CN108663738B - Method for developing color by optical combination of polymer and oxide in optical communication and biological identification system - Google Patents
Method for developing color by optical combination of polymer and oxide in optical communication and biological identification system Download PDFInfo
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- CN108663738B CN108663738B CN201810501694.5A CN201810501694A CN108663738B CN 108663738 B CN108663738 B CN 108663738B CN 201810501694 A CN201810501694 A CN 201810501694A CN 108663738 B CN108663738 B CN 108663738B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 59
- 238000004891 communication Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 31
- 229920000642 polymer Polymers 0.000 title claims description 22
- 238000000576 coating method Methods 0.000 claims abstract description 30
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- 239000000049 pigment Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000002834 transmittance Methods 0.000 claims description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 229920001225 polyester resin Polymers 0.000 claims description 6
- 239000004645 polyester resin Substances 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 5
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- -1 alcohol ethers Chemical class 0.000 claims description 4
- 150000001298 alcohols Chemical class 0.000 claims description 4
- 150000002170 ethers Chemical class 0.000 claims description 4
- 150000002576 ketones Chemical group 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000003085 diluting agent Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 2
- 239000002105 nanoparticle Substances 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 238000004040 coloring Methods 0.000 claims 6
- 239000010410 layer Substances 0.000 claims 2
- 239000011247 coating layer Substances 0.000 claims 1
- 239000003086 colorant Substances 0.000 abstract description 11
- 239000002861 polymer material Substances 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 8
- 238000007709 nanocrystallization Methods 0.000 abstract description 3
- 229920002521 macromolecule Polymers 0.000 abstract description 2
- 238000007639 printing Methods 0.000 description 5
- 239000010408 film Substances 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 4
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920001558 organosilicon polymer Polymers 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 230000016776 visual perception Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
- C09D11/104—Polyesters
Abstract
The invention provides a method for developing color by optical combination of macromolecules and oxides in an optical communication and biological identification system, which is characterized by comprising the following steps: after the surface of the optical communication and biological identification system is coated with the nano pigment, the oxide multi-layer film is coated on the nano pigment. The invention adopts the design of polymer material nanocrystallization and matching with optical coating, can be applied to the surface cover plate material of optical communication and infrared band biological identification systems, and can meet the requirement of various colors required by biological identification surface cover plates.
Description
Technical Field
The invention relates to the field of photoelectric communication, in particular to a method for developing color by optically combining a polymer and an oxide in an optical communication and biological identification system.
Background
Ink (polymer material) is a material that is applied to the surface of an object to be coated and forms a continuous thin film having excellent adhesion. The surface of the coated object has decorative functional color, luster, pattern …, etc. The surfaces of different materials are coated with printing ink, so that colorful and colorful appearances can be obtained, and the printing ink has the functions of beautifying the vividness and good visual perception of human beings and contributes to the life of human substances and spiritual life.
However, in the optical communication and biometric identification system, since the light source used in the optical communication and biometric identification system is in the infrared band (usually 850nm, 940nm, 1050nm), the analysis and algorithm requires that the spectrum of the infrared band pass through, and it is desirable to cut off the passage of other visible light (visible light at 400 to 750 nm).
In summary, the above optical characteristics can be applied to the cover plate of the infrared band in the market at present, and the color of the cover plate can only be black, and just because of the limitation of the physical meaning and the optical characteristics, other colors such as common colors (white, blue, gold, …, etc.) of the mobile phone need to be prepared, and the preparation only by passing through a high polymer material and a special light absorption material cannot be realized, because the optical characteristics of low transmittance of visible light and high transmittance of infrared light are satisfied, only black can exist in nature; other colors are contrary to physical and optical meanings, and cannot be realized by only passing through polymers and added materials, which also causes that the optical communication and infrared band biological identification system cannot be quickly realized and applied to 3C and mobile phone products.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks and providing a color development scheme that can be applied to optical communication and biometric identification systems.
The invention provides a method for developing color by optical combination of macromolecules and oxides in an optical communication and biological identification system, which is characterized by comprising the following steps: after the surface of the optical communication and biological identification system is coated with the nano pigment, the oxide multi-layer film is coated on the nano pigment.
The above-mentioned oxide may be any inorganic metal oxide, and such metal oxides are classified into compounds of high refractive index and low refractive index, such as: the compound having a high refractive index is titanium oxide, and the oxide having a low refractive index is silicon oxide.
