CN110720074A

CN110720074A - Contact lens for beauty

Info

Publication number: CN110720074A
Application number: CN201780091736.6A
Authority: CN
Inventors: 松下良; 大谷浩二; 角田真英
Original assignee: Mu Likang
Current assignee: Mu Likang; Menicon Co Ltd
Priority date: 2017-06-14
Filing date: 2017-06-14
Publication date: 2020-01-21
Also published as: JPWO2018229909A1; JP6912567B2; CN117555164A; WO2018229909A1; TW201907205A; TWI765057B

Abstract

The invention provides a novel cosmetic contact lens which can be adapted to the eyes of a wearer to inhibit the sense of incongruity in appearance and make the eye pupil appear larger. In a peripheral portion (16) located on the outer peripheral side of an optical portion (14), a plurality of conical spokes (28) composed of a tip-tapered colored portion having a width dimension that decreases from the outer peripheral side to the inner peripheral side of a cosmetic contact lens (10) are arranged in the lens circumferential direction, and an annular cosmetic pattern region (26) is provided as a whole, the cosmetic pattern region (26) being present over the inner peripheral side and the outer peripheral side of a corneal edge portion (24) to which an eye is worn, and the inner peripheral end of the cosmetic pattern region (26) being located on the cornea and the outer peripheral end being located on the sclera, while conical spokes (28, 28) adjacent in the lens circumferential direction are separated from each other and provided with a non-colored portion (32) extending over the entire length in the radial direction therebetween, and the width dimension of the non-colored portion (32) increases from the outer peripheral side to the inner peripheral side of the.

Description

Contact lens for beauty

Technical Field

The present invention relates to a cosmetic contact lens, and more particularly, to a cosmetic contact lens which is capable of suppressing a sense of incongruity in appearance and making the eye pupil appear large by being adapted to the eye of a wearer by providing a pattern region composed of a novel colored portion, and which is capable of providing a natural cosmetic effect which has not been provided so far.

Background

Conventionally, as one type of contact lenses to be worn on the surface of the eye in a superposed manner, there have been proposed several cosmetic contact lenses which provide a cosmetic effect by colored portions. Some conventional cosmetic contact lenses include a contact lens that changes the color of the eye pupil and a contact lens that makes the eye pupil appear large.

In the former, the dark part of the eye is colored on the inner peripheral side of the boundary (different color edge) between the dark part and the white part, and the dark part (the periphery of the pupil) where the color of the iris is visible through the cornea is covered with a colored portion, whereby the dark part of the eye is seen as a color different from the original color. On the other hand, as shown in japanese patent application laid-open No. 2008-511025 (patent document 1), the latter has an annular colored region covering a white portion of the eye to the outer periphery of the pupil with an outer diameter larger than the different color edge, thereby making the eye black look large.

However, in the cosmetic contact lens for making eye black appear large in the latter, the outer diameter of the eye black is enlarged, and the outer edge of the eye black is clearly emphasized and clarified, whereby the whole expression of the eyes and the face can be made lovely and bright. Therefore, the outer edge of the colored region is formed to have a clearly visible circular line.

However, the present inventors have made extensive studies and found that when the outer edge of the colored region is formed to be conspicuous with a clear circular line so that the boundary between the dark and white eyes is a clear line, the outer edge of the colored region gives an excessively artificial impression to others and is easy to see like the eyes of an image-forming robot (artificial eyes), and particularly in general people other than a model or the like, it is hard to say that the object of "making the whole eyes look beautiful" can be achieved.

Further, based on the above knowledge, the present applicant disclosed novel colored contact lenses capable of avoiding unnatural appearance and alleviating artificial impression by adjusting the concentration or transmittance on the outer peripheral side of a colored region covering the outer edge of eye black in japanese patent laid-open nos. 2013-65059 (patent document 2) and 2013-130658 (patent document 3).

Patent document 1: japanese Kokai publication No. 2008-511025

Patent document 2: japanese patent laid-open publication No. 2013-65059

Patent document 3: japanese patent laid-open publication No. 2013-130658.

Disclosure of Invention

The present invention was made in view of the above circumstances, and provides a novel cosmetic contact lens having a configuration different from that of patent document 2 and patent document 3, which can avoid the unnatural appearance of the colored contact lens as described in patent document 1, suppress the sense of incongruity in appearance in response to the eyes of the wearer, and make the pupil appear large.

The present invention is characterized in that, in a peripheral portion located on an outer peripheral side of an optical portion, a plurality of tapered spokes each having a tapered shape with a tip end decreasing in width from the outer peripheral side to the inner peripheral side of the lens are arranged in a lens circumferential direction, whereby a cosmetic pattern region having an overall annular shape is provided, the cosmetic pattern region having an outer diameter of 11.0 to 14.0mm, the cosmetic pattern region being present on an inner peripheral side and an outer peripheral side of a corneal edge portion of an eye to be worn, an inner peripheral end of the cosmetic pattern region being located on a cornea and an outer peripheral end being located on a sclera, the tapered spokes adjacent in a lens circumferential direction being separated from each other and being provided with non-colored portions extending over a full length in a radial direction therebetween, a minimum separation distance of the outer peripheral ends of the tapered spokes adjacent in the lens circumferential direction being 0.01 to 0.20mm, and the width dimension of the non-colored portion is increased from the outer peripheral side toward the inner peripheral side of the lens.

The present invention utilizes a phenomenon of assimilation of a color, which is one of illusions of the eye, in a cosmetic pattern region existing on the inner and outer peripheral sides of a corneal rim portion, and has a basic technical idea of, in particular, making the assimilation gradually change in the radial direction, adapting the cosmetic pattern region to both the dark state of the cornea and the white state of the sclera, thereby suppressing a sense of incongruity in appearance and making the pupil appear large.

That is, in the cosmetic contact lens having the structure according to the present invention, the non-colored portion is provided in the form of a gap that is continuous over the entire length in the radial direction between the tapered spokes constituting the cosmetic pattern region. Through the gap, an assimilation phenomenon occurs in which colors close to each other are observed in the tapered spokes and the eyes visually recognized through the non-colored portions. As a result, in the cosmetic pattern region, an appearance adapted to the wearer's eyes appears.

Further, in the inner peripheral portion of the beauty pattern region located at the dark eye portion of the cornea, a natural appearance is exhibited in conformity to the dark eye portion of the wearer, and in the outer peripheral portion of the beauty pattern region located at the white eye portion of the sclera, a natural appearance is exhibited in conformity to the white eye portion of the wearer, so that an enlarged outer edge of the cornea can be realized with a natural look and feel.

