CN115373155A - Decorative contact lens - Google Patents
Decorative contact lens Download PDFInfo
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- CN115373155A CN115373155A CN202110542464.5A CN202110542464A CN115373155A CN 115373155 A CN115373155 A CN 115373155A CN 202110542464 A CN202110542464 A CN 202110542464A CN 115373155 A CN115373155 A CN 115373155A
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- dot
- hollow
- decorative
- contact lens
- lens
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/047—Contact lens fitting; Contact lenses for orthokeratology; Contact lenses for specially shaped corneae
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
Abstract
The invention discloses a decorative contact lens, which comprises a lens and a decorative pattern, wherein the decorative pattern is formed on the lens, the lens comprises an optical area and a peripheral area surrounding the optical area, the area of the decorative pattern covering the optical area comprises a hollow dot block, and the hollow dot block is provided with a plurality of hollow dots with the diameter of more than 75 mu m and less than 200 mu m. The decorative pattern comprises specific hollow dot blocks, so that the design integrity of the decorative pattern is prevented from being damaged due to the fact that the visibility of the optical area is maintained, the decorativeness of the contact lens is further improved, and meanwhile, the influence on the vision of a wearer is minimized.
Description
Technical Field
The present invention relates to a contact lens, and more particularly to a decorative contact lens.
Background
Contact lenses, as a medical product for directly covering the cornea of the eye to correct vision, are widely popular in the market due to their characteristics of excellent optical properties, thinness, and beauty.
In recent years, the number of decorative contact lenses that can be used to beautify or change the appearance of the wearer's eyes has been highly discussed, and the number of such contact lens wearers is a large percentage of the contact lens wearer population in asian countries and continues to grow.
The decorative contact lens is formed by adding decorative patterns to the lens body, but in order to keep the optical visibility of the contact lens, the decorative patterns can not shield the optical zone of the lens corresponding to the pupil, thereby influencing the vision of a wearer. In the prior art, the decorative pattern design of the decorative contact lens needs to avoid or minimize the covering of the optical zone to avoid affecting the vision of the wearer, but thus, the design of the decorative pattern is limited and the decorative value is reduced. In addition, full-color decorative contact lenses have been proposed in which the decorative pattern is composed of array color dots or array color lines, but the decorative pattern still greatly affects the vision of the wearer for achieving the decorative effect.
In view of the foregoing, there is a need for a decorative contact lens that further improves the decorativeness of the contact lens while minimizing the impact on the wearer's vision, without compromising the design integrity of the decorative pattern by maintaining visibility in the optical zone.
Disclosure of Invention
The invention aims to provide a decorative contact lens. The lens of the decorative contact lens has the decorative pattern comprising the hollow dot blocks, so that the design integrity of the decorative pattern cannot be damaged due to the maintenance of the visibility of the lens, the decoration of the contact lens is further improved, and the influence on the vision of a wearer is minimized.
The decorative contact lens of the present invention comprises: the lens comprises an optical area and a peripheral area surrounding the optical area, the area of the decorative pattern covering the optical area comprises a hollow dot block, and the hollow dot block is provided with a plurality of hollow dots with the dot diameter of more than 75 mu m and less than 200 mu m.
According to the preferred embodiment of the decorative contact lens of the present invention, the hollow dots in the hollow dot block can be arranged in a regular dot matrix or an irregular dot matrix
According to a preferred embodiment of the decorative contact lens of the present invention, the regular lattice arrangement of the hollow dots in the hollow dot block is a lattice selected from a group consisting of a rectangular lattice, a rectangular lattice having an inclination angle of 45 degrees or less, and a concentric lattice, or a combination thereof.
According to a preferred embodiment of the decorative contact lens of the present invention, the dot type of the hollow dot block may be Amplitude Modulation dot (Amplitude Modulation), frequency Modulation dot (Frequency Modulation), or Hybrid dot (Hybrid Modulation), or a combination thereof.
According to the preferred embodiment of the decorative contact lens of the present invention, the dot pitch between two adjacent hollow dots in the dot block is greater than 20 pitch and less than 100 pitch.
In a preferred embodiment of the decorative contact lens according to the present invention, the coverage of the hollow dots of the hollow dot block is between 50% and 90%.
