CN112162416A - Color changing process of resin lens - Google Patents
Color changing process of resin lens Download PDFInfo
- Publication number
- CN112162416A CN112162416A CN202011022688.5A CN202011022688A CN112162416A CN 112162416 A CN112162416 A CN 112162416A CN 202011022688 A CN202011022688 A CN 202011022688A CN 112162416 A CN112162416 A CN 112162416A
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- color
- lens
- changing
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- resin 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
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/12—Optical coatings produced by application to, or surface treatment of, optical elements by surface treatment, e.g. by irradiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02C7/102—Photochromic filters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- General Health & Medical Sciences (AREA)
- Optical Filters (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Eyeglasses (AREA)
Abstract
The invention provides a color changing process of a resin lens, which comprises the following steps: a. lens pretreatment; b. preparing color-changing hardening liquid, and adding a plasticizer; c. spin coating the color-changing liquid on the surface of the lens; d, hard coating; and e, checking. And c, preparing a color changing liquid in the step b, wherein the adding amount of color changing powder of the color changing liquid is 3-8%, the content of a plasticizer is 0.1%, the content of a solvent is 20-40%, the content of an organic silicon solution is 50-70%, and the solvent is composed of one or more mixed solvents of ethanol, methanol and NMP. The invention has the beneficial effects that: the surface is added with a hard layer and is added with the color changing powder, so that the cost of the color changing lens is effectively reduced, and the production efficiency is increased.
Description
Technical Field
The invention relates to the technical field of color change, in particular to a resin lens color change process.
Background
The resin color-changing lens is popular at present, and has the excellent characteristics of light weight, impact resistance, low possibility of being broken and the like due to the unique optical performance. Because the lens discoloring effect, harmful ultraviolet light and blue light can be effectively filtered out by the lens discolored outdoors, and normal lens color can be recovered indoors, so that eyesight can be better protected. However, the current color changing process has many defects:
polymerized color change, namely, the lens introduces color change powder in the polymerization process, but the color change powder and the polymer are filtered by the PP filter element in the filtration before the raw materials are solidified in the stirring process if the dispersion or emulsification is not good. The whole lens is filled with the color changing factors, the manufactured color changing lens has poor coloring uniformity, low color changing speed under short wave wavelength, poor color changing depth, low recovery speed under indoor conditions and non-lasting color changing. This process is relatively simple, but the quality of the finished lenses is not easily controlled.
The film layer type discolors, the thin layer of the top film of the lens is a discoloring factor, the manufactured lens has good discoloring depth, high discoloring speed and good discoloring uniformity, but the process is relatively complicated, and the film layer discoloring durability is not good.
The color of the lens is changed in an infiltration mode, the depth of the lens is 0.1-0.3 mm, the color changing factor is arranged, the manufactured lens is good in color changing uniformity, good in color changing depth, fast in color changing and recovery time, good in most important color changing circulation durability, complex in manufacturing process and high in color changing cost, and the lens more than 1.60 is not suitable for membrane layer type color changing.
Disclosure of Invention
In order to solve the problems, the invention discloses a color changing process of a resin lens, which comprises the following steps:
a. lens pretreatment;
b. preparing color-changing hardening liquid, and adding a plasticizer;
c. spin coating the color-changing liquid on the surface of the lens;
d, hard coating;
and e, checking.
The invention further improves that: step a: the lens is soaked in KOH with the concentration of 5-15% for 10-30 minutes, cleaned by ultrasonic waves for 10-30 minutes and cleaned by ultrasonic waves and pure water, and then dried for later use.
The invention further improves that: the water temperature needs to be controlled between 45 ℃ and 60 ℃.
The invention further improves that: and c, preparing a color changing liquid in the step b, wherein the adding amount of color changing powder of the color changing liquid is 3-8%, the content of a plasticizer is 0.1%, the content of a solvent is 20-40%, the content of an organic silicon solution is 50-70%, and the solvent is composed of one or more mixed solvents of ethanol, methanol and NMP.