Further, since the width of the non-colored portion of the cosmetic pattern region increases from the outer periphery toward the inner periphery, the assimilation phenomenon gradually changes in the radial direction, and the mode of the assimilation phenomenon gradually changes in the inner periphery portion and the outer periphery portion. That is, in the inner peripheral portion of the cosmetic pattern region, the assimilation effect that the color of the tapered spokes is close to the color of the cornea of the wearer is favorably exerted, while the assimilation effect that the color of the cornea of the wearer is gradually close to the color of the tapered spokes is exerted as the cosmetic pattern region advances to the outer peripheral side. The assimilation phenomenon is thus changed in the radial direction, and even if the color of the conical spokes is different from the color of the cornea of the wearer, for example, the spokes look integrated with the natural color of the cornea as a whole, and the wearer has an appearance with little discomfort. This makes it possible to give a color clearer than the color of the cornea of the wearer, to make the outer edge of the cornea appear large, and to give a more natural appearance as a whole while suppressing a sense of incongruity caused by a difference from the original color of the cornea of the wearer.

In the present invention, one or more of the following embodiments can be appropriately combined and applied.

In a cosmetic contact lens according to one aspect of the present invention, the tapered spokes have a spoke width dimension of 0.1 to 1.0mm, which is the outer circumferential end having the largest width.

According to this aspect, assimilation of the outer peripheral portion of the cosmetic pattern region can be improved, and a more natural appearance can be exhibited. If the spoke width dimension of the outer peripheral end is less than 0.1mm, the apparent sharpness is reduced, and it is difficult to obtain a cosmetic effect that makes the outer edge of the cornea of the wearer clear and large, which is caused by a cosmetic pattern. On the other hand, if the spoke width dimension at the outer peripheral end exceeds 1.0mm, the visibility is easily conspicuous in appearance, and a cosmetic pattern for the outer edge of the cornea of the wearer may cause a sense of incongruity in appearance.

In the cosmetic contact lens according to one aspect of the present invention, the separation distance Da between the inner peripheral ends and the separation distance Db between the outer peripheral ends and the separation distance Dc between the intermediate portions in the tapered spokes adjacent to each other in the lens circumferential direction have a relationship of 0 < Db < Dc < Da.

According to this aspect, as illustrated in fig. 7 and 11, the width dimension of the non-colored portion provided between adjacent tapered spokes is larger at the outer peripheral end and smaller at the inner peripheral end at any position of the intermediate portion between the inner peripheral end and the outer peripheral end. As a result, the gradual change of the assimilation phenomenon is improved particularly in the inner peripheral portion and the outer peripheral portion, and the assimilation of the inner peripheral portion into the cornea and the assimilation of the outer peripheral portion from the cornea into the sclera are promoted.

In a cosmetic contact lens according to one aspect of the present invention, the separation distance Da between the inner peripheral ends of the tapered spokes adjacent to each other in the lens circumferential direction and the separation distance Db between the outer peripheral ends are such that the width of the inner peripheral ends of the tapered spokes is smaller than the value of Da and the width of the outer peripheral ends of the tapered spokes is larger than the value of Db.

According to this aspect, in the cosmetic pattern region, it is possible to improve the assimilation phenomenon of the inner peripheral portion to the cornea and the assimilation phenomenon of the outer peripheral portion to the sclera, respectively, and further reduce the sense of discomfort in appearance.

In a cosmetic contact lens according to one aspect of the present invention, the tapered spokes have a triangular shape in which each of the tapered spokes is formed of a base at an outer peripheral end and two oblique sides extending from both ends of the base toward an inner peripheral side, and each of the oblique sides is longer than the base.

According to this aspect, assimilation and its gradual action in the radial direction can be expressed by a relatively simple shape of the tapered spokes.

In a cosmetic contact lens to which an aspect of the present invention is applicable, the tapered spokes may be colored portions having substantially constant brightness, hue, chroma, and density over the entire surface.

According to this aspect, the tapered spokes as a whole are formed in a substantially constant color, and the assimilation phenomenon and the gradual change action thereof in the radial direction as described above can provide a natural appearance that can accommodate the cornea on the inner circumferential side and can also provide a cosmetic effect that can make the outer edge of the cornea look large on the outer circumferential side.

In a cosmetic contact lens according to an aspect of the present invention, the tapered spokes may be solid colored portions substantially uniformly throughout the entirety thereof.

According to this aspect, the tapered spokes are colored in a solid state, and can exhibit a natural appearance by assimilation of the corneal color of the wearer, which is seen by a third person through the non-colored region in the worn state.

In a cosmetic contact lens according to one aspect of the present invention, the plurality of tapered spokes are arranged concentrically with respect to a geometric center of the optical portion or the lens.

According to this aspect, for example, in a general contact lens for correcting myopia, hyperopia, or presbyopia, the cosmetic pattern region can be neatly arranged so as to overlap the outer peripheral portion of the cornea of the wearer.

In a cosmetic contact lens according to an aspect of the present invention, the tapered spokes having the same shape and size are arranged at equal intervals in the circumferential direction.

In this aspect, the appearance pattern of the beauty treatment pattern region can be easily provided with a substantially uniform appearance in the circumferential direction while avoiding a visual appearance that is shifted to a specific portion in the circumferential direction. In this aspect, all the tapered spokes constituting the cosmetic pattern region may be tapered spokes having the same shape and size, and in this case, adjacent tapered spokes may be arranged in the circumferential direction with the non-colored portion having a constant shape and size interposed therebetween. However, in this aspect, the tapered spokes having different shapes and sizes may be arranged between the plurality of tapered spokes having the same shape and size and arranged at equal intervals in the circumferential direction.

In a cosmetic contact lens to which an aspect of the present invention is applicable, the width dimension in the lens circumferential direction of the non-colored portion changes so as to gradually increase continuously from the lens outer circumferential side toward the lens inner circumferential side over the entire length in the radial direction of the non-colored portion.

According to this aspect, the assimilation phenomenon gradually changes in the radial direction over the entire length of the non-colored portion in a smoother transition form, and a more natural look can be given.

In the cosmetic contact lens according to one aspect of the present invention, the length dimension in the radial direction of the lens in the non-colored portion has a value of 0.5 to 4.5mm, and the difference Da-Db between the maximum inner peripheral edge width dimension Da and the minimum outer peripheral edge width dimension Db has a value of 0.02 to 3.0 mm.

According to this aspect, the radial length of the assimilation phenomenon can be ensured so that the gradual change action of the assimilation phenomenon can be more effectively exerted in the cosmetic pattern region.

According to the present invention, it is possible to provide a novel cosmetic contact lens in which an assimilation phenomenon of a color of an eye of a wearer is utilized in a cosmetic pattern region including a specific colored portion and a non-colored portion, and the assimilation phenomenon is further gradually changed in a radial direction.

Drawings

Fig. 1 is a reference diagram for explaining the assimilation of color.

Fig. 2 is a front view of a cosmetic contact lens according to a first embodiment of the present invention.

Fig. 3 is an explanatory view for explaining assimilation and gradual change in the radial direction of the cosmetic contact lens shown in fig. 2.

Fig. 4 is a first reference example for explaining assimilation of a pattern region for beauty.

Fig. 5 is a second reference example for explaining assimilation of a pattern region for beauty.

Fig. 6 is an explanatory diagram for explaining assimilation of a pattern region for beauty use.

