂ ) material is mixed with a polymer containing the 2-hydroxyethyl methacrylate (2-HEMA) material described above. One base material can be used.

In this case, since the opaque white-based titanium dioxide (TiO ₂ ) has a sufficiently high light reflectivity, it is possible to sufficiently prevent the iris from appearing through the base layer 100, and further enhance the color of the organic color layer 200. can do.

When the zinc oxide (ZnO ₂ ) material alone is used as the inorganic material, 10 to 80 parts by weight of the zinc oxide (ZnO ₂ ) material is added to the polymer containing the 2-hydroxyethyl methacrylate (2-HEMA) material described above. Mixed base materials can be used.

Even in this case, it is possible to sufficiently prevent the iris from being visible through the base layer 100, and further enhance the color of the organic color layer 200.

When using titanium dioxide (TiO ₂ ) alone as an inorganic material and comparing zinc oxide (ZnO ₂ ) alone, the amount of zinc oxide (ZnO ₂ ) used is titanium dioxide (TiO ₂ ). It may be more than the amount used. The reason is that the transparency of the zinc oxide (ZnO ₂ ) material is higher than that of titanium dioxide (TiO ₂ ). The zinc oxide (ZnO ₂ ) material is opaque, but it can be considered to be a material with higher transparency than the titanium dioxide (TiO ₂ ) material.

When using a mixture of a zinc oxide (ZnO ₂ ) material and a titanium dioxide (TiO ₂ ) material as an inorganic material, zinc oxide (ZnO) is used in a polymer containing the 2-hydroxyethyl methacrylate (2-HEMA) material described above. ₂ ) A base material obtained by mixing 10 to 80 parts by weight of material and 10 to 30 parts by weight of titanium dioxide (TiO ₂ ) material may be used.

In this case, it is possible to make the color of the organic color layer 200 stand out more.

As such, when a mixture of a zinc oxide (ZnO ₂ ) material and a titanium dioxide (TiO ₂ ) material is used as the inorganic material, the content of the zinc oxide (ZnO ₂ ) material may be greater than that of the titanium dioxide (TiO ₂ ) material. .

Meanwhile, the base layer 100 may further include an inorganic pigment capable of realizing a predetermined color in addition to the inorganic material.

In this case, the base layer 100 may set the overall color tone of the organic color layer 200. For example, when the base layer 100 further includes an inorganic pigment such as red-based iron oxide, the color tone of the organic color layer 200 formed on the top of the base layer 100 tends to be red. Can be set to

As the inorganic pigment, iron oxide black, iron oxide brown, iron oxide yellow, iron oxide red, and the like can be used, and a mixture of these and titanium dioxide may also be used as an inorganic pigment. The inorganic pigment applied to the present invention is not limited thereto, and more various types of inorganic pigment may be applied to the present invention.

The organic color layer 200 is formed on the base layer 100 and may include an organic pigment to implement a predetermined color.

The organic color layer 200 may have a transparent property by an organic pigment. Accordingly, the organic color layer 200 may be referred to as a transparent color layer.

Since the organic color layer 200 is formed under the upper layer 30, it may be desirable that the organic color layer 200 and the upper layer 30 have similar properties.

Preferably, the organic color layer 200 may include a polymer containing 2-hydroxyethyl methacrylate (2-HEMA) material for affinity with the upper layer 30.

In addition, for the affinity of the organic color layer 200 and the base layer 100, the polymer used in the organic color layer 200 may be the same as the polymer used in the base layer 100.

Since the base layer 100 is located under the organic color layer 200 to enhance the color of the organic color layer 200, the area (total area) of the base layer 100 is the area of the organic color layer 200. (Total area).

In a state in which the lower layer 20 and the upper layer 30 are connected, the lower layer 20 includes a portion in contact with the base layer 100, and the upper layer 30 is a portion in contact with the base layer 100 and an organic color layer It may include a portion in contact with (200). In addition, the lower layer 20 at the edge of the color lens 1 may include a portion in contact with the upper layer 30.

Referring to FIG. 6, the base layer 100 may be located outside the transparent portion PA of the central portion of the color lens 1.

The base layer 100 may have a ring shape.

The shape of the base layer 100 may be changed according to the shape of the organic color layer 200.

7 shows an example of another type of base layer 100.

