TWI735565B - Colored contact lenses and method of making the same - Google Patents

Abstract

The invention is directed to a colored contact lens designed for making a wearer's eyes to appear larger and more defined and with more shine, while remaining natural by blending seamlessly with the eye. A colored contact lens, comprising a first print of a first color and a second print of a second color, wherein the first print is an annular ring of gradient dot matrix, wherein the second print is an annular ring of speckle pattern, wherein the annular ring of speckle pattern comprises clusters of regular or irregular shapes distributed annularly, wherein the regular or irregular shapes consists of a large number of circular dots, wherein the annular ring of speckle pattern has non-smooth inner and outer borders, wherein the second print is located on the inside of the first print, wherein the first color and the second color are different or the same, wherein the first print and the second print are concentric with the center of contact lens.

Description

Colored contact lens and method for manufacturing colored contact lens

The colored contact lens of the present invention can make the wearer's eyes appear larger, sharper and more shining, while maintaining naturalness by seamlessly blending with the eyes. The present invention also relates to methods for designing and manufacturing the colored contact lenses of the present invention.

For cosmetic purposes, colored lenses with one or more coloring agents dispersed in the lens or printed on the lens are in great demand. These colored contact lenses enhance the natural beauty of the eye, or provide a unique pattern on the wearer's iris, or provide a non-cosmetic pattern.

Generally speaking, there are two types of colored contact lenses. The first is to use a substantially transparent color-enhancing contact lens, which allows the natural iris color to be displayed through the lens, but is combined with the natural color to create a new appearance. Such transparent tinted lenses are often used to change light-colored eyes (for example, green) into a slightly different hue (for example, light green). Such tinted lenses may not be able to turn the dark brown iris underneath into blue. The second category is this kind of opaque colored lenses that have a continuous opaque pattern that completely covers the iris or an intermittent opaque pattern that does not completely cover the iris. Opaque tinted contact lenses can effectively and greatly modify the wearer's eye color.

Certain contact lens consumers have expressed interest in enhancing their eyes without drastically changing the natural color of their eyes. They want their eyes to appear larger, more defined and shining, while remaining natural by blending seamlessly with the eyes. However, these consumers do not want anyone to know that they are wearing contact lenses, and any design should be natural.

Therefore, there is still a need for tinted contact lenses that can make the eyes appear larger and have enhanced contrast and more eye-catching, while maintaining the wearer's underlying iris structure and natural color.

The present invention provides a colored contact lens. The colored contact lens includes a first print of a first color and a second print of a second color, wherein the first print is a circular gradient dot matrix, and the second print Is a circular ring-shaped speckle pattern, wherein the circular ring-shaped speckle pattern includes a plurality of circularly distributed clusters of regular or irregular shapes, wherein the regular or irregular shapes are composed of a large number of dots, wherein the circle The circular speckle pattern has a non-smooth inner and outer boundary, wherein the second print is located inside the first print, wherein the first color and the second color are different or the same, wherein the first print and the second print 2. The print is concentric with the center of the contact lens.

In another aspect, the present invention covers a method for making colored contact lenses, the method comprising the steps of: providing a preformed contact lens; and applying a first printed opaque colored dot pattern of a first color to the contact lens On the surface of at least one of the front surface and the back surface of the contact lens, wherein the first printing is a circular gradient dot matrix, and a second printing opaque colored dot pattern of the second color is applied to the contact lens On the surface, where the second printing is a circular speckle pattern, wherein the circular speckle pattern includes a plurality of circularly distributed clusters of regular or irregular shapes, wherein the regular or irregular shapes are formed by A large number of dots, wherein the circular speckle pattern has a non-smooth inner and outer boundary, wherein the second print is located inside the first print, wherein the first color and the second color are different or the same, Wherein, the first print and the second print are concentric with the center of the contact lens.

In yet another aspect, the present invention covers a method for making colored contact lenses, the method comprising the following steps: (a) providing a mold including a first mold half having a first molding surface and a second mold having a first molding surface The second mold half of the molding surface, the first molding surface defines the front surface of the contact lens, and the second molding surface defines the back surface of the contact lens, wherein the first mold half and the second mold half are configured The mold is to receive each other, so that a contact lens forming cavity is formed between the first molding surface and the second molding surface; Two printed opaque colored dot patterns are applied to at least one of the molding surfaces of the lens mold, wherein the second printing is a circular speckle pattern, wherein the circular speckle pattern includes a plurality of Annularly distributed clusters of regular or irregular shapes, wherein the regular or irregular shapes are composed of a large number of dots, wherein the circular speckle pattern has a non-smooth inner and outer boundary, and (c) by using pad printing Or inkjet printing technology applies a first printing opaque colored dot pattern of a first color to the surface of the mold, wherein the first printing is a circular gradient dot matrix, wherein the second printing is located The inner side of the first print, wherein the first color and the second color are different or the same, and the first print and the second print are concentric with the center of the contact lens.

These and other aspects of the present invention will become apparent from the following description of the preferred embodiments in conjunction with the following drawings. As should be obvious to those familiar with the technology, many changes and modifications of the present invention can be made without departing from the spirit and scope of the novel concept disclosed in this disclosure.

Reference will now be made in detail to the embodiments of the present invention. It will be clear to those skilled in the art that various changes and changes can be made to the present invention without departing from the scope or spirit of the present invention. For example, features illustrated or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Therefore, it is intended that the present invention covers such changes and changes as within the scope of the attached patent application and its equivalents. Other objects, features, and aspects of the present invention are disclosed in or are obvious from the following detailed description. Those skilled in the art will understand that this discussion is only a description of exemplary embodiments and is not intended to limit the broader aspects of the invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. In general, the nomenclature and laboratory procedures used here are well known and commonly used in the art. Conventional methods are used for these procedures, such as those provided in the art and various general references. When a term is provided in the singular, the inventors also considered the plural of the term.

"Contact lens" refers to an object that can be placed on or in the eye of the wearer. Contact lenses can correct, improve or change the user's vision, but this is not necessary. The contact lens can be of any suitable material known in the art or later developed, and can be a soft lens, a hard lens, or a hybrid lens. Contact lenses can be colored before printing any color pattern. Contact lenses can be in a dry or wet state. "Dry state" refers to the state of a soft lens in the state before hydration or the state of a hard lens in storage or use conditions. "Wet state" refers to a soft lens in a hydrated state.

The "front surface or front surface" of a contact lens as used herein refers to the surface of the lens that faces away from the eye during wearing. The generally convex front surface can also be referred to as the front curve of the lens.

The "rear surface or back surface" of a contact lens as used herein refers to the surface of the lens that faces the eye during wearing. The generally substantially concave rear surface can also be referred to as the base curve of the lens.

"Colored contact lens" refers to a contact lens (hard or soft) on which a colored image is printed. The color image may be a cosmetic pattern (for example, an iris-like pattern), a Wild Eye ^™ pattern, a customized (MTO) pattern, and so on. The color image can be a monochromatic image or a multicolor image. The color image is preferably a digital image, but it may also be an analog image.

