A plasma wind discharge defogging lens and a manufacturing method thereof

Abstract

The invention discloses a plasma wind discharge defogging lens, wherein a carbon nanotube grid net woven with graphene material is embedded in the resin substrate during the production of the resin substrate, the carbon nanotube grid net is placed in the resin substrate, the middle part of the carbon nanotube grid net is fixed to bend outward and bulge, and after polishing, a symmetrical carbon nanotube discharge brush is formed on the surface of the resin substrate. At the same time, a method for producing the plasma wind discharge defogging lens is also provided, when voltage is applied to both ends of the carbon nanotube discharge brush, electrostatic discharge is generated, and plasma wind is formed to be transmitted in space, collide with and neutralize micron-level fog droplets floating on the surface of the lens, and fog is expelled, water vapor is prevented from being adsorbed on the surface of the lens, and an anti-fogging effect is achieved; the disadvantages of the traditional electric heating anti-fogging method, such as long reaction time, insufficient anti-fogging time, power consumption, and inconvenience in carrying a power supply, are overcome; and the disadvantages of the chemical anti-fogging method, such as insufficient surface hardness, softening of the film layer when exposed to water, and short service life, are also avoided.

Description

Technical Field

[0001] The invention relates to the field of anti-fog glasses, in particular to a plasma wind discharge defogging lens and a manufacturing method thereof. Background Art

[0002] Traditional anti-fog glasses are generally divided into two categories. One is the chemical anti-fog method, which is to dip-coat a layer of hydrophilic anti-fog coating on the surface of the resin lens, and then dry and solidify it to make anti-fog lenses. This type of anti-fog glasses has the disadvantages of insufficient surface hardness, the film layer softens when exposed to water, and a short service life; the other is the traditional electric heating method, which is to coat a layer of ICO conductive film on the surface of the lens or place a conductive metal wire on the inner side of the lens to pass an electric current and then heat the lens to increase the surface temperature of the lens to prevent fogging. This anti-fog method has the disadvantages of long reaction time, untimely anti-fog, power consumption, and inconvenience of carrying a power supply, and has not been widely adopted.

[0003] For example, a Chinese patent with publication number CN111413809A discloses an anti-fog photochromic lens and a preparation method thereof, comprising a photochromic lens, wherein the front and rear surfaces of the photochromic lens are both bonded with anti-fogging films, the outer edge of the anti-fogging film is wrapped with a heating wire, and the heating wires at the edges of the two anti-fogging films are connected in series through a second wire; a fixing clip is also arranged above the photochromic lens, a box body is installed at one end of the fixing clip, a battery, a temperature sensor and a thermostat are installed inside the box body, and the battery, the temperature sensor, the thermostat and the heating wire are connected in series through a first wire. The present invention is applicable to the photochromic lens, and the anti-fogging film is bonded to the front and rear surfaces of the photochromic lens, and the anti-fogging film can be directly torn off, so that the anti-fogging film can be removed in an environment with a small temperature difference between indoor and outdoor, and the anti-fogging film can be attached in an environment with a large temperature difference between indoor and outdoor, so that the photochromic lens can be equipped with and unequipped with the anti-fogging film according to the needs of the user. This technology places a conductive metal wire on the inner side of the lens and passes an electric current through it to heat the lens and increase the surface temperature of the lens to prevent fogging. This anti-fog method has the disadvantages of long reaction time, insufficient anti-fog time, high power consumption, and inconvenience in carrying a power supply.

[0004] Another example is a Chinese patent with publication number CN108279448A that discloses a manufacturing process for coated anti-fog lenses. The front and rear surfaces of a resin lens substrate are automatically hardened by a hardening machine, and a first layer of primer hardening liquid and a second layer of anti-fog hardening liquid are dipped and solidified and cooled under a constant temperature environment. The second layer of anti-fog hardening liquid is preferably made of a super-hydrophilic and oleophobic material, which can not only effectively utilize the raw materials but also maximize cost savings. The use of fully automated hardening technology can effectively improve production efficiency, reduce scrap rate, and increase yield rate. There are not many restrictions on the raw materials of resin lenses, and this process can be applied to all types of lenses. It can effectively and durably prevent fogging and is scratch-resistant. It does not require a special lens cloth to wipe, which is convenient and comfortable. The anti-fog material is a super-hydrophilic and oleophobic material with a surface hardness of 4 to 8 hours. There is no need to wipe the anti-fog cloth or spray an external anti-fog agent, which is safe and environmentally friendly, can maintain a long-term anti-fog function, and is comfortable and convenient to wear. However, anti-fog lenses are made by coating a layer of hydrophilic anti-fog coating on the surface of the resin lens and drying and curing it. However, this type of anti-fog glasses has the disadvantages of insufficient surface hardness, softening of the film layer when exposed to water, and a short service life.