Hereinafter, a case where the base layer 100 has a concentric circle shape will be described as an example to help understanding.

Referring to FIG. 8, the organic color layer 200 may be formed on the base layer 100.

Since the organic color layer 200 is formed on the opaque base layer 100, it is possible to implement the color sense of the organic color layer 200 without distortion.

The organic color layer 200 may be formed radially on the base layer 100.

8 illustrates that the organic color layer 200 has an elliptical shape, the present invention is not limited thereto, and the shape of the organic color layer 200 may be variously changed. For example, the organic color layer 200 may be formed in various forms such as a dot pattern or a stripe pattern.

The organic color layer 200 may include a plurality of individual color layers including different organic pigments.

For example, as shown in (A) and (B) of FIG. 9, the organic color layer 200 is a first color layer (210) and a second color layer (Second Color Layer, 220) as individual color layers. ).

Here, the first color layer 210 and the second color layer 220 may be classified according to a formation position and/or a formation order.

For example, suppose that the base layer 100 is first formed on the lower layer 20, and then the organic color layer 200 is formed on the base layer 100.

In this case, the individual color layer formed first on the base layer 100 may be referred to as the first color layer 210, and the individual color layer formed later may be referred to as the second color layer 220. have.

On the contrary, suppose that the organic color layer 200 is first formed on the upper layer 30, and then the base layer 100 covering the organic color layer 200 is formed.

In this case, the first formed color layer 210 may be referred to as the first color layer 210, and the previously formed individual color layer may be referred to as the second color layer 220.

These rules can be applied equally even when the number of individual color layers is three or more.

Fig. 9B shows a cross-section of Fig. 9A cut in the horizontal direction.

In addition, each individual color layer may include 2-hydroxyethyl methacrylate (2-HEMA) material and different organic pigments.

For example, the first color layer 210 includes 2-hydroxyethyl methacrylate (2-HEMA) material and the first organic pigment, and the second color layer 220 is 2-hydroxyethyl methacryl. It may include a second organic pigment corresponding to a different color from the rate (2-HEMA) material and the first organic pigment.

Examples of organic pigments include phthalocyanine blue, phthalocyanine green, carbazole purple, bat orange 1, etc., and combinations thereof. The organic pigment applicable to the present invention is not limited thereto, and it is possible that more various organic pigments are applied to the present invention.

Since each individual color layer is substantially transparent and a desired color is realized by overlapping (combination) of a plurality of individual color layers, it may be desirable that the thickness of the individual color layers is relatively thin. On the other hand, in order to sufficiently suppress the color of the iris, the base layer 100 may be relatively thick.

In consideration of this, it may be desirable that the thickness of the base layer 100 is thicker than the thickness of each individual color layer.

Here, the first color layer 210 and the second color layer 220 may be partially overlapped with each other.

In other words, the first color layer 210 may include a portion c1 overlapping the second color layer 220 and a portion a1 not overlapping the second color layer 220. In addition, the second color layer 220 may include a portion c1 overlapping the first color layer 210 and a portion b1 not overlapping the first color layer 210.

In another aspect, in the a1 region, the first color layer 210 is in contact with the upper layer 30 and the base layer 100, and in the b1 region, the second color layer 220 is the upper layer 30 and the base layer 100 ), in the c1 region, the first color layer 210 may contact the base layer 100 and the second color layer 220 may contact the upper layer 30.

In the a1 region, the color corresponding to the first pigment is implemented, in the b1 region, the color corresponding to the second pigment is implemented, and in the c1 region, the color corresponding to the first pigment and the color corresponding to the second pigment are subtracted and mixed. Color can be implemented.

Subtractive Color Mixture may mean that when two colors are mixed, the brightness becomes lower than the average brightness before mixing the two colors.

For example, mixing red and yellow becomes orange, mixing yellow and blue becomes green, and mixing blue and red becomes purple. Also, if you mix all of red, yellow, and blue, it can be a color close to the search.

Assuming that the first pigment implements red and the second pigment implements blue, in FIG. 9, a color corresponding to red is implemented in the a1 region, and a color corresponding to blue is implemented in the b1 region, and the c1 region In, a color corresponding to purple may be implemented.

As described above, in the present invention, it is possible to realize three colors using two pigments (first pigment and second pigment). In other words, it is possible to implement three colors using two separate color layers, that is, the first color layer 210 and the second color layer 220.