The invention further improves that: the color-changing powder of the color-changing liquid is a spiropyran and spirooxazine compound, and the dispersion particle size is 300-500 nm.
The invention further improves that: the added plasticizer is DOP, the dispersion diameter is between 100 and 200nm, and the addition amount is 0.1 percent.
The invention further improves that: after the color-changing solution is prepared, the color-changing solution needs to be uniformly mixed at 50 ℃ for 2 hours under the protection of nitrogen, and is kept at a low temperature of 5 ℃ for 24 hours, and then degassing treatment is carried out.
The invention further improves that: b, coating the color-changing solution prepared in the step b on the front surface of the lens, wherein the spin coating process is that the color-changing solution is maintained for 2 minutes at 500 revolutions per minute and then maintained for 1 minute at 2000 revolutions per minute; and finally, placing the mixture into a UV oven for curing for 25-35 seconds, and keeping the rotating speed at 2000 rpm in the process.
The invention further improves that: d, hardening is finished in an automatic hardening machine, and lens coating is finished in a vacuum coating machine; the hardened film coating layer is attached to the front and back surfaces of the lens.
The invention further improves that: and d, coating the resin lens with a film layer which is an antireflection combined film and a waterproof film.
Compared with the prior art, the invention has the following beneficial effects:
1. the surface is added with a hard layer and is added with the color-changing powder, so that the cost of the color-changing lens is effectively reduced, and the production efficiency is increased;
2. the surface is added with a hard layer and is added with the color-changing powder, so that the color is changed uniformly, the service life is long, the process is simple and the control is easy;
3. the surface hardening layer is added with a plasticizer, so that the impact resistance of the lens can be effectively improved;
4. the color-changing powder is added into the hardening layer, so that the color-changing powder is firm and durable, and can prevent the color-changing powder from being dissolved into the hardening liquid to cause pollution when the polymerization color-changing process passes through a hardening machine;
5. the process has no great limitation on lens raw materials, and the processes can be applied to achieve lens color change of 1.49, 1.56, 1.60 and 1.67.
Drawings
FIG. 1 is a schematic view of a color-changing resin lens prepared by the invention,
list of reference numerals:
wherein 1 is a front surface coating film layer, 2 is a front surface hardened layer, 3 is a lens front surface color changing layer, 4 is a resin lens, 5 is a rear surface hardened layer, and 6 is a rear surface coating film layer.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example 1
FIG. 1 shows the structure of a color-changing resin lens.
The color-changing resin lens includes a resin lens 4; a lens front surface color changing layer 3; the front and back surfaces are respectively provided with a hard layer 2 and a hard layer 5 and a front and back surface coating layer 1 and 6, the front surface discoloring layer 3 of the lens is attached to the front surface of the resin lens 4, and the front surface hard layer 2 is attached to the surface of the front surface discoloring layer 3 of the lens; the rear surface hardening layer 5 is attached to the rear surface of the resin lens 4; the front and back surface coating layers 1 and 6 are attached to the surfaces of the corresponding front and back surface hard layers 2 and 5.
The resin lens 2 comprises CR-39 Columbia resin and IPP as well as a light stabilizer, a dye and an anti-UV additive; the color changing layer 3 is formed by dissolving photochromic monomers in color changing hardening liquid by using a solvent. The front and back surface coating layers 1 and 6 are a multilayer antireflection film and a super waterproof film.
The color-changing lens is mainly realized by the following process:
1. after the cured and formed CR-39 resin lens is detected to be qualified, an ultrasonic cleaning machine is used for carrying out KOH solution, ultrasonic cleaning and ultrasonic cleaning, and then drying is carried out for later use;
2. preparation of color-changing solution 250g of an organic silicon solution was weighed out, and a spiropyran compound of James Robinson in England as a photochromic monomer was dissolved in NMP to have a dispersion particle diameter of 350nm and added to the organic silicon solution at a concentration of 5%. Adding 0.1% of plasticizer which is DOP and has a dispersion diameter of 100nm into the solution;
3. spin-coating the prepared solution on the surface of a lens by a surface spin-coating machine, and carrying out UV curing;
4. finally, the surface of the lens is hardened by an automatic hardening machine, and an antireflection film and a super waterproof film are plated on the surface of the lens by a vacuum coating machine;
5. the lenses are detected according to the national detection standard of optical resin spectacle lenses and the American resin lens FDA standard:
indoor transmittance: 89% qualified
Outdoor transmittance: 15% qualified
FDA ball drop test: qualified
Color change speed: qualified in 45 seconds
Fading speed: qualified in 358 seconds
Passed the U.S. FDA Standard
Example 2
FIG. 1 shows the structure of a color-changing resin lens.
