KR101570798B1 - Method for Producing Lens with Color Juxtaposition and Lens Produced by the Same - Google Patents

Abstract

The present invention relates to a method of manufacturing a juxtaposed mixed lens and a lens therefor, and more particularly, to a method of manufacturing a juxtaposed mixed lens in which a shape of a pupil, an iris, Lt; / RTI > lens. A method of manufacturing a contact lens includes: determining a shape to be represented; Designing a shape centered on an iris portion; Engraving the base substrate according to the designed shape; and printing the imprinted shape with a pad onto the lens precursor, wherein the shape of the pupil or iris portion of the determined shape is included as at least a part of the overall shape.

Description

TECHNICAL FIELD The present invention relates to a method of producing a juxtaposed mixed lens,

The present invention relates to a method of manufacturing a juxtaposed mixed lens and a lens therefor, and more particularly, to a method of manufacturing a juxtaposed mixed lens in which a shape of a pupil, an iris, Lt; / RTI > lens.

Contact lenses are lenses that are primarily attached to the cornea for the purpose of correcting vision and eye beauty. The contact lens can be made of materials such as polymethyl methacrylate (PMMA) resin, hydrogel or silicone hydrogel, and has a diameter larger than that of the hard contact lens and the hard contact lens, And 80%, respectively, of the soft contact lens.

On the other hand, cosmetic contact lenses for the beauty of the eye refer to contact lenses colored with pupil or iris parts except the pupil. Color contact lenses can be made by blending dyes into processed contact lenses and can be made, for example, by the pigment application method, the pigment inlay method, the sandwich method or the binder method binding method). Color contact lenses may have lower oxygen permeability due to the addition of color, surface roughness may be uneven or toxic cells may be generated.

Colored contact lenses, which are colored with lenses, are intended to give a unique personality by wearing lenses, and a specific shape can be formed according to the method of forming colors. Various types of color tinted contact lenses or color contact lenses are known in the art.

Patent Publication No. 2011-0027810 'Colored contact lens having a crescent pattern' is used to improve the iris of a person having a deep eye color in order to solve the problem of a color contact lens or a colored lens for changing the original color of pupil or iris A contact lens including a crescent-shaped pattern is disclosed.

Background Art [0002] A prior art related to contact lenses having a shape or shape is disclosed in Korean Patent Publication No. 2012-0091097 'Color contact lens-based color contact lens.' The prior art provides a transparent contact lens having a pupil or iris section surrounding a pupil compartment and a pupil compartment; And applying a coloring agent to the surface of the contact lens. In the prior art, the coloring agent is applied to a contact lens in a irregular pattern and covers a lens pupil or iris section having an effective area. The irregular pattern imparts a very natural appearance and can change the apparent color of the iris of the lens wearer .

As a prior art related to the appearance change of the lens, Patent Publication No. 2013-0038948 'colored contact lens having a cell pattern' exists. The prior art discloses a lens comprising a plurality of cells having a structure partially or completely enclosing a space.

The lens presented in the prior art discloses changing the color of the iris or making a specific shape around the pupil or iris. However, it is possible to enhance the wearing effect of the cosmetic lens by changing the color of the periphery of the pupil or the iris, rather than changing the visual characteristic of the iris, to express a unique shape.

The present invention has been made to solve the problems of the prior art and has the following purpose.

An object of the present invention is to provide a method of manufacturing a juxtaposed mixed lens in which a pupil or an iris portion is shaped so that a peripheral portion thereof exhibits a specific shape, .

According to a preferred embodiment of the present invention, a method of making a contact lens comprises: determining a shape to be represented; Designing a shape centered on an iris portion; Engraving the base substrate according to the designed shape; and printing the imprinted shape with a pad onto the lens precursor, wherein the shape of the pupil or iris portion of the determined shape is included as at least a part of the overall shape.

According to another preferred embodiment of the present invention, the portion corresponding to the pupil or iris of the lens is at least a part of the print representation represented throughout the lens, and the pupil or iris region of the lens is continuous to the cornea region Thereby visualizing the print representation.

