KR20220148066A - Cosmetic contact lens - Google Patents

Abstract

The present invention provides a contact lens for beauty care including a lens body and a beauty-care pattern formed on the lens body. The lens body includes an optical area and a surrounding area enclosing the optical area. And a portion of the beauty-care pattern covering the optical area has a form of a hollow dot screen tone pattern having a plurality of hollow dots with a diameter larger than 75μm and smaller than 200μm. The beauty-care pattern includes a specific hollow dot pattern, thereby maintaining the sight of the optical area to prevent the design completion level of the beauty-care pattern from being damaged, improve the decorative property of the contact lens, and minimize the effect on the view of a wearing person.

Description

Cosmetic contact lenses {COSMETIC CONTACT LENS}

This application claims the priority of Taiwan Invention Application No. 110115411, filed on April 28, 2021, which is incorporated herein by reference.

The present invention relates to contact lenses, and more particularly, to cosmetic contact lenses.

As a medical device applied directly to the cornea of the eye to correct vision, contact lenses are widely welcomed in the market due to their superior optical properties, thinness and cosmetic advantages.

In recent years, there has been much discussion of cosmetic contact lenses that can be used to beautify or change the appearance of the wearer's eyes. The number of cosmetic contact lens wearers accounts for a large proportion of contact lens wearers in Asian countries and continues to grow.

Cosmetic contact lenses are formed by bonding cosmetic patterns to the lens body, and also the cosmetic pattern must not cover the optical area of the lens corresponding to the pupil in order to maintain the visibility of the contact lens. In the prior art, the area of the cosmetic pattern distributed in the optical area needs to be minimized or eliminated so as not to affect the wearer's field of vision, thereby limiting the pattern design and reducing the decoration of the cosmetic contact lens. have. In addition, full-color cosmetic contact lenses having a cosmetic pattern composed of an array of colored dots or arrayed colored lines have also been proposed. However, in order to achieve a decorative effect, the cosmetic pattern still greatly affects the wearer's vision.

In this respect, there is a need for a cosmetic contact lens that maintains visibility without limiting the design of the cosmetic pattern, the decorativeness of the contact lens is further improved, and the influence on the wearer's field of vision is minimized.

The present invention provides a cosmetic contact lens comprising a cosmetic pattern comprising a hollow dot screen tone pattern. The hollow dot screentone pattern in the cosmetic pattern may maintain the optical area's field of view without compromising the design perfection of the cosmetic pattern. Thereby, the decorativeness of the cosmetic contact lens is further improved, and the influence on the wearer's field of vision is minimized.

The cosmetic contact lens comprises a lens body and a cosmetic pattern formed on the lens body, wherein the lens body includes an optical area and a peripheral area surrounding the optical area, and covering the optical area. A portion of the cosmetic pattern is in the form of a hollow dot screentone pattern having a plurality of hollow dots having a diameter greater than 75 μm and less than 200 μm.

In a preferred embodiment of this cosmetic contact lens, the arrangement of the hollow dots may be a regular arrangement or an irregular arrangement.

In a preferred embodiment of this cosmetic contact lens, the regular arrangement of the hollow dots may be a rectangular arrangement, a rectangular arrangement having an inclination angle equal to or less than 45 degrees, a concentric arrangement, or a combination thereof.

In a preferred embodiment of the cosmetic contact lens, the types of hollow dots may be size modulation, frequency modulation, hybrid modulation, or a combination thereof.

In a preferred embodiment of this cosmetic contact lens, the pitch of neighboring hollow dots in the hollow dot screentone pattern is greater than 20 μm and less than 100 μm.

In one preferred embodiment of this cosmetic contact lens, the covering of the hollow dots in the hollow dot screentone pattern is between 50% and 90%.

In one preferred embodiment of this cosmetic contact lens, the light transmittance of the hollow dots is between 92% and 99%.

In a preferred embodiment of this cosmetic contact lens, a portion of the cosmetic pattern covering the optical area is in the form of a hollow dot screentone pattern, so that the continuous appearance of the cosmetic pattern is provided due to an optical illusion. Thus, the design perfection of the cosmetic pattern is prevented from being compromised by maintaining the field of view of the optical area, the decorativeness of the contact lens is further improved, and also excellent light transmittance and image contrast are provided to the wearer. .