[0005] Based on the above-mentioned shortcomings of the prior art in actual operation, the problem to be solved by the present invention is:

[0006] 1. The traditional electric heating anti-fog method has the disadvantages of long reaction time, insufficient anti-fog time, power consumption, and inconvenience in carrying power supply;

[0007] 2. Chemical anti-fog has the disadvantages of insufficient surface hardness, softening of the film layer when exposed to water, and short service life;

[0008] 3. How to design a lens that can repel fog and prevent water vapor from being adsorbed on the lens surface to achieve an anti-fog effect. Summary of the invention

[0009] In view of the deficiencies in the prior art, the present invention provides a plasma wind discharge mist-removing lens to solve the above problems.

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions.

[0011] A plasma wind discharge defogging lens comprises a resin substrate, a carbon nanotube discharge brush, a silicon dioxide hard film layer and an anti-reflection film layer, wherein the carbon nanotube discharge brush is arranged in the middle of the resin substrate; the silicon dioxide hard film layer is attached to the top of the resin substrate; and the anti-reflection film layer is attached to the surface of the silicon dioxide hard film layer.

[0012] Preferably, the resin substrate is made of resin lenses with different refractive indices, a carbon nanotube grid mesh woven from a plurality of carbon fiber nanotubes is provided in the middle of the resin substrate, the carbon nanotube discharge brush is made of the carbon nanotube grid mesh after grinding, and the two ends are symmetrical, the middle part is fixed on the resin substrate and bends outward, the line spacing of the carbon nanotube grid mesh on the carbon nanotube discharge brush is 0.5-1.0mm, the middle of the carbon nanotube grid mesh bends outward to form a circle with a diameter of 10mm, and the protrusion height is 1-2mm.

[0013] Preferably, the thickness of the silicon dioxide hard film layer on the surface of the resin substrate is 1-2 um, and the thickness of the anti-reflection film layer is 50-200 nm.

[0014] A method for manufacturing a plasma wind discharge mist-removing lens is also provided, the first step being: preparing a mixed monomer for manufacturing a resin substrate;

[0015] Step 2: Making a carbon nanotube grid;

[0016] Step 3: Place the carbon nanotube grid into the resin substrate mold and inject it;

[0017] Step 4: Curing and forming the resin substrate;

[0018] Step 5: Stabilization of the resin substrate;

[0019] Step 6: hardening the surface of the resin substrate;

[0020] Step 7: Grinding the discharge end of the carbon nanotube discharge brush;

[0021] Step 8: Evaporate the anti-reflection film layer, finally tear off the protective film, conduct finished product inspection, and put it into storage management.

[0022] Preferably, the first step is: preparing a mixed monomer for making a resin substrate, selecting lens monomers and sending them into a special preparation tank, weighing the initiator IPP, ultraviolet absorber and plasticizer according to the weight ratio and adding them into the special preparation tank, stirring and mixing, degassing to separate the liquid and bubbles, vacuuming and purifying, and then cold storing at a low temperature of -10°C for standby use, the amount of the initiator IPP is 2.0%, the amount of the ultraviolet absorber is 0.04%, and the amount of the plasticizer is 0.01%.

[0023] Preferably, the second step: making a carbon nanotube grid mesh, using a weaving machine to weave several carbon nanotubes with a diameter of 0.02-0.05mm into a rectangular carbon nanotube grid mesh with a length of 50mm and a width of 20mm according to the required size, with a line spacing of 0.5-1.0mm, and the carbon nanotube grid mesh is bent outward in the middle and a mold is used to shape and press out a raised circle with a diameter of 10mm, and the raised height is 1-2mm.

