CN113189792A - Blue light absorption type lens with high transparency and preparation method thereof - Google Patents
Blue light absorption type lens with high transparency and preparation method thereof Download PDFInfo
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- CN113189792A CN113189792A CN202110464807.0A CN202110464807A CN113189792A CN 113189792 A CN113189792 A CN 113189792A CN 202110464807 A CN202110464807 A CN 202110464807A CN 113189792 A CN113189792 A CN 113189792A
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- 230000031700 light absorption Effects 0.000 title claims abstract description 7
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000001045 blue dye Substances 0.000 claims abstract description 20
- 239000000178 monomer Substances 0.000 claims abstract description 16
- 230000002745 absorbent Effects 0.000 claims abstract description 12
- 239000002250 absorbent Substances 0.000 claims abstract description 12
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 239000011344 liquid material Substances 0.000 claims description 29
- 238000002156 mixing Methods 0.000 claims description 18
- 239000006096 absorbing agent Substances 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000006082 mold release agent Substances 0.000 claims description 8
- 238000007872 degassing Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000001723 curing Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- LJFWQNJLLOFIJK-UHFFFAOYSA-N solvent violet 13 Chemical compound C1=CC(C)=CC=C1NC1=CC=C(O)C2=C1C(=O)C1=CC=CC=C1C2=O LJFWQNJLLOFIJK-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- 238000004383 yellowing Methods 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000009966 trimming Methods 0.000 description 6
- 238000000137 annealing Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 238000001029 thermal curing Methods 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 3
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 3
- IYAZLDLPUNDVAG-UHFFFAOYSA-N 2-(benzotriazol-2-yl)-4-(2,4,4-trimethylpentan-2-yl)phenol Chemical compound CC(C)(C)CC(C)(C)C1=CC=C(O)C(N2N=C3C=CC=CC3=N2)=C1 IYAZLDLPUNDVAG-UHFFFAOYSA-N 0.000 description 2
- 208000003464 asthenopia Diseases 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- -1 2- (3-tert-butyl-5-isobutyl-2-hydroxyphenyl) -5-chlorobenzotriazole Chemical compound 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 206010034960 Photophobia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- OCWYEMOEOGEQAN-UHFFFAOYSA-N bumetrizole Chemical compound CC(C)(C)C1=CC(C)=CC(N2N=C3C=C(Cl)C=CC3=N2)=C1O OCWYEMOEOGEQAN-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- UHOKSCJSTAHBSO-UHFFFAOYSA-N indanthrone blue Chemical compound C1=CC=C2C(=O)C3=CC=C4NC5=C6C(=O)C7=CC=CC=C7C(=O)C6=CC=C5NC4=C3C(=O)C2=C1 UHOKSCJSTAHBSO-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000007431 microscopic evaluation Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
-
- 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
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of functional lenses, and particularly relates to a blue light absorption lens with high transparency and a preparation method thereof, wherein the lens comprises a monomer, a catalyst, a blue light absorbent, a blue dye and a release agent in the components, wherein the blue light absorbent is UV-42, and the lens can still keep transparent and clear after the use amount of the UV-42 is obviously increased, so that the phenomena of darkening and yellowing of the background color are avoided, and meanwhile, the blue dye still keeps a small amount of state in the lens.
Description
Technical Field
The invention belongs to the technical field of functional lenses, and particularly relates to a blue light absorption type lens with high transparency and a preparation method thereof.
Background
The blue component of visible light easily has harmful effect on human body, the blue light has short wavelength, and the short wavelength forms an image which is difficult to identify in front of retina, so that the color is dispersed, and the eye fatigue is caused; the shorter the wavelength, the higher the energy, the more intense the visual cells in the eye are stimulated, and in addition to photophobia, eye fatigue becomes more severe.
Therefore, the blue light absorbent is added into a plurality of glasses lenses and used for absorbing and weakening the influence of blue light on eyes, some existing blue light absorbents are low in content of the glasses lenses, the blocking effect on the blue light is not ideal, the amount of the blue light absorbent is increased, the blocking effect on the blue light is improved, the bottom color of the glasses lens is easy to darken and yellow (yellow), the glasses lens can be seen through naked eyes seriously, the appearance of the glasses lens is influenced, the observed color of the glasses lens is also distorted to a certain degree, and the visual experience is influenced. In particular, when the ultraviolet absorber is used to absorb blue light, the amount of the ultraviolet absorber used is further increased than when the ultraviolet absorber is used only to absorb ultraviolet light.
