JP2016189034A - Color contact lens set and manufacturing method for color contact lens set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a novel color contact lens set, and its manufacturing method that make it possible to manufacture and provide a color contact lens including a ring-shaped coloring area composed of objectively suitable colors with respect to iris colors in wearers, and capable of making an outer diameter of the iris of the wearer look large with a natural appearance so as to allow the number of standards of fewer colors to efficiently suit to a broad range of the iris colors.SOLUTION: In a ring-shape coloring area 18 having an outer diameter dimension larger than an outer diameter of an iris 26, and an inner diameter dimension smaller than the outer diameter of the iris 26, a plurality of categories of color contact lenses 10 having a mutually different color set by saturation and brightness being made different is mutually combined to thereby be adapted as a color contact lens set. In such a colouring area 18 having the mutually different color set, a value of the brightness is adapted so as to get larger as a value of the saturation gets larger.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a color contact lens provided with a colored region, and particularly includes a ring-shaped colored region having an outer diameter larger than the outer diameter of the iris. The present invention relates to a color contact lens that can make the cornea look larger on the appearance and related technology.

  Conventionally, as a kind of contact lens, a color contact lens is known in which a ring-shaped coloring region is provided, and the coloring region covers the outer peripheral edge of the iris so that the coloring region protrudes to the outer peripheral side of the iris. Yes. For example, those described in Japanese Patent Application Laid-Open No. 2004-21244 (Patent Document 1).

  Such a color contact lens is expected to have a cosmetic effect and the like because the outer diameter of the iris and cornea can be increased in appearance when worn.

  By the way, with conventional color contact lenses, the outer periphery of the ring-shaped colored region is made conspicuous, such as black, on the conjunctiva for the purpose of improving the cosmetic effect by making the outer edge of the iris more prominent when worn. It was easy to see.

  However, it has been found that some users have the potential awareness that they do not want others to know that they are wearing color contact lenses. For such a user, the conventional color contact lens provided with a colored region having a conspicuous color could not be satisfied.

  Therefore, providing a color contact lens with a colored region that looks natural and inconspicuous when worn as an idea of reversing the conventional color contact lens aiming at the cosmetic effect by making the outer periphery of the cornea stand out. The present inventor newly examined. However, the iris color in the human eye varies, and so on.

  In other words, it may be possible to provide a custom-made coloring, but this is not practical because it takes too much time, labor, and cost to manufacture. In particular, it has been found that the iris color of the human eye is not only different from individual to individual, but also different from part to part of the same person.

  In addition, since the conventional color contact lens is determined by a trial sensory evaluation regarding the color, an appropriate color that efficiently and objectively matches an iris that varies depending on an individual or a part is determined. That was extremely difficult.

JP 2004-21244 A

  Here, the present invention has been made in the background as described above, and the problem to be solved is a ring-shaped coloring composed of colors that objectively match the iris color of the wearer. A new area that can be mass-produced with a wide range of iris colors with a small number of standard colors, while the outer diameter of the wearer's iris can be shown larger with a natural appearance. Providing a structured color contact lens can also be one of the objectives.

  In addition, the present invention has a ring-shaped coloring region composed of colors that objectively match the iris color of the wearer, and can make the outer diameter of the wearer's iris appear large in a natural appearance. It is an object of the present invention to realize a novel color contact lens set and a method for manufacturing the same that enables a contact lens to be manufactured and provided so as to efficiently match a wide range of iris colors with a small number of color standards.

  Furthermore, the present invention has a ring-shaped coloring region composed of a color that objectively matches the iris color of the wearer, and can make the outer diameter of the wearer's iris appear large in a natural appearance. At the same time, it is possible to provide a novel manufacturing method of a color contact lens that can be mass-produced by efficiently adapting to a wide range of iris colors with a small number of color standards.

  A first aspect of the present invention relating to a color contact lens made to solve such problems has an outer diameter dimension larger than the outer diameter of the iris and an inner diameter dimension smaller than the outer diameter of the iris. In a color contact lens provided with a ring-shaped coloring region, the saturation value in the coloring region has a saturation distribution in the middle portion in the radial direction of the iris and a saturation distribution in the peripheral portion in the population of wearing subjects. Is set in a saturation region where and overlap.

  As a result of repeated experiments and verifications by the inventor in order to solve the above-mentioned problems, the color difference in the colored region in the lens wearing state is caused by the individual difference or partial difference in the iris of the human eye. As an element that tends to give a sense of incongruity, I have gained new knowledge that the saturation value of the human eye is important. In particular, attention was paid to the fact that the saturation varies among individuals, and also varies depending on the radial position of the same person.

  In other words, the color contact lens targeted by the present invention is such that, in its worn state, the inner peripheral edge of the ring-shaped colored region is positioned in the radial middle portion of the iris, while the outer peripheral edge of the colored region is the radial direction of the iris. It is positioned on the outer peripheral side. Here, it has been confirmed by the present inventor that the saturation of the iris changes relatively greatly in the radial direction. In the color of the ring-shaped coloring region, the intermediate portion and the peripheral portion of the iris By selecting the saturation of the overlapping area, it is possible to easily set a color that objectively matches the iris color of the wearer.

  And by wearing a color contact lens structured according to this aspect, the inner peripheral edge of the ring-shaped colored region is easily familiar and visible on the iris of the wearer, and the outer peripheral edge of the colored region is also on the conjunctiva. Therefore, it will have an appearance close to the outer edge of the natural iris without being excessively conspicuous. As a result, it is possible to satisfactorily satisfy the wearer's desire to wear the color contact lens in a state that is difficult for others to understand.

  Moreover, in the color contact lens of this aspect, the color of the colored region is set to a color that suits a large number of wearing subjects. Therefore, the iris color of a wide range of wearers can be efficiently used with a small number of color standards. It becomes possible to adapt. Therefore, it is not necessary to set the number of color standards excessively, and manufacturing and management can be performed with a small number of color standards, so mass production, distribution to the market, and even a prescription suitable for users Can be done efficiently.

  According to a second aspect of the present invention relating to a color contact lens, in the color contact lens according to the first aspect, the lightness value in the colored region is a standard deviation to the average value X of the lightness of the iris in the population of wearing subjects. Considering σ, it is set within the range of X ± 2σ.

  Further, a third aspect of the present invention relating to a color contact lens is the color contact lens according to the first or second aspect, wherein the hue value in the colored region is an average of the hues of irises in the population of wearing subjects. The value Y is set within the range of Y ± 2σ ′ in consideration of the standard deviation σ ′.

  As a result of experiments and examinations by the present inventors, in the iris of human eyes, the distribution range of brightness and hue is limited compared to saturation, and in particular, the difference in the radial position of the iris is relatively small. understood. Therefore, in the color contact lens of the present invention, regarding the color setting of the colored region, the brightness and hue can be easily determined as compared with the iris, and for example, an average value in the population of the wearing target is adopted. Thus, it is possible to adapt to a large number of wearing subjects.