[0024] Preferably, the third step is: placing the carbon nanotube grid into the resin substrate mold for infusion, placing the shaped carbon nanotube grid into the middle position of the glass mold for casting the resin substrate, and then pressurizing the cold-stored and standby monomer with electric nitrogen and pouring it into the clear and clean glass mold, sealing the liquid injection port with tape after filling with the monomer, and then transferring to the next curing and forming process.

[0025] Preferably, the fourth step: the resin substrate is cured and formed, the mold filled with the monomer is pre-set for a certain period of time and then sent to the curing equipment for heating, first heated to 48°C, maintained for 2 hours, then raised to 90°C at a uniform speed, and accelerated to 60°C, and the monomer is cured and formed into a resin substrate after 21 hours;

[0026] The fifth step: stabilizing the resin substrate, annealing the lens after demoulding to reduce dimers or trimers and eliminate internal stress, thereby improving the stability of the lens and the imaging quality of the lens. The treatment method is to heat the lens to 110° C. and keep it for 2 hours. The resin substrate with built-in carbon nanotube discharge brushes is obtained through the above first step to the fifth step;

[0027] The sixth step: the surface of the resin substrate is hardened, first the hardening liquid is added into the stainless steel dipping tank, and then the cured resin substrate is hung on the dipping rack with 40 hanging cards in a group, and transferred to the hardening liquid dipping tank. The rack falls at a uniform speed to make the lens enter the dipping tank and dip into the silicon dioxide hardening liquid. The falling speed is 2-3mm per second, the dipping residence time in the tank is 5-10S, the rising and pulling speed is 2-3mm per second, and the pulling time is 30S. After the lens is pulled out of the dipping tank, it is transferred to a far-infrared oven for drying and curing. The drying and curing temperature is 80-100°C, and the drying and curing time is 30-60min, so that a silicon dioxide hard film layer is formed on the surface of the resin substrate.

[0028] Preferably, the seventh step: grind out a carbon nanotube discharge brush, wherein the middle part of the carbon nanotube discharge brush is polished into a circular transparent pupil observation area that is not connected to each other, and the carbon nanotube mesh wires on both sides form a pair of circular tip discharge electrodes that are symmetrical and electrically insulated from each other to form a carbon nanotube discharge brush. The specific process method is as follows: fix the resin substrate on a special ball mill for resin lenses, grind the circular raised part of the carbon nanotube grid in the middle of the lens, grind off the carbon nanotube wires connected at the top, and form a circular tip discharge electrode with a diameter of 10 mm and symmetrical carbon nanotube tips on both sides to complete the production of the carbon nanotube discharge brush.

[0029] Preferably, the eighth step: evaporating an anti-reflection film layer, first attach a protective film with a diameter of 10 mm to the circular raised part in the middle of the carbon nanotube discharge brush on the front side of the resin substrate, then place the resin substrate on the rotating coating bracket of the vacuum evaporation machine, rotate the coating bracket to enter the evaporation chamber of the vacuum coating machine, close the sealed door of the vacuum evaporation chamber of the coating machine and tighten the locking handle; turn on the vacuum pump to evacuate the vacuum evaporation chamber, maintain the vacuum degree in the vacuum evaporation chamber to 2×10-7Pa, and maintain the temperature in the vacuum evaporation chamber at 60°C; turn on the arc switch to make the zirconium oxide target material in the combustion chamber in the crucible stored under the evaporation machine instantly evaporate at high temperature in the spark of the high-voltage arc to form a zirconium metal ion cloud, and the rotating coating bracket in the vacuum evaporation chamber with the lens continuously rotates and settles on the surface of the silicon dioxide and hard film layer of the resin lens, and evaporates an anti-reflection film layer with a deposition thickness of 30-100nm on the surface of the resin lens. After the evaporation is completed, take out the resin substrate and tear off the protective film in the middle.