Disclosure of Invention
In order to solve the technical problems, the invention provides a blue light absorption type lens with high transparency, which comprises monomers, catalysts, a blue light absorber, a blue dye, a mold release agent and the like, wherein the blue light absorber is UV-42(2- (3-tert-butyl-5-isobutyl-2-hydroxyphenyl) -5-chlorobenzotriazole) which is a powdery solid,
the addition of the blue dye is beneficial to keeping the transparency and the clarity of the lens mixture system, which is equivalent to offsetting the influence of the addition of the blue light absorbent on the darkening and the yellowing of the lens system, but the dosage of the blue dye in the lens needs to be strictly controlled, because the dosage of the blue dye is too much, the lens is discolored, and the original purpose of keeping the transparency and the clarity of the lens is also violated. This explains from another aspect, why it is not advisable to add too much blue-light absorber to the lens component in the prior art,
however, the present inventors have found that when UV-42 is used as an ultraviolet and blue light absorber, it is only necessary to combine with a very small amount of the blue dye 6, 15-dihydrodianthrapyridazine-5, 9,14, 18-tetraone (anthraquinone blue), unlike other blue light absorbers, and even if the amount of UV-42 used is significantly increased, the prepared lens remains transparent and clear, and there is no concern about the phenomenon of darkening and yellowing of the lens bottom color, which may be a certain interaction between the selected blue light absorber UV-42 and the blue dye, and even if a small amount of the blue dye is present, the blue light absorber UV-42 still can be accepted to enter the lens system without darkening and yellowing,
wherein the mass ratio of the blue dye 6, 15-dihydrodianthrapyridazine-5, 9,14, 18-tetraone relative to the monomer is 0.1-0.9%,
on the basis, the dosage mass ratio of the blue light absorber UV-42 relative to the monomer is 0.2-2%, according to the knowledge of the applicant, in the existing lens preparation, the dosage mass ratio of the blue light absorber relative to the monomer is generally controlled within 1%, but the dosage mass ratio can reach 2% in the scheme, and the excessive blue light absorber can naturally exert the effect of absorbing ultraviolet light and blue light in the lens,
the monomers comprise basic monomers for preparing 1.60 resin lenses, 1.67 resin lenses and 1.70 resin lenses, wherein the basic monomers for preparing the 1.60 resin lenses comprise 50.6 parts of MR-8A, 23.9 parts of MR-8B1 and 25.5 parts of MR-8B2 by weight, the basic monomers for preparing the 1.67 resin lenses comprise 52 parts of 1.67A and 48 parts of 1.67B by weight, the basic monomers for preparing the 1.70 resin lenses comprise 88.5 parts of 1.70A, 6.5 parts of 1.70B and 5 parts of 1.70C by weight,
the release agent is also called a mold release agent, takes phosphate as a main component,
the catalyst is the catalyst of the reaction.
The invention also provides a preparation method of the blue light absorption type lens with high transparency,
(1) mixing and stirring the mixture of MR-8A, catalyst, blue light absorbent, blue dye and mold release agent in a heating state,
wherein the temperature in the heating state is 35-45 ℃, the time of mixing and stirring in the heating state is 2-3 hours,
(2) mixing and stirring the MR-8B1 and the MR-8B2 fully,
(3) fully mixing the mixed system obtained in the step (1) and the mixed system obtained in the step (2) to obtain a mixed liquid material,
specifically, the mixed system obtained in the step (1) is cooled and then mixed with the mixed system obtained in the step (2), and the mixed liquid material is kept in a low-temperature state before being injected into a mold,
(4) filtering and degassing the mixed liquid material obtained in the step (3), injecting the mixed liquid material into a mold, heating and curing the mixed liquid material, demolding the heated and cured mixed liquid material to obtain the lens,
wherein, nitrogen is used for pressurizing to 0.1 to 0.4MPa, the mixed liquid material is injected into an assembled mould, the temperature of the mould is raised to 80 to 130 ℃, and the mould is solidified for 20 to 30 hours,
after demoulding, the lens is naturally cooled to normal temperature, and then trimming and cleaning are carried out.
