TWM557366U - Color contact lens improvement - Google Patents

Abstract

In the present invention, the color contact lens mainly has an arc-shaped lens body defining an optical zone, a surrounding area surrounding the outer side, and a pattern area disposed between the optical zone and the surrounding area, and the lens body And having a convex surface and a concave surface disposed oppositely; wherein the lens body has an outer layer opposite to the convex surface, and an inner layer opposite to the concave surface, and the patterned region has a colored layer The layer is sandwiched between the outer layer and the inner layer, and the thickness of the outer layer is between 10 μm and 50 μm, which ensures that the colored layer is not exposed and does not contact the eyeball or the eyelid of the wearer, thereby greatly improving the wearing. Safety and comfort.

Description

Color contact lens improvement

This creation is about a color contact lens improvement that enhances the safety and comfort of wearing.

In recent years, the rapid development of technology products, numerous 3C products have dramatically changed the way of life in the past, smart phones, tablets, laptops, TV, the human eye always moves from this screen to another screen, and myopia gradually Become a modern human civilization disease, as the population of myopia increases, the demand for contact lenses also increases. Contact lenses have been widely used in the correction of vision, and with the advancement of contact lens manufacturing technology, contact lenses of different shapes or colors have also been designed, and new products with corneal discoloration lenses and make-up lenses with both correction and aesthetics have been born. With the development of contact lens materials, the functionality, comfort and convenience brought by contact lenses will drive the growth of the contact lens market. Contact lenses are no longer just a single use for correcting vision, but also for iris. Discoloration or enlargement of the shape of the iris makes the eyes look brighter and deeper, and is therefore favored by female consumers.

From the development of general contact lenses to corneal color-changing tablets or make-up lenses with both corrective and aesthetic effects, the process technology has evolved and changed, how to effectively grasp the functionality of correction and beauty, and to combine wearing comfort and safety, and to expand its The scope of application is the goal of the current efforts of major manufacturers. Conventional color contact lenses are produced by ink pad printing and multi-layer stacking, but ink pad printing exposes the ink layer to the surface of the lens, as shown in FIG. 1, the ink layer 11 on the surface of the lens body 10, thus When wearing or blinking, the ink layer 11 is easily peeled off due to friction of external force contact, and the ink layer 11 may make the surface of the contact lens uneven due to the proximity of the surface, and the rough and uneven surface may also cause foreign matter in the wearer's eyes. Sense, and the wearer's eyes will be in direct contact with the ink layer 11, and the eyelids will be more susceptible to fading during eye closure, potentially causing eye damage, including redness, corneal angiogenesis or allergic reactions. Etc., have doubts about wearing security.

In view of this, the present invention provides a color contact lens improvement that enhances the safety and comfort of wearing as its main purpose.

In the present invention, the color contact lens mainly has an arc-shaped lens body defining an optical zone, a surrounding area surrounding the outer side, and a pattern area disposed between the optical zone and the surrounding area, and the lens body And having a convex surface and a concave surface disposed oppositely; wherein the lens body has an outer layer opposite to the convex surface, and an inner layer opposite to the concave surface, and the patterned region has a colored layer The layer is sandwiched between the outer layer and the inner layer, and the thickness of the outer layer is between 10 μm and 50 μm, which ensures that the colored layer is not exposed and does not contact the eyeball or the eyelid of the wearer, thereby greatly improving the wearing. Safety and comfort.

According to the above technical feature, the lens system first prepares the outer layer by a spin-molding method, and then prints the colored layer on the inner side of the outer layer, and finally the inner layer is prepared by die casting.

According to the above technical features, the lens system is made of water glue, hydrophobic glue or super water glue.

According to the above technical feature, the lens body further comprises an anti-blue light absorber or an anti-UV absorber or a combination thereof.

According to the above technical features, the colored layer comprises a combination of a circular overall pattern, a texture, a dot, a graphic, a pattern or at least one geometrical pattern.

According to the above technical feature, the center thickness of the lens body is between 60 μm and 150 μm.