The term "eye color" refers to the color of the iris of the eye.

The term "ordinary observer" is meant to refer to a person with normal 20/20 vision standing about 5 feet away from the person wearing the lens of the present invention.

The term "translucent" as used herein is intended to describe a transparent or translucent color or a part of the lens that is not colored or coated with a transparent or translucent color.

"Colored coating" refers to a coating on an object and in which a colored image is printed.

"Colorant" refers to one or more dyes or one or more pigments or mixtures of the above used to print patterns of colored elements on contact lenses.

"Dye" refers to a substance that is soluble in solvents or water and used to impart color. Dyes generally have low opacity and are almost transparent or translucent. The dye can cover the optical area of the contact lens and the non-optical area of the contact lens.

"Pigment" refers to a powdery substance suspended in a liquid in which it is insoluble. Pigments are used to impart color. Pigments are generally less opaque than dyes.

The term "conventional or non-pearlescent pigment" as used herein is intended to describe any absorbing pigment that imparts color based on the principle of diffuse scattering and whose color is independent of its geometric structure. Although any suitable non-pearlescent pigments can be used, it is currently preferred to make the non-pearlescent pigments heat-resistant, non-toxic and insoluble in aqueous solutions. Examples of preferred non-pearlescent pigments include any colorants permitted in medical devices and approved by the FDA, such as D&C Blue No. 6, D&C Green No. 6, D&C Purple No. 2, carbazole violet, certain copper complexes, Certain chromium oxides, various iron oxides, phthalocyanine green, phthalocyanine blue, titanium dioxide, etc. For a list of colorants that can be used in the present invention, see the Marmiom DM Handbook of U.S. Colorants (Marmiom DM Handbook of U.S. Colorants). More preferred embodiments of non-pearlescent pigments include (CI series color index number) but not limited to, for blue, phthalocyanine blue (pigment blue 15:3, CI 74160), cobalt blue (pigment blue 36, CI 77343) ), Toner cyan BG (Clariant), Permajet Blue B2G (Clariant); for green, phthalocyanine green (Pigment Green 7, CI 74260) and chromium trioxide; for yellow and red , Brown and black, various iron oxides; PR122, PY154, for purple, carbazole violet; for black, Monolith black CK (CIBA Specialty Chemicals).

"Pearl" refers to the luster of pearl; the actual appearance is like a pearl; or a color that has a shiny, slightly reflective appearance.

"Pearlescent pigment" refers to a type of interference (effect) pigment, which is a transparent sheet of low refractive index material coated with a thin optical coating of a high refractive index material (for example, metal oxide, for example, like titanium oxide or iron oxide) (For example, transparent mica flakes), and it is mainly based on the principle of thin film interference light to impart color. The optical thin metal oxide coating may include a single or multiple thin metal oxide layers. The thin optical coatings applied to the sheets contribute to interference effects that allow the appearance to change according to the illumination and observation conditions. The color is determined by the thickness of the coating, the refractive index and the angle of illumination. The optical thin coating is also responsible for producing a rich, deep, glossy effect due to the partial reflection of the metal oxide and the partial transmission through the mica flakes. Such pigments can provide pearl luster and iridescent effects.

The pearlescent pigments of mica flakes with oxide coating are available from Englehard Company of Iselin, NJ under the "Mearlin pigment" product line (such as "Hi-Lite interference color", "Dynacolor pearlescent pigment", "MagnaPearl", "Flamenco ", "Celini color") commercially available. Other manufacturers of pearlescent colorants are: Kemira, Savannah, Georgia, USA, and these pigments have the trade name "Flonac Lustre Colors"; and EM Industries, Hawthorne, New York, USA, These pigments have the trade name "Affair Lustre Pigments".

The term "pearlescent color" as used herein is intended to describe elements of a colored pattern coated with a pearlescent colorant color (ie, containing at least one pearlescent pigment).

In the case of pearlescent pigments, it is important to minimize flake breakage and maintain a sufficient level of dispersion during processing. Pearlescent pigments require gentle handling during the mixing process, and they should not be ground, or subjected to prolonged mixing, milling, or high shear, because such operations can damage the pigments. The particle size distribution, shape and orientation have a great influence on the final appearance. The milling, high-shear mixing, or long-term processing of pearlescent pigments should be avoided because such operations may cause delamination of the metal oxide coating, flake breakage, flake agglomeration, and flake compression. The delamination, compression, crushing and aggregation of metal oxides will weaken the pearlescent effect.

The term "shiny effect" as used here is intended to describe the combination of small elements in the design and inks that may be brighter in color than the rest of the pattern and/or have a pearlescent structure to provide the eyes with a shining luster This effect of the reflective appearance. Metallic or pearlescent pigments can impart brilliance, sparkle, or brightness by the nature of their flake type or structure. In addition, the shiny, sparkling or bright appearance can also be achieved by increasing the brightness and/or chroma of the ink color compared with other parts of the pattern or compared with the natural iris. In CIELAB terminology, this would be equivalent to comparing the L* (lightness) or C* (chromaticity) and/or natural iris of the rest of the printed pattern to elements intended to give the appearance of sparkle, sparkle, or brightness. High L* and/or C* values.

As used herein, "uneven or jagged or irregular borders or peripheral edges" refers to the radial distance (that is, from the center of the lens) of which the outermost position has a difference of at least about 20% from each other. Border or peripheral edge. As used herein, "substantially uniform boundary or peripheral edge" means that the outermost position thereon has a substantially constant radial (ie, from the center of the lens) distance (ie, the difference between each other is less than 20%) The border or peripheral edge.

The term "print coverage or percentage of dot coverage" refers to the area covered by color dots in the total area as measured by Adobe Photoshop graphic image editing software to determine the number of pixels on the area part. The percentage of printing coverage is calculated as follows:% printing coverage = [(number of pixels in dot coverage area)/(number of pixels in total area)] × 100 total area = printed area + unprinted area "Hydrogel" means A cross-linked polymer with an equilibrium moisture content between about 10% and 90%.

"Lens forming material" refers to a polymerizable component that can be cured (ie, polymerized and/or cross-linked) thermally or photochemically (ie, by actinic radiation) to obtain a cross-linked polymer. Examples of actinic radiation are UV radiation, ionizing radiation (such as gamma rays or X-ray radiation), microwave radiation, and so on. Thermal curing or photochemical curing methods are well known to those skilled in the art. Lens forming materials are well known to those familiar with the technology, such as HEMA-based hydrogels and silicone hydrogels.

"HEMA-based hydrogels and silicone hydrogels" refer to hydrogels obtained by copolymerization of polymerizable components including hydroxyethyl methacrylate (HEMA).

"Silicone hydrogel" refers to a hydrogel obtained by the copolymerization of a polymerizable component, the component including at least one silicone-containing monomer or at least one silicone-containing macromonomer.

"Hydrophilic" as used herein describes a material or part thereof that will associate more easily.

"On-mold printing process for producing colored contact lenses" refers to the process for molding colored contact lenses described in Rawlings et al., US Patent No. 5,034,166 (incorporated herein by reference) .