[0030] Compared with the prior art, the beneficial effect of the device of the present invention is that: a plasma wind discharge defogging lens comprises a resin substrate, a carbon nanotube discharge brush, a silicon dioxide hard film layer, and an anti-reflection film layer. When the resin substrate is manufactured, a carbon nanotube grid mesh woven with graphene material is embedded in the resin substrate. The carbon nanotube grid mesh is placed in the resin substrate, and the middle part is fixed to bend outward and convex. After polishing, a symmetrical carbon nanotube discharge brush is formed on the surface of the resin substrate. At the same time, a method for manufacturing a plasma wind discharge defogging lens is also provided.

[0031] ① When voltage is applied to both ends of the carbon nanotube discharge brush, static discharge is generated, forming plasma wind that is transmitted in space, colliding with the micron-sized fog droplets floating on the lens surface and neutralizing them, expelling fog and preventing water vapor from being adsorbed on the lens surface, thus playing an anti-fog role;

[0032] ② It overcomes the shortcomings of traditional electric heating anti-fogging, such as long reaction time, insufficient anti-fogging time, power consumption, and inconvenience in carrying power supply;

[0033] ③At the same time, it also avoids the weaknesses of chemical anti-fog methods, such as insufficient surface hardness, the film layer becoming soft when exposed to water, and a short service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic structural diagram of the front side of a plasma wind discharge defogging lens of the present invention;

[0035] Figure 2 This is a schematic structural diagram of the side surface of a plasma wind discharge mist-removing lens of the present invention;

[0036] Figure 3 This is a production process flow chart of a plasma wind discharge mist-removing lens manufacturing method of the present invention;

[0037] Figure 4 The present invention is a schematic diagram of the working principle of a plasma wind discharge defogging lens. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] A plasma wind discharge defogging lens comprises a resin substrate 1, a carbon nanotube discharge brush 2, a silicon dioxide hard film layer 3, and an anti-reflection film layer 4. The carbon nanotube discharge brush 2 is arranged in the middle of the resin substrate 1; the silicon dioxide hard film layer 3 is attached to the top of the resin substrate 1; and the anti-reflection film layer 4 is attached to the surface of the silicon dioxide hard film layer 3.

[0040] The resin substrate 1 is made of resin lens monomers with different refractive indices such as 1.499, 1.56, 1.60, 1.67, 1.71, 1.74, and 1.76, through a process of mixing, vacuum stirring, pouring into a glass mold, heating and curing, and substrate aging. The chemical composition of the monomer material of the resin substrate 1 can be allyl diglycol carbonate, dipropylene isophthalate, and amino resin is a different monomer material. The resin substrate 1 is made of resin plastic of any of the above materials. Before the resin substrate 1 monomer is poured, a carbon nanotube grid mesh woven from a plurality of carbon fiber nanotubes is pre-placed in the middle of the glass mold. The carbon nanotube grid mesh is subsequently polished and processed to form a carbon nanotube discharge brush 2, which serves as a discharge circuit channel for the plasma current to pass through.

[0041] The carbon nanotube discharge brush 2 is made of a plurality of carbon fiber nanotubes with a diameter of 0.02-0.05 mm, woven into a rectangular grid with a length of 50-60 mm and a width of 20 mm. The grid line interval is 0.5-1.0 mm. The middle of the grid is bent outward and pressed by a mold to form a raised circle with a diameter of 10 mm and a raised height of 1-2 mm.

[0042] The silica hard film layer 3 refers to a hard film layer made by using silica hardening liquid to dip-coat a layer of hardening liquid with a thickness of 1-2um on the surface of the resin substrate 1, and drying and curing it, such as XT-113, CH-01-8H, TC2000, FC200 hardening liquid for domestic CR39 lenses, and TS-56-T resin lens hardening liquid imported from Japan. The dip-coating thickness of the hardening liquid on the surface of the resin substrate 1 is 1-2um. Resin substrates 1 with different refractive indices and materials must be used in conjunction with the corresponding types of hardening liquids.

[0043] The anti-reflection film layer 4 is made of a metal ion cloud formed by arc evaporation of a zirconium oxide target in a vacuum evaporator and deposited on the surface of the resin substrate 1, with a thickness of 50-200nm. After adding the anti-reflection film layer 4, the light transmittance of the lens can be increased by 3-5%, so that the total visible light transmittance of the lens reaches more than 95%.