  Here, according to the second aspect described above, the brightness value in the colored region is set within a range of ± 2σ with respect to the average value of the brightness of the iris in the population of the wearing target, According to the third aspect, it is preferable that the hue value in the colored region is set within a range of ± 2σ ′ with respect to the average value of the hue of the iris in the population of wearing subjects. By adopting such a lightness or hue setting range, it is possible to more advantageously provide an appearance in which the colored region in the wearing state is well adapted to the wearer's iris to suppress a sense of discomfort.

  A fourth aspect of the present invention relating to a color contact lens is the color contact lens according to any one of the first to third aspects, wherein the saturation is 35 to 44% and the lightness is 40 to 45% in the colored region. The hue is set to 25 to 30 degrees.

  According to this aspect, when the wearing target is Japanese, unlike the conventional product that aims to improve the cosmetic effect by making the outer edge of the iris more prominent in the wearing state, It is possible to efficiently realize a color contact lens having a novel structure that can make it difficult to visually recognize that it is worn by presenting a unique appearance.

  According to a fifth aspect of the present invention relating to a color contact lens, in the color contact lens according to any one of the first to fourth aspects, the colored region is formed by providing a plurality of colored dots, and the coloring is performed. The dots are shaped so that the width dimension in the circumferential direction decreases from the lens outer peripheral side toward the lens inner peripheral side, and the area of the colored dots decreases from the lens outer peripheral side toward the lens inner peripheral side It is.

  In the color contact lens structured according to this aspect, the ratio of the dot area colored in the colored region to the non-colored transparent area can be set efficiently and easily with a more natural appearance in the lens radial direction. It becomes possible.

  According to a sixth aspect of the present invention relating to a color contact lens, in the color contact lens according to the fifth aspect, an annular dot arrangement band is obtained by arranging the semicircular colored dots at a predetermined pitch in the lens circumferential direction. And a plurality of dot arrangement bands are provided concentrically in the lens radial direction.

  In the color contact lens structured according to this aspect, the ratio between the dot area colored in the colored region and the non-colored transparent area is efficiently increased with a natural appearance in both the lens circumferential direction and the lens radial direction. And it becomes possible to set easily. As a result, it is possible to make the fact of wearing more difficult to see on the appearance by appearing more naturally in the wearing state over a wide range of the colored region.

  A seventh aspect of the present invention relating to a color contact lens is the color contact lens according to any one of the first to sixth aspects, wherein the ring-shaped colored region is a uniform colored region over the entire circumference in the circumferential direction. An outer peripheral portion and an inner peripheral portion which is an uneven colored region in the circumferential direction, and the radial dimension of the inner peripheral portion is a size corresponding to the allowable deviation amount in the wearing state. It is set.

  In the color contact lens structured according to this aspect, by providing a colored region that is not uniform in the circumferential direction on the inner peripheral part of the colored region, it becomes possible to bring the region closer to an iris pattern, and the appearance when worn It is possible to further reduce the above feeling of strangeness. In addition, since such uneven coloring areas can be observed from the outside using an ophthalmic device such as a slit lamp microscope as necessary, the radial dimension of the uneven coloring area can be changed when the visual axis is moved in the wearing state. By setting the size corresponding to the allowable deviation amount, it is possible to use it as an index when other people objectively observe the suitability of the color contact lens to the wearer.

  In addition, the first aspect of the present invention relating to a color contact lens set, which has been made to solve the problems described in [0011] above, is an outer diameter dimension larger than the outer diameter of the iris and the outer diameter of the iris. A ring-shaped coloring region having a smaller inner diameter dimension, and the saturation value in the coloring region is the saturation distribution of the intermediate portion in the radial direction of the iris in the population of wearing subjects. Targeting a color contact lens set in a saturation region where the saturation distribution of the peripheral portion overlaps, the color contact lens having different color settings by different saturation and brightness in the coloring region A plurality of types are combined with each other to form a color contact lens set, and coloring is performed in the colored areas having different color settings. Things, characterized lightness value to the extent that the value increases are large.

  As a result of experiments and verifications by the present inventor, there is a tendency for variation in saturation as a color component with relatively large individual differences and partial differences in the iris of the human eye, and in particular, a proportional relationship is close to lightness It was newly learned that there is a positive correlation. In the color contact lens set having the structure according to the present invention made based on such new knowledge, any color constituting the set can be used even for a large number of users whose iris colors differ depending on individual differences. By selecting a contact lens, a color close to the user's iris can be provided. Therefore, it is possible to efficiently provide color contact lenses with colors that can effectively respond to individual differences among users who are wearing subjects and can have an appearance close to that of natural iris. This makes it possible to more easily manufacture, distribute and manage the contact lens having the structure according to the present invention as described above.

  According to a second aspect of the present invention relating to a color contact lens set, in the color contact lens set according to the first aspect, for a plurality of types of the color contact lens, brightness values are set in the colored regions having different color settings. The larger the diameter, the larger the outer diameter of the colored region. When a color contact lens set is configured by combining a plurality of types having different color settings as described above, the lightness value increases in the colored areas having different color settings. A mode in which the diameter dimension is increased can be suitably employed.

That is, the impression that the difference in brightness gives to the viewer is relatively large, and generally the lower the brightness value, the stronger the psychological impression, so in the color contact lenses combined with each other as in this aspect, By increasing the outer diameter of the colored region as compared with the smaller value, the larger value can be aligned so that the appearance on the appearance during wearing is not significantly different.
A third aspect of the present invention relating to a color contact lens set is the color contact lens set according to the first or second aspect, wherein the color contact lens has a saturation of 35 to 44% and a lightness in the colored region. 40 to 45% and the hue is 25 to 30 degrees.
A fourth aspect of the present invention relating to a color contact lens set is the color contact lens set according to any one of the first to third aspects. In the color contact lens, the colored region is formed by providing a plurality of colored dots. The colored dots are formed so that the width dimension in the circumferential direction decreases from the lens outer peripheral side toward the lens inner peripheral side, and the colored dots extend from the lens outer peripheral side toward the lens inner peripheral side. The area of is smaller.
According to a fifth aspect of the present invention relating to a color contact lens set, in the color contact lens set according to the fourth aspect, an annular dot array is formed by arranging the semicircular colored dots at a predetermined pitch in the lens circumferential direction. A band is formed, and a plurality of dot arrangement bands are provided concentrically in the lens radial direction.
A sixth aspect of the present invention relating to a color contact lens set is the color contact lens set according to any one of the first to fifth aspects, wherein in the color contact lens, the ring-shaped colored region is the entire circumference in the circumferential direction. An outer peripheral portion that is a uniform colored region and an inner peripheral portion that is a non-uniform colored region in the circumferential direction, and the radial dimension of the inner peripheral portion is an allowable deviation in the wearing state. The size corresponding to the quantity is set.