The present invention relates to a colored contact lens designed to enhance the natural color of the wearer's eyes and make them more eye-catching, while providing an appearance that is very natural for ordinary observation.

For example, certain dark eye contact lens consumers have shown an interest in enhancing their eyes without drastically changing their natural color. They want their eyes to appear darker, more eye-catching, bigger, and more shiny, while remaining natural by blending seamlessly with the eyes. However, these consumers do not want anyone to know that they wear contact lenses, and any design should be natural. Consumers of light-colored (ie, blue or green) and intermediate-colored (ie, hazel, light brown) contact lenses have also shown a similar interest in sharply and naturally enhancing their eyes.

It has been found that this type of cosmetic effect (ie, enhancing the wearer’s eye color and making them more eye-catching, while providing a very natural appearance) can improve the wearer’s eyes, especially their limbus, by adding colored designs to contact lenses The contrast is achieved. This design can be applied by printing onto the contact lens via conventional means. The present invention has demonstrated certain designs and colors that provide this color on the eyes while blending with the natural color of the wearer's eyes. The invention described here is a series of rings placed on top of each other to provide the desired effect. This first printing layer has a diffuse pattern of gradient dots that allows the underlying corneal limbus and iris structures to be seen. The first print design of the present invention helps to provide two attributes of natural appearance pattern and high contrast of the wearer's natural eyes, especially when the first print and the second print are superimposed. The first print blocks some of the light reflecting off the iris below and allows a good fusion with the natural eye. The second printing is a circular speckle pattern. The circular speckle pattern includes a plurality of circularly distributed clusters of irregular speckle shapes, and the speckle shape is composed of a large number of small dots. The circular speckle pattern has irregularities. Smooth inner and outer boundaries.

The second print is located inside the first print, and a circular border separates the first and second prints, where the circular border is flat or jagged, where the first color and the second color are different or the same, Among them, the first print and the circular border are concentric with the center of the contact lens. The width of the speckle circular pattern is about 30%-90% of the width of the circular gradient lattice. The second printing of the circular speckle pattern can enhance the first printing of the circular speckle pattern. The circular ring-shaped speckle pattern is superimposed with the circular ring-shaped gradient dot matrix pattern, wherein the inner diameter of the speckle pattern is smaller than the inner diameter of the gradient dot ring and the centers of the rings are concentric with each other. Compared with the unenhanced circular gradient dot matrix pattern, the enhanced circular gradient dot matrix pattern provides an even more attractive design, and the eyes feel even larger and more eye-catching.

The two stacks provide the desired colored design, which covers more than a single layer itself and emphasizes the wearer's natural limbal ring and eye color. On the eyes, the pattern provides an attractive design, and the eyes feel larger and more eye-catching. It has also been found that this type of cosmetic effect (ie, enhancing the wearer's eye color and making them more eye-catching, while providing a very natural appearance) is particularly effective for contact lens wearers with dark eyes and many other eye colors. This larger appearance is produced by increasing the size of the design pattern so that it produces a larger pattern on the final lens to achieve the desired ocular appearance with a larger iris. This first print pattern in this patent application is intended to cover the outer part of the natural iris (outside the natural pupil area), the natural limbus, and the natural sclera section just outside the natural iris. Therefore, according to this patent application, the first printed circular ring-shaped gradient dot matrix pattern is enlarged to create a larger appearance and the second printed circular circular speckle pattern is used to enhance the appearance. It is further found that the above-mentioned contact lens further includes a third print of a third color, which will give natural dark eyes brightness and depth. The same or additional colors, shades and shades add further depth, thereby providing a contact lens that can make subtle changes and enhance the color of the iris of dark-eyed people wearing the lens while giving a very natural appearance. According to this application, the third print is the first tulip flower ring pattern, and the third print has an outer diameter that is exactly the same as or smaller than the outer diameter of the second print; the third print has an inner diameter smaller than that of the second print. The shape of the tulip flower includes two elements: the first element is a worm-like shape with a thicker center and a first end and a thinner second end; the second element is a mirror image of the first element , The first end of the first element and the first end of the second element converge and touch each other, while the second end of the first element and the second end of the second element diverge, in which the tulip flowers repeat in a circle around In order to form a ring with a convergent point pointing inward, the first color, the second color and the third color are different or the same, and the first print, the second print and the third print are concentric with the center of the contact lens.

It is still further discovered that the above-mentioned contact lens further includes a fourth print of a third color, and the fourth print is a second tulip flower ring pattern, in which the divergence point is formed inward (toward the pupil) by repeating the tulip flower circularly around it To form the second tulip wreath. The fourth print has a ring of golden fragrant flowers around to form a ring with the divergence point pointing inward (toward the pupil), and the third print has a ring of golden fragrant flowers with a surrounding ring to form a ring with the convergence point pointing inward (toward the pupil). Since the third print pattern and the fourth print pattern are offset, leeway is given to emphasize the same or additional colors to give the contact lens pattern a more natural appearance and add further depth.

According to this patent application, a combination of small elements in the design and inks that may be brighter in color than the rest of the pattern or have a pearlescent structure can be used to give eyes sparkle, sparkle, or brightness. Metallic or pearlescent pigments can give shine, sparkle, or brightness by the nature of their flake type or structure; however, sparkle, sparkle or bright appearance can also be compared with other parts of the pattern or compared with natural iris This can be achieved by increasing the brightness and/or chroma of the ink. In CIELAB terminology, this would be equivalent to comparing the L* (lightness) or C* (chromaticity) and/or natural iris of the rest of the printed pattern to elements intended to give the appearance of sparkle, sparkle, or brightness. High L* and/or C* values.

In the CIELAB color space, the L* value refers to the brightness of a color compared with the gray scale ranging from black to white. C* refers to the chromaticity of the color, or the degree of deviation of the color from the gray scale. This is similar to but not exactly the same as color saturation. The hue angle h° refers to the color tones that can be considered as basic color names: red, orange, yellow, green, blue, and purple.

In order to impart sparkle, sparkle, or brightness to the contact lens, the expected element should be between 10 and 90 L* units higher than other colors used in cosmetic lenses, or the C* of the expected element should be higher than other colors used in cosmetic lenses Between 10 and 90 C* units higher. Ideally, both L* and C* should be between 10 and 90 units higher than other colors used in cosmetic lenses.

For example, a print pattern with a black outer ring and some brown speckle pattern elements that are intended to blend into the eyes can also include some spots, such as small flame shapes that may be orange or yellow in color, and may or may not include pearly luster Pigments, such as mica. In terms of its properties, orange and yellow colors have higher L* and C* values than brown because brown is considered a low-chroma orange and is not considered a hue in itself. In this example, orange and yellow will be at least 10 L* units and/or C* units higher than black and brown used in the lens.

The hue of the element intended to give a sparkle may or may not be similar to the ink in the rest of the print pattern. For example, blue elements with higher L* and C* units can be used on this cosmetic lens that would otherwise be brown and black.