According to another preferred embodiment of the present invention, dots are removed along some area or line so as to form a pattern in a specific area, and dots that are regularly arranged with the same or different shapes, .

The contact lens according to the present invention has an advantage that a use effect of a cosmetic lens or a circle lens is enhanced in that a specific shape or a shape desired by a user can be displayed by using a pupil or an iris. Further, the contact lens according to the present invention has an advantage that it can be applied to a lens having a particularly large diameter so that various shapes can be expressed, for example, a specific event or a particular personality of a user can be sufficiently expressed.

1 shows an embodiment of a manufacturing process of a juxtaposed lens according to the present invention.
FIG. 2 illustrates an embodiment in which an expression is formed in a juxtaposed lens according to the present invention.
FIG. 3 illustrates an embodiment of a lens to which the juxtaposition mixing method according to the present invention can be applied.
FIG. 4 illustrates an embodiment of a juxtaposition mixing lens according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

1 shows an embodiment of a manufacturing process of a juxtaposed lens according to the present invention.

Referring to FIG. 1, a method of manufacturing a contact lens includes the steps of: (S11) determining a shape to be represented; Designing a shape determined based on the pupil or iris portion (S12); (S13) of imprinting a base substrate according to a designed shape; and printing (S14) printing the imprinted shape on a lens precursor with a pad, wherein the pupil or iris portion of the determined shape is included as at least part of the overall shape do.

The contact lens according to the present invention can be applied to any lens, but not limited to, a cosmetic lens or a circular lens, and the present invention is not limited to the lens type.

As used herein, a shape or an expression means, for example, a character, an animal, a plant or a building, a character or an emblem, and is expressed throughout the lens. The color contact lens maintains a transparent state in which the portion corresponding to the pupil is not colored and is colored around the pupil or the iris portion. In contrast, in the juxtaposed mixed lens according to the present invention, the expression is expressed in the entire lens, and thus the pupil or iris portion is not particularly distinguished. Juxtaposition mixing means that many points are densely arranged and visually expressed so that they are mixed with each other. The juxtaposed mixed lens according to the present invention means that a pupil or an iris part includes an expression, for example, by arranging a plurality of points to represent an expression. In other words, the pupil or iris part can be part of the expression and can be a continuous shape without being separately distinguished from the shape represented by the surface water. And many points or dots are distributed throughout the lens and the distribution shape or distribution density changes depending on the expression or shape.

The expression is not particularly limited and may be printed on the lens in various ways. Also, the diameter of the lens may be, for example, 14.5 mm to 22 mm in size, and the present invention is not limited by the diameter of the lens.

In order to manufacture the lens according to the present invention, the shape must first be determined (S11). A shape or an expression is, for example, a character. Letters, numbers. It can be an animal or a flower, a building, or a symbol of various forms. Once the shape is determined, the pattern needs to be designed in a spherical shape (S12). The design of the pattern refers to determining the shape in which the portion corresponding to the pupil is connected to the other portion while making the portion transparent or visible. When the shape is designed, a base substrate stamping step S13 may be performed in which the shape of the copper plate, the iron plate, or the aluminum plate is embossed or embossed. Then, the print pattern can be determined (S14). The print pattern includes, for example, a printing method or the number of times of printing. If the print pattern is determined, pad printing can be performed (S15). A lens precursor may be preformed from a mold for the manufacture of a contact lens according to the present invention. Pad printing can be done on the lens precursor. Pad printing refers to printing a shape stamped on a base substrate with a pad, such as silicone or rubber, on the lens. The pad may have a structure similar to a stamp, for example, and may be continuously advanced in an automated process. Ink may be injected into the base substrate, and the shape of the base substrate may be transferred to the lens by the pad. Transcription can be made many times depending on the shape of the expression. When the pad printing is completed, the lens is heated and the ink may be dried. The heating can be done in a device such as, for example, a heating oven and can be carried out under suitable temperature or time conditions depending on the type of pigment to be printed. For example, the heating can be carried out at a temperature of 80 to 200 DEG C for 3 to 70 minutes. When the heating and drying process is completed (S16), the molding process can be performed (S17). For example, a layer of HEMA material can be formed on top of the printed portion and can be made into the shape of a contact lens. The HEMA material may be the same or similar to the materials mentioned above or may be any suitable material known in the art.

