JP2013250350A - Contact lens and method of manufacturing contact lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a contact lens applied with a pattern giving a depth impression and a solid impression without a complicated manufacture process, and a method of manufacturing such a contact lens.SOLUTION: A contact lens includes one or plural first patterns, and one or plural second patterns which pair off with the first patterns and are colored with a different color. A method of manufacturing contact lens includes a step of forming a first pattern and a second pattern having mutually different colors on the surface of a contact lens base material.

Description

  The present invention relates to a contact lens having a pattern and a method for manufacturing the contact lens.

  Contact lenses with patterns by coloring are used for cosmetics, medical applications, and cosmetics, etc., and other patterns can be used to easily handle contact lenses for correcting vision. It also has a function to do. As such a contact lens, a lens having a lens periphery colored with a plurality of dots has been developed (see Japanese Patent Application Laid-Open Nos. 2001-311915 and 2001-311916). However, the conventional contact lens cannot express a sense of depth or a three-dimensional feeling with the plurality of dots.

  On the other hand, as a contact lens that expresses a sense of depth, a contact lens having a layer structure of at least three layers in which colored layers and transparent layers are alternately arranged has been developed (see Japanese Patent Application Publication No. 2010-529505). However, since the contact lens having such a multilayer structure is manufactured by laminating each layer, the manufacturing process becomes complicated and the manufacturing cost increases.

JP 2001-311915 A JP 2001-311916 A Special table 2010-529505 gazette

  The present invention has been made on the basis of the circumstances as described above. A contact lens provided with a pattern having a sense of depth and a three-dimensional effect without going through a complicated manufacturing process, and the manufacture of such a contact lens. It aims to provide a method.

The invention made to solve the above problems is
A contact lens having one or a plurality of first patterns and one or a plurality of second patterns that are paired with the first patterns and colored in different colors.

  According to the contact lens, the first pattern and the second pattern that are paired and colored in different colors as described above have a depth feeling and a three-dimensional feeling due to the combination of the first pattern and the second pattern. can do. For example, by reducing the brightness and saturation of the second pattern as compared with the first pattern, there is an effect that the first pattern appears to float. In addition, since the first and second patterns can be provided relatively easily by printing on the surface of the contact lens substrate, a pattern having a sense of depth or the like can be applied without going through a complicated manufacturing process. .

  The second pattern is a position where the corresponding first pattern is moved in the circumferential direction with respect to the lens center, a position where the lens is moved in the radial direction with respect to the lens center, or a position where these are moved in the synthesis direction (moved in the circumferential direction, And a position moved in the radial direction). By forming the second pattern at the position where the first pattern is moved in such a direction as described above, it is possible to more effectively express a stereoscopic effect or the like.

  The second pattern is preferably substantially the same shape or substantially enlarged similar shape to the corresponding first pattern. As described above, even when the first pattern and the second pattern have substantially the same shape or similar shapes, it is possible to more effectively express the stereoscopic effect or the like.

  It is preferable to have a portion where the first pattern and the second pattern overlap. Further, the first pattern and the second pattern may have different brightness or saturation. As described above, the three-dimensional effect or the like can be made more conspicuous by having a portion where two patterns overlap or by making the brightness and saturation different.

  It is preferable that the first pattern and the second pattern are formed in an annular region centered on the lens center. By forming the first and second patterns in such an annular region, it is possible to suppress the obstruction of the field of view when worn, and to effectively express the sense of depth and stereoscopic effect of this pattern.

  The first pattern and the second pattern are preferably composed of one or more colored dots. As described above, since the first and second patterns are made of colored dots, a stereoscopic effect or the like is more easily expressed due to a difference in color. In addition, these patterns can be formed by dot printing, and manufacturing is easy.

  The manufacturing method of the contact lens of this invention has the process of forming the 1st pattern and 2nd pattern from which a color mutually differs on the surface of a contact lens base material. According to the manufacturing method, a contact lens having a sense of depth and the like can be obtained in a relatively easy process.