In a preferred embodiment of the decorative contact lens according to the present invention, the light transmittance of the hollow point is between 92% and 99%.
According to the preferred embodiment of the decorative contact lens of the present invention, the area of the decorative pattern covering the optical zone comprises the hollow dot block, so that the decorative pattern can have a continuous visual illusion appearance, and thus the design integrity of the decorative pattern is not damaged due to the maintenance of the visibility of the optical zone, the decoration of the contact lens is further improved, and the light transmittance and the contrast which have minimal influence on the vision of the wearer are provided.
The above summary is intended to provide a simplified summary of the disclosure in order to provide a basic understanding to the reader. This summary is not an extensive overview of the disclosure and is intended to neither identify key/critical elements of the embodiments nor delineate the scope of the embodiments. The basic spirit of the present invention and the technical means and embodiments adopted by the present invention will be easily understood by those skilled in the art after referring to the following embodiments.
Drawings
FIG. 1 is a top view of a decorative contact lens 10 having an optical zone 100a and a peripheral zone 100b and an enlarged view of a portion of a decorative pattern 110 according to one embodiment of the present invention.
Fig. 2 is a schematic diagram illustrating the position of the eyeball 21 corresponding to the optical area 100a and the peripheral area 100b of the decorative contact lens 10 according to an embodiment of the invention.
Fig. 3A-3B are schematic illustrations of a decorative pattern 110', 110 "of a decorative contact lens 10 according to another embodiment of the present invention.
Detailed Description
In order to make the description of the present disclosure more complete and complete, the following illustrative description is given of embodiments and specific examples of the present invention; it is not intended to be the only form in which a particular embodiment of the invention may be practiced or utilized. The various embodiments disclosed below may be combined with or substituted for one another where appropriate, and additional embodiments may be added to one embodiment without further recitation or description.
The advantages, features, and technical solutions of the present invention will be described in more detail with reference to exemplary embodiments and may be implemented in different forms, so that the invention should not be construed as limited to the embodiments set forth herein, but rather should be construed as providing examples that provide a more complete, and complete disclosure of the present invention as defined by the appended claims.
Unless otherwise defined, all terms (including technical and scientific terms) and terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and terms such as those defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an overly idealized or overly formal sense unless expressly so defined herein.
In addition, the term "coverage rate of hollow dots" refers to the ratio of the area of hollow dots in the hollow dot block to the total area of the hollow dot block.
The decorative contact lens of the present invention will be described below by way of illustration. First, please refer to fig. 1 and fig. 2. As shown in fig. 1, the decorative contact lens 10 of the present invention comprises a lens 100 and a decorative pattern 110 formed on the lens 100, wherein the lens 100 comprises an optical area 100a and a peripheral area 100b surrounding the optical area 100 a. As further shown in fig. 2, when the decorative contact lens 10 is worn, the optical zone 100a can correspond to the pupil 211 of the eyeball 21. In order to make the decorative pattern 110 have a continuous visual illusion appearance and provide a minimum transmittance and contrast for the visual acuity of the wearer, the area of the decorative pattern 110 covering the optical zone 100a is designed with Halftone (Halftone) images and includes hollow dot blocks 111. The hollow dot block 111 has hollow dots 112 with a plurality of dot diameters R1 and R2 and dot spacings S1 and S2.
In a preferred embodiment of the invention, the dot diameters R1 and R2 are greater than 75 μm and less than 200 μm. When the dot diameters R1 and R2 are smaller than 75 μm, the dot pattern 111 cannot provide a sufficient amount of light transmission of the optical area 100 a; larger than 200 μm prevents the decorative pattern 110 from producing a visually illusive appearance of continuity.
In a preferred embodiment of the present invention, the arrangement of the hollow dots 112 in the hollow dot block 111 can be designed as a regular dot matrix or an irregular dot matrix according to the appearance of the decorative pattern 110, wherein the regular dot matrix is one selected from a group consisting of a rectangular dot matrix, a rectangular dot matrix with an inclination angle less than or equal to 45 degrees, and a concentric dot matrix, or a combination thereof.
In the preferred embodiment of the present invention, the dot type of the hollow dot block 111 can be any amplitude modulation dot, frequency modulation dot or hybrid dot according to the design of the decorative pattern 110, i.e. the dot diameters R1 and R2 can be the same or different at the same time.