Unlike the present invention, when an opaque color layer containing inorganic pigments is used as individual color layers, three opaque color layers including different pigments must be formed in order to realize three colors. Accordingly, the manufacturing process is complicated, the manufacturing cost is increased, and the possibility of defects in the manufacturing process may increase.

On the other hand, in the present invention, if a plurality of transparent individual color layers including organic pigments are arranged to overlap each other on the opaque base layer 100, multiple colors can be implemented using a small number of individual color layers. , The manufacturing process can be simplified, the manufacturing cost can be reduced, and the defective rate can be reduced.

In addition, since the substantially opaque base layer 100 is positioned below the region c1 where the first color layer 210 and the second color layer 220 overlap, the precision of subtraction mixing can be further improved. . In other words, since the color of the iris is not reflected due to the base layer 100 in the overlapping region c1, it may be possible to precisely combine desired colors.

The number of individual color layers formed on the base layer 100 may be variously changed.

For example, as illustrated in (A) and (B) of FIG. 10, the organic color layer 200 is a first color layer 210, a second color layer 220, and a third color layer (Third) as individual color layers. Color Layer, 230).

FIG. 10B shows a cross section A1-A2 in which FIG. 10A is transmitted in the horizontal direction.

The first color layer 210, the second color layer 220, and the third color layer 23 commonly include 2-hydroxyethyl methacrylate (2-HEMA) material and different organic pigments. can do. In addition, the first color layer 210 may include a first pigment, the second color layer 220 may include a second pigment, and the third color layer 230 may include a third pigment.

Here, the first color layer 210, the second color layer 220, and the third color layer 230 may partially overlap each other. In detail, the first color layer 210 and the second color layer 220 partially overlap, the first color layer 210 and the third color layer 230 partially overlap, and the second color layer 220 And the third color layer 230 may partially overlap.

In other words, the first color layer 210 includes a portion d2 overlapping the second color layer 220, a portion e2 overlapping the third color layer 230, a second color layer 220, and the like. It may include a portion (f2) that overlaps the third color layer 230 and a portion (a2) that does not overlap the second color layer 220 and the third color layer 230.

In addition, the second color layer 220 may include a portion b2 that does not overlap with the first color layer 210 and the third color layer 230.

In addition, the third color layer 230 may include a portion c2 that does not overlap with the first color layer 210 and the second color layer 220.

Referring to (B) of FIG. 10, in the a2 region, the first color layer 210 contacts the upper layer 30 and the base layer 100, and in the f2 region, the third color layer 230 includes the upper layer 30 and The second color layer 220 may be contacted.

In the a2 region, the color corresponding to the first pigment is implemented, in the b2 region, the color corresponding to the second pigment is implemented, in the c2 region, the color corresponding to the third pigment is implemented, and in the d2 region, the color corresponding to the first pigment is implemented. A color in which the corresponding color and the color corresponding to the second pigment are subtracted and mixed is implemented, and in the e2 region, a color in which the color corresponding to the first pigment and the color corresponding to the third pigment are subtracted and mixed is implemented, and in the f2 region A color obtained by subtracting and mixing the color corresponding to the first pigment, the color corresponding to the second pigment, and the color corresponding to the third pigment may be implemented.

As described above, in the present invention, four or more colors, such as six colors, are implemented using three individual color layers, that is, the first color layer 210, the second color layer 220, and the third color layer 230. It is possible to do. In the present invention, it may be possible to implement seven colors using three separate color layers. This will be described in FIG. 16 below.

FIG. 11 shows a cross-section (B1-B2) in which (A) of FIG. 10 is transmitted in the vertical direction.

Referring to FIG. 11, in the c2 region, the third color layer 230 may contact the upper layer 30 and the base layer 100.

In the e2 region, the third color layer 230 contacts the upper layer 30 and the first color layer 210, and the first color layer 210 contacts the third color layer 230 and the base layer 100. Can.

In the f2 region, the third color layer 230 contacts the upper layer 30 and the second color layer 220, and the second color layer 220 includes the third color layer 230 and the first color layer 210. , And the first color layer 210 may contact the second color layer 220 and the base layer 100.