The colored contact lens of the present invention is sandwiched between the outer layer and the inner layer, and the thickness of the outer layer is between 10 μm and 50 μm, which ensures that the colored layer is not exposed and does not contact the eye of the wearer or Eyelid contact not only achieves the effect of not fading, but also solves the unsafe doubts such as the discoloration or discoloration of traditional colored contact lenses, and greatly enhances the safety and comfort of wearing. Furthermore, the lens body production of this creation uses the spin-molding method. As well as the die casting method, the thickness of the outer layer can be precisely controlled, and the thickness range can be controlled between 10 μm and 50 μm. In addition, the lens body further comprises an anti-blue light absorber or an anti-UV absorber or a combination thereof, so that the color contact lens of the present invention can also filter harmful short-wave blue light or ultraviolet light (UV) in addition to makeup and vision correction functions. )effect.

Unless otherwise stated, the following terms used in the specification and claims of the present application have the definitions given below. It is to be understood that the singular <RTI ID=0.0>&quot;&quot;&quot;&quot;&quot; A single item. In addition, the open-ended conjunctions such as "including" and "having" used in the claims are intended to mean that the components or components described in the claims are not excluded. It should also be noted that the term "or" generally includes "and/or" in the sense, unless the content clearly indicates otherwise. The term "about" as used in the specification and claims of this application is intended to modify any error that may vary slightly, but such minor changes do not alter the nature.

Please refer to Figure 2 for a schematic diagram of the structure of the colored contact lens in this creation. First, the color contact lens in the present invention mainly has an arc-shaped lens body 2, which defines an optical zone 201, a surrounding area 202 surrounding the outer side, and is disposed in the optical zone 201 and the surrounding zone 202. The pattern region 203 is interposed, and the lens body 2 has a convex surface 21 and a concave surface 22 opposite to each other.

The focus of the present invention is that the lens body 2 has an outer layer 23 opposite to the convex surface 21 and an inner layer 24 opposite the concave surface 22, and the pattern region 203 has at least one colored layer 25, The outer layer 23 is sandwiched between the outer layer 23 and the inner layer 24, and the outer layer 23 has a thickness L1 of between 10 μm and 50 μm.

In a preferred embodiment, the lens body 2 of the present invention is prepared by first preparing a rotating mold 31, as shown in FIG. 3, and preparing a material formula of the lens body; wherein the lens body 2 is made of water glue. Made of water gel or super water gel. In a more preferred embodiment, the lens body 2 is made of a water gel, and the material of the water gel generally has a polyacrylic acid monomer, and more specifically may comprise any conventional water gel component such as methacrylic acid B. Ester (HEMA), ethyl methacrylate (HPMA), methyl methacrylate (MMA), Glyceryl methacrylate (GMA), combinations thereof, and the like. In a most preferred embodiment, the lens body 2 is formed from a water gel of 55% high water content ethyl methacrylate (HEMA) to provide a higher hydrophilicity to the lens body 2.

The material formulation of the above lens body is injected into the rotary mold 31, and an outer layer 23 is prepared by a spin molding method. That is, a smooth film is formed by the action of centrifugal force, gravity, and surface tension when the rotary mold 31 is rotated. Among them, the thickness of the outer layer 23 can be precisely controlled by the spin-molding method, and the thickness thereof can be controlled between 10 μm and 50 μm.

Then, the colored layer 25 is printed on the inner side of the outer layer 23, as shown in Fig. 4, in a preferred embodiment, the coloring agent is prepared first and the color is used by using a pad printing method. The coloring agent is printed on the inner surface of the outer layer 23 and forms an annular pattern to prepare half of the finished product 26. Although the present specification illustrates and schematically illustrates that the colored layer 25 includes a circular overall pattern in the description of the specification, the colored layer 25 can have any structure known to those of ordinary skill in the art (eg, such as dots, textures, etc.) , a combination of graphics, graphics, or at least one geometry). In another preferred embodiment, the inner side of the outer layer 23 is printed with a plurality of colored layers of different colors to achieve a color change effect.