Fig. 7 is a front view showing a cosmetic contact lens according to a second embodiment of the present invention.

Fig. 8 is a front view showing a cosmetic contact lens according to a third embodiment of the present invention.

Fig. 9 is a front view showing a cosmetic contact lens according to a fourth embodiment of the present invention.

Fig. 10 is a front view showing a fifth embodiment of the present invention as a cosmetic contact lens.

Fig. 11 is an explanatory view for explaining the shape of tapered spokes constituting a cosmetic pattern region in the present invention.

Fig. 12 is an explanatory view showing another form of the outer peripheral end of the tapered spoke shown in fig. 11.

Fig. 13 is a front view illustrating a mode in which the width dimension of the non-colored portion of the cosmetic pattern region is reduced in the middle portion in the lens radial direction as a comparative example of the present invention.

Fig. 14 is a front view illustrating a mode in which the width dimension of the non-colored portion of the cosmetic pattern region is larger at the middle portion in the lens radial direction than at either of the inner peripheral end and the outer peripheral end in the lens radial direction as a comparative example of the present invention.

Fig. 15 is a front view illustrating a mode in which the width dimension of the non-colored portion of the cosmetic pattern region is 0 at the outer circumferential end in the lens radial direction and the outer circumferential ends of the adjacent tapered spokes are colored portions which are continuous in the circumferential direction as a comparative example of the present invention.

Fig. 16 is a front view showing an example of a cosmetic contact lens according to the present invention used in an experiment.

Fig. 17 is a front view showing a cosmetic contact lens as a comparative example used in the experiment.

Fig. 18 is a front view showing a cosmetic contact lens used in an experiment as another comparative example.

Fig. 19 is a front view showing a cosmetic contact lens having a guide mark as an example of an expansion mode of the present invention.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, the "color assimilation phenomenon" used in the present invention will be described. The well-known "color homogenization" is a phenomenon in which a color looks similar to other colors when the color is surrounded or sandwiched by other colors, and is a visual error. Specifically, the assimilation of color is described with reference to the reference diagram shown in fig. 1.

That is, in fig. 1 (a), a plurality of parallel gray lines arranged at a constant interval as a certain color are illustrated, and the gap between the adjacent gray lines in (a1) is a white line as another color, while the gap between the adjacent gray lines in (a2) is a black line as another color. When (a1) is compared with (a2), the assimilation that (a1) appears darker gray than (a2) for the gray line of the same color is perceived.

In fig. 1 (b), a plurality of parallel black lines are shown, which are arranged at a constant interval as a certain color, and the gap between adjacent black lines in (b1) is a white line as another color, while the gap between adjacent black lines in (b2) is a gray line as another color. When (b1) and (b2) are compared, an assimilation that (b1) appears black close to gray with respect to the black line (b2) which is the same color can be observed.

In fig. 1 (c), a plurality of parallel black lines are arranged in parallel and adjacent to each other with gray lines interposed therebetween, as in (a), but the intervals between the black lines are larger than those in (a). When (a) and (c) are compared, it is found that if the line interval is too large, the assimilation of color is difficult to occur, and conversely, a clear contrast phenomenon with the boundary of the surrounding color occurs.

The cosmetic contact lens of the present invention utilizes such color assimilation, but not limited thereto. In the present invention, in addition to the assimilation of color, the assimilation is gradually changed in the radial direction of the eye pupil. That is, the assimilation of color assimilation and the degree of assimilation vary depending on the size of the gap between adjacent colors, as is clear from fig. 1 (a), (b), and (c). The present inventors have paid attention to this phenomenon, and have found that the direction and degree of assimilation of color can be controlled so as to gradually change in the radial direction of the pupil. Further, by providing colored portions having a specific shape in a specific arrangement form on the contact lens and forming a cosmetic pattern region composed of colored portions and non-colored portions, the outer peripheral portion is made to be clear to some extent in conformity with the appearance of the sclera, so that the eye pupil (eye black portion) is made to appear large in appearance and to appear to be in conformity with the color of the natural eye pupil of the human eye, and a novel cosmetic contact lens capable of reducing the discomfort in appearance can be realized.

Fig. 2 is a front view of a cosmetic contact lens 10 according to a first embodiment of the present invention. The contact lens 10 for beauty use has a shape following a conventional known general contact lens, and is formed to have a partial spherical shell shape having a convex front surface in a spherical crown shape and a concave rear surface in a spherical crown shape so as to be fitted to the surface of the cornea of the eye in conformity therewith.

The material of the cosmetic contact lens 10 is not limited, and for example, any of soft contact lenses having water-containing properties such as PHEMA (polyhydroxyethyl methacrylate), non-water-containing properties such as acrylic elastomers, and high oxygen permeability such as silicone hydrogel, in addition to hard lenses such as RGP lenses (oxygen permeable lenses) and PMMA (polymethyl methacrylate), can be used. In particular, soft contact lenses are preferably used in the present invention because they generally cover a white part of the eye with a larger diameter and can move a smaller amount on the cornea when worn, compared to hard contact lenses.

The cosmetic contact lens 10 includes an optical portion 14 that transmits light entering the ocular optical system in a substantially circular central region around a center point substantially identical to or slightly offset from the geometric center 12 of the lens. The optic 14 has an outer diameter dimension φ A greater than the pupil of a human eye and is positioned over the pupil coincident with the cornea when worn.

A peripheral portion 16 is provided on the outer periphery of the optical portion 14, and the peripheral portion 16 surrounds the optical portion 14 in an annular shape with a predetermined width. The peripheral portion 16 is not located on a projection light path to the eye optical system in a worn state, and is provided in consideration of positional stability on an eyeball, improvement in wearing feeling, and the like. The outer peripheral end of the peripheral portion 16 is an edge portion 18 connecting the lens front surface and the lens rear surface.

Further, the optical portion 14 can have specific optical characteristics and can provide a function of correcting visual abnormalities such as myopia, hyperopia, and presbyopia, and thus the cosmetic contact lens (lens) 10 can also serve as a contact lens for correcting visual acuity. However, the cosmetic contact lens 10 according to the present embodiment may be a non-vision correction contact lens having no optical characteristics for vision correction. When provided as a contact lens for non-visual correction, the contact lens can be used, for example, as a cosmetic lens (a contact lens for beauty or make-up).

The cosmetic contact lens 10 of the present embodiment is set so that the outer diameter Dimension (DIA) thereof can entirely cover the dark part (cornea) 20 of the eye and cover the white part (sclera) 22 of the eye with a predetermined width. That is, DIA of the cosmetic contact lens 10 is larger than the outer diameter Φ B of the boundary line (different color edge) 24 between the eye black 20 and the eye white 22 of the eye, and the different color edge 24 is located on the inner peripheral side of the edge portion 18, which is the outer periphery of the cosmetic contact lens 10, in the worn state. Since the eye black 20 is a region in which the color of the iris of the eye can be visually recognized from the outside and is a region in which the iris can be seen through the transparent cornea, the boundary line 24 can be understood as a boundary line between the cornea and the white sclera located on the outer peripheral side thereof.