In the d2 region, the second color layer 220 contacts the upper layer 30 and the first color layer 210, and the first color layer 210 contacts the second color layer 220 and the base layer 100. can do.

In the b2 region, the second color layer 220 may contact the upper layer 30 and the base layer 100.

10 and 11, it may be possible to arrange the first color layer 210, the second color layer 220, and/or the third color layer 230 in a different pattern.

For example, as illustrated in FIG. 12A, the first color layer 210 in the c2 region may contact the upper layer 30 and the base layer 100.

In the d2 region, the third color layer 220 contacts the upper layer 30 and the second color layer 220, and the second color layer 220 contacts the third color layer 230 and the base layer 100. can do.

Alternatively, as illustrated in FIG. 12B, the first color layer 210 in the c2 region may contact the upper layer 30 and the base layer 100.

In the e2 region, the second color layer 230 contacts the upper layer 30 and the first color layer 210, and the first color layer 210 contacts the second color layer 220 and the base layer 100. Can.

In the b2 region, the third color layer 230 may contact the upper layer 30 and the base layer 100.

13A and 13B, the first color layer 210 may be partially overlapped with the second color layer 220 or the third color layer 230, respectively.

Fig. 13B shows the cross section B1-B2 in which Fig. 13A is transmitted in the vertical direction.

The first color layer 210 includes a portion d3 overlapping the second color layer 220, a portion e3 overlapping the third color layer 230 and a second color layer 220 and the third color layer It may include a portion (a3) that does not overlap with (230).

In addition, the second color layer 220 may include a portion b3 that does not overlap with the first color layer 210 and the third color layer 230.

In addition, the third color layer 230 may include a portion c3 that does not overlap with the first color layer 210 and the second color layer 220.

Referring to (B) of FIG. 13, in the c3 region, the third color layer 230 may contact the upper layer 30 and the base layer 100.

In the e3 region, the third color layer 230 contacts the upper layer 30 and the first color layer 210, and the first color layer 210 contacts the third color layer 230 and the base layer 100. Can.

In the area a3, the first color layer 230 may contact the upper layer 30 and the base layer 100.

In the d3 region, the second color layer 220 contacts the upper layer 30 and the first color layer 210, and the first color layer 210 contacts the second color layer 220 and the base layer 100. can do.

In the area b3, the second color layer 220 may contact the upper layer 30 and the base layer 100.

As such, it is possible to center individual color layers that are mainly overlapped.

Alternatively, as in the case of FIG. 14, in the c3 region, the first color layer 210 may contact the upper layer 30 and the base layer 100.

In the d3 region, the first color layer 210 contacts the upper layer 30 and the second color layer 220, and the second color layer 220 contacts the first color layer 210 and the base layer 100. can do.

Referring to FIG. 15, the first color layer 210 is partially overlapped with the second color layer 220 or the third color layer 230, and the second color layer 220 is with the third color layer 230, respectively. Can be partially overlapped.

The first color layer 210 includes a portion d4 overlapping the second color layer 220, a portion e4 overlapping the third color layer 230, and a second color layer 220 and the third color layer The portion a4 that does not overlap with the 230 may be included.

In addition, the second color layer 220 includes a portion f4 overlapping the third color layer 230, a portion b4 not overlapping the first color layer 210 and the third color layer 230. can do.

In addition, the third color layer 230 may include a portion c4 that does not overlap with the first color layer 210 and the second color layer 220.

Referring to FIG. 16, the first color layer 210 includes a portion d5 overlapping the second color layer 220, a portion e5 overlapping the third color layer 230, and a second color layer 220. And a portion (g5) in common overlap with the third color layer 230, a portion (a5) that does not overlap the second color layer 220 and the third color layer 230.

In addition, the second color layer 220 includes a portion f5 overlapping the third color layer 230, a portion b5 not overlapping the first color layer 210 and the third color layer 230. can do.

In addition, the third color layer 230 may include a portion c5 that does not overlap the first color layer 210 and the second color layer 220.

As shown in FIG. 16, in the present invention, it is possible to implement seven colors using three individual color layers, that is, the first color layer 210, the second color layer 220, and the third color layer 230. It is possible.

As such, when three individual color layers (first color layer 210, second color layer 220, and third color layer 230) are used, a magenta-based organic pigment, a yellow-based organic pigment, and It may be possible to use cyan-based organic pigments.