The above and other aspects of the invention will be better understood in connection with the following detailed description of the preferred but non-limiting embodiment(s). These aspects of the invention will become apparent from the following description of preferred embodiments. The detailed description is for the purpose of illustrating the invention only, and does not limit the scope of the invention, which is defined by the appended claims and their equivalents. It will be apparent to those skilled in the art that many modifications and variations of the present invention can be made without departing from the spirit and scope of the novel concepts of the present disclosure.

1 is a partial enlarged view of a cosmetic pattern 110 and a schematic top view of a cosmetic contact lens 10 including an optical region 100a and a peripheral region 100b according to an embodiment of the present invention.
2 is a schematic diagram of the positions of the optical region 100a and the peripheral region 100b of the cosmetic contact lens 10 corresponding to the eyeball 21 according to an embodiment of the present invention.
3A and 3B are schematic views of cosmetic patterns 110 ′ and 110 ″, respectively, of cosmetic contact lenses 10 according to other embodiments of the present invention.

In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide an in-depth understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details.

It is apparent that departures from the specific designs and methods described and shown will be suggested to those skilled in the art and may be employed without departing from the spirit and scope of the invention. It is to be construed that the invention is not limited to the specific constructions described and shown, but is accorded all modifications that may fall within the scope of the appended claims.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In general, the nomenclature and laboratory procedures used herein are well known and commonly employed in the industry. Conventional methods are used for these procedures, such as those provided in this industry and various general references. When a term is given in the singular, the inventors also contemplated the plural form of the term. The nomenclature used herein and the experimental procedures described below are well known and commonly employed in the art.

As used herein, the term "covering of hollow dots in the hollow dot screentone pattern" refers to the ratio of the area of all hollow dots to the area of the hollow dot screentone pattern.

The drawings below show the present cosmetic contact lens. First, refer to FIGS. 1 and 2 . 1, the cosmetic contact lens 10 includes a lens body 100 and a cosmetic pattern 110 formed on the lens body 100, wherein the lens body 100 is optically a region 100a and a peripheral region 100b surrounding the optical region 100a. Additionally, when the cosmetic contact lens 10 shown in FIG. 2 is worn, the optical region 100a may correspond to the pupil 211 of the eyeball 21 . In order to allow the cosmetic pattern 110 to make a continuous appearance due to the optical illusion and also to provide the wearer with good light transmittance and image contrast at the same time, a portion of the cosmetic pattern 110 covering the optical area 100a is It is in the form of a hollow dot screentone pattern 111 of a halftone design, wherein the hollow dot screentone pattern 111 includes a plurality of hollow dots 112 having a diameter of R1 or R2 and also a hollow dot screentone pattern. The pitch of the neighboring hollow dots 112 in (111) is S1 or S2.

In one preferred embodiment of the present cosmetic contact lens, the diameters R1 and R2 of the hollow dots 112 are greater than 75 μm and less than 200 μm. When the diameter R1 or R2 is smaller than 75 mu m, the hollow dot screentone pattern 111 cannot provide sufficient light transmittance for the optical region 100a; When the diameter R1 or R2 is larger than 200 μm, the cosmetic pattern 110 cannot show continuous appearance.

In a preferred embodiment of the present cosmetic contact lens, the arrangement of the hollow dots 112 in the hollow dot screentone pattern 111 may be a regular array or an irregular arrangement depending on the design of the cosmetic pattern 110 . It may be an array, wherein the regular arrangement may be a rectangular array, a rectangular array having an inclination angle equal to or less than 45 degrees, a concentric array, or a combination thereof.

In a preferred embodiment of the present cosmetic contact lens, the type of the hollow dots 112 is amplitude modulation, frequency modulation, hybrid modulation or these according to the design of the cosmetic pattern 110 . , that is, the diameters R1 and R2 may be the same or different at the same time.

In a preferred embodiment of the present cosmetic contact lens, the pitches S1 and S2 of the neighboring hollow dots 112 in the hollow dot screentone pattern 111 are greater than 20 μm and less than 100 μm, preferably greater than 35 μm and smaller than 75 μm. When the pitches S1 and S2 are smaller than 20 μm, the cosmetic pattern 110 cannot show continuous appearance; When the pitches S1 and S2 are larger than 100 mu m, the hollow dot screentone pattern 111 cannot provide sufficient image contrast for the optical region 100a. Here, the type of the hollow dots 112 is size modulation, frequency modulation, hybrid modulation, or a combination thereof according to the design of the cosmetic pattern 110 , in other words, the pitches S1 and S2 may be the same or different at the same time. .