Furthermore, the method for developing color by optically combining the polymer and the oxide in the optical communication and biological identification system also has the following characteristics: namely, the nano pigment is selected from materials with the particle diameter of 130-300 nanometers.
Furthermore, the method for developing color by optically combining the polymer and the oxide in the optical communication and biological identification system also has the following characteristics: namely, the coating thickness of the above-mentioned nanopigment is not more than 10 um. Preferably 4-6 um.
Furthermore, the method for developing color by optically combining the polymer and the oxide in the optical communication and biological identification system also has the following characteristics: namely, the preparation method of the nano pigment is as follows:
optical-grade polyester resin, nano titanium dioxide, a solvent, a dispersant and a non-silicon auxiliary agent are uniformly mixed and then subjected to nano grinding;
wherein the mass percentage of each component is as follows:
furthermore, the method for developing color by optically combining the polymer and the oxide in the optical communication and biological identification system also has the following characteristics: that is, the solvent is selected from ketones, ethers, alcohols, alcohol ethers or a mixture thereof.
Furthermore, the method for developing color by optically combining the polymer and the oxide in the optical communication and biological identification system also has the following characteristics: that is, the auxiliary is selected from a non-silicon defoaming agent, a non-silicon oil repellent agent, or a mixture thereof.
Furthermore, the method for developing color by optically combining the polymer and the oxide in the optical communication and biological identification system also has the following characteristics: that is, in the process of coating the nano pigment, the thinner is mixed with the nano pigment and then the coating is performed;
the diluent is selected from ketones, ethers, alcohols, alcohol ethers or mixtures thereof;
the dosage of the thinner is 5-25% of the total mass of the nano pigment.
Furthermore, the method for developing color by optically combining the polymer and the oxide in the optical communication and biological identification system also has the following characteristics: that is, the multilayer coating of the oxide is realized by a vacuum optical coating method.
Furthermore, the method for developing color by optically combining the polymer and the oxide in the optical communication and biological identification system also has the following characteristics: that is, the number of the oxide plating layers is 2 or more. The oxide coating is generally a coating in which a high refractive index and a low refractive index are alternated. The number of plating layers is preferably 30 or more.
Furthermore, the method for developing color by optically combining the polymer and the oxide in the optical communication and biological identification system also has the following characteristics: that is, the product obtained by the above method has a transmittance of < 1% in visible light and a transmittance of > 80% in an infrared wavelength band having a wavelength of 940 ± 20 nm.
The visible light region generally refers to light having a wavelength length within the range of 400-750 nm;
the above-mentioned infrared light band generally refers to light having a wavelength within the range of 850 + -20 nm, 940 + -20 nm, 1050 + -20 nm.
The invention has the following functions and effects:
with the economic development of people who advance social science and technology, the printing ink is not only used for decoration and beautification effects, in the invention, the adopted printing ink belongs to a high polymer material, the main components are polyester resin and non-silicon or silicon additives, special materials with certain optical wave bands capable of absorbing or transmitting light are added and mixed in the process, then the nano-research and development treatment is carried out, a solvent is prepared to be uniformly dispersed on the surface of a base material, after the processing, the solvent is volatilized to form a layer of uniform and continuous high polymer material with the thickness of about 4-6um, all the pigments are in a semi-transparent or semi-transparent state generally at a nano level, but the color of the pigments can not be changed, when the coating of an oxide is added, the effects of preventing visible light from passing through, enhancing surface reflection and not influencing the infrared light penetration are realized.
Therefore, the invention adopts the design of polymer material nanocrystallization and matching with optical coating, can be applied to the surface cover plate material of the optical communication and infrared band biological identification system, and can solve the requirement of various colors of the biological identification surface cover plate.
Drawings
FIG. 1 shows a spectrum diagram of a black cover plate, high transmittance of infrared light band and visible light cut-off;
FIG. 2 is an SEM image of the thickness of the printed ink after completion of step one in the example (product cross-section taken by SEM);
FIG. 3 is a graph of the ink nanosized particle size distribution after the first step of the example;
FIG. 4 is a graph showing the transmittance of the process in each step of the example.
Detailed Description
The only thing that can be realized in the industry at present is black, and none of the other colors can be realized, and white is the color in which all colors are the most difficult to realize and the theory of physical and optical characteristics conflicts, so this embodiment exemplifies the white cover plate for optical communication and infrared band biometric identification that cannot be realized in the industry at present.
The optical communication and infrared band biological identification receiver does not expose or be seen by consumers at a glance on the appearance design of a product I D, and a protective cover plate is added outside the product appearance design to protect the receiver from being damaged by external force collision and to ensure that the appearance color is integral.
