JP2013250351A - Contact lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a contact lens capable of expressing natural iris patterns and easily adjusting an impression and the like of the iris patterns.SOLUTION: A contact lens 10 having iris patterns 12 includes annular colored lines 13 having a single or double or more iris patterns, and each annular colored line comprises a zigzag line with regularity. In one period, the annular colored line has one or a plurality of small protrusions, and one or a plurality of large protrusions that are higher than the small protrusions. Preferably, a ratio of the height of the large protrusions to the small protrusions is 2 times or more and 5 times or less.

Description

  The present invention relates to a contact lens.

  Contact lenses with an iris pattern are used for cosmetic applications. As such contact lenses, in order to express a more natural iris pattern, those expressing an iris pattern with an outer burst pattern and an inner burst pattern, those expressing an iris pattern with a plurality of interconnected lines, etc. Various patterns have been developed (Japanese Patent Laid-Open No. 2000-66147, Japanese Patent Laid-Open No. 03-15020, Japanese Patent Laid-Open No. 2004-503815, Japanese Patent Laid-Open No. 2008-511025 and Japanese Patent Laid-Open No. 04- 505972).

  However, it is difficult to say that these contact lenses sufficiently express a natural iris pattern. In addition, since the iris pattern is formed in an irregular shape, for example, when trying to change the impression of the iris pattern according to the use etc., the pattern is adjusted by trial and error or empirical rules. It is not easy to adjust the iris pattern.

JP 2000-66147 A Japanese Patent Laid-Open No. 03-15020 JP-T-2004-503815 Special table 2008-511025 gazette Japanese National Publication No. 04-505972

  The present invention has been made based on the above circumstances, and an object thereof is to provide a contact lens that can express a natural iris pattern and can easily adjust the impression of the iris pattern and the like. .

The invention made to solve the above problems is
A contact lens having an iris pattern,
The iris pattern comprises one or more annular colored lines,
Each of the annular colored lines is composed of zigzag lines having regularity.

  In the contact lens, the iris pattern is provided with an annular colored line composed of zigzag lines having regularity, and a natural iris pattern can be expressed by such a shape. In addition, according to the contact lens, it is possible to easily adjust the impression of the iris pattern or the like by changing the period, shape, uneven height of the zigzag line having regularity.

  It is preferable that the said cyclic | annular colored line has one or several small convex part and one or several large convex part higher than this small convex part in one period. By forming each of the annular colored lines in this way, a more natural iris pattern can be expressed. Further, by adjusting the number and height ratio of the small convex portions and the large convex portions, the impression of the iris pattern can be easily adjusted.

  As the relationship between the small convex portion and the large convex portion, the ratio of the height of the large convex portion to the small convex portion is set to 2 to 5 times, or the highest large convex portions in the annular colored line Are preferably not present adjacent to each other. By forming or arranging the convex portions in this way, a more natural iris pattern can be expressed.

  It is preferable that the distance from the center to each recessed part in each said cyclic | annular coloring line is substantially the same. A more natural iris pattern can also be expressed by forming each of the annular colored lines in this way.

When the distance from the center of the annular colored line to the point on the shortest annular colored line is r, and the difference (R−r) between the radius (R) of the lens and the r is x,
It is preferable that the annular colored line on the outermost periphery is formed in a region surrounded by a circle having the same center and a radius of r + 0.15x and a circle having a radius of r + 0.95x.
By arranging the annular colored lines on the outermost circumference in this way, a more natural iris pattern can be expressed.

When the distance from the center of the annular colored line to the point on the shortest annular colored line is r, and the difference (R−r) between the radius (R) of the lens and the r is x,
It is also preferable that the innermost colored ring line is formed in a region surrounded by a circle having the same center and a radius of r and a circle having a radius of r + 0.8x.
A more natural iris pattern can be expressed also by arranging the innermost annular colored lines in this way.

  The number of periods of each annular colored line is preferably 2 or more and 40 or less. By setting such a cycle number, various patterns of iris patterns can be expressed in a more natural range.

  It is also preferred that the iris pattern has a double or more annular colored line. A plurality of annular colored lines enables a more natural expression of the iris pattern.

  The widths of the plurality of iris patterns can be different from each other. By forming the iris pattern in this way, a more natural iris pattern can be expressed.