In one aspect, the present invention provides a colored contact lens. The colored contact lens includes a first print of a first color and a second print of a second color, wherein the first print is a circular gradient dot matrix, wherein the The second printing is a circular speckle pattern, wherein the circular speckle pattern includes a plurality of circularly distributed clusters of regular or irregular shapes, wherein the regular or irregular shapes are composed of a large number of dots, and , The circular speckle pattern has a non-smooth inner and outer boundary, wherein the second printing is located inside the first printing, wherein the first color and the second color are different or the same, wherein the first printing Concentric with the second print and the center of the contact lens.

As is well known in the art, colors are generally explained by the following mutually related terms: hue, chroma, intensity, saturation, illuminance, brightness, value, and opacity.

The term "different colors" is intended to describe that two colors are different in at least one of hue, chroma, intensity, saturation, illuminance, brightness, value, and opacity. As used herein, the term "the second color is different from the first color" (or some similar language) means that the two colors belong to completely different colors, such as blue and hazel; or the two colors are the same The hue, but with different brightness and value, such as light blue and dark blue.

The term "circular gradient dot matrix" means to gradually increase the coverage of the local colored dots in the radial direction (from the center to the edge) of the circular ring by increasing the printing density. For example, a greater number of printed colored dots in the area near the outer peripheral edge of the ring causes the appearance of the outer peripheral edge of the ring that is deeper than the inner peripheral edge of the ring. Alternatively, although the spacing of the centers of each point is fixed, the larger-sized colored dots in the area near the outer peripheral edge of the ring cause the appearance of the outer peripheral edge of the ring that is deeper than the inner peripheral edge of the ring. Alternatively, the print density can be reduced by removing the print area, such as by removing the print from the high print density area (ie, circular blank). The inner peripheral edge of the ring refers to the edge closest to the center of the colored lens. The outer peripheral edge of the ring refers to the edge farthest from the center of the colored lens. Alternatively, the gradient point array may be composed of a uniform point density.

The printed colored dot area or empty area can have any shape, regular or irregular, such as a circle, an oval, a triangle, a square, a hexagon, an elongated shape, and the like. All colored dot areas or empty areas can have similar or different shapes. Preferably, all printed dot areas or empty areas have substantially similar shapes. More preferably, all printed dot areas or empty areas have a circular shape.

The range of dot size is preferably from 0.01 mm to about 0.5 mm. The spacing between the dots is preferably from 0.01 mm to about 0.3 mm. Also, the printed area to be removed is a circle from 0.01 mm to about 0.3 mm (ie, a circular blank), and the pitch is from 0.01 mm to about 0.3 mm.

Figure 1 shows a prior art contact lens as an example. The contact lens has a transparent pupil section 20 and an annular iris section 21 surrounding the pupil section in the center of the lens. For hydrophilic lenses, the transparent peripheral section 22 surrounds the iris section 21. The colored, opaque, intermittent pattern is located on the entire iris section 21, as shown in FIG. 1. This pattern leaves most of the iris section in the light-transmitting gap of the pattern. The light-transmitting area of the iris section 21 appears white in FIG. 1.

Fig. 2 schematically shows the "first printing pattern" composed of a circular gradient dot matrix as an example. The dots, preferably opaque dots, can have any shape, regular or irregular, such as circular, oval, triangular, square, hexagonal, elongated, and the like. All points can have similar or different shapes. Preferably, all points have a substantially similar shape. More preferably, all points have a circular shape. The first print pattern is concentric with the center of the lens and has a substantially uniform outer peripheral edge and a substantially uniform inner peripheral edge. The outer peripheral edge of the first print has a diameter from about 12.5 mm to about 15 mm, and the width of the first print is from about 0.8 mm to about 3.5 mm, and preferably from about 2.0 mm to about 3.0 mm. The first print can be of any color, for example, black, blue, gray, brown, light blue, cyan, purple, dark purple, blue-violet, light green, yellow or green. The preferred color of the first print is black or brown.

Figure 3 shows the "second printing pattern" which is a circular speckle pattern. According to the present application, the circular speckle pattern includes a plurality of circularly distributed clusters of regular or irregular shapes, such as circular, oval, triangular, square, hexagonal, elongated, etc., wherein the The regular or irregular shape is composed of a large number of dots. According to the present invention, a large number of dots refers to from 4 to 2500, preferably from 10 to 1500, more preferably from 15 to 500 and even more preferably from 20 to 300 Dots. The width of the speckle circular pattern is about 30%-90% of the width of the circular gradient lattice.

Figure 4 shows the "third print pattern" of the tulip flower-shaped pattern according to the present invention. The third print is the first tulip flower ring pattern, which has a shape including the following two elements: the first element is a worm-like shape with a thicker center and thinner at the first and second ends; the second element is the first A mirror image of an element, the first end of the first element and the first end of the second element converge and touch each other, while the second end of the first element and the second end of the second element diverge, among which the tulip flowers are around Repeatedly forming a ring, the convergence point is directed inward to form a U-shaped cup shape.

The third element is a reduced version of the size of the first element and is located in the U-shaped cup and contacts at least one side.

According to the present invention, the tulip flower shape can contain all three elements, or only the first two elements as appropriate. This shape repeats circularly around to form a ring with a convergence point pointing inward.

Figure 5 shows the "fourth print pattern" which is the second tulip flower pattern according to the present invention. The second tulip flower-shaped pattern is also composed of a tulip flower shape that has been repeated around a circle. The second tulip flower-shaped pattern is the same as the first tulip flower-shaped pattern shown in FIG. 3 except for the following items: 1) The tulip flower shape repeats circularly around to form a ring with a convergence point pointing inward toward the center of the contact lens pattern; 2) The tulip flower shape is smaller or larger.

Figure 6 shows an example of a contact lens that contains two printed patterns to form an enhanced outer ring pattern. The enhanced outer ring pattern is a combination of the circular gradient lattice of Figure 2 and the circular speckle pattern of Figure 3 . The inner diameter of the circular speckle pattern is smaller than the inner diameter of the gradient dot ring and the centers of the rings are concentric with each other. This circular speckle pattern produces a better fusion with the natural iris.

Figure 7 shows an example of a contact lens containing three print patterns (Figure 2, Figure 3, and Figure 4) according to the present invention. The top pattern of the design of Fig. 7 is the three printing patterns with a dark and well-defined outer ring specifically intended to increase the appearance of the diameter of the iris. The circular speckle pattern (Figure 3) is superimposed with the gradient dot pattern (Figure 2). The circular speckle pattern includes a plurality of circularly distributed clusters of regular or irregular shapes, wherein the regular or irregular shapes are composed of a large number of dots. The circular speckle pattern has non-smooth inner and outer boundaries. According to the present invention, the width of the speckle circular pattern is about 30%-90%, preferably about 35%-80%, and more preferably 40%-70 of the width of the circular gradient lattice. %. When the layers are evaluated individually, the inner diameter of the speckle pattern is smaller than the inner diameter of the gradient point ring and the centers of the rings are concentric with each other. This speckle pattern creates a better blend with the natural iris. Fig. 6 shows a pattern combination forming an enhanced outer ring pattern.