[0044] A method for manufacturing a plasma wind discharge mist-removing lens is as follows:

[0045] 1) Mixed monomers for making resin substrate 1: Put the selected lens monomers into a special preparation tank at room temperature, weigh the initiator IPP (diisopropyl peroxydicarbonate), ultraviolet absorber (UVG) and plasticizer (DOP) by weight, add them into the special preparation tank, stir and mix at a certain temperature and pressure, degas, separate the liquid from the bubbles, purify by vacuum, and then store at low temperature (-10℃) for standby use. The amount of IPP is 2.0%, the amount of ultraviolet absorber is 0.04%, and the amount of plasticizer is 0.01%;

[0046] Among them, IPP (diisopropyl peroxydicarbonate): used as a low-temperature initiator for the polymerization or copolymerization of olefin monomers. It must be diluted and coexisted with solvents such as xylene and stored at low temperatures below -10°C. The production method of diisopropyl peroxydicarbonate is mainly to react isopropyl chloroformate with sodium peroxide, that is, sodium hydroxide solution is added to an enameled glass reaction pot, hydrogen peroxide is added dropwise to obtain a sodium peroxide solution, and then this solution is slowly dripped into isopropyl chloroformate, stirred until the reaction is completed, and finally washed in layers and refrigerated at -4°C. When transporting diisopropyl peroxydicarbonate, it needs to be reported to the railway bureau for trial transportation, and the trial period is two years. When storing, it is stored in a cool, ventilated place, and diluted with xylene and stored in a -10°C refrigerator.

[0047] Ultraviolet absorber (UVG): ① can strongly absorb ultraviolet rays (especially wavelengths of 290-400nm); ② good thermal stability, will not change due to heat even during processing, and low thermal volatility; ③ good chemical stability, no adverse reaction with material components in the product; ④ good miscibility, can be evenly dispersed in the material, no frost, no seepage; ⑤ the absorber itself has good photochemical stability, no decomposition, no discoloration; ⑥ colorless, non-toxic, odorless; ⑦ resistant to immersion; ⑧ cheap, easy to obtain; ⑨ insoluble, or difficult to dissolve in water. Plasticizer (DOP): DOP is a general plasticizer, mainly used in the processing of polyvinyl chloride, can also be used in the processing of chemical resins, acetate resins, ABS resins and rubber and other polymers, can also be used in the production of paints, dyes, dispersants, etc. DOP plasticized PVC can be used to make artificial leather, agricultural films, packaging materials, cables, etc. Organic solvents and gas chromatography stationary liquids are the most widely used plasticizers in industry. This product has good compatibility with most synthetic resins and rubbers used in industry, except cellulose acetate and polyvinyl acetate. This product has good comprehensive performance, good mixing performance, high plasticizing efficiency, low volatility, good low-temperature flexibility, water extraction resistance, high electrical properties, and good heat resistance and weather resistance.

[0048] 2) Making a carbon nanotube grid: Use a weaving machine to weave several carbon nanotubes with a diameter of 0.02-0.05mm into a rectangular carbon nanotube grid with a length of 50mm and a width of 20mm according to the required size. The line spacing is 0.5-1.0mm. The middle of the carbon nanotube grid is bent outward and a mold is used to shape a raised circle with a diameter of 10mm and a raised height of 1-2mm.

[0049] 3) Place the carbon nanotube grid into the mold with the resin substrate 1 for infusion: Place the shaped carbon nanotube grid into the middle position of the glass mold for casting the resin substrate 1, then pressurize the cold-stored and standby monomer with electric nitrogen and pour it into the clean glass mold. After filling with the monomer, seal the liquid injection port with tape and then proceed to the next curing and forming process.

[0050] 4) Curing and forming of the resin substrate 1: After pre-setting the mold filled with the monomer for a certain period of time (pre-gel), it is sent to the curing equipment for heating, first heated to 48°C, maintained for 2 hours, then raised to 90°C at an average speed, and accelerated to 60°C. After 21 hours, the monomer is cured and formed into the resin substrate 1;

[0051] 5) Stabilization treatment of the resin substrate 1: After demolding, the lens is annealed to reduce dimers or trimers and eliminate internal stress, thereby improving the stability of the lens and the imaging quality of the lens. The treatment method is: heating the lens to about 110°C and maintaining it for 2 hours. The resin substrate 1 with a built-in carbon nanotube discharge brush 2 is obtained through the above procedures.