In detail, any one of the first color layer 210, the second color layer 220, or the third color layer 230 includes a magenta-based organic pigment, and one of the other colors includes a yellow-based organic pigment. , The other one is possible to include a cyan (Cyan)-based organic pigment.

In this case, if the amount of each pigment is adjusted, it may be possible to realize sufficiently many kinds of colors.

In the above, the case where the individual color layers are partially overlapped has been mainly described, but the present invention may not be limited to this, and it may be possible that at least one individual color layer is completely overlapped with another individual color layer.

For example, as in the case of FIG. 17, the second color layer 220 may be completely superimposed on the first color layer 210.

In this case, a color corresponding to the first pigment may be implemented in a portion of the first color layer 210 that does not overlap the second color layer 220.

In addition, a color in which the color corresponding to the first pigment and the color corresponding to the second pigment are subtracted and mixed may be implemented in a portion where the first color layer 210 and the second color layer 220 overlap.

On the other hand, the color corresponding to the second pigment may not be implemented alone. That is, the second color layer 220 using the second pigment is used as a material for realizing a predetermined color, and the color corresponding to the second pigment alone may not be implemented.

On the other hand, it may be possible to determine the formation position in consideration of the area of the individual color layers.

For example, as shown in FIGS. 18A and 18B, the total area of the first color layer 210 among the first color layer 210 and the second color layer 220 overlapping each other is the second color. It may be larger than the total area of the layer 220.

Alternatively, as shown in FIGS. 19A and 19B, the total area of the second color layer 220 among the first color layer 210 and the second color layer 220 overlapping each other is the first color layer ( 210).

Alternatively, as shown in FIGS. 20A and 20B, the second color layer 220 that is the second of the first color layer 210, the second color layer 220, and the third color layer 230 is used. The total area may be smaller than the total area of the first color layer 210 and the total area of the third color layer 230.

As described above, the method of setting the formation position according to the area of the individual color layer depends on factors such as affinity between the individual color layer and the base layer 100, affinity between the individual color layer and the top layer 30, and drying conditions of the individual color layers It is possible to apply.

Meanwhile, it may be possible to adjust the thickness of at least one individual color layer.

Preferably, a thickness of a portion overlapping another individual color layer in at least one of the plurality of individual color layers may be different from a thickness of a portion not overlapping.

For example, assume that the first color layer 210 and the second color layer 220 partially overlap, as in the case of FIG. 21A.

In this case, the first color layer 210 includes a portion (c6) overlapping the second color layer 220 and a portion (a6) not overlapping the second color layer 220, and the second color layer ( 220 may include a portion b6 that does not overlap the first color layer 210.

In another aspect, in the c6 region, the first color layer 210 overlaps the second color layer 220, and in the a6 region and the b6 region, the first color layer 210 and the second color layer 220 are mutually It may not overlap.

Here, the thickness t2 of the first color layer 210 in the c6 region may be smaller than the thickness t1 of the first color layer 210 in the a6 region.

In this case, the influence of the first pigment of the first color layer 210 in the region c6 where the first color layer 210 and the second color layer 220 overlap may be reduced.

Meanwhile, the thickness of the second color layer 220 in the c6 region may be smaller than the thickness of the second color layer 220 in the b6 region.

Referring to FIG. 22, unlike FIG. 21, it is possible that the thickness t4 of the first color layer 210 in the c6 region is greater than the thickness t3 of the first color layer 210 in the a6 region.

In this case, the influence of the first pigment of the first color layer 210 may be enhanced in the region c6 where the first color layer 210 and the second color layer 220 overlap.

As such, if the thickness of the individual color layers is adjusted, it may be possible to realize more various colors in the overlapping region.

Meanwhile, it may be possible to apply different thickness adjustments of at least one individual color layer according to a formation position.

For example, as shown in (B) of FIG. 23, the first color layer 210 and the second color layer 220 are respectively provided in any a region ARa and b region ARb on the color lens 1. Let's assume it is partially overlapping.

FIG. 23A shows a cross-section B1-B2 in which the first color layer 210 and the second color layer 220 are vertically transferred in the area a AR.

FIG. 23C shows a cross-section B3-B4 in which the first color layer 210 and the second color layer 220 are vertically transmitted in the area b of area ARb.