Finally, the inner layer is prepared by a die casting method. As shown in FIG. 5, a first mold 32 and a second mold 33 are prepared, and the semi-finished product 26 is first placed in the first mold (the mother mold in this embodiment). a first surface (in this embodiment, a concave surface) 321 is refilled into the material formulation of the lens body by a second surface 331 (in this embodiment, a convex surface that fits the first surface 321) The mold 33 (in this embodiment, a male mold) is slowly clamped with the first mold 32, and then cured by high temperature and high pressure or photoreaction (for example, UV irradiation), then demolded, and finally rehydrated to form a finished product. .

As shown in FIG. 2, the lens body 2 has a concave surface 22 and a convex surface 21 with respect to the first and second molds, and a center thickness L2 of the lens body 2 (ie, the lens body 2) The vertical distance from the center to the convex surface 21 and the concave surface 22 is between 60 μm and 150 μm; the color layer 25 of the lens body 2 is interposed between the outer layer 23 and the inner layer 24, so that the colored layer is not exposed. And does not contact the eyeball or eyelid of the wearer to achieve a colorless effect, and the color fastness is high; and the thickness L1 of the outer layer 23 (that is, the vertical distance of the colored layer 25 to the convex surface 21) is between 10 μm and 50 μm. The thickness of the outer layer 23 can be precisely controlled by the spin-molding method to ensure that the colored layer is not exposed, and the wearing safety and comfort are greatly improved; in a more preferred embodiment, the lens body further includes an anti-wearing The blue light absorbing agent or the anti-UV absorbing agent or a combination thereof can make the color contact lens of the present invention have the functions of filtering harmful short-wave blue light or ultraviolet ray (UV) in addition to makeup and vision correction functions.

In summary, the present invention provides a better and feasible color contact lens improvement, and submits a new patent application according to law; the technical content and technical features of the present invention are disclosed above, but those familiar with the technology may still be based on this The creation of the creation and the various changes and modifications that do not depart from the creative spirit of the case. Therefore, the scope of the present invention is not limited to the embodiments disclosed, but includes various alternatives and modifications that do not depart from the present invention and are covered by the following claims.

L1, L2‧‧‧ thickness
10‧‧‧ lens body
11‧‧‧Ink layer
2‧‧‧ lens body
201‧‧‧Optical zone
202‧‧‧ surrounding area
203‧‧‧ pattern area
21‧‧‧ convex surface
22‧‧‧ concave surface
23‧‧‧ outer layer
24‧‧‧ inner layer
25‧‧‧Colored layer
26‧‧‧Semi-finished products
31‧‧‧Rotary mold
32‧‧‧First mould
321‧‧‧ first surface
33‧‧‧Second mold
331‧‧‧ second surface

Figure 1 is a schematic view of the structure of a colored contact lens. Figure 2 is a schematic view showing the structure of a colored contact lens in the present creation. Figure 3 is a schematic view showing the first structure of the color contact lens manufacturing process in the present creation. Figure 4 is a schematic view showing the second structure of the color contact lens manufacturing process in the present creation. Figure 5 is a schematic view showing the third structure of the color contact lens manufacturing process in the present invention.

Claims (6)

A color contact lens improvement, which mainly has an arc-shaped lens body, the lens system defining an optical zone, a surrounding area surrounding the outer side, and a pattern area disposed between the optical zone and the surrounding zone, and The lens body has a convex surface and a concave surface disposed opposite to each other; wherein: the lens body has an outer layer opposite to the convex surface, and an inner layer opposite to the concave surface, and the pattern The zone has at least one colored layer interposed between the outer layer and the inner layer, the outer layer having a thickness of between 10 μm and 50 μm. The color contact lens according to claim 1, wherein the lens system first prepares the outer layer by a spin-molding method, and then prints the colored layer on the inner side of the outer layer, and finally the inner layer is prepared by die casting. The color contact lens improvement according to claim 2, wherein the lens system is made of water glue, hydrophobic glue or super water glue. The colored contact lens of claim 3, wherein the lens body further comprises an anti-blue light absorber or an anti-UV absorber or a combination thereof. A color contact lens improvement according to any one of claims 1 to 4, wherein the colored layer comprises a combination of a circular overall pattern, a texture, a dot, a graphic, a pattern or at least one geometrical pattern. The color contact lens improvement according to any one of claims 1 to 4, wherein the lens body has a center thickness of between 60 μm and 150 μm.