[0052] 6) The surface of the resin substrate 1 is hardened: first, the hardening liquid is added into the stainless steel dipping tank, and then the cured resin substrate 1 is hung on the dipping rack with 40 hanging cards in a group, and transferred to the hardening liquid dipping tank. The rack falls at a uniform speed to make the lens enter the dipping tank and dip into the silica hardening liquid. The falling speed is 2-3mm per second, the immersion residence time in the tank is 5-10S, the rising and pulling speed is 2-3mm per second, and the pulling time is 30S. After the lens is pulled out of the dipping tank, it is transferred to a far-infrared oven for drying and curing. The drying and curing temperature is 80-100°C, and the drying and curing time is 30-60min, so that a silica hard film layer 3 is formed on the surface of the resin substrate 1.

[0053] 7) Grind out the carbon nanotube discharge brush 2: refer to Figure 1 , the left side is before polishing, the carbon nanotube grid is connected as a whole, and the right side is the carbon nano discharge brush 2 formed after polishing. It can be seen from the figure that the middle part is polished into a circular transparent pupil observation area that is not connected to each other, and the carbon nanotube mesh wires on both sides form a pair of circular tip discharge electrodes that are symmetrical and electrically insulated from each other to form a carbon nanotube discharge brush 2. The specific process method is as follows: fix the resin substrate 1 on a special ball mill for resin lenses, grind the circular raised part of the carbon nanotube grid in the middle of the lens, grind off the carbon nanotube wires connected at the top, and form a circular tip discharge electrode with a diameter of 10mm and symmetrical carbon nanotube tips on both sides to complete the production of the carbon nanotube discharge brush 2.

[0054] 8) Evaporation of anti-reflection film layer 4: first, attach a protective film with a diameter of 10 mm to the middle circular protrusion of the carbon nanotube discharge brush 2 on the front side of the resin substrate 1, then place the resin substrate 1 on the rotating coating support of the vacuum evaporation machine, rotate the coating support to enter the evaporation chamber of the vacuum coating machine, close the sealed door of the vacuum evaporation chamber of the coating machine and tighten the lock handle; turn on the vacuum pump, evacuate the vacuum evaporation chamber, maintain the vacuum degree in the vacuum evaporation chamber to 2×10-7Pa, and maintain the temperature in the vacuum evaporation chamber at 60°C; turn on the arc switch, so that the zirconium oxide target material in the combustion chamber in the crucible under the evaporation machine is instantly evaporated at high temperature in the spark of the high-voltage arc to form a zirconium metal ion cloud, and the rotating coating support in the vacuum evaporation chamber with the lens is continuously rotated and settled on the surface of the silicon dioxide hard film layer 3 of the resin lens, and an anti-reflection film layer 4 with a deposition thickness of 30-100nm is evaporated on the surface of the resin lens 1. After the evaporation is completed, the resin substrate 1 is taken out and the protective film in the middle is torn off.

[0055] See attached Figure 3The production process of the present invention includes: the first step of preparing a mixed monomer for making a resin substrate 1; the second step of making a carbon fiber nanotube grid; the third step of placing the carbon nanotube grid into a mold with the resin substrate 1 for infusion; the fourth step of curing the resin substrate 1; the fifth step of stabilizing the resin substrate 1; the sixth step of hardening the surface of the resin substrate 1; the seventh step of grinding out the discharge end of the carbon nanotube discharge brush 2; the eighth step of evaporating an anti-reflection film layer 4; finally, the protective film is torn off, and the finished product is inspected and put into storage for management.

[0056] Reference Figure 4 The use method and discharge defogging effect of the plasma wind discharge defogging lens of the present invention are described as follows: the two electrodes of the electrostatic output end of the plasma generating circuit module are respectively connected to the left and right ends of the carbon nanotube discharge brush 2, the working power of the plasma generating circuit module is turned on, and the oscillating output high-voltage electrostatic field is applied to the two ends of the carbon nanotube discharge brush 2 to generate convective plasma wind. Under the action of the plasma wind, the micron-sized water droplets that disperse the fog are neutralized, and the adhesion conditions of the fog adhering to the surface of the lens are destroyed, so as to achieve the purpose of preventing fog at the pupil viewing position in the middle of the lens and maintaining a clear field of vision.