  Here, different “colors” mean that at least one of color, brightness, and saturation is different. Further, the length refers to the length viewed from the normal direction at the lens center 14 (length in plan view).

  As described above, the contact lens of the present invention can be suitably used for cosmetics and the like because the applied pattern has a sense of depth and a three-dimensional effect. Further, according to the contact lens manufacturing method of the present invention, it is possible to obtain a contact lens provided with a pattern having such a sense of depth and stereoscopic effect without going through a complicated manufacturing process.

1 is a schematic plan view showing a first embodiment of a contact lens of the present invention. It is a typical top view which shows 2nd embodiment of the contact lens of this invention. It is a typical top view which shows 3rd embodiment of the contact lens of this invention. It is a typical top view showing a 4th embodiment of a contact lens of the present invention. It is a typical top view showing a fifth embodiment of a contact lens of the present invention. It is a typical top view showing a 6th embodiment of a contact lens of the present invention.

  Hereinafter, embodiments of a contact lens and a manufacturing method thereof according to the present invention will be described in detail with reference to the drawings as appropriate.

<Contact Lens>
(First embodiment)
The contact lens 10 of FIG. 1 includes a contact lens base 11 and a plurality of first patterns 12 and a plurality of second patterns 13 applied to the surface of the contact lens base 11.

  The shape of the contact lens 10 is the same as that of a conventional contact lens. Specifically, the contact lens 10 has a partial spherical shell shape including a surface having a spherical convex shape and a back surface having a spherical concave shape so as to be worn superimposed on the surface of the cornea of the eye. is there.

  The size of the contact lens 10 is not particularly limited, and can be the same size as a known contact lens.

  The material of the contact lens substrate 11 is not particularly limited, and a known material can be used. Specifically, in addition to hard lenses such as RGP lenses (oxygen-permeable lenses) and PMMA (polymethyl methacrylate), water-containing materials such as PHEMA (polyhydroxyethyl methacrylate) and non-water-containing materials such as acrylic elastomers or silicones Soft contact lenses having high oxygen permeability such as hydrogel can be used. In particular, a soft contact lens can be suitably used because it is generally larger in diameter than a hard contact lens and has a large area on which a pattern can be applied.

  The contact lens 10 (contact lens base material 11) may have specific optical characteristics with respect to the central portion superimposed on the cornea. In this case, the contact lens 10 can be used as a vision correction contact lens having a correction function for abnormal vision such as myopia, hyperopia, astigmatism, and presbyopia. The contact lens 10 may be a non-sight correction contact lens that does not have optical characteristics at the central portion. When the contact lens 10 is a non-sight correction contact lens, it can be used for cosmetics, for example.

  Each first pattern 12 has a shape composed of a heart-shaped outer edge. That is, only the outer edge of the heart shape is colored, and the inside is transparent (non-colored). Further, nine first patterns 12 are formed at equal intervals in an annular region centered on the lens center 14.

  Each second pattern 13 also has a shape composed of a heart-shaped outer edge, like the first pattern 12. The first pattern 12 and the second pattern 13 have substantially the same shape. In addition, the 1st pattern 12 and the 2nd pattern 13 can be made into the completely same shape.

  Nine second patterns 13 are also formed at equal intervals in an annular region centered on the lens center 14. That is, the second pattern 13 is formed at a position where the corresponding first pattern 12 is moved in the circumferential direction with reference to the lens center 14. The amount of movement in the circumferential direction is not particularly limited, but is preferably 1 ° to 30 °, and more preferably 3 ° to 20 °. By setting it as such a moving amount | distance, it can express so that the 2nd pattern 13 may become a shadow of the corresponding 1st pattern 12, and a three-dimensional effect etc. can be improved.