  Further, the present invention provides a wearable person in manufacturing a color contact lens provided with a ring-shaped colored region having an outer diameter larger than the outer diameter of the iris and an inner diameter smaller than the outer diameter of the iris. A color information acquisition step of acquiring an iris color in the population of the user as a color component value using a predetermined color system, and a distribution of the color component values of the iris in the population obtained in the color information acquisition step A color value in the coloring region by setting a saturation value in a saturation region in which the saturation distribution of the intermediate portion in the radial direction of the iris in the population and the saturation distribution of the peripheral portion overlap. A color contact lens manufacturing method including a color determining step for determining color and a step of providing the colored region with the color determined in the color determining step is also characterized.

  According to the method of the present invention, by setting the wearing target person in advance, it is possible to make the outer edge of the iris appear large naturally in a state where it is inconspicuous and familiar with the iris in the wearing state for a large number of users belonging to the wearing target person. The novel color contact lens can be efficiently manufactured and provided to the user with the color region specified by the color component value objectively specified by an appropriate color system.

  In the method of the present invention, the colored region can be preferably formed as an aggregate region of a plurality of colored dots. Such colored dots are realized by coloring the surface and / or the inside of the lens by, for example, attaching a pigment or dye to the lens surface or enclosing or impregnating the inside of the lens. Also, ink droplets can be landed on the lens surface with an ink jet printer, or the dye attached to the lens mold can be deposited on the lens surface during lens molding, printed on electrophotographic prints, or by thermal transfer or photo development. In addition to coloring, the surface of the lens or the inside thereof may be colored directly or indirectly by various known methods such as coloring the surface of the lens with a high-accuracy pad transfer method described in JP-T-2011-76105. It is possible to attach.

  Furthermore, as a colored dot, in addition to adopting an element dot formed by adhesion of a minimum unit of a colorant, for example, a colored dot composed of an aggregate area of a plurality of adjacent element dots It is also possible to adopt. The plurality of colored dots may be separated from each other or partially in contact with each other.

  By the way, the method of the present invention can be suitably applied when manufacturing the color contact lens according to the present invention described above. That is, in the step of manufacturing a color contact lens according to the method of the present invention, the colored region is set so as to satisfy the configuration of the color contact lens described in any one of the first to seventh aspects of the present invention relating to the color contact lens. A method for manufacturing a color contact lens is also an embodiment of the method of the present invention.

Further, the method of the present invention can be suitably applied when obtaining the color contact lens set according to the present invention described above. That is, a plurality of types of the color contact lenses constituting the color contact lens set according to the present invention described above are combined with each other with different color settings. A method of manufacturing a target color contact lens set by manufacturing according to the method is also a feature of the present invention.
A first aspect of the method of the present invention relating to a method for producing a color contact lens set, which has been made in order to solve the problems as described in [0011], is the first aspect described in [0030] to [0033] above. A method of manufacturing a color contact lens set according to any one of the aspects 6, wherein when producing a plurality of types of the color contact lenses that are combined with each other with different color settings, the iris of the population of wearing subjects A color information acquisition step of acquiring a color as a color component value using a predetermined color system, a distribution range of the color component values of the iris in the population obtained in the color information acquisition step, and By setting the saturation value in the saturation area where the saturation distribution of the middle part in the radial direction of the iris and the saturation distribution of the peripheral part in the population overlap, That a color determination step of determining a color, and a step of a color determined by said color determining step providing the colored region, a method for manufacturing a colored contact lens set including, characterized.
A second aspect of the method of the present invention relating to a method for manufacturing a color contact lens set is a method for manufacturing a color contact lens set according to the first aspect described above, and in the color determination step, the value of lightness in the colored region. Is set within a range of X ± 2σ in consideration of the standard deviation σ for the average value X of the brightness of the iris in the population of wearing subjects.
A third aspect of the method of the present invention relating to a method for manufacturing a color contact lens set is a method for manufacturing a color contact lens set according to the first or second aspect described above, in the color determination step, in the colored region. The hue value is set within a range of Y ± 2σ ′ in consideration of the standard deviation σ ′ with respect to the average value Y of the hue of the iris in the population of wearing subjects.

  According to the present invention, it has a ring-shaped coloring region composed of a color that objectively matches the iris color of the wearer, and can make the outer diameter of the wearer's iris appear large in a natural appearance. Thus, a novel color contact lens can be provided that can be mass-produced by efficiently adapting to a wide range of iris colors with a small number of color standards.

  In particular, in the color contact lens set according to the present invention, the color setting of the colored region based on the correlation between lightness and saturation based on new knowledge is adopted, and it is also compared with individual differences of many users. Therefore, it is possible to provide an appropriate color contact lens that can efficiently cope with a small number of color settings.

  In addition, the method of the present invention can be suitably applied when manufacturing a color contact lens or a color contact lens set according to the present invention as described above.

(A) is front explanatory drawing which expands and shows the color contact lens as one Embodiment of this invention, (b) is the color contact which colored the coloring area | region in the color contact lens of (a) with another color. Shows the lens. The explanatory view by the front photograph which shows the human eye wearing the color contact lens shown in Drawing 1 exemplarily. Explanatory drawing by the front photograph which shows the naked eye in the wearing subject of the color contact lens shown by FIG. 1 exemplarily. An explanatory view for explaining an HSV color system as a specific example of a color system. Explanatory drawing which shows the relationship between the saturation and the brightness in the color of the iris of a naked eye state, and the color attached | subjected to the coloring area | region of Example 1,2.

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

  First, FIGS. 1A and 1B show color contact lenses 10 and 11 as one embodiment of the present invention, and both color contact lenses 10 and 11 are colored with mutually different colors. Yes. Each of the color contact lenses 10 and 11 includes an optical part 12, a peripheral part 14, and an edge part 16 from the central part of the lens toward the outer periphery, and a colored region 18 is provided across the optical part 12 and the peripheral part 14. ing. In the following description, since the color contact lenses 10 and 11 have substantially the same shape, the color contact lens 10 shown in FIG.

  More specifically, the color contact lens 10 of the present embodiment has a thin, generally spherical crown shape as a whole, as in the case of a conventional contact lens. Then, the lens is superimposed on the cornea of the user on the inner surface of the concave lens of the spherical crown, and is worn on the human eye with the eyelid covering the outer surface of the convex lens of the spherical crown when blinking.

  An optical portion 12 having a substantially circular region shape when viewed from the front is provided at the central portion of the color contact lens 10. The optical unit 12 is a region that transmits light guided to the retina in a worn state, and is given high transparency to visible light. The optical unit 12 may be set with appropriate optical characteristics so as to give a predetermined visual acuity correction to the wearer's eye optical system as necessary.

  In addition, an annular peripheral portion 14 is provided on the outer periphery of the optical portion 12 so as to surround the periphery of the optical portion 12 with a predetermined width in the radial direction, and the color contact lens 10 is provided by the user by the peripheral portion 14. It is made to be stably located on the cornea. Further, the outer peripheral edge of the color contact lens 10 is an edge portion 16, and the lens inner surface and the lens outer surface are connected by the edge portion 16.