  The width of the annular colored line on the outermost periphery is preferably 0.2 mm or more and 2.5 mm or less. By forming the iris pattern in this way, a more natural iris pattern can be expressed.

  It is preferable that the plurality of annular colored lines have a substantially similar shape. By forming the annular colored line in this way, a more natural iris pattern can be expressed.

  It is preferable that the iris pattern further includes an annular colored band, and an outer edge of the annular colored band is a substantially circular shape formed outside the annular colored line on the outermost periphery. The annular colored band represents a limbal ring that is the outer edge of a black eye. Therefore, a more natural iris pattern can be expressed because the iris pattern has such an annular colored band.

  It is preferable that the inner edge of the annular colored band is substantially circular. By doing so, it is possible to change the impression of the iris pattern, such as enhancing the contrast between the annular coloring band (limbal ring) and the annular coloring line.

  It is also preferable that the inner edge of the annular colored band is the innermost annular colored line. This also makes it possible to change the impression of the iris pattern, for example, by emphasizing the annular colored band (limbal ring).

  It is preferable that the color, density, or luminance of the annular colored line changes continuously or discontinuously within one annular colored line or between a plurality of annular colored lines. By forming the annular colored line in this way, it is possible to express a more natural iris pattern, and by adjusting the color, density, or brightness in this way, it is also possible to adjust the impression of the iris pattern, etc. It can be done easily.

  The change may be a decrease in density toward the outside. In this way, a more natural iris pattern can be expressed.

  It is also preferable that the change is a change in density in the circumferential direction. In this way, a more natural iris pattern can be expressed.

  Here, the “zigzag line” refers to a line formed by bending a straight line many times to the left and right. However, there may be a curved part such as a bent part or a discontinuous part. “Regularity” means that the zigzag line bends (projections and recesses) are formed regularly rather than randomly. “One period” means a minimum repeating unit of a zigzag line having periodicity and repeating the same. The “number of periods” refers to the number of the minimum repeating units in the zigzag line constituting one annular colored line. In addition, the shape and size of the entire contact lens and each part indicate the shape as a plane when the contact lens is viewed from the front, and the size in the shape as the plane, unless otherwise specified. And

  As described above, according to the contact lens of the present invention, a natural iris pattern can be expressed, and the impression and the like of the iris pattern can be easily adjusted. Therefore, the contact lens can be suitably used for cosmetic applications.

1 is a schematic plan view showing a contact lens according to a first embodiment of the present invention. (A) is a schematic plan view showing an annular colored line inside the contact lens according to the first embodiment, and (b) is a schematic plane showing an annular colored line outside the contact lens according to the first embodiment. FIG. It is a schematic diagram which shows the cyclic | annular coloring line which concerns on 2nd embodiment. It is a schematic diagram which shows the cyclic | annular coloring line which concerns on 3rd embodiment. It is a schematic diagram which shows the cyclic | annular coloring line which concerns on 4th embodiment. It is a schematic diagram which shows the cyclic | annular coloring line which concerns on 5th embodiment. It is a schematic diagram which shows the contact lens which concerns on 6th embodiment. It is a schematic diagram which shows the contact lens which concerns on 7th embodiment.

  Hereinafter, embodiments of the contact lens of the present invention will be described in detail with reference to the drawings as appropriate.

(First embodiment)
The contact lens 10 of FIG. 1 has a contact lens base material 11 and an iris pattern 12 applied to the surface of the contact lens base material 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.

  The iris pattern 12 includes a double annular coloring line 13 and an annular coloring band 14. The iris pattern 12 is formed in the peripheral region on the surface of the contact lens substrate 11.

  The annular colored line 13 includes an inner (innermost) annular colored line 13a and an outer (outermost) annular colored line 13b. Each annular colored line 13 is arranged on a concentric ring centered on the lens center 15.

  The inner annular colored line 13a and the outer annular colored line 13b are substantially similar with the lens center 15 as the center. By forming the annular colored line 13 in this way, a more natural iris pattern can be expressed. The similarity ratio at this time is not particularly limited, but the similarity ratio of another annular coloring line (annular coloring line 13b) when the innermost annular coloring line (annular coloring line 13a) is 1 is 1.02. The range is preferably 3 or less and more preferably 1.02 or more and 2 or less. With such a similarity ratio, a more natural iris pattern can be expressed.