Drawings
FIG. 1 is an external view of the mixed liquid obtained in example 1,
FIG. 2 is an external view of the mixed liquid obtained in comparative example 1,
FIG. 3 is an enlarged microrelief diagram of a lens obtained in comparative example 1,
FIG. 4 is an external view of the mixed liquid obtained in comparative example 2,
FIG. 5 is an external view of the mixed liquid obtained in example 2,
FIG. 6 is an external view of a mixed liquid obtained in comparative example 3,
FIG. 7 is an enlarged microstructure view of a lens obtained in comparative example 3.
Detailed Description
Example 1
(1) 50.6 parts of MR-8A, 1.5 parts of catalyst KC-1A-1 (Nippon Mitsui chemical Co., Ltd.), 2 parts of UV-42, 0.7 part of blue dye 6, 15-dihydrodianthrapyridazine-5, 9,14, 18-tetraone, and 0.7 part of mold release agent MR-INNER (Nippon Mitsui chemical Co., Ltd.) were mixed and stirred at 43 ℃ for 2.5 hours, cooled to 15 ℃ and then stirred for 10 minutes,
(2) 23.9 parts of MR-8B1 and 25.5 parts of MR-8B2 are mixed and stirred at 15 ℃ for 15 minutes according to the parts by weight,
(3) mixing the mixed system obtained in the step (1) and the mixed system obtained in the step (2) together, mixing and stirring the mixed system at 15 ℃ for 30 minutes to obtain a mixed liquid material, standing the mixed liquid material at 15 ℃ until the mixed system is stable, sampling the mixed liquid material, wherein the appearance is shown as the attached drawing 1,
(4) filtering and degassing the mixed liquid material obtained in the step (3) at 15 ℃, then pressurizing to 0.1MPa by using nitrogen, injecting the mixed liquid material into an assembled lens mold, raising the temperature of the mold to 120 ℃, carrying out thermal curing treatment for 20 hours, carrying out annealing treatment on the obtained lens at 120 ℃ for 1 hour after demolding, naturally cooling to normal temperature, trimming, cleaning and drying at low temperature.
Comparative example 1
The "UV-42" was replaced with "2- (3-tert-butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzotriazole", and the remaining components and operations were the same as in example 1:
(1) 50.6 parts of MR-8A, 1.5 parts of catalyst KC-1A-1 (Nippon Mitsui chemical Co., Ltd.), 2 parts of 2- (3-tert-butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzotriazole, 0.7 part of blue dye 6, 15-dihydrodianthrapyridazine-5, 9,14, 18-tetraone and 0.7 part of mold release agent MR-INNER (Nippon Mitsui chemical Co., Ltd.) were mixed and stirred at 43 ℃ for 2.5 hours, cooled to 15 ℃ and stirred for 10 minutes,
(2) the same as in step (2) of example 1,
(3) mixing the mixed system obtained in step (1) and the mixed system obtained in step (2) together, mixing and stirring at 15 deg.C for 30 min to obtain mixed liquid material, standing at 15 deg.C until the mixed system is stable, sampling, and making the appearance as shown in figure 2,
(4) filtering and degassing the mixed liquid material obtained in the step (3) at 15 ℃, then pressurizing to 0.1MPa by using nitrogen, injecting the mixed liquid material into an assembled lens mold, raising the temperature of the mold to 120 ℃, carrying out thermal curing treatment for 20 hours, carrying out annealing treatment on the obtained lens at 120 ℃ for 1 hour after demolding, naturally cooling to normal temperature, trimming, cleaning and drying at low temperature. The obtained lens has undissolved blue light absorber inside, and the magnified microstructure photograph is shown in FIG. 3.