The cosmetic contact lens 10 is provided with a cosmetic pattern region 26 formed of a colored band portion which is expanded into a substantially circular ring shape as a whole.

In particular, in the present embodiment, the pattern region for beauty treatment 26 is provided in the peripheral portion 16 concentrically around the geometric center axis of the lens (for example, the optical axis of the lens) passing through the geometric center 12. In a worn state in which the cosmetic contact lens 10 is worn on the eye, the cosmetic pattern region 26 has a radial width that extends only in the radial direction across both the inner and outer circumferential sides of the different-color edge (corneal edge) 24 of the eye, and the cosmetic pattern region 26 is attached to the eye black 20 on the inner circumferential side of the different-color edge 24 and to the eye white 22 on the outer circumferential side of the different-color edge 24.

In addition, the cosmetic pattern area 26 preferably has an inner diameter dimension Φ C (see fig. 2) set to a degree that does not substantially overlap the pupil under most of the daily life of the wearer. This suppresses the influence of the cosmetic pattern area 26 on the vision. On the other hand, the outer diameter of the cosmetic pattern region 26 is such that the margin 22 can be covered with a predetermined width. This produces a cosmetic effect of making the different-color edge 24 look large in appearance.

The cosmetic pattern region 26 may be provided so as to reach the edge portion 18 that is the outermost periphery of the cosmetic contact lens 10, but in the present embodiment, the outer diameter dimension Φ D (see fig. 2) of the cosmetic pattern region 26 is smaller than the outer diameter Dimension (DIA) of the cosmetic contact lens 10, and an annular non-colored outer peripheral transparent region 30 that extends in the circumferential direction by a predetermined width in the radial direction is provided between the cosmetic pattern region 26 and the edge portion 18. The presence of the outer peripheral transparent region 30 enables adjustment and setting of the outer diameter of the cosmetic pattern region 26 with a large degree of freedom while ensuring the radial dimension of the peripheral portion 16 that contributes to positional stability of the lens when worn.

In the cosmetic pattern region 26 of the present embodiment, a plurality of tapered spokes 28, each of which is formed of a tip-tapered colored portion whose circumferential width dimension decreases from the outer circumferential side toward the inner circumferential side of the lens, are arranged in the lens circumferential direction, so that radially inner and outer intermediate portions of the tapered spokes 28 are spread with a substantially constant width dimension in the circumferential direction. That is, the cosmetic pattern region 26 has a colored portion of the tapered spokes 28 which is visually recognized as dark in appearance, and a non-colored portion 32 which is located between the adjacent tapered

spokes

28, 28 and is recognized as transparent in appearance (including colorless transparency and colored transparency). Thus, a plurality of tapered spokes 28 are concentrically disposed relative to the optic 14 or geometric center 12 of the lens.

The inner diameter of the beauty treatment pattern region 26 is a diameter of a circle connecting the innermost points of the plurality of tapered spokes 28, and the outer diameter of the beauty treatment pattern region 26 is a diameter of a circle connecting the outermost points of the plurality of tapered spokes 28. In addition, in the case where the beauty treatment pattern region 26 is configured by a plurality of types of the tapered spokes 28 having different radial lengths as in another mode described later, the inner diameter Φ C and the outer diameter Φ D of the beauty treatment pattern region 26 are understood as the smallest inscribed circle and the largest circumscribed circle of the several tapered spokes 28 (Φ C is referred to fig. 7). However, the inscribed circle and circumscribed circle of the cosmetic pattern region 26 need not be perfect circles, and may be, for example, elliptical shapes having a long longitudinal length or a long transverse length.

For the purpose of sufficiently obtaining a cosmetic effect, the cosmetic pattern region 26 is preferably formed with a radial width of 0.5 to 4.5mm, more preferably 1.0 to 3.5 mm. The width dimension in the radial direction of the cosmetic pattern region 26 is preferably constant over the entire length in the circumferential direction. That is, as described above, the inner periphery and the outer periphery of the beauty pattern region 26 can be defined by, for example, the smallest inscribed circle (not limited to a perfect circle) and the largest circumscribed circle (not limited to a perfect circle) in the case of being formed by the tapered spokes 28, and by designing these inscribed circles concentrically with the circumscribed circles and forming them into similar shapes, the radial width dimension of the beauty pattern region 26 can be made constant over the entire circumference. On the other hand, for example, by shifting the centers of an inscribed circle and a circumscribed circle formed by the plurality of tapered spokes 28 from each other, or by forming the inscribed circle and the circumscribed circle in a non-similar shape, the radial width dimension of the cosmetic pattern region 26 can be changed in the circumferential direction.

The inner diameter dimension Φ C of the cosmetic pattern region 26 is preferably 6mm or more, more preferably 7mm or more. In consideration of the size of the cornea of an average person, the inner diameter of the cosmetic pattern region 26 is preferably set to be equal to or smaller than 13mm so that the inner peripheral portion of the cosmetic pattern region 26 covers the eye black 20.

On the other hand, from the viewpoint that the outer periphery of the cosmetic pattern region 26 is natural and the area where the white eye 22 is sufficiently left when worn is effective for the cosmetic effect, the outer diameter dimension Φ D of the cosmetic pattern region 26 is preferably Φ 14mm or less. Further, the outer diameter dimension Φ D of the cosmetic pattern region 26 is preferably Φ 11mm or more, more preferably Φ 12mm or more so as to be able to cover the white of the eye 22 with a predetermined width.

Here, the cosmetic pattern region 26 is formed of a plurality of tapered spokes 28 arranged at predetermined intervals in the circumferential direction, and thus not only has a cosmetic effect of making the different color edge 24 look large in appearance as described above but also gives an appearance impression to a third person who sees the wearer, suppressing unnaturalness and naturally conforming to the eyes of the wearer.

Specifically, as illustrated with reference to fig. 3, fig. 3 (b) shows a plurality of black tapered spokes 28 that constitute the cosmetic pattern region 26 of the cosmetic contact lens 10 shown in fig. 2 superimposed on the gray base color corresponding to the cornea shown in fig. 3 (a). In the following drawings, which describe the cosmetic pattern region 26, the outer shape of the lens is not shown. In addition, the drawings are enlarged for ease of illustration and understanding of the present invention.

As is clear from fig. 3 (b), the black tapered spokes 28 are assimilated to the gray color of the ground color. Further, it is understood that the degree to which the black tapered spokes 28 look close to the gray of the ground color is different between the inner and outer peripheral sides of the cosmetic pattern region 26. The black tapered spokes 28 on the inner peripheral side appear closer to the bottom gray color than on the outer peripheral side.