  Each annular colored line 13 is composed of a zigzag line having regularity. In the contact lens 10, since the iris pattern 12 includes the annular colored line 13 having such a shape, a natural iris pattern can be expressed. Further, according to the contact lens 10, the impression of the iris pattern can be easily adjusted by changing the period of the zigzag line having regularity, the height of the unevenness, and the like. In addition, the distance from the lens center 15 (same point as the center of each annular coloring line) of each annular coloring line 13a, 13b changes periodically. That is, each annular colored line 13a has periodicity.

  As shown in FIG. 2, each annular colored line 13a, 13b has two concave portions 16a, 16b (a valley extending in the direction of the lens center 15) and two convex portions 17a, 17b, 18a in one cycle. , 18b (the top portion extending in the lens outer direction).

  More specifically, each of the annular colored lines 13a and 13b includes one small convex portion 17a and 17b and one large convex portion 18a and 18b higher than the small convex portion 17a and 17b in one cycle. Have By forming the annular colored lines 13 with such regularity, a more natural iris pattern can be expressed. Further, by adjusting the height ratio between the small convex portion and the large convex portion, the impression of the iris pattern can be easily adjusted.

  Each of the annular colored lines 13 is thus formed by repeating 24 cycles of one cycle each composed of one small convex portion and one large convex portion. That is, the number of periods of each annular colored line is 24. The number of periods of the annular colored line is preferably 2 or more and 40 or less, and more preferably 12 or more and 36 or less. A more natural iris pattern can be expressed by forming an annular colored line with the number of periods in the above range.

  Although it does not specifically limit as the height of the said small convex part 17a, 17b, 0.2 mm or more and 2.0 mm or less are preferable. The height of the large convex portions 18a and 18b is not particularly limited, but is preferably 0.5 mm or more and 3.0 mm or less. Note that the height of the small convex portion and the large convex portion is a distance from a circle inscribed in the concave portion of each annular colored line.

  Although it does not specifically limit as height of the large convex part with respect to the said small convex part, 2 times or more and 5 times or less are preferable, and 2.5 times or more and 4.5 times or less are more preferable. By setting such a height ratio, a more natural iris pattern can be expressed.

  In addition, in each cyclic | annular coloring line 13a, 13b, all are arrange | positioned so that a small convex part and a large convex part may become alternate. In this way, by arranging the large convex portions so as not to be adjacent to each other, a more natural iris pattern can be expressed.

  The distance from the center 15 to the plurality of recesses 16a in the annular colored line 13a is substantially the same (see FIG. 2 (a)). In other words, the plurality of concave portions 16 a in the annular coloring line 13 a exist on the same circle with the lens center 15 as the center. Further, the distance from the center 15 to the plurality of recesses 16b in the annular colored line 13b is also substantially the same (see FIG. 2B). In other words, the plurality of concave portions 16 b in the annular colored line 13 b exist on the same circle with the lens center 15 as the center. By forming the annular colored lines 13a and 13b as described above, a more natural iris pattern can be expressed.

  Although it does not specifically limit as a radius (r) of the circle | round | yen in which the recessed part 16a of the inner side annular colored line 13a exists, 3 mm or more and 7.5 mm or less are preferable, and 4 mm or more and 7 mm or less are more preferable. When the radius (r) is less than 3 mm, the iris pattern 12 tends 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 iris pattern 12 is positioned too far outside, or a sufficient width cannot be secured, so that a natural iris pattern is sufficiently expressed. It may not be possible.

  The distance from the center (the center of the lens 15 and the center of each annular colored line 13) to the point on the shortest annular colored line 13 is r (matches the radius of the circle in which the concave portion 16a of the inner annular colored line 13a exists), When the difference (R−r) between the radius (R) of the lens and r is x (matches the width of the annular colored band 14), the innermost annular colored line 13 (inner annular colored line 13a). Are preferably formed in a region surrounded by a circle having the same center 15 and a radius r and a circle having a radius r + 0.8x (see FIG. 2A). By arranging the annular colored line 13a in this way, a more natural iris pattern can be expressed.

  Further, the outermost ring coloring line 13 (outer ring coloring line 13b) at the outermost periphery is surrounded by a circle having the same center 15 and a radius of r + 0.15x and a circle having a radius of r + 0.95x. It is preferable that it is formed (refer FIG.2 (b)). By arranging the annular colored line 13b in this way, a more natural iris pattern can be expressed.