Regarding the material of the protective cover, transparent glass or plastic is usually used as the cover material in the industry, the color of the coating ink needs to have high stability so that the receiver can not be seen by the consumer, and at the same time, the coating ink needs to have high transmittance at the infrared wavelength range so as to capture the signal for analysis and imaging in optical communication and biological identification.
Generally, the operating wavelength bands of the infrared light are 850nm, 940nm and 1050nm (940 nm is taken as an example in the embodiment), for the analysis and imaging requirements, the transmittance of the infrared light at the wavelength band of 940 ± 20nm needs to be greater than 80%, so that the signal capture and the algorithm imaging are stable, and the cut-off transmittance at the visible light (400 to 750nm is called visible light) needs to be less than 1% to avoid the influence of the stray light interference on the sensitivity.
The reason why the requirements of optical communication and biological identification require that the cut-off transmittance is less than 1% at the visible light position and the transmittance of infrared light is more than 80%, and the requirements of optical specification show black (as shown in fig. 1) in terms of physical and optical characteristics, is currently realized in the industry, is because the natural color matching the physical and optical characteristics, but if the requirements of black are to be skipped, other colors such as white, blue … and the like are in conflict with the physical and optical characteristics, and cannot be realized in the industry at present.
In the present embodiment, the following invention explains how to combine the optical and physical characteristics of ink (polymer material) and multi-layer coating (oxide material) to solve the theoretical conflict, realize other colors than black, and enable the optical communication and biological identification receiver to capture the optical signal with the function of calculation and imaging design.
The specific process method comprises the following steps:
the first step, ink nanocrystallization:
step 1-1, uniformly mixing optical-grade polyester resin 45%, nano titanium dioxide 15%, solvent (80% of isophorone, 20% of ethylene glycol monobutyl ether), dispersant 5% and non-silicon auxiliary agent 5% (polyacrylate defoamer and non-organic silicon polymer oil-resistant agent), and then carrying out nano grinding, and finally controlling the particle size of the mixture to be 130-300 nm;
the formula of the nano pigment can also be as follows: 55% of optical-grade polyester resin, 10% of nano titanium dioxide, 20% of solvent, 10% of dispersing agent and 5% of non-silicon auxiliary agent;
the formula of the nano pigment can also be as follows: 35% of optical-grade polyester resin, 20% of nano titanium dioxide, 34% of solvent, 1% of dispersing agent and 10% of non-silicon auxiliary agent;
in addition, the formula can be adjusted according to different pigments.
Step 1-2, coating the nano pigment by controlling the solid content and adding 10-15% by mass of diluent isophorone, as shown in fig. 2, the printing thickness is controlled to be 5 +/-1 um, the polymer nano particles after coating and volatilizing the organic solvent are uniformly dispersed and stacked as shown in fig. 3, the transparent infrared light high transmittance is obtained from the macroscopic view, the privacy is not provided, and the rear images and characters can be clearly seen (as shown in fig. 4, the transmittance measured value after the first step of ink nano treatment).
In order to realize different colors, the color required by the cover plate needs to be reflected by the ink (polymer material) body, and the translucent ink has high transmittance, and the requirements of different colors are generally realized by adjusting the degree of nano-sizing the ink particle size and the process thickness.
The second step, oxide multilayer coating:
after the first step, a multi-layer film design is carried out by oxide (for example, the multi-layer film design is carried out by alternately stacking H-L-H-L2L denotes low refractive index SiO2The number of layers can be adjusted and controlled according to the use requirement, such as: designed as HL ^20 ^ 40, HL ^25 ^ 50, HL ^33 ^ 66 and the like), the optical design has low transmittance (T ^ 33) in visible light<1%, 400-; has high transmittance (T) in infrared light band>80％，940±20nm)。
Measurement and comparison of products:
as shown in fig. 4, the optical characteristics of the above 2 steps are low transmittance (T < 1%, 400-750nm) at visible light, and high transmittance (T > 80%, 940 ± 20nm) at infrared wavelength band, in terms of the measurement results of single coating, single coating and transmittance measurement values after the combination process; the physical property ink appears white after being reflected by the coating film.
Therefore, the present embodiment uses the horizontal point of physical and optical properties of the nano-ink (polymer material) and the multi-layer coating (oxide material) to solve the problem that the white ink in the industry cannot be realized in the infrared band.