This means that not only the phenomenon of color assimilation occurs, but also the degree of color assimilation changes with the radial direction toward the cosmetic pattern region 26. In addition, in the worn state, the assimilation phenomenon that the color of the conical spokes 28 as the colored portions is close to the color of the eyes seen through the non-colored portions 32 is exhibited in the inner peripheral portion of the beauty treatment pattern region 26, while the assimilation phenomenon that the color of the eyes is close to the color of the conical spokes 28 is more strongly exhibited in the outer peripheral portion of the beauty treatment pattern region 26 than in the inner peripheral portion. As a result, a transition effect of an assimilation phenomenon is exhibited in which the color of the eye naturally transits from the color of the eye to the color of the colored portion in appearance from the inner periphery side to the outer periphery side of the cosmetic pattern region 26.

In the outermost peripheral portion of the cosmetic pattern region 26, each of the tapered spokes 28 is positioned so as to extend from the dark to the white regions. Since the non-colored portion 32 is also provided between the adjacent tapered

spokes

28, 28 in the outermost peripheral portion of the cosmetic pattern region 26, the color of the colored portion of the tapered spoke 28 is similar to the color of the white that is visually recognized through the non-colored portion. As a result, the boundary between the colored portion and the white of the eye is not visually distinct in the outer periphery of the cosmetic pattern region 26.

In this way, the cosmetic pattern region 26 is adapted to the eye-black color of the wearer at the inner peripheral portion, and transitions to the color of the tapered spokes 28 in a coordinated manner as it goes to the outer peripheral portion, and the outermost peripheral portion of the cosmetic pattern region 26 is extended to a position closer to the outer periphery than the eye-black color, thereby exhibiting a cosmetic effect of making the eye-black color of the wearer appear large in appearance, and suppressing the appearance of a boundary line with the eye-white color from becoming conspicuous, thereby exhibiting a naturally adapted appearance.

That is, in the worn state of the cosmetic contact lens 10 of the present embodiment, the color of the iris in the inner peripheral portion smoothly transits to the color of the tapered spokes 28 in the outer peripheral portion by utilizing the color assimilation phenomenon that the color gradually changes in the radial direction due to the cosmetic pattern region 26, and thereafter, the color of the tapered spokes 28 in the outermost peripheral portion is assimilated to the color of the sclera (white eye), thereby reducing the sense of incongruity in appearance. Such color adaptation shows a form in which, for example, a transition from the color of the iris to the color of the conical spokes 28 and a transition to the color of the sclera cannot be clearly recognized due to the color assimilation, as in the case where the boundary (the corneal edge portion or the heterochromatic edge) between the cornea (eye black) and the sclera (eye white) cannot be clearly classified anatomically. Moreover, since the boundary between the color of the eye and the color of the conical spokes 28 is blurred and gradually transits, the conical spokes 28 artificially colored to make the eye black appear large can be made to appear in an appearance close to the natural color of the eyes of the wearer.

However, in order to obtain such an action and effect, the colored portions constituting the cosmetic pattern region 26 are tapered spokes 28 as illustrated, and a non-colored portion 32 extending continuously in the radial direction over the entire length in the radial direction is provided between the adjacent tapered

spokes

28, 28.

Unlike the structure of the present invention described above, for example, if a bar-shaped (rectangular) spoke extending in the radial direction with a constant width dimension is used instead of the tapered spoke 28, the width dimension of the non-colored region between circumferentially adjacent spokes is smaller on the inner circumferential side and larger on the outer circumferential side, contrary to the present invention. This makes it difficult to assimilate the outermost peripheral portion extending to the outer periphery of the eye black, and the outermost peripheral portion is irregular in appearance and easily conspicuous, and thus tends to give an impression of unnatural appearance and a sense of incongruity to a third person.

As shown in fig. 4, as a reference example 1, even in the case of the tapered spokes 28 having the tapered shape as illustrated, if the tapered

spokes

28 and 28 adjacent to each other are continuous so as to overlap each other at the outermost peripheral portion and the non-colored portion 32 does not reach the outer peripheral end of the cosmetic pattern region 26, unlike the configuration of the present invention described above, the color assimilation phenomenon is not exhibited at the outer peripheral portion of the cosmetic pattern region 26. Therefore, the outer peripheral end of the colored portion that continues over the entire circumference is conspicuous in appearance, and an impression of unnatural and uncomfortable feeling like a robot due to manual work is given to a third person.

In the present embodiment, the non-colored portion 32 provided between the

tapered spokes

28, 28 adjacent to each other in the lens circumferential direction is provided so as to have a width dimension that increases from the outer circumferential side toward the inner circumferential side of the lens. In contrast, for example, as shown in fig. 5 as reference example 2, if the non-colored portion provided between the

tapered spokes

28, 28 adjacent in the circumferential direction is extended over the entire length in the radial direction with a substantially constant width dimension, it is difficult to see the transition of the color assimilation phenomenon in the radial direction. Therefore, it is difficult to sufficiently express the appearance that the color of the tapered spokes 28 and the color of the eyes are naturally assimilated, and it is difficult to simultaneously and sufficiently achieve the cosmetic effect by the appearance of the eye black enlarged at the outermost peripheral portion of the cosmetic pattern region 26 and the natural appearance rendering effect by the adaptation to the eyes of the wearer at the inner peripheral portion of the cosmetic pattern region 26.

In order to achieve effective assimilation, the distance between adjacent

tapered spokes

28, 28 needs to be set appropriately. Particularly, when the separation distance is too large, the contrast phenomenon is expressed in preference to the assimilation phenomenon, as shown in fig. 1 (c) and 5, and the color of the tapered spokes 28 is conspicuous and unnatural, and the color of the tapered spokes 28 and the color of the sclera (white eye) are alternately uneven, thereby giving an impression of discomfort or dislike to a third person.

Therefore, the separation distance of the circumferentially adjacent

conical spokes

28, 28 is set in the range of 0.01 to 0.20mm at the outer circumferential end where the separation distance is the smallest. Although it varies depending on environmental conditions such as illumination and human body distance mainly considered, for example, in a general illumination environment of high intensity such as non-photographing, the separation distance of the outer peripheral ends of the tapered

spokes

28, 28 is preferably set within a range of 0.01 to 0.15mm for a general human body distance (close distance of 15 to 45cm, private distance of 45 to 120cm, social distance of 120 to 360cm, and the like). When the close distance and the private distance are more important, the distance separating the outer peripheral ends of the tapered

spokes

28, 28 is preferably set to be in the range of 0.01 to 0.10 mm. In addition, when the value of the separation distance between the

tapered spokes

28, 28 adjacent in the circumferential direction is difficult to measure by direct visual observation, it can be calculated by, for example, a method of measuring an image obtained by enlarging and projecting the contact lens by transmitted light 20 times in a state where the contact lens is left standing with the rear surface side thereof facing upward by using a universal projector V-12B manufactured by nikon corporation and converting the image into an actual size.