  Although it does not specifically limit as a width | variety of each cyclic | annular coloring line 13, It is preferable that the width | variety of the outer cyclic | annular coloring line 13b differs from the width | variety of the inner cyclic | annular coloring line 13a. Thus, a more natural iris pattern can be expressed by changing the width of the plurality of annular colored lines. In this case, it is more preferable that the width of the outermost annular colored line is larger than the width of the other annular colored lines. Further, in order to obtain a more natural iris pattern, the interval between the annular colored lines 13 is appropriately adjusted together with the width of each annular colored line 13 or independently of the width.

  The specific width of the outer colored ring line 13b (outermost annular colored line) is preferably 0.2 mm or greater and 2.5 mm or less, and more preferably 0.5 mm or greater and 2 mm or less. In addition, the width of the inner annular colored line 13a (other annular colored line) can be, for example, 0.05 mm or more and 2 mm or less. By setting the line width in such a range, a more natural iris pattern can be expressed.

  The color of each of the annular colored lines 13 is not particularly limited, and may be, for example, a chromatic color such as brown, green, or blue, or an achromatic color such as black or gray, so that the original iris color can be reproduced. it can. Moreover, the color of each annular colored line may be the same or different, and a plurality of colors may be applied to one annular colored line.

  It is preferable that the color, density, or luminance of the annular colored line 13 changes continuously or discontinuously. By forming the annular colored line 13 in this way, a more natural iris pattern can be expressed. In addition, by changing the color, density, or luminance of the annular colored line 13 in this way, it is possible to easily adjust the impression of the iris pattern.

  Among the changes in color, density or luminance in the annular colored line 13, it is preferable to decrease the density outward. In this way, a more natural iris pattern can be expressed. This change in color, density or brightness (decrease in density in the outward direction, etc.) may be changed in each annular coloring line, or the density of each annular coloring line does not change, and each annular coloring is changed. You may change between lines.

  The annular colored band 14 is provided so that the outer edge is formed outside the outer (outermost circumferential) annular colored line 13b. The outer edge of the annular colored band 14 is substantially circular. The annular colored band 14 represents a limbal ring that is an outer edge of a black eye. Therefore, a more natural iris pattern can be expressed when the iris pattern 12 includes such an annular colored band 14. Further, the contact lens 10 can make the outer diameter of the black eye large and clarify the outer edge clearly.

  The inner edge of the annular colored band 14 coincides with the inner annular colored line 13a. By doing in this way, an iris pattern can be emphasized, such as an annular colored band (limbal ring) being emphasized.

  That is, the inner diameter of the annular colored band 14 matches the radius (r) of the circle in which the concave portion 16a of the inner annular colored line 13a described above is present.

  The outer diameter of the annular colored band 14 is preferably 3.1 mm or greater and 7.5 mm or less. When the outer diameter is less than 3.1 mm, it becomes difficult to form the annular colored band 14 having a sufficient width. On the other hand, when the outer diameter is larger than 7.5 mm, the white area located on the outer peripheral side of the limbal ring is too small without being covered with the annular colored band 14 (limbal ring). In such a case, there is a possibility that the enhancement effect by the annular colored band 14 will be insufficient, and it will be unnatural, or it will be difficult to achieve the desired effect of improving the beauty of the eye.

  The outer edge of the annular colored band 14 may coincide with the outer edge of the contact lens 10 as shown in FIG. 1, but may be smaller than the outer edge of the contact lens 10. That is, the outer diameter of the annular colored band 14 can be made smaller than the radius (R) of the contact lens 10. By doing in this way, it becomes possible to set the outer diameter of the annular colored band 14 with a large degree of freedom regardless of the size of the contact lens 10.

  Although it does not specifically limit as the width | variety (difference of an outer diameter and an internal diameter) of the cyclic | annular colored belt | band | zone 14, 0.1 mm or more and 4.5 mm or less are preferable, and 0.5 mm or more and 2.5 mm or less are more preferable. By setting the width to 0.1 mm or more, it is possible to improve the cosmetic effect such as making the black eye look larger. On the other hand, by setting it to 4.5 mm or less, it is possible to effectively prevent the limbal ring from becoming unnatural in appearance.