In the preferred embodiment of the present invention, the dot spacings S1 and S2 between two adjacent hollow dots 112 in the hollow dot block 111 are greater than 20 μm and less than 100 μm, and preferably greater than 35 μm and less than 75 μm. When the dot pitches S1 and S2 are smaller than 20 μm, the decorative pattern 110 is prevented from generating continuous visual illusion; greater than 100 μm reduces the visual contrast that optical zone 100a can provide. The dot type of the hollow dot block 111 can be an amplitude modulation dot, a frequency modulation dot or a hybrid dot according to the design of the decorative pattern 110, i.e. the dot spacings S1 and S2 can be the same or different.
In a preferred embodiment of the present invention, the coverage rate of the hollow dots of the hollow dot block is between 50% and 90%.
In a preferred embodiment of the present invention, the light transmittance of the hollow point is between 92% and 99%.
Next, referring to fig. 3A to 3B, the shape, color and distribution of the decorative pattern suitable for the decorative contact lens 10 according to the embodiment of the invention are not limited, and can be designed according to the predetermined decorative requirement, for example, but not limited to a two-color (color not shown) discontinuous pattern 110' as shown in fig. 3A, partially covering the optical area 100a and the peripheral area 100B, and the two-color (color not shown) discontinuous pattern 110' covering the optical area 100a has a hollow dot block 111 containing a plurality of frequency-modulated dots (hollow dots 112), wherein the hollow dots 112 have an adjustment of dot pitch according to the color depth (color not shown) of the discontinuous pattern 110' or a gradient color (color not shown) pattern 110 "as shown in fig. 3B, and the gradient color (color not shown) pattern 110" covering the optical area 100a has a hollow dot block 111 containing a plurality of dot amplitude modulation (hollow dots 112), wherein the hollow dots 112 have an adjustment of dot diameter according to the color (color not shown) of the discontinuous pattern 110 ". The decorative pattern on the contact lens according to other embodiments of the present invention may also be a combination and variation of a two-color (color not shown) discontinuous pattern 110' as shown in fig. 3A and a gradient color (color not shown) pattern 110 "as shown in fig. 3B.
The aforementioned curing procedure refers to curing (e.g., crosslinking or polymerization) by heating, light irradiation such as UV irradiation, ion irradiation (e.g., gamma ray or X-ray irradiation), microwave irradiation, or the like.
The colorant composition suitable for the decorative pattern 110 of the decorative contact lens 10 according to the present embodiment comprises at least a hydrophilic monomer, a binder resin, a colorant, an initiator, and a crosslinking agent. Suitable adhesive resins may be, for example, polyurethane resins, acrylic resins or phenolic resins. Suitable colorants can be organic or inorganic dyes. The organic dye may be, for example, but not limited to, reactive Yellow 14 (c.i. reactive Yellow 14), reactive Orange 7 (c.i. reactive Orange 7), reactive Red 23 (c.i. reactive Red 23), reactive Blue 19 (c.i. reactive Blue 19). Inorganic dyes can be, for example, but are not limited to, black iron oxide, brown iron oxide, yellow iron oxide, red iron oxide, titanium dioxide, and the like.
The method for forming the decorative pattern 110 on the lens 100 of the decorative contact lens 10 according to the embodiment of the invention can be realized by using known printing techniques, such as, but not limited to, inkjet printing (inkjet printing), laser printing (laser printing), pad printing (pad printing) or transfer printing (transfer printing).
The following examples are provided to further illustrate the invention, but the invention is not limited thereto.
Preparation example 1: preparation of silicone hydrogel compositions for forming lenses
4.44 g of isophorone diisocyanate, 0.0025 g of dibutyltin dilaurate as catalyst and 40 ml of methylene chloride were introduced into a round bottom flask and stirred under nitrogen. 20 g of α -butyl- ω - [3- (2, 2- (dimethylol) butoxy) propyl ] polydimethylsiloxane are weighed out accurately and added dropwise to a round-bottomed flask over a period of about 1 hour. After 12 hours of reaction, an additional 0.0025 g of dibutyltin dilaurate and 7.2 g of polyethylene glycol monomethacrylate were weighed out and added dropwise to the flask over a period of about 1 hour. After 12 hours of reaction, the product formed was washed with a large amount of water and then dehydrated and filtered. Next, the dichloromethane solvent was removed from the product to obtain a first polydimethylsiloxane macromers.