  The color contact lens 10 is configured by providing the colored region 18 across the optical part 12 and the peripheral part 14. The colored region 18 is a substantially ring-shaped or annular belt-shaped region provided concentrically with the optical portion 12 and the peripheral portion 14 around the lens geometric center 20. In addition, in this embodiment, the colored region 18 may be solidly colored, but in the present embodiment, small colored dots 22 are partially connected to the colored region 18 or at a predetermined interval separated by a slight gap. It is configured by arranging a large number.

  In the present embodiment, each colored dot 22 is colored with a constant color as a whole, and its transparency is also constant throughout the dot. In the present embodiment, the color and transparency of all the colored dots are also constant. However, the size of the colored dots 22 is different in the lens radial direction.

  More specifically, in the present embodiment, a semicircular colored dot 22 like a scale is employed, and the colored dot 22 is a width dimension in the circumferential direction from the outer peripheral side of the lens toward the inner peripheral side. Is directed in the direction in which the lens becomes smaller, the circumferential width dimension of the colored dots 22 is reduced from the outer peripheral side to the inner peripheral side of the lens. In addition, the plurality of colored dots 22 are distributed and arranged so as to be in a certain colored state over the entire colored region 18 so as not to generate a light and shade that is uncomfortable in appearance.

  In particular, in the present embodiment, an arrangement circle is designed on the same axis around the central axis of the optical portion 12 and the peripheral portion 14, and the colored dots 22 having the same shape are spaced apart from each other along this arrangement circle. A dot array band 24 is formed as an annular colored band by being spaced apart. Furthermore, a plurality of design arrangement circles in which a plurality of colored dots 22 are arranged in the circumferential direction are set in a multiple manner at predetermined intervals in the lens radial direction, so that a plurality of dot arrangement bands 24 are concentric. Provided. Further, the colored dots 22 constituting the dot arrangement band 24 are equal or smaller in the dot arrangement band 24 located on the inner peripheral side than the dot arrangement band 24 located on the outer peripheral side.

  As shown in the figure, the colored dots 22 are connected in a manner such that the colored dots 22 adjacent to each other in the circumferential direction and the radial direction are in contact with each other. The colored dots 22 may be arranged at a distance. Furthermore, as shown in the figure, the semi-circular colored dots are arranged in a scale shape, and in the present invention, various colored dots can be employed in any arrangement form, for example, the entire predetermined area is solidly painted. It is also possible to color.

  Further, when employing the colored dots 22, the area ratio of the colored dots 22 in the entire colored region 18 is set to 20 to 70%, preferably 45 to 65%, more preferably 50 to 60%. It is desirable that Thereby, it becomes easy to recognize the coloring area | region 18 integrally on an external appearance. Furthermore, in order to realize a colored state that does not give a sense of incongruity throughout the colored region 18, the size of each colored dot 22 is 40 to 300 μm in the circumferential direction, preferably 70 to 250 μm, and 70 to 600 μm in the radial direction, preferably It is desirable that the thickness is 100 to 400 μm.

  Furthermore, it is desirable for the colored dots 22 in the colored region 18 to have a visible light (380 to 750 nm) transmittance of 0 to 50%, and in the region including the optical part outside the colored dots 22, visible light It is desirable that the transmittance be 80 to 100%. As a result, it is easier to obtain both the securing of visibility for the user and the cosmetic effect by the colored region 18.

  Furthermore, in the present embodiment, the colored dots 22 constituting the dot arrangement band 24 are gradually reduced from the outermost dot arrangement band 24 toward the inner dot arrangement band 24. Further, the circumferential positions of the colored dots 22 are also different in the circumferential direction by 1/2 between the dot arrangement bands 24 and 24 that are adjacent to each other in the radial direction, and the inner and outer peripheral dots that are adjacent in the radial direction. The colored dots 22 are arranged at circumferential positions corresponding to the circumferential gaps between the colored dots 22 and 22 in the arrays 24 and 24. As is clear from this, in the present embodiment, the number of arranged colored dots 22 on the circumference is reduced by reducing the colored dots 22 in the dot arrangement band 24 on the inner circumference side with a smaller circumference. It is assumed to be constant. However, in the dot arrangement band 24 near the inner periphery, colored dots 22 are discretely arranged on the circumference, and a colored shape imitating an iris pattern or the like is constituted by the colored dots 22 in the discrete subset region. Therefore, in the region, the colored dots 22 are arranged with an arbitrary shape, size, and pitch.

  As shown in FIG. 2, the color contact lenses 10 and 11 having such a structure are worn by the human eye.

  Here, the outer diameter dimension φA of the colored region 18 is larger than the outer diameter dimension of the iris 26, and the inner diameter dimension φB of the colored region 18 is smaller than the outer diameter dimension of the iris 26. That is, the colored region 18 is formed so as to extend to both the black eye region and the white eye region across the boundary between the so-called black eye iris 26 and the so-called white eye on the outer peripheral side thereof.

  Further, for example, the inner diameter dimension φB of the colored region 18 is ¼ to ¾ of the width direction (radial direction) of the iris 26 on the iris 26 positioned on the outer peripheral side of the pupil 28 that spreads in the dark field. You may set so that the inner periphery of the coloring area | region 18 may be located in an area | region.

  Furthermore, it is preferable that the outer diameter dimension φC of the optical unit 12 is substantially the same as or larger than the maximum diameter when the pupil 28 is dilated. Thereby, for example, when the inner diameter dimension φB of the colored region 18 is set to be larger than the maximum pupil diameter at the time of mydriasis in the optical unit 12 and larger than the outer diameter dimension φC, the pupil 28 is dilated in the dark. In particular, it is effectively avoided that the colored region 18 enters the region of the pupil 28, that is, the wearer's field of view. In FIG. 1, a pupil 28 a in a state where the pupil is reduced to a minimum diameter and a pupil 28 b in a state where the pupil is dilated and has a maximum diameter are indicated by a two-dot chain line.

  However, the inner peripheral portion of the colored region 18 may not have a colored portion continuously set over the entire circumference, particularly in the present embodiment, and the pupil is within a range in which the user does not feel strange. Some may be included in the diameter. In particular, in consideration of the movement of the lens on the cornea during the movement of the user's visual axis, etc., the inner peripheral portion of the colored region 18 does not interfere with the pupil diameter temporarily and partially. There are many.

  Furthermore, in the present embodiment, in the outer peripheral portion of the colored region 18, a colored region is configured in which the colored dots 22 are uniformly arranged at substantially constant intervals on the periphery of the dot array band 24 and appear to be substantially ring-shaped. In the inner peripheral portion of the colored region 18, the colored dots 22 are discretely arranged on the periphery of the dot arrangement band 24, thereby forming a colored region that is difficult to see in a ring shape. In particular, the colored dots 22 in the inner circumferential portion are set at substantially corresponding positions on the circumference between the plurality of dot arrangement bands 24 extending in the radial direction, so that the outer circumferential portion of the colored region 18 that appears to be colored as a whole. Thus, a pattern 27 such as a hair or thread similar to an iris pattern is formed which extends in a substantially tapered shape toward a radially inward direction at a plurality of locations on the circumference.