  Although it does not specifically limit as a color of the cyclic | annular coloring band 14, It is preferable that it is a color different from the cyclic | annular coloring line 13. FIG. By configuring the annular coloring line 13 and the annular coloring band 14 with different colors, a more natural iris pattern can be expressed, and each pattern is emphasized.

  The color of the annular colored band 14 is preferably black or brown so as to naturally express human black eyes. The hue of the annular colored band 14 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.

  The annular colored band 14 can be formed with a dot pattern composed of a plurality of colored dots. Further, the annular colored band 14 may be formed by solid coating instead of dots.

  The annular colored band 14 can 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. Moreover, you may provide the area | region where the density | concentration was made constant by the radial direction predetermined width | variety in the inner peripheral part of the cyclic | annular coloring band 14. By coloring the annular coloring band 14 at such a concentration, a more natural-looking limbal can be expressed. The change in density of the annular colored band 14 can be adjusted by changing the size, number density, and density of the dots themselves.

  The method for manufacturing the contact lens 10 is not particularly limited. For example, the iris pattern 12 may be colored on the surface of the contact lens base 11 by a known method. Examples of the coloring method of the iris pattern 12 include photographic printing, screen printing, pad printing, ink jet printing, and the like, addition of a monomer when forming a contact lens base material, and other hand-drawn methods. Among these, in consideration of the spherical surface of the lens substrate 11, mass productivity, coloring accuracy, color reproducibility, and the like, printing is preferable, and pad printing or inkjet printing is more preferable.

  As a method 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, and the contact lens base material 11 is transferred. The dot pattern colorant is transferred.

  Ink jet printing uses a piezo element or the like as an actuator to blow out a colorant from a large number of minute nozzles and directly attach it to the surface of the contact lens substrate 11 that becomes 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 the iris pattern 12 as a colored layer between the front and back surfaces of the contact lens substrate 11 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.

(Second embodiment)
3 has four small convex portions 27a and 27b and one large convex portion 28a and 28b, respectively, in one cycle. The number of periods of each annular colored line 23 is twelve. When the annular colored line has one or two, preferably one small convex part (see FIG. 1) with respect to one large convex part in one cycle (see FIG. 1), the zigzag shape of the annular colored line becomes more prominent. be able to. On the other hand, when the annular colored line has three or more small convex portions with respect to one large convex portion in one cycle (see FIG. 3), the color in the case of having an annular colored band (limbal ring) (E.g. black) can stand out. In this way, the impression of the iris pattern can be changed by adjusting the number ratio between the large convex portion and the small convex portion.

(Third embodiment)
The double annular colored lines 33 in FIG. 4 are zigzag lines each consisting of a curve. The number of periods of each annular colored line 33 is 20 respectively. Thus, the impression of an iris pattern can be changed by changing the shape of the annular colored line.

(Fourth embodiment)
Each of the double annular colored lines 43 in FIG. 5 is a discontinuous zigzag line. That is, the density of each annular colored line 43 changes discontinuously. In addition to the density, the color and brightness may be changed discontinuously. By forming an annular colored line in this way, a more natural iris pattern can be expressed, and by adjusting the color, density, or brightness in this way, it is easy to adjust the impression of the iris pattern, etc. Can be done.

(Fifth embodiment)
The double annular colored line 53 in FIG. 6 includes an inner annular colored line 53a and an outer annular colored line 53b. The outer annular colored line 53b has a shape obtained by enlarging and rotating the inner annular colored line 53a. For this reason, the inner annular colored line 53a and the outer annular colored line 53b partially overlap each other. Even with such an annular colored line, an iris pattern can be expressed.

(Sixth embodiment)
The contact lens 60 of FIG. 7 includes a contact lens base material 11 and an iris pattern 62 applied to the surface of the contact lens base material 11. The contact lens substrate 11 is the same as that shown in FIG.

  The iris pattern 62 includes an annular coloring line 63 made of a zigzag line and an annular coloring band 64. The annular coloring band 64 is provided outside the annular coloring line 63. The iris pattern 62 further includes a colored region 69 surrounded by a circle connecting the concave portions of the annular colored line 63 and the annular colored line 63.

(Seventh embodiment)
The contact lens 70 of FIG. 8 has a contact lens base material 11 and an iris pattern 72 applied to the surface of the contact lens base material 11. The contact lens substrate 11 is the same as that shown in FIG.