In the cosmetic pattern region 26 in which a plurality of tapered spokes 28 are arranged in the circumferential direction, the increase and decrease in the spoke width of the tapered spokes 28 and the increase and decrease in the width of the non-colored portion 32 provided between the adjacent tapered

spokes

28, 28 are complementary to each other. Therefore, although the spoke width of the tapered spoke 28 has some influence on the appearance, the width dimension of the non-colored portion 32 between adjacent

tapered spokes

28, 28 is the most important factor for the degree of assimilation phenomenon in either a case where the color of the tapered spoke 28 is assimilated by the color of the eye seen through the non-colored portion 32 or a case where the color of the eye seen through the non-colored portion 32 is assimilated by the color of the tapered spoke 28. This can be understood from the fact that, in the specific example of the pattern region for beauty use illustrated in fig. 6 (a) and (b), although both of them use tapered spokes 28 having the same spoke width, the degree of assimilation is very different when (a) in which the width dimension of the non-colored portion is narrowed is compared with (b) in which the non-colored portion is enlarged.

However, the spoke width of the tapered spokes 28 is also preferably in a range from 0.1 to 1.0mm, and more preferably in a range from 0.2 to 0.6mm, from the viewpoint of balance between assimilation performance and appearance. The length of the tapered spokes 28 in the lens radial direction is not particularly limited, but is arbitrarily set on the outer circumferential side so as to be located on the cornea 20 so as not to cover the pupil of the eye of the wearer on the inner circumferential side and to extend from the cornea 20 to the sclera 22 of the wearer. Within the above range, the length of the tapered spokes 28 is generally within a range of 0.5 to 4.5mm, and more preferably within a range of 1.0 to 3.5 mm. Thus, the pattern region 26 for beauty treatment is located on the cornea 20 at the inner peripheral end and on the sclera 22 at the outer peripheral end. The tapered spokes 28 may have a triangular shape including a base (W) located at the outer peripheral end and 2 oblique sides extending from both ends of the base toward the inner peripheral side, and each oblique side may be longer than the base.

The specific shape and the like of the plurality of tapered spokes 28 constituting the cosmetic pattern region 26 are not limited to the isosceles triangles all having the same size and shape as in the first embodiment, insofar as the expression of the assimilation phenomenon is not hindered.

For example, as shown in fig. 7, the beauty treatment pattern region 26 may be configured by a plurality of types of tapered spokes having different shapes and sizes, such as 5 types of tapered

spokes

28a, 28b, 28c, 28d, and 28 e. In addition, the tapered spokes 28 can also be formed as follows: as illustrated in fig. 8, the apex portion of the inner peripheral end is a straight line extending in the circumferential direction, and the entirety of the apex portion is a substantially trapezoidal tapered spoke 28, and as illustrated in fig. 9, the apex portion of the inner peripheral end is rounded into an arc-shaped tapered spoke 28.

In the cosmetic pattern region 26 shown in fig. 7, a total of 5 kinds of tapered

spokes

28b, 28c, 28d, and 28e are repeatedly arranged in the circumferential direction at a constant cycle in order from the longest tapered spoke 28a to the right. Thus, focusing on one of the tapered

spokes

28a, 28b, 28c, 28d, 28e, the tapered spokes of that one type have the same shape and size and are arranged at equal intervals in the circumferential direction. Specifically, focusing on the shortest tapered spoke 28d, a plurality of tapered spokes 28d having the same shape and size are arranged at equal intervals in the circumferential direction, and 4 tapered

spokes

28e, 28a, 28b, 28c having different sizes are arranged between the

tapered spokes

28d, 28d in the circumferential direction. In fig. 7, the two tapered

spokes

28b, 28e disposed on both circumferential sides of the longest tapered spoke 28a have substantially the same shape and size, but by identifying the two tapered

spokes

28b, 28e as being of other types, it is possible to understand that any of the tapered

spokes

28a, 28b, 28c, 28d, 28e constituting the cosmetic pattern region 26 of the present embodiment is a structure in which the tapered

spokes

28a, 28b, 28c, 28d, 28e are arranged at equal intervals in the circumferential direction with the same shape and size. In other words, in the cosmetic pattern region 26 of fig. 7, a plurality of types of tapered

spokes

28a, 28b, 28c, 28d, 28e arranged in a circumferential direction are used as one pattern, and the pattern is periodically arranged in the circumferential direction.

The tapered spokes 28 may be tapered from the outer peripheral side toward the inner peripheral side tip, and need not be isosceles triangles in which all of the 3 sides are straight lines as in the first embodiment. For example, the inclination angles of both side portions extending from the outer peripheral end of the tapered spoke 28 toward the inner periphery may be changed in the longitudinal direction, and specifically, as shown in fig. 10, the tapered spoke 28 may be formed so as to extend toward the inner periphery in a curved shape as a whole, and so that the tip end on the inner peripheral side does not face the center of the beauty treatment pattern region 26. Further, in the tapered spokes 28, both sides (oblique sides) facing each other in the circumferential direction are straight lines, and the width dimension of the non-colored portion continuously changes at a constant rate in the radial direction, whereby the transition of the assimilation phenomenon in the radial direction can be made smoother.

Further, for the non-colored portion 32 located between adjacent conical spokes 28, the circumferential width dimension thereof is largest at the inner circumferential end and smallest at the outer circumferential end of the adjacent

conical spokes

28, 28. In the intermediate portion between the inner peripheral end and the outer peripheral end, the width dimension of the inner peripheral side is not smaller than that of the outer peripheral side, and is larger from the outer peripheral side toward the inner peripheral side. Further, it is not necessary to continuously vary the width dimension of the non-colored portion 32 throughout the entirety of the intermediate portion. For example, there may be a region where the width dimension of the intermediate portion does not change locally in the radial direction, or the change ratio of the width dimension of the intermediate portion in the radial direction may be different continuously or stepwise.

That is, as exemplarily shown in fig. 11 (a), the following equation holds for the circumferential separation distance (equal to the width of the non-colored portion 32) of the circumferentially adjacent tapered spokes 28, when the separation distance between a and a ' at the inner circumferential end is Da, the separation distance between B and B ' at the outer circumferential end is Db, and the separation distance between C and C ' at any point in the middle portion is Dc.

0＜Db＜Dc＜Da

When the radial length dimensions of the circumferentially adjacent tapered

spokes

28, 28 are different from each other, the separation distance between D-a' at the inner peripheral ends of the shorter tapered spokes 28 is Da in the above formula, as shown in fig. 11 (b).

In one embodiment of the present invention, the non-colored portion 32 can have a length dimension in the lens radial direction of 0.5 to 4.5mm, and a difference Da-Db between the maximum inner peripheral edge width dimension Da and the minimum outer peripheral edge width dimension Db of 0.02 to 3.0mm, for example. In one embodiment of the present invention, the separation distance Da and the separation distance Db between the inner and outer circumferential ends of the tapered

spokes

28, 28 adjacent to each other in the lens circumferential direction may be configured such that the width dimension of the inner circumferential end of the tapered spoke 28 is smaller than Da and the width dimension (W) of the outer circumferential end is larger than Db.