  In the present embodiment, as shown in FIGS. 1 and 2, patterns 27 that taper out in the radial direction at the inner peripheral portion of the colored region 18 are formed at substantially equal intervals in the lens circumferential direction. An uncolored region 29 is formed between the patterns 27 and 27 adjacent to each other in the circumferential direction so as to extend from the optical unit 12 toward the outer periphery into the colored region 18. A plurality of uncolored regions 29 are formed at substantially equal intervals in the lens circumferential direction, and can be easily confirmed from the outside regardless of the circumferential direction of the lens. Incidentally, in the embodiment of FIGS. 1 and 2, a petal shape that is narrow toward the outside in the radial direction is imitated by a plurality of uncolored regions 29, and as a flower shape having a plurality of petals as a whole, The uncolored area | region of the inner peripheral part of the colored area | region 18 containing the optical part 12 can be visually recognized now.

  Further, in the present embodiment, the radial dimension of the uncolored area 29, in other words, the radial dimension of the pattern 27 constituting the inner peripheral portion of the colored area 18 is (φD−φB) in FIGS. The value indicated by / 2 is set to a size corresponding to the allowable deviation amount δ when viewed from above in the lens wearing state. The permissible deviation amount δ is the maximum design deviation within a range in which the radial deviation amount of the lens center with respect to the pupil center does not adversely affect the appearance of the wearer. A numerical value such as 2.0 mm or 1.5 mm is set for each lens type. Then, the radial dimension of the pattern 27 is set to the same or close value corresponding to the allowable deviation amount δ, so that the natural appearance on the appearance of the pattern 27 in the worn state is further increased. The pattern 27 can be used stably as an index or the like when a third party confirms the suitability of the lens to the user.

  Specifically, for example, when the allowable deviation amount δ is 2.0 mm, the radial dimension of the pattern 27 is set within a range of 2.0 to 3.0 mm. As described above, when the outer peripheral edge of the pupil 28 that spreads in the dark field is set near the center of the pattern 27 in the radial direction, the lens moves on the cornea by an allowable deviation amount δ to one side in the radial direction. In this case, the outer peripheral edge of the pupil 28 reaches a position near or slightly beyond the outer peripheral edge of the pattern 27 on one side in the moving direction, and the pupil 28 has a position on the other side opposite to the moving direction. The outer peripheral end reaches a position near or slightly off the inner peripheral end of the pattern 27. In this manner, within the range of the allowable deviation amount δ, the pupil 28 is prevented from being largely covered with the outer peripheral portion of the colored region 18, and a good view with a sufficient amount of transmitted light through the lens is further advantageous. Can be secured.

  In addition, when the outer peripheral end of the pupil 28 reduced in the bright field is set near the substantially inner peripheral end in the radial direction of the pattern 27, for example, the wearer is viewed upward to move the lens on the cornea. , The distance between the outer peripheral edge of the pupil 28 and the radially inner end of the pattern 27, or the distance between the outer peripheral edge of the pupil 28 and the radially outer edge of the uncolored area 29. It is also possible to easily measure the lens movement amount on the cornea. And the compatibility of the said lens with respect to a wearer can also be determined with this measured value. Note that the measurement may be performed using, for example, the outer peripheral end of the iris 26 as a reference instead of the outer peripheral end of the pupil 28.

  Here, a specific design example for a general adult is shown. Specifically, since the outer diameter dimension of the iris 26 is approximately 11 mm to 12 mm in the Oriental and Westerners including general Japanese, the outer diameter dimension φA of the colored region 18 is preferably 10.5 mm. ≦ φA ≦ 14 mm is set, and more preferably 11.5 mm ≦ φA ≦ 13.5 mm. On the other hand, the inner diameter φB of the colored region 18 is set to 3 mm ≦ φB ≦ 10 mm, and more preferably 6 mm ≦ φB ≦ 8 mm. The radial width dimension δ of the colored region 18 is preferably set to 0.5 mm ≦ δ ≦ 11 mm, and more preferably set to 3.5 mm ≦ δ ≦ 7.5 mm. The outer diameter dimension φC of the optical unit 12 is preferably set to 3 mm ≦ φC ≦ 8 mm, and more preferably set to 5 mm ≦ φC ≦ 7 mm. The outer diameter φD of the uncolored area 29 is preferably set to 5 mm ≦ φD ≦ 12 mm, and more preferably set to 8 mm ≦ φD ≦ 10 mm.

  By the way, in order to form the colored dots 22 as described above, that is, the colored region 18, inkjet printing or pad printing is suitably employed, and the colored region 18 is printed on the lens outer surface or the lens inner surface. Alternatively, it is possible to employ a structure in which a colored layer including the colored region 18 is provided inside the contact lens, and the colored layer is sandwiched between the outer layer and the inner layer of the contact lens.

  Hereinafter, an example is shown about the manufacturing method of the color contact lenses 10 and 11 of this embodiment made into this structure.

  First, as shown in FIG. 3, the color information of the naked eye of each human eye is acquired for the human eye constituting the population of the wearing target person. Such acquisition of color information can be efficiently performed by using captured software and computer software that analyzes the color of the image and converts it into data. In other words, for a plurality of wearers appropriately selected to constitute the population, an image of the area including the iris of the naked eye and the peripheral portion is taken. Then, the image data of the naked eye of the wearing target person is displayed as image data on a computer by image processing software capable of acquiring color information such as “Adobe Photoshop” (registered trademark) manufactured by Adobe Systems. Subsequently, color information in the iris 26 of the displayed naked eye image is extracted as data.

  Here, as a result of analyzing the image information of many human eyes, it was found that the colors of the general human eyes are so different that the colors can be visually observed on the inner and outer peripheral sides in the radial direction of the iris. . Therefore, it is decided to select color data by selecting the radial intermediate portion 30 and the peripheral portion 32 (see FIG. 3 respectively) of the iris 26 of the naked eye. The intermediate portion 30 and the peripheral portion 32 are selected from a certain range on the light source side that avoids reflections at the time of shooting, shadows of the iris ring, clouding of the old man's ring, etc. in the photographed naked eye iris image. Is desirable. In addition, it is desirable to consider not only the race but also the age group as the target wearer population, and considering the number of clinical trials of general contact lenses, the population of 60 eyes or more should be taken as the population. desirable.