[0057] It is particularly important to explain that in the present invention, a carbon nanotube grid wire mesh having conductive properties is embedded in the resin substrate 1. Since the carbon nanotubes are very thin in diameter, only 0.02-0.05 mm, and there is a gap of 0.5-1.0 mm between the tubes, the tubes are so thin that they are almost invisible to the naked eye without careful observation. Therefore, after wearing, the light transmittance of the lens outside the pupil of the eye will not be blocked, and the normal visual observation clarity will not be affected. The lens has substantially the same optical properties and vision correction effect as conventional lenses.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plasma wind discharge defogging lens, characterized in that: The invention comprises a resin substrate (1), a carbon nanotube discharge brush (2), a silicon dioxide hard film layer (3), and an anti-reflection film layer (4); the carbon nanotube discharge brush (2) is arranged in the middle of the resin substrate (1); the silicon dioxide hard film layer (3) is attached to the top of the resin substrate (1); the anti-reflection film layer (4) is attached to the surface of the silicon dioxide hard film layer (3); the resin substrate (1) is made of resin lenses with different refractive indices; a carbon nanotube grid formed by weaving a plurality of carbon fiber nanotubes is arranged in the middle of the resin substrate (1); the carbon nanotube grid is formed by weaving a plurality of carbon fiber nanotubes; The carbon nanotube discharge brush (2) is made of a carbon nanotube grid net through grinding, and the two ends are symmetrical, and the middle part is fixed on the resin substrate (1) and bends outwards and bulges, the carbon nanotube grid net line spacing on the carbon nanotube discharge brush (2) is 0.5-1.0mm, the middle of the carbon nanotube grid net bends outwards and bulges into a circle with a diameter of 10mm, and the bulge height is 1-2mm, the silicon dioxide hard film layer (3) is set on the surface of the resin substrate (1) with a thickness of 1-2um, and the anti-reflection film layer (4) has a thickness of 50-200nm.

2. A method for manufacturing a plasma wind discharge defogging lens, used to manufacture the plasma wind discharge defogging lens as claimed in claim 1, characterized in that: The first step is to prepare a mixed monomer for making a resin substrate (1); Step 2: Making a carbon nanotube grid; Step 3: Place the carbon nanotube grid into a mold with the resin substrate (1) and inject it; Step 4: Curing the resin substrate (1) into shape; Step 5: Stabilizing the resin substrate (1); Step 6: hardening the surface of the resin substrate (1); Step 7: grinding the discharge end of the carbon nanotube discharge brush (2); Step 8: Evaporate the anti-reflection film layer (4), finally remove the protective film, conduct finished product inspection, and store for management.

3. The method for manufacturing the plasma wind discharge defogging lens according to claim 2, characterized in that: The first step is to prepare a mixed monomer for making a resin substrate (1), select lens monomers and send them into a special preparation tank, weigh initiator IPP, ultraviolet absorber and plasticizer according to weight ratio and add them into the special preparation tank, stir and mix, degas, separate the liquid and bubbles, purify by vacuum, and then store at a low temperature of -10°C for use, the amount of initiator IPP is 2.0%, the amount of ultraviolet absorber is 0.04%, and the amount of plasticizer is 0.01%.

4. The method for manufacturing a plasma wind discharge mist-removing lens according to claim 2, characterized in that: The second step is to make a carbon nanotube grid. Several carbon nanotubes with a diameter of 0.02-0.05mm are woven into a rectangular carbon nanotube grid with a length of 50mm and a width of 20mm using a weaving machine according to the required size. The line spacing is 0.5-1.0mm. The middle of the carbon nanotube grid is bent outward and a raised circle with a diameter of 10mm is pressed out using a mold. The raised circle has a height of 1-2mm.