Referring to FIG. 23, as shown in (A), in a region ARa, the thickness t2 of the first color layer 210 in the region c6 where the first color layer 210 and the second color layer 220 overlap. May be smaller than the thickness t1 of the first color layer 210 in the region a6 where the first color layer 210 and the second color layer 220 do not overlap.

Alternatively, as shown in (C), in the area bb (ARb), the thickness t2 and the thickness t2 of the first color layer 210 in the area c6 where the first color layer 210 and the second color layer 220 overlap. The thickness t2 of the first color layer 210 in the area a6 where the first color layer 210 and the second color layer 220 do not overlap may be substantially the same.

In this case, the color implemented in the c6 region of the a region ARa and the color implemented in the c6 region of the b region ARb may be different. As described above, even if the same organic pigment is used, if the thickness of at least one individual color layer is differently set in the overlapping region, more various colors may be realized.

On the other hand, it may be possible to set the formation position of the individual color layers according to the total area of the individual color layers.

Preferably, an individual color layer having a relatively small total area may be disposed outside the color lens 1.

For example, as shown in (A) and (B) of FIG. 24, the first color layer 210 and the second color layer 220 overlapping each other are formed on the base layer 100, and the first color Assume that the total area of the layer 210 is smaller than the total area of the second color layer 220.

Here, the first color layer 210 may be disposed skewed to the outside of the color lens 1.

In other words, when the base layer 100 is divided into a concentric circle into a first area (AR1) and a second area outside the first area (AR1) (Second Area, AR2), the first color layer ( 210 may be mainly located in the second area AR2.

In this case, a portion where the first color layer 210 and the second color layer 220 overlap may be mainly located in the second area AR2.

24 illustrates a case where the first color layer 210 does not include a portion positioned in the first area AR1, but the present invention may not be limited thereto.

For example, as in the case of FIG. 25, the first color layer 210 includes a portion located in the first area AR1 and a portion located in the second area AR2, and the second area AR2 It is possible that the total area of the portion located at is larger than the total area of the portion located at the first area AR1.

In this case, the overlap ratio between the first color layer 210 and the second color layer 220 in the first area AR1 is the second area AR2 located outside the color lens 1 than the first area AR1. ) May be lower than the overlap ratio of the first color layer 210 and the second color layer 220.

In this case, the brightness of the color part 10 may be lowered toward the outer side of the color lens 1. In other words, the probability that the color part 10 has a dark color may increase as the color lens 1 goes outward. In this case, it is possible to increase the effect that the eyes of the user become larger.

The manufacturing method of the color lens 1 according to the present invention described above will be described with reference to the accompanying drawings.

26 to 30 are views for explaining a method of manufacturing a color lens according to the present invention. Hereinafter, description of the above-described portion may be omitted.

Referring to FIG. 26, first, the lower layer 20 may be disposed in the lens mold (S100 ). In detail, as illustrated in FIGS. 27A and 27B, the lower layer 20 may be disposed on the upper portion of the convex lens mold 300 so that the convex surface faces the upper portion.

In addition, the base material used for the formation of the base layer 100 on the printing head (Head, 510) may be primarily printed (S200).

For example, as in the case of FIG. 28, the base material 100a is applied to an ink mold 400 having a predetermined pattern, and then the head 510 of the printing apparatus 500 is applied to the base material 100a. ) May be in close contact with the applied ink mold 400.

Then, the base material 100a may be deposited on the surface of the elastic head 510. In other words, the base material 100a may be primarily printed on the surface of the head 510.

Thereafter, the base material 100a may be printed on the lower layer 20 (S110 ). For example, as in the case of FIG. 29, the head 410 on which the base material 100a is printed on the surface may be in close contact with the top of the lower layer 20.

Then, the base material 100a applied to the surface of the head 510 may be secondarily printed on the upper surface of the lower layer 20.

Similar to Fig. 28, an organic color material for forming an individual color layer is applied to another ink mold, and then the other head is brought into close contact with the other ink mold so that the organic color material is deposited on the other head surface (primary organic color material). Printing) (S300).

Thereafter, the organic color material may be secondarily printed (S120) on the lower layer 20 on which the base material 100a is printed.

Thereafter, as shown in FIG. 30, the upper layer 30 may be disposed on the lower layer 20 on which the base material 100a and the organic color material 200a are printed (S130).