  Such color data can be extracted by adopting a predetermined color system and acquiring the colors of the intermediate portion 30 and the peripheral portion 32 as color component values using an appropriate color system. In obtaining the color component values, in consideration of accuracy and convenience, it is preferable to obtain at least one number of images in each of the intermediate portion 30 and the peripheral portion 32, and in each image, the region of the iris 26 is obtained. It is desirable to obtain data with a size of 0.5% or more, more preferably 1.0% or more, and the number of pixels of 100 pixels or more, more preferably 500 pixels or more.

  In the present embodiment, the HSV color system is adopted as the color system, and the color component values of hue (H), saturation (S), and brightness (V) are acquired for the intermediate portion 30 and the peripheral portion 32, respectively. In the present embodiment, the H, S, and V color component values in the intermediate portion 30 and the peripheral portion 32 are calculated by the average values of the color component values in all the pixels in the intermediate portion 30 and the peripheral portion 32, respectively.

  Incidentally, FIG. 4 shows the color space 33 of the HSV color system adopted for extracting color data in this embodiment. That is, if such an HSV color system is adopted, the hue of the intermediate portion 30 and the peripheral portion 32 is in the range of 0 to 360 degrees in hue (H), and in the range of 0 to 100% in saturation (S). Among them, the brightness (V) can be represented by a numerical value within a range of 0% to 100%.

  And the color component value of the color set to the coloring area | region 18 of the color contact lenses 10 and 11 is determined from the information of the color component value of the intermediate | middle part 30 and the peripheral part 32 acquired by this color information acquisition process.

  For example, when the HSV color system as described above is adopted as the color system, the saturation (S) of the color set in the colored region 18 is the saturation distribution ( 34) and a region where the saturation distribution (36) of the peripheral portion 32 overlaps is set as a saturation region (38), and the region is set from within the region of this saturation region (38). In general, since the saturation of the peripheral portion 32 is lower than that of the intermediate portion 30, the saturation region (38) is (minimum saturation value in the intermediate portion 30) to (saturation in the peripheral portion 32). And the saturation of the color set in the colored region 18 of the color contact lenses 10 and 11 is within the above range.

  In addition, the lightness (V) of the color set in the colored region 18 of the color contact lenses 10 and 11 is calculated by calculating an average value X and a standard deviation σ for the lightness of the iris of the population, and calculating X ± 2σ. Is preferably set within the range of X ± σ, and more preferably within the range of X ± σ.

  Further, the hue (H) of the color set in the colored region 18 of the color contact lenses 10 and 11 is calculated by calculating the average value Y and the standard deviation σ ′ for the iris hue of the population, and calculating Y ± It is preferable to set from the range of 2σ ′, and more preferably from the range of Y ± σ ′.

  Thereafter, when the color component value of the color of the colored region 18 is determined by such a color determination process, a colorant that gives the determined color component value is prepared using a pigment or a dye, and the obtained colorant is contacted. By attaching to the lens, the color contact lenses 10 and 11 are obtained. At that time, the conventional spin casting method, lace cutting method, molding method, etc. are appropriately employed for manufacturing the contact lens itself.

  In the lens manufacturing process, for example, the prepared colorant is adhered or impregnated on the lens surface or the lens inner layer by a conventionally known printing method such as ink jet printing or pad printing, thereby forming the colored dots as described above. A colored region 18 can be obtained.

  In the color contact lenses 10 and 11 of the present embodiment manufactured as described above, the color component value of the color of the colored region 18 is within the distribution range of the color component value in the iris 26 of a plurality of wearing subjects as a population. In particular, it can be set in consideration of the difference in saturation of the iris 26 and the characteristics of the distribution pattern. Therefore, high affinity can be exhibited for the iris of most of the wearing subjects to whom the population belongs, and the color contact lens 10 that is difficult to perceive wearing and is inconspicuous can be efficiently realized. obtain. Then, the outer diameter dimension φA of the colored region 18 that is larger than the outer diameter dimension of the iris 26 makes it possible to obtain a cosmetic effect by making the iris appear larger while making the color contact lenses 10 and 11 unnoticeable. It becomes possible.

  Furthermore, since the color of the iris 26 of a plurality of wearing subjects can be grasped as a color component value and the color of the colored region 18 can be determined based on the color component value, a color contact lens that can be adapted to the iris color of many people. It becomes possible to manufacture according to specific numerical values. As a result, an increase in the number of color standards of the color contact lens can be prevented, enabling mass production and improving efficiency in manufacturing, management, sales, and the like.

  Further, in the color contact lenses 10 and 11 of the present embodiment, the colored region 18 is configured by a plurality of colored dots 22, and the colored dots 22 are formed in a semicircular shape, and from the outer peripheral side in the colored region 18. Since the area of the colored dots 22 is reduced toward the inner peripheral side, the colored portion of the colored region 18 is gradually decreased from the outer peripheral portion toward the inner peripheral portion. Thereby, non-uniformity is suppressed over the entire colored region 18, and a more natural appearance is exhibited. In addition, in the present embodiment, as shown in FIG. 1, the inner peripheral edge of the colored region is arranged such that collective dots composed of one or a plurality of continuous arrays in the circumferential direction are spaced apart from each other. In addition, since the arrangement of discrete colored dots in the circumferential direction is used, it is possible to give a more natural and familiar appearance to an iris that often exhibits a complicated pattern.

  In particular, an annular dot arrangement band 24 is constituted by a plurality of colored dots 22, and a plurality of dot arrangement bands 24 are provided concentrically in the lens radial direction to form a colored region 18, so that It becomes possible to set the outer edge shape of the colored region 18 giving a substantially constant appearance with a large degree of freedom in the circumferential direction and the radial direction. When forming the colored region 18 with such colored dots 22, settings such as brightness and hue are applied to each colored dot 22 itself that does not include an uncolored region.

[Example]
According to the manufacturing method described in the embodiment, a color contact lens 10 shown in FIG. 1A as Example 1 and a color contact lens 11 shown in FIG. The outer diameter dimension of the color contact lenses 10 and 11 of Example 1 and Example 2 thus manufactured was 14.5 mm, and the outer diameter dimension φC of the optical part was 8.0 mm. In the color contact lens 10 of Example 1, the outer diameter dimension φA of the colored region is 13.3 mm, the inner diameter dimension φB is 7.0 mm, and the radial width dimension δ is 6.3 mm, while the color contact of Example 2 is used. The lens 11 has an outer diameter dimension φA ′ of the colored region of 13.1 mm, an inner diameter dimension φB of 7.0 mm, and a radial width dimension δ ′ of 6.1 mm. The optical part was not provided with optical characteristics such as vision correction.

  First, as wearing subjects, 52 men, 51 women, and 103 eyes of 103 people, the iris images were taken in a naked eye state. As such a photographing method, in addition to the illumination environment of the photographing room, a weak diffused white light was applied with a slit lamp, and the brightness of the anterior segment was unified to 500 Lx. In addition, the brightness of the anterior eye part was measured using an illuminometer.

  Acquisition of images by photographing was performed by photographing one whole eye for one subject and obtaining image data. Incidentally, the total number of pixels of the captured image of the eye illustrated in FIG. 3 is 346800 (680 × 510).