The color-changing resin lens includes a resin lens 4; a lens front surface color changing layer 3; the front and back surfaces are respectively provided with a hard layer 2 and a hard layer 5 and a front and back surface coating layer 1 and 6, the front surface discoloring layer 3 of the lens is attached to the front surface of the resin lens 4, and the front surface hard layer 2 is attached to the surface of the front surface discoloring layer 3 of the lens; the rear surface hardening layer 5 is attached to the rear surface of the resin lens 4; the front and back surface coating layers 1 and 6 are attached to the surfaces of the corresponding front and back surface hard layers 2 and 5.
The resin monomer 2 comprises an MR series polyurethane-based monomer, an MR series polyisocyanate, a light stabilizer, a dye and an anti-UV additive; the color changing layer 3 is formed by dissolving photochromic monomers in color changing hardening liquid by using a solvent. The front and back surface coating layers 1 and 6 are a multilayer antireflection film and a super waterproof film.
The color-changing lens is mainly realized by the following process:
1. after the cured and formed MR 71.67 resin lens is detected to be qualified, an ultrasonic cleaning machine is used for KOH solution, ultrasonic cleaning and ultrasonic cleaning, and then drying is carried out for later use;
2. preparation of color-changing solution 250g of an organic silicon solution was weighed out, a spiropyran compound of James Robinson in England was used as a photochromic monomer, the dispersion particle diameter was 300m, and after dissolving in NMP, the solution was added to the organic silicon solution at a concentration of 3%. Adding 0.1% of plasticizer which is DOP and has a dispersion diameter of 200nm into the solution;
3. spin-coating the prepared solution on the surface of a lens by a surface spin-coating machine, and carrying out UV curing;
4. finally, the surface of the lens is hardened by an automatic hardening machine, and an antireflection film and a super waterproof film are plated on the surface of the lens by a vacuum coating machine;
5. the lenses are tested according to the national detection standard of optical resin spectacle lens and the FDA indoor transmittance of the resin lenses in America: 91% qualified
Outdoor transmittance: 18% qualified
FDA ball drop test: qualified
Color change speed: qualified in 48 seconds
Fading speed: 351 seconds qualified
Passed the U.S. FDA Standard
The above description is only a preferred embodiment of the present patent application, and is not intended to limit the present patent application, and any modifications, equivalents, improvements, etc. made within the spirit and scope of the present patent application should be included in the protection scope of the present patent application.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features.
Claims (10)
1. A color changing process of a resin lens is characterized in that: the method comprises the following steps:
a. lens pretreatment;
b. preparing color-changing hardening liquid, and adding a plasticizer;
c. spin coating the color-changing liquid on the surface of the lens;
d, hard coating;
and e, checking.
2. The process of claim 1, wherein the resin lens is prepared by the following steps:
step a: the lens is soaked in KOH with the concentration of 5-15% for 10-30 minutes, cleaned by ultrasonic waves for 10-30 minutes and cleaned by ultrasonic waves and pure water, and then dried for later use.
3. The process of claim 2, wherein the resin lens is prepared by the following steps: the water temperature needs to be controlled between 45 ℃ and 60 ℃.
4. The process of claim 1, wherein the resin lens is prepared by the following steps: and c, preparing a color changing liquid in the step b, wherein the adding amount of color changing powder of the color changing liquid is 3-8%, the content of a plasticizer is 0.1%, the content of a solvent is 20-40%, the content of an organic silicon solution is 50-70%, and the solvent is composed of one or more mixed solvents of ethanol, methanol and NMP.