8.88 g of isophorone diisocyanate, 0.0025 g of dibutyltin dilaurate as catalyst and 40 ml of methylene chloride were added to a round bottom flask and stirred under nitrogen. 20 g of the silicone compound are weighed out accurately and added dropwise to a round-bottomed flask over a period of about 1 hour. After 12 hours of reaction, an additional 0.0025 g of dibutyltin dilaurate and 14.4 g of polyethylene glycol monomethacrylate were weighed out and added dropwise to the flask over a period of about 1 hour. After 12 hours of reaction, the product formed was washed with a large amount of water and then dehydrated and filtered. Then, the methylene chloride solvent was removed from the product to obtain a second polydimethylsiloxane macromers.
After mixing 39.8 grams of the first siloxane macro-block, 11.3 grams of the second siloxane macro-block, 0.5 grams of azo-bis-iso-heptonitrile (ADVN), 33.5 grams of N-vinyl pyrrolidone (NVP), 14.0 grams of 2-hydroxyethyl methacrylate (HEMA), 0.3 grams of hexafluoroisopropyl methacrylate (HFMA), 0.60 grams of 2- [3- (2H-benzotriazol-2-yl) -4-hydroxyphenyl ] ethyl 2-methacrylate in 2 grams of ethanol and stirring for about 1 hour, a silicone gel composition for forming a lens was formed.
Preparation example 2: preparation of pigment composition for forming decorative patterns
6.5 g of 2-hydroxyethyl methacrylate (HEMA), 4.5 g of N, N' -Diethylacrylamide (DMA), 2.0 g of 2-hydroxy-2-methyl-1-phenyl-1-propanone (trade name UV-1173, from BASF) and 37.6 g of a Black pigment (trade name Sicovit Black 85E172, from BASF, germany) were put into a ball mill (apparatus name RETSCH PM 400) and ground to obtain a pigment composition.
Example 1
The silicone-based hydrogel composition for lens formation formed in preparation example 1 was quantitatively dropped into a polypropylene mold, and cured at 80 ℃ for 5 hours and then at 115 ℃ for 2 hours. After the polymerization reaction is finished, soaking the model and the lens body in ethanol for 1 hour, and taking out the formed lens. And using transfer printing method to make the transfer printing rubber head be stuck on the above-mentioned colour material composition with identical pattern with decorative pattern on the printing plate, and printing said colour material composition on the external surface of mirror surface, and making photopolymerization reaction so as to obtain the decorative contact lens with decorative pattern.
The lens center of the decorative contact lens has an optical area with a diameter of 3.0mm, and the area of the decorative pattern covering the optical area of the lens comprises a hollow dot block, the distribution mode of the hollow dot block is a rectangular dot matrix, the hollow dot block has a plurality of hollow dots with a diameter of 75 μm, a dot spacing of 35 μm and a light transmittance of 98%, and the hollow dot coverage rate is 50%.
The obtained decorative contact lens was worn by an adult subject having a binocular naked eye vision of 1.0 or more, subjected to a clinical visual test, and evaluated for visual quality on the following 4 scales. The results are shown in Table 1.
Lv.1: the visual range of the subject is completely shielded
Lv.2: the visual range of the subject is shielded by a large area
Lv.3: the visual range of the subject is affected and the visual is slightly blurred, and the vision is reduced by less than 0.3 after wearing
Lv.4: the vision of the tested person after wearing reaches more than 1.0
Example 2
A decorative contact lens with a decorative pattern is prepared by the same method as that of example 1, but the lens center position of the decorative contact lens is changed to have an optical area with a diameter of 5.0mm, and the area of the decorative pattern covering the optical area of the lens comprises a hollow dot block, the hollow dot block is arranged in a rectangular lattice with an inclination angle of 45 degrees, the hollow dot has hollow dots with a dot diameter of 100 micrometers, a dot spacing of 50 micrometers and an optical transmittance of 98%, and the hollow dot coverage rate is 60%.
The resulting decorated contact lenses were tested as in example 1 and the results are shown in Table 1.