  The photographed image data was displayed and processed on a computer by “Adobe Photoshop” (registered trademark) manufactured by Adobe Systems. That is, in such image data, a fixed range is selected for each of the intermediate portion and the peripheral portion in the radial direction of the iris in a region that avoids reflection at the time of shooting, shadows such as an iris ring, clouding of the elderly ring, and the like. The selection range is, for example, about 1% of the area of the iris 26 and the number of pixels is 961 (31 × 31) pixels.

  Subsequently, for the pixels included in each selection range of the intermediate portion and the peripheral portion, numerical values of hue (H), saturation (S), and lightness (V) were obtained, and average values thereof were calculated. This average value is determined as numerical values of hue (H), saturation (S), and lightness (V) in the iris in the naked eye state of each wearing subject, and these hue (H) and saturation (S). The average value and standard deviation of brightness (V) were calculated. In addition, calculation of each numerical value in the peripheral part of the iris was carried out by 81 men, 31 men and 50 women, 81 eyes. The calculation results are shown in [Table 1] below.

  Further, the saturation (S) and the brightness (V) are the values of the saturation (S) and the brightness (V) in the radial intermediate portion and the peripheral portion of the iris of each wearing subject, with the horizontal axis representing the saturation (S) and the vertical axis representing the lightness (V). The plotted graph is shown in FIG. As is apparent from the results of [Table 1], the hue (H) is not significantly different between the intermediate portion and the peripheral portion, and therefore the illustration of the hue is omitted.

  From the results of [Table 1] and FIG. 5, in the iris in the naked eye state of the human eye, the saturation distribution 34 in the middle part has a saturation (S) of 35% to 55%, while the saturation distribution in the peripheral part. No. 36 has a saturation (S) of 24% to 44%.

  Further, from the results of [Table 1] and FIG. 5, it was found that there is almost no difference in brightness (V) between the intermediate portion and the peripheral portion in the iris in the naked eye state of the human eye. Therefore, for the lightness (V), the average value and standard deviation are calculated for a total of 184 eyes including the intermediate portion and the peripheral portion of the iris, and as a result, the average value X of lightness (V) X = 42.6 (% ) And standard deviation σ = 4.9.

  Furthermore, from the results of [Table 1], it was found that there is almost no difference in hue (H) between the intermediate portion and the peripheral portion in the iris in the naked eye state of the human eye. Therefore, for the hue (H), the average value and standard deviation are calculated for a total of 184 eyes including the intermediate and peripheral portions of the iris, and as a result, the average value Y = 26.6 (degrees) of the hue (H) ) And standard deviation σ ′ = 3.5.

  Based on the above results, the color to be colored in the colored region 18 of the color contact lenses 10 and 11 of Examples 1 and 2 was determined. That is, with respect to the saturation (S) of the color to be colored, the saturation region 38 where the saturation distribution 34 of the intermediate portion and the saturation distribution 36 of the peripheral portion overlap each other has a saturation (S) of 35% to 44%. Since it is preferably set within the range of 35% to 40%, the color contact lens 10 of Example 1 sets the saturation (S) to 35 (%), while the color contact lens 11 of Example 2 sets the saturation. (S) was 39 (%).

  Further, the lightness (V) is preferably set within a range of 42.6 ± 9.8 (%), more preferably set within a range of 42.6 ± 4.9 (%). Thus, while the color contact lens 10 of Example 1 has a lightness (V) of 41 (%), the color contact lens 11 of Example 2 has a lightness (V) of 45 (%).

  Further, the hue (H) is preferably set within a range of 26.6 ± 7.0 (degrees), and more preferably set within a range of 26.6 ± 3.5 (degrees). Thus, in the color contact lens 10 of Example 1, the hue (H) was set to 25 (degrees), whereas in the color contact lens 11 of Example 2, the hue (H) was set to 26 (degrees).

  As described above, after the color to be applied to the colored region 18 is determined, the colored region 18 is formed by pad printing on the contact lens having the above-described structure. 10 and 11 were produced. In addition, the point which shows the saturation (S) and the brightness (V) in the color attached | subjected to the coloring area | region 18 of the color contact lenses 10 and 11 of Example 1, 2 is shown collectively in FIG.

  Thereafter, both the color contact lenses 10 and 11 were worn on the human eye as shown in FIG. 2 described above, and an iris image was taken with the color contact lenses 10 and 11 being worn. Then, the image data of the photographed iris was displayed on a computer by “Adobe Photoshop” (registered trademark) manufactured by Adobe Systems. Thereafter, in the iris image data, the measurement portion 40 was selected in a colored region on the light source side that avoids reflections at the time of photographing, shadows of the iris ring, clouding of the elderly ring, and the like. Subsequently, for all the pixels in the measurement portion 40, numerical values of hue (H), saturation (S), and brightness (V) were acquired, and average values thereof were calculated. In addition, the measurement in the measurement part 40 is performed five times at different positions, and the average value is calculated based on the hue (H), saturation (S), and lightness (V) in the iris of the color contact lens of each wearing subject. It was calculated as a numerical value. In addition, since the color of the coloring area | region 18 at the time of wear is considered not to be influenced by the wearer's own iris color, this measurement was implemented for one eye per person. Moreover, the position of the measurement part 40 shown by FIG. 2 is a mere illustration, Comprising: The measurement part 40 is arbitrarily selected from five places from the appropriate area | region of a coloring area | region.

  As a result, in the color contact lens 10 of Example 1, the hue (H) is 25.6 ± 2.7 (degrees), the saturation (S) is 39.2 ± 1.9 (%), and the lightness (V). Was calculated to be 44.8 ± 0.4 (%). On the other hand, in the color contact lens 11 of Example 2, the hue (H) is 25.0 ± 3.7 (degrees), the saturation (S) is 35.0 ± 2.4 (%), and the lightness (V) is. It was calculated as 40.8 ± 0.4 (%).

  Therefore, the hue (H), saturation (S), and brightness (V) values of the irises in the wearing state of the color contact lenses 10 and 11 of Examples 1 and 2 are substantially equal to those of the iris in the naked eye state. I was able to confirm. Thereby, the produced color contact lenses 10 and 11 can show a large iris and obtain a cosmetic effect while avoiding the other person clearly seeing wearing.

  Furthermore, since the produced color contact lenses 10 and 11 can be adapted to a large number of human eyes with specific numerical values, it is possible to prevent the number of color standards from becoming too large, and to enable mass production. Manufacturing, management, sales, etc. can be performed easily.

  Although the embodiments and examples of the present invention have been described in detail above, the present invention is not limited to the specific descriptions, and various changes, modifications, improvements, and the like have been added based on the knowledge of those skilled in the art. Any embodiment may be implemented within the scope of the present invention without departing from the spirit of the present invention.