The thickness or the curvature of the molded color contact lens must be adjusted, and a finishing process may be performed on the contact lens in which the shape is formed (S18). For example, the finishing process may include a cutting process and a grinding process, for example, conducted by a lathe or other cutting device. An upper mold having a lens formed thereon for cutting can be fixed to the jig. The cutting process may be performed, for example, by adjusting the curvature of the outer layer, and may be performed using a device such as a lathe. And the polishing process can proceed to the cut part. The polishing process may be carried out using any abrasive material known in the art, and for example the abrasive may comprise a surfactant and particles such as boric acid, sodium borate, silica and aluminum oxide. The contact lenses produced after polishing by the abrasive can be separated from the upper mold using a device such as, for example, an air adsorber. The separated contact lenses are sterilized and made into a juxtaposed lens according to the present invention.

An embodiment in which a pattern is formed in the lens according to the present invention will be described below.

FIG. 2 illustrates an embodiment in which an expression is formed in a juxtaposed lens according to the present invention.

Referring to FIG. 2, the dots 21 may be uniformly disposed on the base substrate 20, and the transparent regions 22 may be formed on the dots 21 and the dots 21. The dots 21 may have various shapes and may be, for example, stars, triangles, squares, diamonds, circles or floral shapes. The dots 21 formed on the base substrate 20 may have different shapes or may have different heights in different regions. Different heights mean height or depth in embossed or engraved. The dot 21 may be removed according to the pattern on the base substrate 20 for the formation of the pattern and thus the patterned region 22a from which the dot 21 has been removed appears. The pattern formation region 22a may be formed in various shapes depending on the representation. When the pattern formation region 22a is completed, imprinting of the base substrate 20 can be completed. The pattern of the base substrate 20 can then be printed on the lens precursor by the pads.

The dot 21 in the lens is displayed as a dark region and the transparent region 22 is displayed as a transparent region, so that an expression can be displayed. Each of the dots 21 or the dots 21 in different regions may have different shades or may have different shades depending on their heights or depths.

The shape for the representation of the lens according to the invention can be imprinted in various ways and the invention is not limited to the embodiments shown.

The lens according to the present invention may be applied to a general lens having a diameter of, for example, 14.5 mm, but may be applied to, for example, a lens having a large diameter for a visual effect.

FIG. 3 illustrates an embodiment of a lens to which the juxtaposition mixing method according to the present invention can be applied.

Referring to FIG. 3, the contact lens 30 according to the present invention includes a first region A1 corresponding to a pupil portion; A second region A2 corresponding to the iris portion; And an extended region (A3) extending around the second region, wherein the first region (A1) and the second region (A2) have the same radius of curvature and the extended region (A3) It can have a large radius of curvature. For example, the curvature radius of the extended area A3 may be 1.2 to 2.0 times the curvature radius of the first and second areas A1 and A2, but is not limited thereto. For example, the radius of curvature of the first area A1 or the second area A2 may be 7.5 to 9.5 mm, and the radius of curvature of the extension area A3 may be 10 to 15 mm. On the other hand, the total diameter of the second area A2 may be 10-15 mm and the diameter of the first area A1 may be 1/4 to 3/4 of the diameter of the second area A2 But is not limited thereto. On the other hand, the diameter of the extended area A3 may be 18 to 24 mm.