  The iris pattern 72 includes an annular colored line 73 made of a zigzag line and an annular colored band 74. The annular coloring band 74 is formed so that the outer edge is outside the annular coloring line 73 and the inner edge is inside the annular coloring line 73. Further, the outer edge and the inner edge of the annular colored band 74 are both substantially circular. In the annular coloring band 74, the inner region and the outer region of the annular coloring line 73 can be colored with different colors.

  Like the contact lens 60 and the contact lens 70, by changing the shape of the annular colored band in the iris pattern, the impression can be changed variously, such as emphasizing each pattern of the ring ring and iris. Can do.

  The contact lens of the present invention is not limited to the above embodiments. For example, in the contact lens of the present invention, the iris pattern may be composed of triple or more annular colored lines. In order to express a more natural iris pattern, the iris pattern preferably has a double or more annular colored line. The iris pattern may not have an annular colored band. Moreover, the large convex part of different height may be formed in one cyclic | annular coloring line. Furthermore, although the annular colored line has regularity, it may consist of a zigzag line that does not have periodicity. As such a zigzag line, for example, the height of the convex portion is regularly gradually increased, but the period number is 1, that is, there is no periodicity. Such various variations can also be used to adjust the impression of the iris pattern.

  As described above, the contact lens of the present invention can express a natural iris pattern and can easily adjust the impression and the like of the iris pattern. Therefore, the contact lens can be suitably used for cosmetic applications.

10, 60, 70 Contact lens 11 Contact lens substrate 12, 62, 72 Iris pattern 13, 13a, 13b, 23, 33, 43, 53, 53a, 53b, 63, 73 Annular coloring line 14, 64, 74 Annular coloring Band 15 Center 16a, 16b Concave part 17a, 17b, 27a, 27b Small convex part 18a, 18b, 28a, 28b Large convex part 69 Colored area

Claims (18)

A contact lens having an iris pattern,
The iris pattern comprises one or more annular colored lines,
A contact lens, wherein each annular colored line is a zigzag line having regularity.   The contact lens according to claim 1, wherein the annular colored line has one or a plurality of small convex portions and one or a plurality of large convex portions higher than the small convex portions in one cycle.   The contact lens according to claim 2, wherein a ratio of a height of the large convex portion to the small convex portion is not less than 2 times and not more than 5 times.   The contact lens according to claim 2, wherein the highest large convex portions in the annular colored line are not adjacent to each other.   The contact lens according to any one of claims 1 to 4, wherein the distance from the center to each concave portion in each of the annular colored lines is substantially the same. When the distance from the center of the annular colored line to the point on the shortest annular colored line is r, and the difference (R−r) between the radius (R) of the lens and the r is x,
6. The annular colored line on the outermost periphery is formed in a region surrounded by a circle having the same center and a radius of r + 0.15x and a circle having a radius of r + 0.95x. Contact lens of any one of these. When the distance from the center of the annular colored line to the point on the shortest annular colored line is r, and the difference (R−r) between the radius (R) of the lens and the r is x,
7. The innermost colored ring line is formed in a region surrounded by a circle having the same center and a radius of r and a circle having a radius of r + 0.8x. The contact lens of any one.   The contact lens according to any one of claims 1 to 7, wherein the number of periods of each of the annular colored lines is 2 or more and 40 or less.   The contact lens according to claim 1, wherein the iris pattern includes double or more annular colored lines.   The contact lens according to claim 9, wherein the plurality of annular colored lines have different widths.   The contact lens according to claim 9 or 10, wherein a width of the annular colored line on the outermost periphery is 0.2 mm or more and 2.5 mm or less.   The contact lens according to claim 9, wherein the plurality of annular colored lines have a substantially similar shape. The iris pattern further comprises an annular colored band,
The contact lens according to any one of claims 1 to 12, wherein an outer edge of the annular colored band is a substantially circular shape formed outside the annular colored line on the outermost periphery.   The contact lens according to claim 13, wherein an inner edge of the annular colored band is substantially circular.   The contact lens according to claim 13, wherein an inner edge of the annular colored band is an innermost annular colored line.   The color, density, or brightness of the annular colored line changes continuously or discontinuously within one annular colored line or between a plurality of annular colored lines. Contact lenses described in 1.   The contact lens according to claim 16, wherein the change is a decrease in density outward. The contact lens according to claim 16, wherein the change is a change in density in the circumferential direction.

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