Comparative example 2
The "UV-42" was replaced with "2- (2-hydroxy-5-tert-octylphenyl) benzotriazole", and the remaining components and operations were the same as in example 1:
(1) 50.6 parts of MR-8A, 1.5 parts of catalyst KC-1A-1 (Nippon Mitsui chemical Co., Ltd.), 2 parts of 2- (2-hydroxy-5-tert-octylphenyl) benzotriazole, 0.7 part of blue dye 6, 15-dihydrodianthrapyridazine-5, 9,14, 18-tetraone and 0.7 part of mold release agent MR-INNER (Nippon Mitsui chemical Co., Ltd.) were mixed and stirred at 43 ℃ for 2.5 hours, cooled to 15 ℃ and then stirred for 10 minutes,
(2) the same as in step (2) of example 1,
(3) mixing the mixed system obtained in step (1) and the mixed system obtained in step (2) together, mixing and stirring at 15 deg.C for 30 min to obtain mixed liquid material, standing at 15 deg.C until the mixed system is stable, sampling, and making the appearance as shown in figure 4,
(4) filtering and degassing the mixed liquid material obtained in the step (3) at 15 ℃, then pressurizing to 0.1MPa by using nitrogen, injecting the mixed liquid material into an assembled lens mold, raising the temperature of the mold to 120 ℃, carrying out thermal curing treatment for 20 hours, carrying out annealing treatment on the obtained lens at 120 ℃ for 1 hour after demolding, naturally cooling to normal temperature, trimming, cleaning and drying at low temperature.
From the above examples and comparative examples, when other blue-light absorber is used, when the amount is 2% by mass relative to the base monomer, the dispersion solubility of the blue-light absorber is significantly insufficient, resulting in a significant turbidity of the dispersion; the high-temperature curing is carried out to form the lens, although the high-temperature condition further promotes the dispersion and dissolution of a large part of blue light absorbent in the lens, so that the formed lens can hardly see hazy substances on the surface of the lens, the undissolved blue light absorbent is still distributed in the lens material through the observation of a microscopic display means, and the situation leads the lens to be easier to turn yellow in the wearing and using process. When the UV-42 in the embodiment 1 is adopted, the above-mentioned turbidity phenomenon does not occur under the condition of the same addition proportion, the clarification and the transparency degree of the mixed material liquid completely meet the requirements and the expectation of the process, and no obvious undissolved blue light absorbent appears when microscopic analysis and observation are carried out on the formed lens.
Example 2
(1) 52 parts of 1.67A, 1.3 parts of catalyst KC-1A-1 (Mitsui chemical Co., Ltd., Japan), 2 parts of UV-42, 0.5 part of blue dye 6, 15-dihydrodianthrapyridazine-5, 9,14, 18-tetraone, and 0.8 part of release agent MR-INNER (Mitsui chemical Co., Ltd., Japan) were mixed and stirred at 40 ℃ for 2 hours, cooled to 15 ℃ and then stirred for 30 minutes,
(2) mixing the mixed system obtained in step (1) with 48 parts by weight of 1.67B, mixing and stirring at 15 deg.C for 30 min to obtain mixed liquid material, standing at 15 deg.C until the mixed system is stable, sampling, and making into the appearance shown in figure 5,
(3) filtering and degassing the mixed liquid material obtained in the step (2) at 15 ℃, then pressurizing to 0.1MPa by using nitrogen, injecting the mixed liquid material into an assembled lens mold, raising the temperature of the mold to 80 ℃, carrying out thermal curing treatment for 24 hours, carrying out annealing treatment on the obtained lens at 80 ℃ for 1 hour after demolding, naturally cooling to normal temperature, trimming, cleaning and drying at low temperature.
Comparative example 3
The "6, 15-dihydrodianthrapyridazine-5, 9,14, 18-tetraone" was replaced with another blue dye "1-hydroxy-4- (4-methylanilino) anthracene-9, 10-dione", and the remaining components and procedures were the same as in example 1:
(1) 50 parts of 1.67A, 1.3 parts of catalyst KC-1A-1 (Nippon Mitsui chemical Co., Ltd.), 2 parts of UV-42, 0.5 part of blue dye 1-hydroxy-4- (4-methylanilino) anthracene-9, 10-dione, and 0.8 part of mold release agent MR-INNER (Nippon Mitsui chemical Co., Ltd.) were mixed and stirred at 40 ℃ for 2 hours, cooled to 15 ℃ and then stirred for 30 minutes,
(2) mixing the mixed system obtained in step (1) with 50 parts by weight of 1.67B, mixing and stirring at 15 deg.C for 30 min to obtain mixed liquid material, standing at 15 deg.C until the mixed system is stable, sampling, and making into the appearance shown in figure 6,
(3) filtering and degassing the mixed liquid material obtained in the step (2) at 15 ℃, then pressurizing to 0.1MPa by using nitrogen, injecting the mixed liquid material into an assembled lens mold, raising the temperature of the mold to 80 ℃, carrying out thermal curing treatment for 24 hours, carrying out annealing treatment on the obtained lens at 80 ℃ for 1 hour after demolding, naturally cooling to normal temperature, trimming, cleaning and drying at low temperature. The resulting lens had undissolved blue light absorber inside, and the magnified micrograph of the microstructure is shown in FIG. 7.