In one preferred embodiment of the present cosmetic contact lens, the covering of the hollow dots 112 in the hollow dot screentone pattern 111 is between 50% and 90%.

In one preferred embodiment of the present cosmetic contact lens, the light transmittance of the hollow dots 112 is between 92% and 99%.

Next, reference is made to FIGS. 3A and 3B. The shape, color and distribution of the cosmetic pattern of the cosmetic contact lens 10 can be designed according to preset decorative conditions, for example partially covering the optical region 100a and the peripheral region 100b, and also A portion of a two-color discontinuous pattern 110' covering the optical region 100a is in the form of a hollow dot screentone pattern 111 having a plurality of hollow dots 112 with frequency modulation. Phosphorus, a discontinuous pattern 110' of two colors as shown in FIG. 3A (colors not shown), or a portion of a gradient-color pattern 110" covering the optical region 100a. may be the color-conversion pattern 110" shown in FIG. 3B (color not shown), in the form of a hollow dot screentone pattern 111 having a plurality of hollow dots 112 with size modulation, but not limited In other embodiments of the present invention, the cosmetic pattern of the cosmetic contact lens 10 may also include a bi-color discontinuous pattern 110' as shown in FIG. 3A and a color-as shown in FIG. 3B. Combinations or variations of the transformation pattern 110 ″.

The lens body 100 of the cosmetic contact lens 10 according to an embodiment of the present invention may be formed by curing a hydrogel composition or a silicone hydrogel composition. A hydrogel composition includes, for example, but not limited to, a hydrophilic monomer, a crosslinking agent, and an initiator. Silicone hydrogel compositions include, for example, but not limited to, polysiloxane prepolymers, hydrophilic monomers, crosslinking agents, and initiators. The above-mentioned compositions used to form the lens body 100 are generally well known to those skilled in the art.

The above-mentioned curing may include heating, curing triggered by light irradiation, such as UV irradiation, ionizing radiation, for example gamma-ray or X-ray radiation, or microwave irradiation ( eg, crosslinking or polymerization).

A pigment composition suitable for the cosmetic pattern 110 of the cosmetic contact lens 10 according to an embodiment of the present invention includes at least one hydrophilic monomer, an adhesive resin, a colorant, an initiator, and a crosslinking agent. The adhesive resin may be, for example, a polyurethane resin, an acrylic resin or a phenol resin. The colorant may be, for example, an organic colorant or an inorganic colorant, which is commonly used in the relevant industry. Organic colorants include, but are not limited to, C.I. Reactive Yellow 14 (C.I. Reactive Yellow 14), C.I. Reactive Orange 7 (C.I. Reactive Orange 7), C.I. Reactive Red 23 (C.I. Reactive Red 23) or C.I. It may be Reactive Blue 19 (C.I. Reactive Blue 19). The inorganic colorant may be, but is not limited to, iron oxide black, iron oxide brown, iron oxide yellow, iron oxide red or titanium dioxide. have.

Suitable methods for forming the cosmetic pattern 110 on the lens body 100 for the cosmetic contact lens 10 according to an embodiment of the present invention include, but are not limited to, inkjet printing, laser printing, pad It may be a method commonly used in the related industry, such as printing or transfer printing.

The following examples are used to better illustrate the present invention rather than limit it.

Preparation Example 1: Preparation of silicone hydrogel composition for lens body

-[3-(2,2-(hydroxymethyl) butoxy) propyl] polydimethylsiloxane) 20g을 정확하게 측정하여 대략 1시간에 걸쳐 이 용액에 액적 방식으로 첨가하였다. 12 시간 동안 용액을 반응시킨 후, 최종 반응물을 다량의 물로 세척하고, 그후 원 생성물(raw product)을 획득하기 위해 탈수 및 여과하였다. 그후, 염화메틸렌을 증발시켜 제1 폴리디메틸 실록산 매크로머(first polydimethyl siloxane macromer)를 획득하였다. In a flask, 4.44 g of isophoronediisocyanate, 0.0025 g of dibutyltindilaurate as a catalyst and 40 mL of methylene chloride were added to form a solution, and the solution was stirred under a nitrogen stream. . Then, α-butyl-ω-[3-(2,2-(hydroxymethyl)butoxy)propyl]polydimethylsiloxane (α-butyl-

20 g of -[3-(2,2-(hydroxymethyl) butoxy) propyl] polydimethylsiloxane) was accurately measured and added dropwise to this solution over approximately 1 hour. After reacting the solution for 12 hours, the final reaction product was washed with a large amount of water, and then dehydrated and filtered to obtain a raw product. Thereafter, methylene chloride was evaporated to obtain a first polydimethyl siloxane macromer.