Figure 8 shows a third example of a contact lens containing four print patterns (Figure 2, Figure 3, Figure 4, and Figure 5) according to the present invention. The top pattern of the design in Fig. 8 is the four printing patterns with a dark and well-defined outer ring specifically intended to increase the appearance of the diameter of the iris. The fourth layer is a second tulip flower ring pattern composed of similar tulip flower shapes, and the tulip flower shapes repeat around the ring in a different way from the first tulip flower ring pattern.

The second tulip flower ring pattern also has a shape including the following two elements: the first element is a worm-like shape with a thicker center and thinner at the first and second ends; the second element is a mirror image of the first element , The first end of the first element and the first end of the second element converge and touch each other, while the second end of the first element and the second end of the second element diverge, in which the tulip flowers repeat in a circle around To form a ring, the points of dispersion point inward (toward the pupil) to create a U-shaped cup shape.

The third element is a reduced version of the size of the first element and is located in the U-shaped cup and contacts at least one side.

This shape can contain all three elements, or only the first two elements as appropriate. For the first tulip flower print pattern layer shown in FIG. 4, this shape repeats circularly around to form a ring with a convergence point pointing inward (toward the pupil). For the second tulip flower print pattern shown in FIG. 5, other pattern layers use this shape, which is also circularly repeated around to form a ring, but the divergence point is directed inward (toward the pupil).

The combination of the four patterns creates a thick dark outer ring that blends with the other layers and the natural iris and a lace structure with thick and long waves randomly overlapping, so that there is a non-covered area and an area where the two layers overlap to create a natural iris. It blends well and can provide depth, sparkle or sparkle to the appearance of the lens.

Figure 8 shows a combination of four patterns. The first tulip print pattern in this design is approximately 85% to 95% of the diameter of the enhanced outer ring print pattern. In addition, the second tulip flower-shaped printing pattern is approximately 80% to 95% of the diameter of the enhanced outer ring printing pattern.

On the eyes, the pattern according to the present invention provides an attractive design and feels that the eyes are larger and more eye-catching.

Colored contact lenses can be made by directly applying ink to pre-formed contact lenses. The preferred method for applying ink to contact lenses according to the present invention is printing by using inks, preferably water-based inks (eg, pad printing and/or inkjet printing).

The ink typically includes at least one coloring agent, a binder polymer, and a solvent. The ink may optionally include crosslinking agents, wetting agents, surfactants, monomers, polymerization initiators, antimicrobial agents, antioxidants, anti-kogation agents, and other additives known in the art.

The colorant includes at least one dye or preferably one pigment. Conventional and/or pearlescent pigments can be used in the present invention.

The solvent can be water (water-based ink) or any suitable organic solvent (organic solvent-based ink). Any known suitable solvents can be used as long as they can dissolve the binder in the ink of the present invention and contribute to the stability of the colorant. Examples of preferred solvents include water, or water mixed with one or more co-solvents. Alternatively, organic solvents such as ethanol, ethylene glycol, ketones, esters, methyl ethyl ketone, cyclopentanone, and cyclohexanone may be used.

"Binder polymer" refers to a crosslinkable polymer that includes a crosslinkable group and can be used by a crosslinking agent or when chemical or physical means (eg, moisture, heat, UV radiation) Etc.) When initiated, it can be cross-linked to trap or bond the colorant to or in the contact lens (such as items known in the art).

The term crosslinkable group is used in a broad sense here and it is intended to cover, for example, functional groups and photocrosslinkable groups or thermally crosslinkable groups that are well known to those skilled in the art. It is well known in the art that a pair of matched crosslinkable groups can form a covalent bond or connection under the following known reaction conditions: such as redox conditions, dehydration condensation conditions, addition conditions, substitution (replacement) conditions, free Base polymerization conditions, 2+2 cycloaddition conditions, Diels-Alder reaction conditions, ROMP (ring-opening metathesis polymerization) conditions, vulcanization conditions, cationic crosslinking conditions and epoxy resin curing conditions. For example, amine groups can be covalently bonded with aldehydes (the Schiff base formed by aldehyde groups and amine groups can be further reduced); hydroxyl and amine groups can be covalently bonded to carboxyl groups; carboxyl and sulfo groups can be Covalently bonded to a hydroxyl group; a mercapto group can be covalently bonded to an amine group; or a carbon-carbon double bond can be covalently bonded to another carbon-carbon double bond. Exemplary covalent bonds or connections formed between multiple pairs of crosslinkable groups include, but are not limited to, alkanes (carbon-carbon single bonds), olefins (carbon-carbon double bonds), esters, ethers, acetals, ketals, Vinyl ether, urethane, urea, amine, amide, enamine, imine, oxime, amidine, iminoester, carbonate, orthoester, phosphonate, phosphinate, sulfonate , Sulfinate, sulfide, sulfate, disulfide, sulfinamide, sulfonamide, thioester, aryl, silane, siloxane, heterocycle, thiocarbonate, thioaminomethyl Acid esters and phosphamide.

Exemplary crosslinkable groups include, but are not limited to, hydroxyl, amino, amide, sulfhydryl, -COOR (R and R'are hydrogen or C ₁ to C ₈ alkyl), halide (chloride, bromide) , Iodide), chloro, isothiocyanate, isocyanate, monochlorotris, dichlorotris, mono- or di-halogenated pyridine, mono- or di-halogenated di-, phosphorous amide, maleic acid Amine, aziridine, sulfonamide, hydroxysuccinimide, hydroxythiosuccinimide, imidate, hydrazine, azidonitrophenyl group, azide, 3-(2- Pyridyl) acrylamide, glyoxal, aldehyde, epoxy resin, ethylenically unsaturated free radicals.

The binder polymer in the ink can be any polymer compatible with the lens material. The binder polymer can be prepared by containing vinyl alcohol, vinyl butyral, vinyl acetate, acrylic acid, methacrylic acid, hydroxyl C ₁ to C ₆ acrylic acid and alkyl methacrylate, and amino C ₁ to C ₈ acrylic acid. It is prepared by polymerization of monomers such as alkyl methacrylate, acrylic acid and glyceryl methacrylate, vinylpyrrolidone, vinyl chloride, hydroxyethyl methacrylate, dimethylacrylamide, etc. Mixtures of these monomers can be made to form many different copolymers. Other copolymers may include a variety of different cellulose resins, polyesters, polyurethanes, polyureas, or polyamides having at least one crosslinkable group. Preferably, the monomer used in preparing the adhesive polymer is the same as the monomer used in preparing the lens.

The ink for printing the colored lens of the present invention can be prepared according to any known suitable method. For example, first, a solution of a binding polymer and a solvent is prepared and this solution is mixed with a paste containing a colorant to form an ink.