Claims (7)
1. The method for developing color by optical combination of polymer and oxide in optical communication and biological identification system is characterized by comprising the following steps: coating nano pigment on the surface of an optical communication and biological identification system, uniformly dispersing and stacking the polymer nano particles after coating and volatilizing an organic solvent, and forming a semitransparent infrared light high-transmittance layer without privacy on the appearance, so that a back image and characters can be clearly seen, and then coating a multilayer oxide film on the semitransparent infrared light high-transmittance layer;
the nano pigment is selected from materials with the particle size of 130-300 nanometers;
the coating thickness of the nano pigment is not more than 10 um;
the method for multilayer coating of the oxide comprises the following steps: the multilayer coating is performed in such a manner that high refractive index oxides and low refractive index oxides are alternately stacked.
2. The method according to claim 1, wherein the coloring is performed by optically combining a polymer and an oxide in the optical communication and biometric identification system, wherein:
the preparation method of the nano pigment is as follows:
optical-grade polyester resin, nano titanium dioxide, a solvent, a dispersant and a non-silicon auxiliary agent are uniformly mixed and then subjected to nano grinding;
wherein the mass percentage of each component is as follows:
3. the method as claimed in claim 2, wherein the coloring is performed by optically combining a polymer and an oxide in the optical communication and biometric identification system, wherein:
the solvent is selected from ketones, ethers, alcohols, alcohol ethers or mixtures thereof.
4. The method as claimed in claim 2, wherein the coloring is performed by optically combining a polymer and an oxide in the optical communication and biometric identification system, wherein:
the auxiliary agent is selected from a non-silicon defoaming agent, a non-silicon oil-resistant agent or a mixture thereof.
5. The method according to claim 1, wherein the coloring is performed by optically combining a polymer and an oxide in the optical communication and biometric identification system, wherein:
in the process of coating the nano pigment, the thinner is mixed with the nano pigment for coating;
the diluent is selected from ketones, ethers, alcohols, alcohol ethers or mixtures thereof.
6. The method according to claim 1, wherein the coloring is performed by optically combining a polymer and an oxide in the optical communication and biometric identification system, wherein:
the multilayer coating of the oxide is realized by adopting a vacuum optical coating mode.
7. The method according to claim 1, wherein the coloring is performed by optically combining a polymer and an oxide in the optical communication and biometric identification system, wherein:
the number of the coating layers of the oxide is more than 2.
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| CN103102735A (en) * | 2013-02-22 | 2013-05-15 | 捷卡（厦门）产品标识系统有限公司 | High transmittance infrared ink |
| CN204066067U (en) * | 2014-06-19 | 2014-12-31 | 南昌欧菲光学技术有限公司 | Infrared composite transparent sheet and there is the touch-screen of described infrared composite transparent sheet |
| CN104387842A (en) * | 2014-11-24 | 2015-03-04 | 精工油墨(四会)有限公司 | Infrared ray ink with high adhesive power and high transmittance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1702127A (en) * | 2005-07-01 | 2005-11-30 | 上海印钞厂 | Optical color variable pigment with near-infrared transmission feature and preparation process thereof |
| CN203164461U (en) * | 2013-02-19 | 2013-08-28 | 东莞五方光电科技有限公司 | Infrared narrow-band bandpass optical filter |
| KR101636940B1 (en) * | 2015-04-15 | 2016-07-06 | 부산대학교 산학협력단 | Polymeric Bragg reflection tunable wavelength filters and its Manufacturing method |
| CN204855847U (en) * | 2015-04-28 | 2015-12-09 | 苏州奥科辉光电科技有限公司 | A 1490 nanometer bandpass filters for optical communication |
| CN105419585B (en) * | 2015-12-29 | 2018-11-02 | 深圳市千浪化工有限公司 | The bulk polymerization nano material of bio-identification |
| JP6895443B2 (en) * | 2016-01-21 | 2021-06-30 | スリーエム イノベイティブ プロパティズ カンパニー | Optical camouflage filter |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102735A (en) * | 2013-02-22 | 2013-05-15 | 捷卡（厦门）产品标识系统有限公司 | High transmittance infrared ink |
| CN204066067U (en) * | 2014-06-19 | 2014-12-31 | 南昌欧菲光学技术有限公司 | Infrared composite transparent sheet and there is the touch-screen of described infrared composite transparent sheet |
| CN104387842A (en) * | 2014-11-24 | 2015-03-04 | 精工油墨(四会)有限公司 | Infrared ray ink with high adhesive power and high transmittance |
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