For example, in the embodiment, the HSV color system is exemplified as the color system. However, the present invention is not limited to this, and the HSV color system including HSB, the HSL color system including HLS, and the RGB color system are not limited thereto. System, XYZ or Yxy color system, Munsell color system, PCCS, Ostwald color system, NCS, DIN color system, L ^* a ^* b ^* color system, L ^* u ^* v ^* color system, etc. A known color system can be adopted. Here, in any case where the color to be added to the colored region is expressed in a color system other than HSV as described above, the saturation value in the radial direction of the iris is expressed when the color is expressed in the HSV color system. If the saturation distribution of the intermediate portion and the saturation distribution of the peripheral portion are set in a saturation region, the color contact lens of the present invention includes both of them.

  In the above embodiment, the HSV color system is adopted to determine the color component values of the hue, saturation, and lightness, and the color applied to the colored region 18 is determined. When a color is specified by a plurality of color component values, the color of the colored region can be determined within the distribution range of the at least one color component value by paying attention to the at least one color component value. Specifically, when the HSV color system is adopted, it is only necessary that the saturation of the color applied to the colored region is set within the range of the saturation region, paying attention to the color component value of the saturation. That is, the lightness and hue are preferably in the range of, for example, the average value X (Y) plus or minus (standard deviation σ (σ ′) × 2), but may not be in such a range.

  Furthermore, the setting range of the population that is to be worn can be grasped as a target area that provides color contact lenses of the same specification, and the colored areas of the color contact lenses that are provided by narrowing down the wear target Can be made more familiar to the wearer. In this case, it is often difficult to perform a complete survey using a wearing target person as a population, and it is preferable to apply a sample survey to such a population. At this time, it is desirable to consider statistical reliability when acquiring color data such as saturation in a sampled manner. For example, an appropriate number of samples is set for the population, and color data in the population is collected from the extracted samples. It is desirable to extract the samples using a statistical method and set the number of samples in consideration of the error ratio. In other words, if the population average or population ratio interval estimation is used, it is possible to specify the error range and the error limit of the reliability rate and set the number of samples to an appropriate statistical value.

  Furthermore, a color contact lens set may be configured by combining a plurality of types of color contact lenses according to the present invention in which different colors are set by varying the saturation and brightness in the colored region 18. As shown in the graph of saturation (S) and lightness (V) in FIG. 5, in the central portion 30 of the iris 26, the lightness value increases as the saturation value increases. In the lens set, it is preferable that the color is different by changing the saturation and the brightness so that the brightness value increases as the saturation value increases. Further, since the hue is a substantially constant numerical value in the state of the naked eye as described above, a value close to the numerical value or a different value may be used.

  Furthermore, the colored region 18, the colored dots 22, and the dot arrangement band 24 shown in the above embodiment are merely examples, and their shapes, arrangement modes, separation distances, and the like can be arbitrarily set. Furthermore, in the embodiment, the colored dots 22 are all colored with the same color, and the colored dots 22 are also colored with the same density. The color may be different in the peripheral portion, or even within the colored dots, for example, the color may gradually change from the inner peripheral side to the outer peripheral side or from the center to the peripheral side.

  Note that various known image display formats such as JPEG, GIF, and PNG can be adopted as the display format of the iris image data on the computer, and is not limited at all. However, image data is not indispensable for obtaining color information. For example, numerical values such as hue (H), saturation (S), and lightness (V) may be directly obtained as numerical data.

  Moreover, in the said embodiment, although the colored area | region 18 was provided ranging over the optical part 12 and the peripheral part 14, it may be provided only in the peripheral part 14, for example. Thereby, it is avoided that the coloring area | region 18 enters into a wearer's visual field, and a favorable visual field can be ensured.

10, 11: Color contact lens, 18: Colored area, 22: Colored dots, 24: Dot arrangement band, 26: Iris, 30: Intermediate part, 32: Peripheral part, 34, 36: Saturation distribution, 38: Saturation region

Claims (9)

A ring-shaped coloring area having an outer diameter dimension larger than the outer diameter of the iris and an inner diameter dimension smaller than the outer diameter of the iris is provided, and the saturation value in the coloring area is determined by the wearing subject. For color contact lenses that are set in a saturation region where the saturation distribution of the middle portion in the radial direction of the iris and the saturation distribution of the peripheral portion in the population overlap, and the saturation and lightness are different in the coloring region A plurality of types of the color contact lenses that have been set to different colors by being combined with each other to form a color contact lens set,
A color contact lens set, wherein the brightness value is increased as the saturation value is increased in the colored areas having different color settings.   2. The color contact lens set according to claim 1, wherein for a plurality of types of the color contact lenses, the outer diameter of the colored region is increased as the value of brightness is increased in the colored regions having different color settings. .   The color contact lens set according to claim 1 or 2, wherein the color contact lens has a saturation of 35 to 44%, a lightness of 40 to 45%, and a hue of 25 to 30 degrees in the colored region.   In the color contact lens, the colored region is formed by providing a plurality of colored dots, and the colored dots have a shape in which the width dimension in the circumferential direction decreases from the lens outer peripheral side toward the lens inner peripheral side. The color contact lens set according to any one of claims 1 to 3, wherein an area of the colored dots decreases from the outer peripheral side of the lens toward the inner peripheral side of the lens.   An annular dot arrangement band is formed by arranging the semicircular colored dots at a predetermined pitch in the lens circumferential direction, and a plurality of dot arrangement bands are provided concentrically in the lens radial direction. Item 5. A color contact lens set according to item 4.   In the color contact lens, the ring-shaped coloring region includes an outer peripheral portion that is a uniform coloring region over the entire circumference in the circumferential direction and an inner peripheral portion that is a non-uniform coloring region in the circumferential direction. The color contact lens set according to any one of claims 1 to 5, wherein a radial dimension of the inner peripheral portion is set to a size corresponding to an allowable deviation amount in a worn state. A method for producing a color contact lens set according to any one of claims 1 to 6,
When manufacturing a plurality of types of color contact lenses that are combined with each other with different color settings,
A color information acquisition step of acquiring the color of the iris in the population of the wearing target person as a color component value using a predetermined color system;
Within the distribution range of the color component values of the iris in the population obtained in the color information acquisition step, and the saturation distribution of the intermediate portion and the saturation distribution of the peripheral portion in the radial direction of the iris in the population A color determination step for determining a color in the coloring region by setting a saturation value in a saturation region where and
Providing the colored region with the color determined in the color determining step. A method for manufacturing a color contact lens set, comprising:   8. In the color determination step, the lightness value in the colored region is set within a range of X ± 2σ in consideration of the standard deviation σ with respect to the average value X of the lightness of the iris in the population of wearing subjects. The manufacturing method of the color contact lens set of description.   In the color determination step, a hue value in the coloring region is set within a range of Y ± 2σ ′ in consideration of a standard deviation σ ′ with respect to an average value Y of iris hues in a population of wearing subjects. Item 9. A method for producing a color contact lens set according to Item 7 or 8.