In a flask, 8.88 g of isophoronediisocyanate, 0.0025 g of dibutyltindilaurate as a catalyst and 40 mL of methylene chloride were added to form a solution, and the solution was stirred under a nitrogen stream. . Then, 20 g of polydimethylsiloxane was accurately measured and added dropwise to this solution over approximately 1 hour. After reacting the solution at room temperature for 12 hours, accurately measure 0.0025 g of dibutyltindilaurate and 14.4 g of polyethylene glycol monomethacrylate and drop it into the solution over approximately 1 hour. was added as After reacting the solution for 12 hours, the final reaction product was washed with a large amount of water, and then dehydrated and filtered to obtain a raw product. Then, methylene chloride was evaporated to obtain a second polydimethyl siloxane macromer.

39.8 g of the first polydimethyl siloxane macromer, 11.3 g of the second polydimethyl siloxane macromer, 0.5 g of azobisisoheptonitrile (ADVN)), 33.5 g of N-vinylpyrrodine (NVP)), 2-hydroxyethyl methacrylate (HEMA)) 14.0 g, hexafluoroisopropyl methacrylate (HFMA)) 0.3 g, 2-[3-(2H-benzotriazole- 0.6 g of 2-yl)-4-hydroxyphenyl] ethyl methacrylate (2-[3-(2H-Benzotriazol-2-yl)-4-hydroxyphenyl] ethyl methacrylate) and 2 g of ethanol are mixed and approximately A silicone hydrogel composition for the lens body was obtained by stirring for 1 hour.

Preparation Example 2: Preparation of Dye Compositions for Cosmetic Patterns

2-hydroxyethyl methacrylate (HEMA) 6.5 g, N,N-dimethylacrylamide (N, N-dimethylacrylamide, DMA) 4.5 g, 2-hydroxy-2-methylpropiophenone (2-hydroxy-2) -Methylpropiophenone, trade name UV-1173, commercially available from BASF, Taiwan) 2.0 g and black colorant (trade name: Sicovit Black 85E172, commercially available from BASF, Germany) 37.6 g were pulverized with a ball mill (RETSCHPM 400) to form a dye composition .

Example 1

The silicone hydrogel composition obtained from Preparation Example 1 was quantitatively put into a PP mole in a droplet manner and cured at 80° C. for 5 hours and then at 115° C. for 2 hours. After polymerization was completed, the mold was immersed in alcohol for 1 hour, and the molded lens body was taken out of the mold. Then, the dye composition obtained from Preparation Example 2 is adhered to the pad printing rubber head in the same pattern as the cosmetic pattern, and also stamped on the outer surface of the lens body to form a cosmetic contact lens having the cosmetic pattern and photo-polymerized. made it

The obtained cosmetic contact lens has an optical area having a diameter of 3.0 mm at the center of the lens body, and a portion of the cosmetic pattern covering the optical area is in the form of a hollow dot screentone pattern having a plurality of hollow dots in a rectangular arrangement to be. Here, the diameter of the hollow dots is 75 μm, the pitch of the neighboring hollow dots is 35 μm, the light transmittance of the hollow dots is 98%, and the covering of the hollow dots in the hollow dot screentone pattern is 50%.

The obtained cosmetic contact lenses were worn by an adult wearer with binocular visual acuity of 1.0 or higher, and clinical visual acuity tests were performed to evaluate the visual quality of the cosmetic contact lenses according to the following four steps. The test results are listed in Table 1.

Lv.1: The wearer's vision is completely obscured.

Lv.2: The wearer's vision is mostly obscured.

Lv.3: The wearer's vision is affected and slightly blurred, and the vision decreases to around 0.3 after wearing.

Lv.4: The wearer's visual acuity after wearing is approximately 1.0.