  The first patterns 12 and the second patterns 13 are in pairs as described above, and are colored with different colors. In addition, each 1st pattern 12 is the same color, and each 2nd pattern is also the same color. The different color means that at least one of color, lightness, and saturation is different, but it is preferable that the lightness or saturation is different, and it is more preferable that the colors are the same and the lightness and / or saturation are different. By doing in this way, the three-dimensional effect and perspective of the pattern which consists of the 1st pattern 12 and the 2nd pattern 13 increase more. For example, when the brightness and saturation of the second pattern 13 are set lower than those of the first pattern 12, the first pattern 12 appears to float.

  The first pattern 12 and the second pattern 13 may have the same color, but for example, gradation may be applied to each first or second pattern. Specifically, the first or second pattern can be colored so that the light transmittance increases from the inner peripheral side to the outer peripheral side. For example, the first pattern 12 is made a single color, and the second pattern 13 is colored so that the light transmittance increases from the inner peripheral side to the outer peripheral side, thereby enhancing the three-dimensional effect and the sense of depth.

  The first pattern 12 and the second pattern 13 can be formed by a dot pattern composed of one or a plurality of colored dots. In addition, when forming the 1st pattern 12 and the 2nd pattern 13 by a some dot, you may change the size of a some dot along a radial direction. By doing in this way, the depth feeling etc. of the solid pattern which consists of the 1st pattern 12 and the 2nd pattern 13 can also be raised further. The first pattern 12 and the second pattern 13 may be formed by solid coating instead of dots.

  The radius (r) of the inner edge of the region (annular region) where the first pattern 12 and the second pattern 13 are present is not particularly limited, but is preferably 3 mm or more and 7.5 mm or less, and more preferably 4 mm or more and 7 mm or less. When the radius (r) is less than 3 mm, the annular region (the first pattern 12 and the second pattern 13) is likely to overlap the pupil when worn, which may affect the visual field. On the other hand, when the radius (r) exceeds 7.5 mm, the annular region (the first pattern 12 and the second pattern 13) is too much outside, or a sufficient width cannot be secured. In some cases, it may not be possible to provide a sufficient sense of depth.

  The inner edge of the annular region is a circle inscribed in the first pattern 12 and the second pattern 13 and centered on the lens center 14.

  The width (w) of the annular region is not particularly limited, but is preferably 0.01 mm to 4 mm, and more preferably 1.5 mm to 3 mm. By setting this width within the above range, it is possible to impart a sufficient depth feeling or the like to the pattern while suppressing the influence on the visual field.

  Note that the width (w) of the annular region refers to the difference between the radius of the outer edge and the radius of the inner edge of the annular region. The outer edge of the annular region is a circle that circumscribes the first pattern 12 and the second pattern 13 and that is centered on the lens center 14.

  When the contact lens 10 is used as a vision correction contact lens, it is preferable to form the first pattern 12 and the second pattern 13 outside the central portion having optical characteristics.

  Since the contact lens 10 has the first pattern 12 and the second pattern 13 which are paired and colored in different colors in this way, the combination of the first pattern 12 and the second pattern 13 makes the sense of depth. And a three-dimensional effect. In particular, the second pattern 13 is formed at a position where the corresponding first pattern 12 is moved in the circumferential direction with respect to the lens center 14, and the second pattern 13 is substantially the same shape as the corresponding first pattern 12. That the first pattern 12 and the second pattern 13 overlap each other, the first pattern 12 and the second pattern 13 are formed in an annular region around the lens center 14, etc. Thus, it is possible to effectively create a three-dimensional feeling and a depth feeling.

(Second embodiment)
The contact lens 20 of FIG. 2 includes a contact lens substrate 11, a plurality of first patterns 12 and a plurality of second patterns 13 provided on the surface of the contact lens substrate 11, and a limbal ring 25. Since the contact lens base material 11, the first pattern 12, and the second pattern 13 are the same as those of the contact lens 10 in FIG.

  The limbal ring 25 is provided in an annular region where the first pattern 12 and the second pattern 13 are present. The above-mentioned limbal ring is an annular colored band that spreads on the inner peripheral side and the outer peripheral side across the boundary line of the black eye and white eye of the eye to be worn. Unlike FIG. 2, the limbal ring may be provided so as not to overlap the first pattern and the second pattern, or may be provided so as to overlap a part of the first pattern and the second pattern.