Pad printing is well known in the art (for example, see Spivack 's US Patent No. 3,536,386; Knapp 's US Patent No. 4,582,402 and 4,704,017; Rawlings et al. US Patent No. 5,034,166, these patents are incorporated herein by reference in their entirety). The following is a typical example of such printing. The image is etched into the metal to form a cliche. Place the stereotype in the printer. Once in the printer, the cliche is inked by the open ink pool scraping system or by sliding the closed ink cup over the image. Then, the silicone pad picks up the inked image from the cliche and transfers the image to the contact lens. The silicone pad is made of a material including silicone whose elasticity can be changed. The properties of the silicone material allow the ink to temporarily stick to the pad and completely release the ink from the pad when it comes in contact with the contact lens or mold. Suitable pad printing structures include, but are not limited to, Tampo type printing structures (Tampo vario 90/130 type), rubber stamps, thimbles, doctor blades, direct printing, or transfer printing, as they are known in the art.

Any known suitable silicone pad can be used in the present invention. Silicone pads are available on the market. However, different pads can give different printing qualities. Those familiar with this technique should know how to choose a pad for a given ink.

The cliche can be made of ceramic or metal (for example, steel). When the cliche is made of steel, it would be desirable to neutralize the pH of the water-based ink (for example, adjust the pH to 6.8 ~ 7.8) by adding a buffer (for example, like phosphate). The image can be etched into the cliche according to any method known to those skilled in the art, such as chemical etching or laser ablation. It is also desirable to clean the lead plates after use using standard cleaning techniques known to those skilled in the art, such as, for example, immersion in a solvent, sonication, or mechanical abrasion.

It should be understood that the front (convex) surface or the back (concave) surface of the lens can be printed, but it is currently preferred to print the front surface.

The use of inkjet printing processes to print lenses is described in published U.S. patent applications Nos. 2001/0050753, 2001/0085934, 2003/0119943, and 2003/0184710, which are incorporated herein by reference in their entirety.

According to a preferred embodiment, the colored contact lens may further include a transparent coating covering at least the colored area of the lens. The clear coating can be formed on the colored area by coating a transparent polymerizable solution layer without any colorant on the surface of the lens using color printing and then polymerizing the transparent polymerizable solution layer. The clear coating can minimize the leaching of the colorant and can enhance the comfort of the wearer.

Alternatively, the colored contact lens of the present invention can be made according to a similar on-mold printing process as described in Rawlings et al., US Patent No. 5,034,166 (incorporated herein by reference). The ink can be first applied to the molding surface of one or more mold parts by using pad printing (or transfer printing) or inkjet printing to form a colored coating (color image). The colored coating may be applied on the molding surface defining the back (concave) surface of the contact lens or on the molding surface defining the front (convex) surface of the contact lens or on both mold parts. Preferably, a colored coating (with a colored image) is applied on the molding surface that defines the front surface of the contact lens.

Optionally, the transferable coating may be applied to the molding surface of the mold by pad printing before applying the ink. The transfer coating is intended to describe a coating that can be separated from the molding surface of the mold and integrated with the contact lens body molded in the mold. The transferable coating can be applied to the molding surface of the mold by any suitable technique (for example, like spraying, printing, brushing, or dipping). The transferable coating can be prepared from a solution that includes a polymerizable component and does not have any colorant. For example, a transferable coating having a substantially uniform thickness (less than 200 microns) can be prepared by spraying a molding surface with a solution or prepolymer or solution having ink components to be used or a lens forming material to be used. This transferable coating can optionally be dried or cured to form a transferable transparent film (without any pigments but optionally with dyes including reactive dyes). One or more colored patterns can then be printed on this transferable coating or film. By applying a transferable coating before printing, colored lenses can be produced in which a printed colored pattern is embedded directly under the film derived from the transferable coating. This type of lens is more comfortable to wear and is much less affected by the colorant leached from the colored lens.

After printing the ink of the present invention on the molding surface of the mold, the printed ink can be cured by UV or other actinic radiation to form the colored film according to the present invention. It is desirable that the printed ink is cured actinically to the extent that the loss of pattern clarity of the colored coating produced by subsequent filling of the lens forming material is minimized.

Lens molds for making contact lenses are well-known to those skilled in the art, and are used, for example, in cast molding or rotary casting. For example, a mold (for cast molding) usually includes at least two mold regions (or parts) or mold halves, namely the first and second mold halves. The first mold half defines a first molding (or optical) surface and the second mold half defines a second molding (or optical) surface. The first and second mold halves are configured to receive each other so that a lens forming cavity is formed between the first molding surface and the second molding surface. The molding surface of the mold half is the cavity forming surface of the mold and is in direct contact with the lens forming material.

The method of manufacturing the mold area for casting and molding contact lenses is generally well known to those skilled in the art. The method of the present invention is not limited to any specific method of forming a mold. In fact, any mold forming method can be used in the present invention. The first and second mold halves can be formed by various techniques (such as injection molding or lathe processing). Examples of suitable methods for forming the mold halves are disclosed in Schad's U.S. Patent No. 4,444,711; Boehm et al. 4,460,534; Morrill et al. 5,843,346; and Boneberger et al. 5,894,002, which patents are also incorporated herein by reference .

Almost all materials known in the art for making molds can be used to make molds for making contact lenses. For example, you can use polymer materials such as polyethylene, polypropylene, polystyrene, PMMA, Topas® COC grade 8007-S10 (from Frankfurt, Germany and Summit, New Jersey) The transparent amorphous copolymer of ethylene and norbornene from Ticona GmbH (Ticona GmbH) and so on. Other materials that allow UV transmission, such as quartz glass and sapphire, can be used.

Any lens forming material can be used in the present invention and is not currently considered to be a critical part of this aspect of the present invention. Suitable lens forming materials in the manufacture of contact lenses are described by many issued U.S. patents and are familiar to those skilled in the art. Preferred lens forming materials are capable of forming hydrogels. The lens forming material may include one or more prepolymers, optionally one or more vinyl monomers and/or macromers, and optionally further include a variety of different components, such as photoinitiators, visibility coloring agents, fillers, etc. . It should be understood that any silicone-containing prepolymer or any silicone-free prepolymer can be used in the present invention.

A preferred group of lens forming materials are water-soluble and/or meltable prepolymers as described above. It would be advantageous that the lens forming material mainly comprises one or more prepolymers (e.g., purified by ultrafiltration), preferably in a substantially pure form. Therefore, after cross-linking/polymerization by actinic radiation, contact lenses may actually no longer require subsequent purification, such as the extraction of complex unpolymerized components. In addition, the crosslinking/polymerization can be carried out in the absence of a solvent or in an aqueous solution, so that subsequent solvent exchange or hydration steps are unnecessary.

Those who are familiar with this technology should have a good understanding of how to cure the lens forming material actinically or thermally in the lens forming cavity.

In a preferred embodiment, when the lens forming material is a solution, a solvent-free liquid, or a melt of one or more prepolymers in the presence of other components, a reusable mold is used and the Under the space limitation of actinic radiation, the lens forming material is actinically cured to form a colored contact lens. Examples of preferred reusable molds are U.S. Patent Application No. 08/274,942 filed on July 14, 1994, 10/732,566 filed on December 10, 2003, and 10 filed on November 25, 2003. /721,913, and U.S. Patent No. 6,627,124 (these patents are incorporated by reference in their entirety).