Claims (8)
1. A blue light absorption type lens with high transparency is characterized in that: the lens comprises a monomer, a catalyst, a blue light absorber, a blue dye and a release agent, wherein the blue light absorber is UV-42.
2. The high clarity blue light absorbing lens of claim 1, wherein: the mass ratio of the blue light absorbent to the monomer is 0.2-2%.
3. The high clarity blue light absorbing lens of claim 1, wherein: the blue dye is 6, 15-dihydrodianthrapyridazine-5, 9,14, 18-tetraone.
4. The high clarity blue light absorbing lens of claim 3, wherein: the mass ratio of the 1-hydroxy-4- (4-methylanilino) anthracene-9, 10-dione to the monomer is 0.1-0.9%.
5. The high clarity blue light absorbing lens of claim 1, wherein: the monomer comprises monomers for preparing 1.60 resin lenses, 1.67 resin lenses and 1.70 resin lenses.
6. A method for preparing the blue light absorbing lens with high transparency according to claim 5, wherein the method comprises the following steps: the preparation method comprises the following steps of,
(1) mixing and stirring the mixture of MR-8A, catalyst, blue light absorbent, blue dye and mold release agent in a heating state,
(2) mixing and stirring the MR-8B1 and the MR-8B2 fully,
(3) fully mixing the mixed system obtained in the step (1) and the mixed system obtained in the step (2) to obtain a mixed liquid material,
(4) and (4) filtering and degassing the mixed liquid material obtained in the step (3), injecting the mixed liquid material into a mold, heating and curing the mixed liquid material, and demolding to obtain the lens.
7. The method of making a blue light absorbing lens of high transparency according to claim 6 wherein: in the step (1), the temperature in the heating state is 35-45 ℃, and the mixing and stirring time in the heating state is 2-3 hours.
8. The method of making a blue light absorbing lens of high transparency according to claim 6 wherein: and (4) pressurizing to 0.1-0.4 MPa by using nitrogen, injecting the mixed liquid material into the assembled mould, raising the temperature of the mould to 80-130 ℃, and curing for 20-30 hours.
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| CN202110464807.0A CN113189792A (en) | 2021-04-28 | 2021-04-28 | Blue light absorption type lens with high transparency and preparation method thereof |
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| CN202110464807.0A CN113189792A (en) | 2021-04-28 | 2021-04-28 | Blue light absorption type lens with high transparency and preparation method thereof |
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| CN108351537A (en) * | 2015-09-15 | 2018-07-31 | 凯米格拉斯公司 | Function glasses eyeglass for block ultraviolet and blue light |
| CN110023390A (en) * | 2016-09-20 | 2019-07-16 | 依视路国际公司 | Poly carbonate resin composition with consistent color and stable blue light cutoff performance |
| CN111100410A (en) * | 2019-12-31 | 2020-05-05 | 江苏视科新材料股份有限公司 | Preparation method of blue light prevention lens |
| CN112041368A (en) * | 2018-04-30 | 2020-12-04 | 依视路国际公司 | Blue light cut-off optical material with bluish appearance |
-
2021
- 2021-04-28 CN CN202110464807.0A patent/CN113189792A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941320A (en) * | 2014-04-08 | 2014-07-23 | 丁鹏飞 | Device for selectively filtering light rays |
| CN108351537A (en) * | 2015-09-15 | 2018-07-31 | 凯米格拉斯公司 | Function glasses eyeglass for block ultraviolet and blue light |
| CN110023390A (en) * | 2016-09-20 | 2019-07-16 | 依视路国际公司 | Poly carbonate resin composition with consistent color and stable blue light cutoff performance |
| CN107479124A (en) * | 2017-08-04 | 2017-12-15 | 江苏明月光电科技有限公司 | A kind of high blue light barrier is than resin lens substrate and preparation method thereof |
| CN112041368A (en) * | 2018-04-30 | 2020-12-04 | 依视路国际公司 | Blue light cut-off optical material with bluish appearance |
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Application publication date: 20210730 |