Example 2

The method for preparing the cosmetic contact lens of Example 2 was the same as in Example 1. The obtained cosmetic contact lens has an optical area having a diameter of 5.0 mm at the center of the lens body, and a part of the cosmetic pattern covering the optical area is a hollow dot having a plurality of hollow dots in a rectangular arrangement with an inclination angle of 45 degrees It is in the form of a screentone pattern. Here, the diameter of the hollow dots is 100 μm, the pitch of the neighboring hollow dots is 50 μm, the light transmittance of the hollow dots is 98%, and the covering of the hollow dots in the hollow dot screentone pattern is 60%.

The visual quality of the obtained cosmetic contact lenses was tested in the same manner as in Example 1, and the test results are listed in Table 1.

Example 3

The method for preparing the cosmetic contact lens of Example 3 was the same as in Example 1. The obtained cosmetic contact lens has an optical area having a diameter of 5.0 mm at the center of the lens body, and a portion of the cosmetic pattern covering the optical area is in the form of a hollow dot screentone pattern having a plurality of hollow dots in a concentric arrangement to be. Here, the diameter of the hollow dots is 150 μm, the pitch of the neighboring hollow dots is 50 μm, the light transmittance of the hollow dots is 95%, and the covering of the hollow dots in the hollow dot screentone pattern is 80%.

The visual quality of the obtained cosmetic contact lenses was tested in the same manner as in Example 1, and the test results are listed in Table 1.

Example 4

The method for preparing the cosmetic contact lens of Example 4 was the same as in Example 1. The obtained cosmetic contact lens has an optical area having a diameter of 7.0 mm in the center of the lens body, and a part of the cosmetic pattern covering the optical area is a hollow dot having a plurality of hollow dots in a rectangular arrangement with an inclination angle of 30 degrees It is in the form of a screentone pattern. Here, the diameter of the hollow dots is 150 μm, the pitch of the neighboring hollow dots is 35 μm, the light transmittance of the hollow dots is 97%, and the covering of the hollow dots in the hollow dot screentone pattern is 70%.

The visual quality of the obtained cosmetic contact lenses was tested in the same manner as in Example 1, and the test results are listed in Table 1.

Test results of Examples 1 to 4 Example 1 Example 2 Example 3 Example 4 visual quality Lv.3 Lv.3 Lv.4 Lv.4

As can be seen in Table 1, the cosmetic contact lenses obtained in Examples 1-4 can provide excellent visual quality to the wearer. In addition, when the wearer's eyes were observed in the environment, the cosmetic pattern appeared continuously due to an optical illusion, and the design of the cosmetic pattern could be fully expressed.

In summary, the present invention provides a cosmetic contact lens comprising a lens body and a cosmetic pattern, wherein the lens body comprises an optical area and a peripheral area surrounding the optical area, the cosmetic pattern covering the optical area A part of is in the form of a hollow dot screentone pattern having a plurality of hollow dots with a diameter greater than 75 μm and less than 200 μm, thereby preventing the design completeness of the cosmetic pattern from being damaged due to maintaining the field of view of the optical area and the decorativeness of the contact lens is further improved, and the effect on the wearer's field of vision is minimized.

The detailed description is for illustrative purposes only and does not limit the scope of the present invention, which is defined by the appended claims and their equivalents. It will be apparent to those skilled in the art that many modifications and variations of the present invention can be made without departing from the spirit and scope of the novel concepts of the present disclosure.

Claims (7)

A cosmetic contact lens comprising:
a lens body comprising an optical region and a peripheral region surrounding the optical region; and
a cosmetic pattern formed on the lens body;
wherein a portion of the cosmetic pattern covering the optical region is in the form of a hollow dot screentone pattern having a plurality of hollow dots having a diameter greater than 75 μm and less than 200 μm. The cosmetic contact lens of claim 1 , wherein the arrangement of the hollow dots is a regular arrangement or an irregular arrangement. The cosmetic contact lens of claim 2 , wherein the regular arrangement of hollow dots is a rectangular arrangement, a rectangular arrangement having an inclination angle equal to or less than 45 degrees, a concentric arrangement, or a combination thereof. The cosmetic contact lens of claim 1 , wherein the type of hollow dots is size modulation, frequency modulation, hybrid modulation, or a combination thereof. The cosmetic contact lens of claim 1 , wherein the pitch of neighboring hollow dots in the hollow dot screentone pattern is greater than 20 μm and less than 100 μm. The cosmetic contact lens of claim 1 , wherein the covering of hollow dots in the hollow dot screentone pattern is between 50% and 90%. The cosmetic contact lens of claim 1 , wherein the light transmittance of the hollow dots is between 92% and 99%.

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