In this case, the lens forming material is put into a mold composed of two mold halves, which do not touch each other but are arranged with a narrow gap of annular design between them. The gap is coupled to the mold cavity so that excess lens material can flow away into the gap. Instead of using polypropylene molds that can only be used once, reusable quartz, glass, or sapphire molds can be used, because after the production of lenses, water or a suitable solvent can be used to clean and quickly dry the molds to effectively remove uncrosslinked Of prepolymers and other residues. ^{Reusable molds can also be made from Topas ®} COC grade 8007-S10 (transparent amorphous copolymer of ethylene and norbornene) from Summit, New Jersey, USA and Ticona GmbH, Frankfurt, Germany. Since the mold halves are not in contact with each other in the area of the lens to be produced (ie, the cavity or the actual mold surface), damage caused by contact is eliminated. This ensures a long service life of the mold, which in particular also ensures high reproducibility of the contact lenses to be produced.

The two opposite surfaces (front and back) of the contact lens are defined by two molding surfaces, and the edges are limited by the space of actinic radiation rather than by the mold walls. Typically, only the lens-forming material in the area constrained by the two molding surfaces and the protrusions of the well-defined peripheral boundary of the space restriction is cross-linked, and any lens outside and immediately adjacent to the peripheral boundary of the space restriction The forming material is not cross-linked, and therefore the edge of the contact lens should be a smooth and accurate reproduction of the spatially limited size and geometric shape of the actinic radiation. U.S. Patent Application No. 08/274,942 filed on July 14, 1994, 10/732,566 filed on December 10, 2003, 10/721,913 filed on November 25, 2003, and U.S. Patent No. 6,627,124 (the Such patents are incorporated herein by reference in their entire contents) describing this type of method of manufacturing contact lenses.

The spatial restriction of actinic radiation (or the spatial restriction of energy impact) can be achieved by masking at least part of the mold that is impermeable to the specific form of energy used (for example, U.S. Patent Application No. 08/274,942 filed on July 14, 1994 And U.S. Patent No. 6,627,124 (the entire contents of which are incorporated herein by reference) or by a form of energy that is highly permeable at least on one side to cause crosslinking and has a mold that is impermeable to the energy or has poor energy permeability Part of the mold (such as US Patent Application No. 10/732,566 filed on December 10, 2003, 10/721,913 and US Patent No. 6,627,124 filed on November 25, 2003 (the entire contents of which are incorporated herein by reference) Shown) to achieve. The energy used for crosslinking is radiation energy, especially UV radiation, gamma radiation, electron radiation or thermal radiation. The radiation energy is preferably in the form of substantially parallel beams, so as to achieve good confinement on the one hand, and on the other hand Realize the efficient use of this energy.

It should be understood that the ink of the present invention should have good transferability of the colored coating from the mold to the contact lens and good adhesion to the molded lens. The resulting colored contact lens is substantially smooth and continuous on the surface containing the colored film.

Good transferability and adhesion can be largely caused by the interspersed network formation during the curing of the lens forming material in the mold. Without limiting the present invention to any specific mechanism or theory, it is believed that the ink adhesive of the present invention can form an interpenetrating network (IPN) with the lens material of a hydrogel lens. The ink of the present invention is formed by IPN to adhere to the lens without the presence of reactive functional groups in the lens polymer. In the presence of a cross-linked binder polymer in the colored film, the lens forming material is cross-linked to form an IPN. It should be understood that some (residual) ethylenically unsaturated groups in the binder polymer may not be consumed during the curing process of the colored coating. The remaining ethylenically unsaturated groups may undergo a cross-linking reaction during the curing process of the lens forming material in the mold to bond the binder polymer to the lens material.

It should also be understood that the adhesion between the lens and the ink can be enhanced by the direct connection (bond formation) between the binder polymer and the lens polymer. For example, binder polymers containing nucleophilic groups can react with lens polymers containing electrophilic groups such as epoxy resins, acid anhydrides, alkyl halides, and isocyanates. Alternatively, the ink can be bonded to the lens by having an electrophilic group in the ink binder polymer and a nucleophilic group in the lens polymer. It is also possible to combine both nucleophilic and electrophilic functions into the binder polymer to make curable inks.

In another aspect, the present invention covers a method for making colored contact lenses, the method comprising the following steps: (a) providing a preformed contact lens; and (b) printing a first color opaque colored dot pattern Coated on the surface of at least one of the front surface and the back surface of the contact lens, wherein the first print is a circular gradient lattice, (c) the second print of the second color is opaque and colored A dot pattern is applied to the surface of the contact lens, wherein the second print is a circular speckle pattern, wherein the circular speckle pattern includes a ring-shaped cluster of regular or irregular shapes, wherein, The speckle shape is composed of a large number of small dots, wherein the circular speckle pattern has a non-smooth inner and outer boundary, wherein the second print is located on the inner side of the first print, wherein the first color and the second The colors are different or the same, wherein the first print and the second print are concentric with the center of the contact lens.

In yet another aspect, the present invention encompasses a method for making colored contact lenses, the method comprising the following steps: (a) providing a mold including a first mold half having a first molding surface and a second mold having a first molding surface. The second mold half of the molding surface, the first mold surface defines the front surface of the contact lens, and the second mold surface defines the back surface of the contact lens, wherein the first mold half and the second mold half are The configuration is to receive each other, so that a contact lens forming cavity is formed between the first molding surface and the second molding surface; Two printed opaque colored dot patterns are applied to at least one of the molding surfaces of the lens mold, wherein the second printing is a circular speckle pattern, wherein the circular speckle pattern includes a plurality of Annularly distributed clusters of irregular shapes, where the speckle shape is composed of a large number of small dots, where the circular speckle pattern has a non-smooth inner and outer boundary, and (c) by using pad printing or inkjet printing technology A first printing opaque colored dot pattern of a first color is coated on the surface of the mold, wherein the first printing is a circular gradient dot matrix, wherein the second printing is located on the surface of the first printing Inside, where the first color and the second color are different or the same, and where the first print and the second print are concentric with the center of the contact lens.

Any known suitable lenses made of lens forming materials can be used to practice the present invention. Preferably, hydrogel lenses or silicone-containing hydrogel lenses are used to practice the present invention. Examples of preferred lenses include, but are not limited to, the lenses described in Loshaek's U.S. Patent No. 4,668,240 (the entire contents of which are incorporated herein by reference), U.S. Patent Nos. 5,583,163 and 6,303,687 (the entire contents of which are incorporated herein by reference) ) Described in the water-soluble cross-linkable poly(vinyl alcohol) prepolymer lens, US Patent No. 6,479,587 (the entire contents of which are incorporated herein by reference) and filed on November 25, 2003 The title is "Crosslinkable polyurea prepolymers (crosslinkable polyurea prepolymers)" (the entire contents of which are incorporated herein by reference) and the co-pending U.S. Patent Application No. 60/525,100 described in Lenses made of polyurea prepolymer and so on. It should be understood that any commercially available lens (for example, like FOCUS DAILIES®, ACUVUE®, etc.) can be used to practice the present invention.