  Since the contact lens 20 has the limbal ring 25, the outer diameter of the black eye can be increased and the outer edge can be clearly emphasized for clarity. In addition, since the contact lens 20 has a limbal ring 25 together with a pattern having a sense of depth (the first pattern 12 and the second pattern 13), it is possible to express a more natural sense of depth and stereoscopic effect as a whole. Further, the cosmetic effect and the like can be further enhanced.

  The size of the limbal ring 25 is not particularly limited, but it is preferable to set the radial width dimension within a range of 0.01 mm to 4.0 mm. By setting the radial width dimension of the limbal ring 25 to 0.01 mm or more, it is possible to improve the cosmetic effect such as increasing the pupil diameter. On the other hand, when the thickness is 4.0 mm or less, it is possible to effectively prevent the limbal ring from becoming unnatural in appearance. The limbal ring 25 is preferably formed with a width in the radial direction of 0.01 to 4.0 mm, more preferably 0.01 to 4.0 in order to sufficiently obtain a desired cosmetic effect and the like. It is formed with a radial width dimension of 2.5 mm.

  The center of the width of the limbal ring 25 is preferably provided within a range of 4.5 mm to 7.5 mm from the lens center 14. The inner diameter dimension of the limbal ring 25 is preferably φ8 mm or more, and the outer dimension is preferably φ15 mm or less. In the case of a general human eye, if the inner diameter of the limbal ring 25 is smaller than φ8 mm, the limbal ring may reach the pupil and adversely affect vision. On the other hand, if the outer diameter of the limbal ring is larger than 15 mm, the white-eye region that is not covered by the limbal ring and is positioned on the outer peripheral side of the limbal ring becomes too small. In such a case, the color emphasis effect on white eyes by limbal ring or black eyes, and on the contrary, the color emphasis effect on white eyes by black eyes or limbal ring becomes inadequate, There is a possibility that the intended effect of improving the beauty of the eye will not be sufficiently achieved. It is more preferable that the limbal ring has an inner diameter of φ9.0 mm or more and an outer diameter of φ15 mm or less.

  The limbal ring 25 can be formed with a dot pattern composed of a plurality of colored dots. When the limbal ring 25 is formed with a plurality of dots, the size of the plurality of dots may be changed along the radial direction. By doing in this way, a feeling of depth etc. can also be expressed to the limbal ring 25. The limbal ring 25 may be formed by solid coating instead of dots.

  The limbal ring 25 may have the same concentration in the entire region, but the concentration in the outer peripheral portion may be decreased from the inner peripheral side to the outer peripheral side. In addition, a region where the concentration is constant with a predetermined radial width may be provided in the inner peripheral portion of the limbal ring 25. By coloring the limbal ring 25 at such a density, a more natural-looking limbal can be expressed. The change in density of the limbal ring 25 can be adjusted by changing the size, number density, density of the dots themselves, and the like.

  The color of the limbal ring 25 is preferably black or brown so as to naturally express a human black eye. The hue of the limbal ring 25 is grasped by the Munsell color system, for example. Specifically, in the Munsell hue circle, a total of five (R, YR, Y, GY, G, BG, B, PB, P, RP) hues are provided in the middle of each of the five basic colors. , It is preferable that the hue is YR and the lightness is 0 or more and 5 or less as the black or brown system. Further, colors including G or B (GY, G, BG, B, PB) are also preferable, and these dark colors are more preferable.

(Third embodiment)
The contact lens 30 of FIG. 3 includes a contact lens base material 11 and a plurality of first patterns 32 and a plurality of second patterns 33 formed on the surface of the contact lens base material 11. The contact lens 30 is the same as the contact lens 10 of FIG. 1 except for the positional relationship between the plurality of first patterns 32 and the plurality of second patterns 33.