The outer peripheral side (W) of the tapered spokes 28 (corresponding to the base of the isosceles triangle) need not be a straight line in the bow-string shape of the outer peripheral circle of the cosmetic pattern region 26. For example, a curved line such as an arc shape as shown in fig. 12 (a) may be used. Further, as shown in fig. 12 (b), the intersections of the outer peripheral side edges of the tapered spokes 28 with the other two edges (oblique edges) at both ends may be smoothly connected as an arc shape, or may be connected in a shape obtained by chamfering a C-chamfer shape as shown in fig. 12 (C). By adopting the corner shapes as in (b) and (c) above and slightly widening the separation distance between the

tapered spokes

28, 28 at the outermost peripheral edge, the outer peripheral edge of the cosmetic pattern region 26 can be shaded and the appearance can be more natural by utilizing the assimilation phenomenon that assimilates to the sclera.

On the other hand, in the case where Dc < Db is set in contrast to the conditions of the above expression, as illustrated in (a) to (c) of fig. 13, a darker colored region is located at the radially middle portion of the cosmetic pattern region 26 and is easily visible, and the phenomenon of color homogenization at the inner peripheral end and the outer peripheral end is less likely to be sufficiently exhibited than the radially middle portion, resulting in a feeling of discomfort in appearance.

In contrast to the conditions of the above formula, when Da < (Db, Dc) is set, as illustrated in fig. 14 (a) and (b), the darker colored region is located at the radially inner and outer peripheral portions of the pattern region 26 for beauty treatment and is easily visible, and the color homogenization phenomenon at the radially intermediate portion is difficult to sufficiently exhibit, resulting in a feeling of strangeness in appearance.

In contrast to the condition of the above formula, when Db is set to 0 or less, as illustrated in fig. 15, a clear colored edge is visually recognized at the outer peripheral edge of the design region 26 for beauty use, and the outer edge is not conspicuous due to the contrast phenomenon because the assimilation phenomenon is not exhibited, and as a result, an artificial appearance such as a robot appears.

The results of the tests conducted by the present inventors are described below in order to confirm the effects of the present invention as described above. In this test, a visual confirmation sensory evaluation was performed on the cosmetic pattern region 26 composed of the colored patterns of examples 1 to 3, which follow the structure of the present invention, shown in fig. 16 and comparative examples 1 to 6, shown in fig. 17 to 18 (according to JIS Z9080: 2004). Further, the gist of the present test is not to investigate the preference but to verify the visual confirmation of the details of the colored pattern, and therefore, in order to easily observe the colored pattern and to easily compare the patterns, a method is adopted in which a pattern printed in the actual size on an overhead projector (OHP) projection sheet is used as the colored pattern, and the OHP projection sheet is superimposed on a sheet on which a photograph of the eye is printed in the actual size instead of being worn by the eye.

The test is performed in an illumination environment suitable for the environment in which the computer display operates, and it is noted that the illumination of the illumination device in the test environment is not reflected in the colored pattern to be observed. The distance between the test operator and the colored pattern to be observed was approximately 50 cm. The test subjects were 7 persons who had sufficient knowledge and experience with cosmetic contact lenses.

[ test 1]

Test subjects: examples 1 to 3 and comparative examples 1 to 3

The test method comprises the following steps: regarding the colored pattern of each test object, whether or not the outermost peripheral portion was visually observed as a feeling of irregularity was evaluated. The evaluation results indicated answers in the four items "convexo concave (concave-convex) appearance", "slightly convexo concave appearance", "less convexo concave appearance", and "no convexo concave appearance".

And (3) test results: shown in the following [ Table 1 ].

[ Table 1]

Example numbering	Look convex-concave	Slightly convex-concave appearance	Look less convex-concave	Look like without convex-concave
					Example 1				7
Example 2		4	3
					Example 3	3	3	1
Comparative example 1	7
					Comparative example 2	7
Comparative example 3				7

[ test 2]

Test subjects: examples 1 to 3 and comparative examples 1 to 2

The test method comprises the following steps: in the colored patterns of examples 1 to 3 and comparative examples 1 to 2, it was evaluated which of the outermost peripheral portions was darker than that of comparative example 3. The evaluation result indicates the answer of either one of them.

And (3) test results: the total of 7 test subjects answered "comparative example 3, one clearly seen a darker color than the test subjects".

[ test 3]

Test subjects: examples 1 to 3 and comparative examples 1 to 6

The test method comprises the following steps: the colored pattern of each test object was evaluated whether the "lines" (tapered spokes) constituting the colored pattern appeared as separate "lines" scattered from each other or appeared to be closely integrated with adjacent "lines". The evaluation results indicate answers in the four items "look distracted", "look slightly attached", and "look attached".

And (3) test results: shown in Table 2 below.

[ Table 2]

Example numbering	Look scattered	Look slightly distracted	Looks slightly clingy	Looks closely attached
					Example 1			2	5
Example 2	1	1	5
					Example 3	1	3	3
Comparative example 1	6		1
					Comparative example 2	6		1
Comparative example 3		1	4	2
					Comparative example 4	3	4
Comparative example 5		2	2	3
					Comparative example 6	5		1	1

[ test result summary ]

From the results of test 1, it was confirmed that the outermost periphery of the colored pattern appeared to be convex and concave in the case where Db (distance between B and B') exceeded 0.2 mm.

From the results of test 1 and test 2, it was confirmed that even in example 1 in which the whole test performer responded "not to look uneven", in comparison with comparative example 3 in which Db was 0mm, the whole test performer responded "that the color of comparative example 3 was clearly seen was darker", and a difference in the visibility was caused by the presence of a gap in Db.

In test 3, in examples 1 to 3 and comparative examples 1 to 2, the shape of the conical spokes was the same and Db was changed, but a comparison thereof confirmed that when Db exceeded 0.2mm, the spoke shape could be clearly seen and an assimilation phenomenon was not substantially exhibited.

In each of comparative examples 4 to 6, the separation distance between spokes, which are adjacent colored portions, does not satisfy the above conditional expression "0 < Db < Dc < Da", and comparative examples 4 and 5 are identical to comparative examples 1 and 2 in Db, so that the evaluation was made in test 1 as "uneven appearance", and in comparative example 6, the spoke shape was clearly recognized and no assimilation was observed from the result of test 3.

The embodiments and examples of the present invention have been described in detail, but the present invention is not to be construed as being limited to the specific descriptions.

For example, the specific color of the tapered spokes 28 is not limited by brightness, hue, chroma, concentration, etc. That is, not only the natural cornea color and sclera color of the human eye vary depending on the species and individual differences, but also the desired color of the cosmetic contact lens varies depending on the application, individual differences, and the like, and therefore the color of the tapered spokes 28 can be appropriately set in accordance with such various conditions and requirements. Further, since colors similar to each other tend to be assimilated, for example, in consideration of human races, tapered spokes of a plurality of colors are prepared and provided to the market.