Although a number of different embodiments of the present invention have been described using specific terms, devices, and methods, such descriptions are for illustrative purposes only. The words used are descriptive rather than restrictive words. It should be understood that changes and changes can be made by those skilled in the art without departing from the spirit or scope of the present invention set forth in the scope of the following patent applications. In addition, it should be understood that various aspects of the different embodiments may be interchanged in whole or in part. Therefore, the spirit and scope of the scope of the appended application should not be limited to the description of the better version contained therein.

10‧‧‧Contact lens 20‧‧‧Pupillary section 22‧‧‧peripheral section

[Figure 1] shows the prior art contact lens;

[Figure 2] shows the first printing pattern of the circular gradient dot matrix pattern according to the present invention;

[Figure 3] shows the second printing pattern which is a circular speckle pattern.

[Figure 4] shows the third print pattern of the first tulip flower ring pattern.

[Figure 5] shows the fourth printing pattern which is the second golden fragrant flower ring pattern.

[Figure 6] shows an example of a contact lens containing two printed patterns (Figure 2 and Figure 3) according to the present invention.

[Figure 7] shows an example of a contact lens containing three printed patterns (Figure 2, Figure 3, and Figure 4) according to the present invention.

[Figure 8] shows a third example of a contact lens containing four printed patterns (Figure 2, Figure 3, Figure 4, and Figure 5) according to the present invention.

Claims (14)

A colored contact lens, comprising a first print of a first color and a second print of a second color, wherein the first print is a circular gradient dot matrix, wherein the second print is a circular speckle pattern, Wherein, the ring-shaped speckle pattern includes a plurality of ring-distributed clusters of regular or irregular shapes, wherein the regular or irregular shapes are composed of a large number of dots, and the ring-shaped speckle pattern is not smooth The inner and outer boundaries of the contact lens, wherein the second print is located inside the first print, wherein the first color and the second color are different or the same, and the first print and the second print are concentric with the center of the contact lens . The colored contact lens described in item 1 of the scope of patent application, wherein the first print has a color selected from the group consisting of black, gray, brown, and blue. The colored contact lens described in item 1 of the scope of patent application, wherein the second print has a color selected from the group consisting of black, gray, brown, and blue. The colored contact lens described in item 1 of the scope of patent application, wherein the outer peripheral edge of the first print has a diameter from 12.5 mm to 15 mm, and the width of the first print is from 0.8 mm to 3.5 mm. The colored contact lens described in item 4 of the scope of patent application, wherein the first print has a width from 2.0 mm to 3.0 mm. The colored contact lens described in item 1 of the scope of patent application, wherein the width of the circular speckle pattern is 30%-90% of the width of the circular gradient dot matrix. The colored contact lens described in claim 1, wherein the speckle ring pattern includes a pearlescent color, and wherein the pearlescent color element includes at least one pearlescent pigment in an amount sufficient to impart a starlight pattern to the inner starlight pattern of the contact lens Provides the desired amount of pearlescent to give the wearer's eyes a shiny appearance. The colored contact lens described in item 1 of the scope of patent application further includes a third print of a third color, wherein the third print is a first tulip flower ring pattern having a shape including the following two elements: the first element A worm-like shape with a thicker center and thinner at the first and second ends; the second element is the mirror image of the first element, the first end of the first element and the first end of the second element The convergence touches each other, and the second end of the first element and the second end of the second element diverge, wherein the first tulip repeats circularly around to form a ring with the convergence point pointing inward, wherein , The first color, the second color and the third color are different or the same, wherein the first print, the second print and the third print are concentric with the center of the contact lens. The colored contact lens described in item 8 of the scope of the patent application, wherein the third print has a range of colors including blue, gray, black, brown, blue, cyan, purple, blue-violet, light green, orange, and yellow The color selected from the group consisting of, hazel, and green. The colored contact lens described in item 8 of the scope of patent application further includes a fourth print of a fourth color, wherein the fourth print is a second tulip flower ring pattern having a shape including the following two elements: the first element A worm-like shape with a thicker center and thinner at the first and second ends; the second element is the mirror image of the first element, the first end of the first element and the first end of the second element Convergence touches each other, and the second end of the first element and the second end of the second element diverge, wherein the second tulip repeats circularly around to form a ring with a convergence point pointing outward, wherein , The first tulip flower ring pattern and the second tulip flower ring pattern have exactly the same outer diameter, and the second flower The golden fragrant flower ring pattern has the same inner diameter as the inner diameter of the first tulip flower ring pattern or a smaller inner diameter, wherein the first color, the second color, the third color, and the first color The four colors are different or the same, wherein the first print, the second print, the third print and the fourth print are concentric with the center of the contact lens. The colored contact lens described in the tenth item of the scope of the patent application, wherein the fourth print has a range of colors including blue, gray, black, brown, blue, cyan, purple, blue-violet, light green, orange, and yellow The color selected from the group consisting of, hazel, and green. The colored contact lens described in item 9 of the scope of patent application, wherein the inner diameter of the second tulip flower ring pattern is smaller than the inner diameter of the first tulip flower ring pattern. A method for making colored contact lenses, comprising the following steps: (a) providing a preformed contact lens; and (b) applying a first printed opaque colored dot pattern of a first color to the front surface of the contact lens And on the surface of at least one of the back surface, wherein the first printing is a circular gradient dot matrix, (c) applying a second printing opaque colored dot pattern of the second color to the contact lens On the surface, where the second printing is a circular speckle pattern, wherein the circular speckle pattern includes a plurality of circularly distributed clusters of regular or irregular shapes, wherein the regular or irregular shapes are formed by A large number of dots, wherein the circular speckle pattern has a non-smooth inner and outer boundary, wherein the second print is located inside the first print, wherein the first color and the second color are different or the same, Wherein, the first print and the second print are concentric with the center of the contact lens. A method for making colored contact lenses, including the following steps: (a) Providing a mold including a first mold half having a first molding surface and a second mold half having a second molding surface, the first molding surface defining the front surface of the contact lens, the second mold The molding surface defines the back surface of the contact lens, wherein the first mold half and the second mold half are configured to receive each other so that contact is formed between the first molding surface and the second molding surface The lens forms a cavity; (b) a second printed opaque colored dot pattern of a second color is applied to at least one of the molding surfaces of the lens mold by using pad printing or inkjet printing technology, wherein, The second printing is a circular speckle pattern, wherein the circular speckle pattern includes a plurality of circularly distributed clusters of regular or irregular shapes, wherein the regular or irregular shapes are composed of a large number of dots, Wherein, the circular speckle pattern has non-smooth inner and outer boundaries, and (c) the first printed opaque colored dot pattern of the first color is applied to the mold by using pad printing or inkjet printing technology On the surface, where the first print is a circular gradient dot matrix, where the second print is located inside the first print, where the first color and the second color are different or the same, where the The first print and the second print are concentric with the center of the contact lens.

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