Example 3
A decorative contact lens having a decorative pattern was prepared in the same manner as in example 1, wherein the lens center of the decorative contact lens was changed to have an optical area with a diameter of 5.0mm, and the area of the decorative pattern covering the optical area of the lens included a hollow dot block, the hollow dot block was arranged in a concentric dot matrix, having a plurality of hollow dots with a dot diameter of 150 μm, a dot pitch of 50 μm and a light transmittance of 95%, and the hollow dot coverage was 80%.
The resulting decorated contact lenses were tested as in example 1 and the results are shown in Table 1.
Example 4
A decorative contact lens having a decorative pattern was prepared in the same manner as in example 1, wherein the lens center of the decorative contact lens was changed to have an optical area with a diameter of 7.0mm, and the area of the decorative pattern covering the optical area of the lens included a hollow dot block, the hollow dot block was arranged in a rectangular lattice inclined at an angle of 30 degrees, having a plurality of hollow dots with a dot diameter of 150 μm, a dot pitch of 35 μm and a light transmittance of 97%, and the hollow dot coverage was 70%.
The resulting decorated contact lenses were tested as in example 1 and the results are shown in Table 1.
Table 1: results of evaluating visual quality of decorative contact lenses of examples 1 to 4
| Example 1 | Example 2 | Example 3 | Example 4 | |
| Visual quality | Lv.3 | Lv.3 | Lv.4 | Lv.4 |
As can be seen from Table 1, the decorative contact lenses of examples 1 to 4 provide excellent visual quality to the wearer when worn, and the decorative patterns have a continuous visual illusive appearance when viewed from the environment with both eyes of the wearer, thereby providing a complete pattern design.
In summary, the decorative contact lens disclosed by the invention comprises a lens and a decorative pattern, wherein the lens comprises an optical area and a peripheral area surrounding the optical area, the area of the decorative pattern covering the optical area comprises a hollow dot block, and the hollow dot block is provided with a plurality of hollow dots with the diameter larger than 75 μm and smaller than 200 μm, so that the damage to the design integrity of the decorative pattern due to the maintenance of the visibility of the optical area is avoided, the decoration of the contact lens is further improved, and the influence on the vision of a wearer is minimized.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
[ notation ] to show
10: decorative contact lens
100: lens
100a: optical zone
100b: peripheral zone
110: decorative pattern
110': two-color discontinuous pattern
110": gradual color pattern
111: hollow dot block
112: hollow point
S1, S2: dot spacing
R1, R2: diameter of dot
21: eyeball
211: a pupil.
Claims (7)
1. A decorative contact lens, comprising:
a lens comprising an optical zone and a peripheral zone surrounding the optical zone; and
a decorative pattern formed on the lens;
the area of the decorative pattern covering the optical area comprises a hollow dot block, and the hollow dot block is provided with a plurality of hollow dots with the diameter of more than 75 microns and less than 200 microns.
2. The contact lens for decoration according to claim 1, wherein the hollow dots in the hollow dot block are arranged in a regular dot matrix or an irregular dot matrix.
3. The decorative contact lens according to claim 2, wherein the regular lattice is one selected from the group consisting of a rectangular lattice, a rectangular lattice having an inclination angle of 45 degrees or less, and a concentric lattice, or a combination thereof.
4. The contact lens for decoration according to claim 1, wherein the mesh point type of the hollow mesh point blocks is amplitude modulation mesh point, frequency modulation mesh point or hybrid mesh point.
5. The decorative contact lens according to claim 1, wherein a dot pitch between two adjacent hollow dots in the hollow dot block is greater than 20 μm and less than 100 μm.
6. The decorative contact lens of claim 1, wherein the open dot coverage of the open dot blocks is between 50% and 90%.
7. The decorative contact lens of claim 1, wherein the light transmittance of the hollowed-out points is between 92% and 99%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110542464.5A CN115373155A (en) | 2021-05-18 | 2021-05-18 | Decorative contact lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110542464.5A CN115373155A (en) | 2021-05-18 | 2021-05-18 | Decorative contact lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115373155A true CN115373155A (en) | 2022-11-22 |
Family
ID=84059769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110542464.5A Pending CN115373155A (en) | 2021-05-18 | 2021-05-18 | Decorative contact lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115373155A (en) |
-
2021
- 2021-05-18 CN CN202110542464.5A patent/CN115373155A/en active Pending
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