5. The process of claim 4, wherein the resin lens is prepared by the following steps: the color-changing powder of the color-changing liquid is a spiropyran and spirooxazine compound, and the dispersion particle size is 300-500 nm.
6. The process of claim 4, wherein the resin lens is prepared by the following steps: the added plasticizer is DOP, the dispersion diameter is between 100 and 200nm, and the addition amount is 0.1 percent.
7. The process of claim 1, wherein the resin lens is prepared by the following steps: after the color-changing solution is prepared, the color-changing solution needs to be uniformly mixed at 50 ℃ for 2 hours under the protection of nitrogen, and is kept at a low temperature of 5 ℃ for 24 hours, and then degassing treatment is carried out.
8. The process of claim 1, wherein the resin lens is prepared by the following steps: b, coating the color-changing solution prepared in the step b on the front surface of the lens, wherein the spin coating process is that the color-changing solution is maintained for 2 minutes at 500 revolutions per minute and then maintained for 1 minute at 2000 revolutions per minute; and finally, placing the mixture into a UV oven for curing for 25-35 seconds, and keeping the rotating speed at 2000 rpm in the process.
9. The process of claim 1, wherein the resin lens is prepared by the following steps: d, hardening is finished in an automatic hardening machine, and lens coating is finished in a vacuum coating machine; the hardened film coating layer is attached to the front and back surfaces of the lens.
10. The process of claim 1, wherein the resin lens is prepared by the following steps: and d, coating the resin lens with a film layer which is an antireflection combined film and a waterproof film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011022688.5A CN112162416A (en) | 2020-09-25 | 2020-09-25 | Color changing process of resin lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011022688.5A CN112162416A (en) | 2020-09-25 | 2020-09-25 | Color changing process of resin lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112162416A true CN112162416A (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011022688.5A Pending CN112162416A (en) | 2020-09-25 | 2020-09-25 | Color changing process of resin lens |
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| CN (1) | CN112162416A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105892093A (en) * | 2016-05-19 | 2016-08-24 | 江苏淘镜有限公司 | Color changing process for resin lens |
| CN107082838A (en) * | 2017-05-15 | 2017-08-22 | 上海伟星光学有限公司 | The 1.499 refractive index resin eyeglasses with protection royal purple optical property |
| CN107479123A (en) * | 2017-08-04 | 2017-12-15 | 江苏明月光电科技有限公司 | A kind of anti-high energy blue light resin lens and its manufacturing process |
| CN107505728A (en) * | 2017-07-31 | 2017-12-22 | 江苏淘镜有限公司 | A kind of processing technology that specialized lens are driven for production safety |
| CN107643607A (en) * | 2017-10-09 | 2018-01-30 | 苏州骏丰光学有限公司 | A kind of 1.56 refractive index resin eyeglasses and manufacture method with protection royal purple optical property |
-
2020
- 2020-09-25 CN CN202011022688.5A patent/CN112162416A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105892093A (en) * | 2016-05-19 | 2016-08-24 | 江苏淘镜有限公司 | Color changing process for resin lens |
| CN107082838A (en) * | 2017-05-15 | 2017-08-22 | 上海伟星光学有限公司 | The 1.499 refractive index resin eyeglasses with protection royal purple optical property |
| CN107505728A (en) * | 2017-07-31 | 2017-12-22 | 江苏淘镜有限公司 | A kind of processing technology that specialized lens are driven for production safety |
| CN107479123A (en) * | 2017-08-04 | 2017-12-15 | 江苏明月光电科技有限公司 | A kind of anti-high energy blue light resin lens and its manufacturing process |
| CN107643607A (en) * | 2017-10-09 | 2018-01-30 | 苏州骏丰光学有限公司 | A kind of 1.56 refractive index resin eyeglasses and manufacture method with protection royal purple optical property |
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Application publication date: 20210101 |