Thereafter, through the drying (S140) process, the color lens 1 according to the present invention may be completed.

As described above, it will be understood that the above-described technical configuration of the present invention can be implemented in other specific forms by those skilled in the art to which the present invention pertains without changing the technical spirit or essential features of the present invention.

Therefore, the embodiments described above are illustrative in all respects and should be understood as non-limiting, and the scope of the present invention is indicated by the following claims rather than the above detailed description, and the meaning and scope of the claims And it should be construed that all modifications or variations derived from the equivalent concept are included in the scope of the present invention.

The color contact lens according to the present invention can implement various colors, the manufacturing process is simple, and the manufacturing cost is low, so it is very likely to be used by color contact lens manufacturers and vendors.

Claims

A bottom layer corresponding to the user's eyeball side;

An upper layer corresponding to the lower layer; And

A color part positioned between the upper layer and the lower layer;

Including,

The color part

A base layer formed on the lower layer and including an inorganic material; And

It is formed on top of the base layer, an organic color layer (Organic Color Layer) containing an organic pigment; includes,

The base layer includes a 2-hydroxyethyl methacrylate (2-HEMA) material, and the inorganic material includes a zinc oxide (ZnO 2 ) material and a titanium dioxide (TiO 2 ) material,

The content of the zinc oxide material is greater than the content of the titanium dioxide material color contact lens.
According to claim 1,

The lower layer includes a 2-hydroxyethyl methacrylate (2-HEMA) material and a curing agent,

The upper layer is a color contact lens comprising a 2-hydroxyethyl methacrylate (2-HEMA) material and a crosslinking agent.
According to claim 1,

The base layer is a color contact lens further comprising an inorganic pigment.
A bottom layer corresponding to the user's eyeball side;

An upper layer corresponding to the lower layer; And

A color part positioned between the upper layer and the lower layer;

Including,

The color part

A base layer formed on the lower layer and including an inorganic material; And

It is formed on the base layer, an organic color layer (Organic Color Layer) containing an organic pigment; includes,

The area of the base layer is wider than that of the organic color layer.
The method of claim 4,

The lower layer includes a portion in contact with the base layer,

The upper layer includes a portion in contact with the base layer and a portion in contact with the organic color layer.
A bottom layer corresponding to the eyeball side of the user;

An upper layer corresponding to the lower layer; And

A color part positioned between the upper layer and the lower layer;

Including,

The color part

A base layer formed on the lower layer and including an inorganic material; And

It is formed on the base layer, an organic color layer (Organic Color Layer) containing an organic pigment; includes,

The organic color layer includes a plurality of individual color layers (Individual Color Layer),

Each of the individual color layers includes 2-Hydroxyethyl Methacrylate (2-HEMA) material and different organic pigments,

The color contact lens, characterized in that the thickness of the base layer is thicker than the thickness of each individual color layer.
The method of claim 6,

The organic color layer includes a first color layer and a second color layer as the individual color layers,

The first color layer includes a first organic pigment, and the second color layer includes a second organic pigment corresponding to a color different from the first organic pigment,

The first color layer includes a portion that overlaps the second color layer (Overlap) and a portion that does not overlap the second color layer.
The method of claim 7,

The first color layer is disposed on the base layer,

The second color layer includes a portion disposed above the base layer and a portion disposed above the first color layer,

The color contact lens has a width greater than that of the first color layer.
The method of claim 7,

The organic color layer further includes a third color layer as the individual color layer,

One of the first color layer, the second color layer, or the third color layer includes a magenta-based organic pigment, and one of the other colors includes a yellow-based organic pigment, and the other is cyan ( Cyan) Color contact lenses containing organic pigments.
The method of claim 9,

The third color layer

A portion overlapping the first color layer, a portion overlapping the second color layer, a portion overlapping the first color layer and the second color layer, and the first color layer and the second color A color contact lens comprising a portion that does not overlap a layer.
The method of claim 6,

A color contact lens, wherein at least one of the plurality of individual color layers overlaps another individual color layer, and a thickness of a portion not overlapping is different.
The method of claim 7,

The overlap ratio between the first color layer and the second color layer in the first area outside the color part is the first in the second area located outside the color lens than in the first area. A color contact lens that is lower than the overlap ratio of the color layer and the second color layer.