  The second pattern 33 is formed at a position where the corresponding first pattern 32 is moved in the circumferential direction with reference to the lens center 14. The amount of movement in the circumferential direction is larger than that of the contact lens 10 of FIG. 1 (movement amount 20 °). In the contact lens 30, the first pattern 32 and the second pattern 33 are alternately arranged in an annular region centered on the lens center 14 by using such a movement amount.

  Since the contact lens 30 also has such a first pattern 32 and a second pattern 33, a three-dimensional pattern is expressed by these, and a three-dimensional feeling, a depth feeling, and the like can be imparted.

(Fourth embodiment)
The contact lens 40 of FIG. 4 includes a contact lens base 11 and a plurality of first patterns 42 and a plurality of second patterns 43 formed on the surface of the contact lens base 11. The contact lens 40 is the same as the contact lens 10 of FIG. 1 except for the positional relationship between the plurality of first patterns 42 and the plurality of second patterns 43.

  The second pattern 43 is formed at a position where the corresponding first pattern 42 is moved in the radial direction with reference to the lens center 14. The amount of movement is not particularly limited, but is preferably 0.1 mm or more and 2 mm or less. Moreover, it is preferable to set it as the movement amount in the range which has the part which the said 1st pattern 42 and the 2nd pattern 43 overlap.

  Since the contact lens 40 also has such a first pattern 42 and a second pattern 43, a three-dimensional pattern is expressed by these, and a three-dimensional effect, a sense of depth, and the like can be imparted.

(Fifth embodiment)
The contact lens 50 in FIG. 5 includes a contact lens base material 11, and a plurality of first patterns 52, a plurality of second patterns 53, and a plurality of third patterns 54 formed on the surface of the contact lens base material 11. . The contact lens 50 is the same as the contact lens 10 of FIG. 1 except for the plurality of first patterns 52, second patterns 53, and third patterns 54.

  Each first pattern 52 has a heart shape in which the entire region (outer edge and inner side) is colored. In addition, nine first patterns 52 are formed at equal intervals in an annular region centered on the lens center 14.

  Each second pattern 53 is formed at the same position as the corresponding first pattern 52, and has a heart-like shape, like the first pattern 52. The second pattern 53 is an enlarged similar shape to the first pattern 52.

  Each third pattern 54 is formed at the same position as the corresponding first pattern 52 and second pattern 53, and has a heart-like shape, like the first pattern 52. The third pattern 54 is an enlarged similar shape to the first pattern 52. That is, the second pattern 53 is arranged on the third pattern 54, and the first pattern 52 is arranged thereon.

  The first pattern 52, the second pattern 53, and the third pattern 54 are colored with different colors. Here, for example, in the first pattern 52, the second pattern 53, and the third pattern 54, the same hue can be used, and each can be colored so as to gradually decrease or increase the brightness or saturation. By doing in this way, the three-dimensional effect of the pattern formed with the 1st-3rd pattern and a feeling of depth can be expressed more effectively.

(Sixth embodiment)
The contact lens 60 in FIG. 6 includes a contact lens base material 11 and a first pattern 62 and a second pattern 63 applied to the surface of the contact lens base material 11. The contact lens 60 is the same as the contact lens 10 of FIG. 1 except for the first pattern 62 and the second pattern 63.

  The first pattern 62 is formed of an annular colored line with the lens center 14 as the center, and expresses an iris pattern. This annular colored line has periodicity, and this one period is composed of random zigzag lines.

  The second pattern 63 has the same shape as the first pattern 62 and is formed at a position where the first pattern is moved in the circumferential direction. The second pattern 63 is colored with a different color from the first pattern 62.

  According to the contact lens 60, an iris pattern having a three-dimensional effect or a depth feeling can be expressed by expressing the iris pattern with the first pattern 62 and the second pattern 63.