The first area A1 is associated with the formation of time and the second area A2 and the extension area A3 are associated with comfort or decorative properties. However, according to the present invention, the dots 21 can be distributed in the first region A1, the second region A2 and the extended region A3, but the distribution density of the dots 21 in the first region A1 is Can be reduced. It is also advantageous for moisture content, oxygen permeability or thickness to be appropriately controlled for the function of the lens. For example, the average thickness of the first region A1 may be 40 to 75 占 퐉, the average thickness of the second region A2 may be 150 to 180 占 퐉, and the thickness of the extending region A3 may be 80 To 120 m. The thickness of the extended area A3 can be adjusted, for example, through a polishing or cutting process. On the other hand, the water content of the first area A1, the second area A2 and the extension area A3 needs to be appropriately adjusted. For example, the water content of the first region A1 may be 30 to 40%, the water content of the second region A2 may be 35 to 50%, and the water content of the extension region A3 may be 40 to 50% 60%. ≪ / RTI > On the other hand, the oxygen permeability (Dk / t) of the first region A1 may be 15 to 35 × 10 ^-9 (cm / sec) (mlO ₂ / mL × mmHg) the oxygen transmission rate is from 10 to ^{15 × 10 -9 (cm / sec} ) (mlO 2 / mL × mmHg) , and the oxygen transmission rate of the number and the protruding area (A3) is 15 to ^{40 × 10 -9 (cm / sec} ) is It can be a _{(mlO 2 / mL × mmHg)} . Such thickness or oxygen permeability can be determined by, for example, a dot distribution. Alternatively, the thickness or oxygen permeability can be determined through a cutting or polishing process.

The thickness of the outer layer 31 or the inner layer 33 may be thinner and the thickness of the dot distribution layer 32 may be thicker in the extended region A3 than in the second region A2. And the extension area A3 is related to fit or decorative property, so that the oxygen permeability or moisture content can be made high. For example, it is possible to adjust the thickness through the cutting or polishing process of the extended area A3 and increase the thickness by using the height of the dot 21. [

Various thickness regulating methods or printing methods can be applied to the method of manufacturing a contact lens according to the present invention, and the present invention is not limited to the embodiments shown.

As described above, the juxtaposed mixed lens according to the present invention can be applied to visualize a character or a character. The dots are distributed over the lens and the shape of the dot is changed to form a character or a character. As described above, such a change in the distribution pattern of the dots occurs in the printing process. The central region corresponds to the pupil region of the lens and forms part of the representation. The pupil forms part of the expression and the brightness may be different due to the different curvature of the iris part as described in Fig. Various representations according to the needs of the user can be visualized on the lens and the present invention is not limited to the embodiments shown.

The contact lens according to the present invention has an advantage that the effect of using a cosmetic lens or a circle lens is enhanced in that a specific shape or a shape desired by a user can be displayed using the iris. Further, the contact lens according to the present invention has an advantage that it can be applied to a lens having a particularly large diameter so that various shapes can be expressed, for example, a specific event or a particular personality of a user can be sufficiently expressed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

20: base substrate 21: dot
22: transparent region 22a: pattern forming region
30: contact lens 31: outer layer
33: inner layer 32: dot distribution layer

Claims (3)

A method for manufacturing a contact lens,
Designing a pattern so that a portion corresponding to the pupil of the lens precursor for manufacturing the contact lens is transparent;
Uniformly arranging a plurality of polygonal or circular dots (21) on a base substrate (20) in a positive or negative direction;
Removing the dots 21 from the base substrate 20 according to the designed pattern to form a pattern forming region 22a;
Transferring the pattern formation region (22a) of the base substrate (20) to the lens precursor;
Wherein the lens precursor is dried to form a layer of HEMA material; And
And adjusting a curvature of the outer layer by a cutting process,
The dot 21 is arranged such that a transparent region 22 is formed between different dots 21 and the pattern forming region 22a is formed by the whole of the contact lens in the form of a character, Displaying an expression such as a shape; The diameter of the contact lens is 14.5 to 22.0 mm, the area corresponding to the iris part has a curvature radius of 7.5 to 9.5 mm, and the area corresponding to the outside of the iris part has a curvature radius of 10 to 15 mm Of the contact lens.
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