5. The method for manufacturing a plasma wind discharge mist-removing lens according to claim 2, characterized in that: The third step is: placing the carbon nanotube grid into the mold with the resin substrate (1) for infusion, placing the shaped carbon nanotube grid into the middle position of the glass mold for casting the resin substrate (1), and then pressurizing the cold-stored standby monomer with electric nitrogen and pouring it into the clean glass mold, sealing the injection port with tape after filling the monomer, and then transferring to the next curing and forming process.

6. The method for manufacturing a plasma wind discharge mist-removing lens according to claim 2, characterized in that: The fourth step: the resin substrate (1) is cured and formed. The mold filled with the monomer is placed in a curing device for a certain period of time and then heated. The temperature is firstly increased to 48°C and maintained for 2 hours. The temperature is then increased to 90°C at a uniform rate and then decreased to 60°C at an accelerated rate. After 21 hours, the monomer is cured and formed into the resin substrate (1). The fifth step: stabilization treatment of the resin substrate (1): after the lens is demoulded, annealing treatment is performed to reduce dimers or trimers and eliminate internal stress, thereby improving the stability of the lens and the imaging quality of the lens. The treatment method is to heat the lens to 110° C. and keep it for 2 hours. The resin substrate (1) with a built-in carbon nanotube discharge brush (2) is obtained through the above first to fifth steps; The sixth step: the surface of the resin substrate (1) is hardened by first adding a hardening liquid into a stainless steel dip coating tank, and then the cured resin substrate (1) is hung on a dip coating rack with 40 hanging clips in a group, and transferred to the hardening liquid dip coating tank. The rack is dropped at a uniform speed so that the lens enters the dip coating tank and is dipped in the silicon dioxide hardening liquid. The falling speed is 2-3 mm per second, the dipping residence time in the tank is 5-10 seconds, the lifting speed is 2-3 mm per second, and the pulling time is 30 seconds. After the lens is pulled out of the dip coating tank, it is transferred to a far-infrared oven for drying and curing. The drying and curing temperature is 80-100° C. and the drying and curing time is 30-60 minutes, so that a silicon dioxide hardening film layer (3) is formed on the surface of the resin substrate (1).

7. The method for manufacturing a plasma wind discharge mist-removing lens according to claim 2, characterized in that: The seventh step is to grind out a carbon nanotube discharge brush (2), wherein the middle part of the carbon nanotube discharge brush (2) is ground into a circular transparent pupil observation area that is not connected to each other, and the carbon nanotube mesh wires on both sides form a pair of circular tip discharge electrodes that are symmetrical and electrically insulated from each other, thereby manufacturing the carbon nanotube discharge brush (2). The specific process method is as follows: fix the resin substrate (1) on a ball mill dedicated to resin lenses, grind the circular raised part of the carbon nanotube grid in the middle of the lens, grind off the carbon nanotube wires connected at the top, and form a circular tip discharge electrode with a diameter of 10 mm and symmetrical carbon nanotube tips on both sides, thereby completing the manufacture of the carbon nanotube discharge brush (2).

8. The method for manufacturing a plasma wind discharge mist-removing lens according to claim 2, characterized in that: The eighth step: evaporating the anti-reflection film layer (4), first, attaching a protective film with a diameter of 10 mm to the circular raised portion in the middle of the carbon nanotube discharge brush (2) on the front side of the resin substrate (1), then placing the resin substrate (1) on the rotating coating support of the vacuum coating machine, rotating the coating support into the coating chamber of the vacuum coating machine, closing the sealed door of the vacuum coating chamber of the coating machine and tightening the lock handle; turning on the vacuum pump to evacuate the vacuum coating chamber, and maintaining the vacuum degree in the vacuum coating chamber at 2×10 -7 Pa, while maintaining the temperature in the vacuum evaporation chamber at 60°C; turning on the arc switch, so that the zirconium oxide target material stored in the combustion chamber of the crucible under the evaporation machine is instantly evaporated at high temperature in the spark of the high-voltage arc to form a zirconium metal ion cloud, which is deposited on the surface of the silicon dioxide hard film layer (3) of the resin lens during the continuous rotation of the rotating coating bracket with the lens in the vacuum evaporation chamber, and an anti-reflection film layer (4) with a deposition thickness of 30-100nm is evaporated on the surface of the resin lens (3). After the evaporation is completed, the resin substrate (1) is taken out and the protective film in the middle is torn off.

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