(Other embodiments)
The contact lens of the present invention is not limited to the first to sixth embodiments. For example, as the first and second patterns, in addition to the heart shape and the iris pattern, a shape such as a circle, a star, a wedge shape, a floral pattern, an ellipse, and a semicircle can be used. In addition, the second pattern may be formed at a position (the combined direction of the circumferential direction and the radial direction) moved in the circumferential direction with the corresponding first pattern as a reference to the lens center and moved in the radial direction. Furthermore, you may arrange | position so that a 1st pattern and a 2nd pattern may not overlap, and you may arrange | position in the center part of a contact lens base material. What is necessary is just to set suitably the shape and arrangement | positioning of this 1st and 2nd pattern according to a use etc.

<Contact lens manufacturing method>
The method for producing the contact lens is not particularly limited, and for example, a method including a step of forming a first pattern and a second pattern having different colors on the surface of the contact lens substrate can be employed. According to the manufacturing method, a contact lens having a sense of depth and the like can be obtained in a relatively easy process.

  Examples of the method for forming the first pattern and the second pattern include printing such as photographic printing, screen printing, pad printing, and ink jet printing, addition of a monomer when forming a contact lens base material, and other hand-drawn methods. be able to. Among these, in consideration of the spherical surface of the lens substrate, mass productivity, coloring accuracy, color reproducibility, and the like, printing is preferable, and pad printing or inkjet printing is more preferable.

  As a method of using pad printing, for example, after filling a dot pattern formed by etching treatment on a metal plate with a colorant, the dot pattern colorant is transferred using a silicon pad, , By transferring the colorant of the dot pattern.

  Ink jet printing uses a piezo element or the like as an actuator to eject a colorant from a large number of minute nozzles and directly adheres it to the surface of a contact lens base material to be a colored surface. Such ink jet printing is particularly suitable because it does not require pressing of a pad or the like to the contact lens substrate, and fine dots can be formed with high accuracy.

  In addition, as a manufacturing method other than the above method, a method of arranging a dot pattern as a colored layer between the front and back surfaces of the contact lens base material can be mentioned. As a specific method, there is a method in which a colored layer is provided on the surface of the half layer on the front surface or the back surface side, and the remaining half layer is adhered. By doing so, it is possible to obtain a contact lens having a laminated structure in which a transparent layer is provided on each side of the colored layer. The colored layer can be formed by printing as described above, or can be formed as a colored resin layer using a colored molding monomer in which a colorant is dissolved. In addition, although it depends on the forming method of the colored layer, translucency, etc., when employing a laminated structure composed of at least one colored layer and a transparent layer, the thickness of each transparent layer is set to 5 μm to 300 μm. In addition, the thickness of each colored layer is preferably 0.2 μm to 100 μm. In particular, when a printing layer by pad printing, ink jet printing or the like is adopted as the colored layer, it is preferable that the thickness of the printing layer is set smaller than the transparent layer.

  As described above, the contact lens of the present invention can be suitably used for cosmetics and the like because the applied pattern has a sense of depth and a three-dimensional effect.

10, 20, 30, 40, 50, 60 Contact lens 11 Contact lens substrate 12, 32, 42, 52, 62 First pattern 13, 33, 43, 53, 63 Second pattern 14 Lens center 25 Rimbal ring 54 3rd pattern

Claims (8)

  A contact lens having one or a plurality of first patterns and one or a plurality of second patterns that are paired with the first patterns and colored in different colors.   2. The contact lens according to claim 1, wherein the second pattern is formed at a position moved in a circumferential direction, a radial direction, or a combination direction thereof with respect to the corresponding first pattern as a lens center reference.   The contact lens according to claim 1, wherein the second pattern has substantially the same shape or a substantially enlarged similar shape to the corresponding first pattern.   The contact lens according to claim 1, wherein the contact lens has a portion where the first pattern and the second pattern overlap.   5. The contact lens according to claim 1, wherein the first pattern and the second pattern have different brightness or saturation.   The contact lens according to any one of claims 1 to 5, wherein the first pattern and the second pattern are formed in an annular region centered on the lens center.   The contact lens according to claim 1, wherein the first pattern and the second pattern are made of one or a plurality of colored dots. A method for producing a contact lens, comprising: forming a first pattern and a second pattern having different colors on a surface of a contact lens substrate.

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