The optical portion 14, the non-colored portion 32, the outer transparent region 30, and the like of the cosmetic contact lens of the present invention may be colorless transparent or colored transparent, and the optical portion 14 may be made transparent in consideration of, for example, the transmittance of visible light, and the non-colored portion 32 may be made transparent in consideration of, for example, the iris color and the cosmetic effect on the appearance. However, in the cosmetic pattern region 26, the light transmittance and the color density are set to be different so that the tapered spokes 28 can be recognized as colored regions with respect to the non-colored portions 32 and can exert an effect of assimilation.

The method of providing the tapered spokes 28 in a colored state for a contact lens is not limited in the present invention. For example, as described in japanese patent application laid-open No. 3-54519, etc., the molded single-base body of a contact lens can be colored when it is injection molded into a contact lens, or hand-drawing, photographic printing, screen printing, etc. can be performed, and pad printing or inkjet printing can be employed in consideration of the spherical surface shape of the cover surface, mass productivity, coloring accuracy, color reproducibility, etc.

Further, the tapered spokes 28 may change color by gradually changing the color from the inner circumferential side to the outer circumferential side, for example, or may substantially make the entire color constant (brightness, hue, chroma, and density). In addition, although different colors can be set in the plurality of tapered spokes, the use of the same color tapered spokes can provide an appearance of a uniform color as a whole in the cosmetic pattern region. In addition, when the tapered spokes are colored in a dot shape with a translucent or opaque coloring material, for example, a region where no dot is attached can be left, and when the assimilation of the color generated in the non-colored portion between adjacent tapered spokes is taken into consideration, the entire surface of the tapered spokes is preferably a colored region in a substantially uniformly solid coated state in which the light is translucent or opaque.

In addition, the tapered spokes constituting the cosmetic pattern region are generally arranged in a circular shape centering on the optical portion, the geometric center of the lens, and the like, but in the case where the cornea is deviated from the geometric center in the worn state like an eccentric lens, for example, the spokes are not necessarily interpreted as the center position.

The cosmetic contact lens according to the present invention has a colored portion (colored portion) formed of tapered spokes, but other colored structures may be used in combination as long as the effects of assimilation are not hindered. For example, as illustrated in fig. 19, a mark 36 such as a guide mark for indicating the wearing direction, which can be seen in an astigmatic contact lens or the like, can be used in combination with the tapered spokes 28.

In addition, in the above-described embodiments, some specific examples of the tapered spokes that can be employed in the present invention are given, but these are merely examples and are not intended to be construed as limiting. In addition, fig. 7 illustrates a mode in which tapered spokes having different radial lengths are combined to form a cosmetic pattern region, but in the present invention, the radial lengths are not limited, and various tapered spokes having different inner peripheral ends, outer peripheral ends, radial intermediate portions, and the like may be suitably combined to form the cosmetic pattern region. More specifically, for example, the cosmetic region may be configured by appropriately combining tapered spokes having different circumferential widths, non-colored portions having different circumferential widths and different shapes, tapered spokes having different shapes at the inner circumferential end, the outer circumferential end, and the radial intermediate portion, tapered spokes having different colors and different transparencies, and the like.

In addition, it is needless to say that the present invention can be implemented in various forms such as modifications, corrections, improvements, and the like based on the knowledge of those skilled in the art, and such embodiments are included in the scope of the present invention as long as they do not depart from the gist of the present invention.

Description of the reference numerals

10 … cosmetic contact lenses; 12 … geometric center; 14 … an optic portion; 16 … peripheral edge portion; 18 … edge portions; 20 … eye black (cornea); 22 … white of the eye (sclera); 24 … heterochromatic edges (corneal edge portions, demarcation lines); 26 … cosmetic pattern areas; 28. 28a, 28b, 28c, 28d, 28e … tapered spokes; 30 … peripheral transparent region; 32 … non-colored portions; 36 ….

Claims

1. A contact lens for beauty, characterized in that,

in the peripheral portion on the outer peripheral side of the optical portion, a plurality of tapered spokes composed of a colored portion having a tapered shape with a tip whose width decreases from the outer peripheral side to the inner peripheral side of the lens are arranged in the lens circumferential direction to provide a cosmetic pattern region having an annular shape as a whole,

the outer diameter of the pattern region for beauty treatment is 11.0 to 14.0mm, the pattern region for beauty treatment is present over the inner circumference side and the outer circumference side of the corneal rim part of the wearing eye, the inner circumference end of the pattern region for beauty treatment is positioned on the cornea and the outer circumference end is positioned on the sclera,

on the other hand, the conical spokes adjacent in the lens circumferential direction are separated from each other and provided with non-colored portions extending over the entire length in the radial direction therebetween,

the minimum separation distance between the outer peripheral ends of the conical spokes adjacent to each other in the circumferential direction of the lens is 0.01 to 0.20mm,

and the width dimension of the non-colored portion becomes larger from the outer peripheral side toward the inner peripheral side of the lens.

2. The cosmetic contact lens of claim 1,

the width of the spoke at the outer circumferential end with the largest width in the conical spoke is 0.1-1.0 mm.

3. The cosmetic contact lens according to claim 1 or 2,

in the tapered spokes adjacent in the lens circumferential direction, the separation distance Da at the inner peripheral end and the separation distance Db at the outer peripheral end have a relationship of 0 < Db < Dc < Da with the separation distance Dc at the intermediate portion.

4. The cosmetic contact lens according to any one of claims 1 to 3,

regarding the separation distance Da of the inner peripheral end and the separation distance Db of the outer peripheral end of the tapered spokes adjacent in the lens circumferential direction, the width dimension of the inner peripheral end of the tapered spokes is smaller than the value of Da and the width dimension of the outer peripheral end is larger than the value of Db.

5. The cosmetic contact lens according to any one of claims 1 to 4,

the tapered spokes are formed of a base at the outer peripheral end and two oblique sides extending from both ends of the base toward the inner peripheral side, respectively, and each of the oblique sides is formed in a triangular shape longer than the base.

6. The cosmetic contact lens according to any one of claims 1 to 5,

the tapered spokes are colored portions having substantially constant luminance, hue, chroma, and density throughout the entirety.

7. The cosmetic contact lens according to any one of claims 1 to 6,

the tapered spokes are solid colored portions that are substantially uniform throughout.

8. The cosmetic contact lens according to any one of claims 1 to 7,

a plurality of the tapered spokes are concentrically arranged relative to the geometric center of the optic or the lens.

9. The cosmetic contact lens according to any one of claims 1 to 8,

the width dimension of the non-colored portion in the lens circumferential direction changes so as to gradually increase continuously from the lens outer circumferential side toward the lens inner circumferential side over the entire length of the non-colored portion in the radial direction.

10. The cosmetic contact lens according to any one of claims 1 to 9,

in the non-colored portion, the length dimension of the lens in the radial direction has a value of 0.5 to 4.5mm, and the difference Da-Db between the width dimension Da of the largest inner peripheral end and the width dimension Db of the smallest outer peripheral end has a value of 0.02 to 3.0 mm.