WO2000067051A1

WO2000067051A1 - Plastic lens and its processing method

Info

Publication number: WO2000067051A1
Application number: PCT/JP2000/002792
Authority: WO
Inventors: Minoru Ono
Original assignee: Asahi Lite Optical Co., Ltd.
Priority date: 1999-04-28
Filing date: 2000-04-27
Publication date: 2000-11-09

Abstract

A method for evenly coating the surface of a plastic lens base with various coating liquids from a closed state, a novel coating layer formed by the method, and a lens having a coated surface. The object-side surface, the eye-side surface, and a part or all of the side surface of a plastic lens are coated by means of an ink-jet device with one or more of a plastic lens material liquid, a primer coating liquid, a hard-coating liquid, a dyeing liquid, coloring coating liquid, and other coating liquids to form films or to impregnate the plastic lens with them. By using, for example, the application of the coating liquids as dotlike droplets, colored hard-coating liquids are applied by multicoating or applied in areas closely adjacent to each other to form a hard-coating layer of a color tone produced by combining the tones of the colored hard-coating liquids. Alternatively, a photoreactive material is immobilized between the hard-coating layers at high density.

Description

Description Plastic lens and its processing method

The present invention relates to a processing method for providing a plastic coating with a primer coating layer, a hard coating layer, a colored layer, and the like, and a lens obtained by the method. Background art

Plastic lenses are lightweight and easy to dye, so they are fashionable and widely used. In recent years, the refractive index of plastics has also improved, and even those with a refractive index exceeding 1.7 are commercially available. As a resin, a thermosetting resin is mainly used, and a high-refractive-index resin is often used. Plastic lenses for spectacles have high light transmittance and are preferred to be transparent, but reflection occurs at the interface between the lens and air, and the transmittance decreases by about 8%. For this reason, it is common practice to deposit a metal thin film in multiple layers to prevent reflection.

However, the surface of plastic lenses is soft and easily damaged. In addition, since the shrinkage ratio due to temperature change with the metal thin film is different, the metal thin film is peeled off and cannot be put to practical use. Therefore, a hard coating layer is formed on the surface of the lens substrate. However, there is a problem with adhesion, and in order to solve this problem, an adhesive film is used as a primer coating layer on the lens surface. In addition, a hard coating layer is formed on the upper side. However, these are major factors that complicate the process and increase manufacturing costs. In particular, the thermosetting resin for the lens is completely hardened by the heat polymerization reaction. In this state, the adhesion strength of each coating layer is weak, and the layers may peel. The primer coating layer is also used to efficiently absorb impact energy and protect the lens from destruction. For these purposes, it is required to have adhesion and sufficient heat resistance.

By the way, the thickness of the brim coating layer is on average about dry and the thickness of the hard coating layer is l to 2 m when dry. For these coatings, a dipping method and a spin coating method are widely used as coating methods utilizing the viscosity and surface tension of a coating solution. Each of these layers cannot be applied continuously at a time, and it is extremely complicated to first apply primer coating, heat and dry to the touch, then hard coat and heat dry again. Coating must be done.

The dive method is a widely used method, but it is a notch system.It is mounted on a support and once submerged in liquid, then pulled up at a constant speed to form a film on the lens surface. Method. Therefore, since the primer coating liquid and the hard coating liquid are stored in the liquid tank, the surface of the liquid is constantly exposed to air, and it is necessary to eliminate dust and strictly control the viscosity and solid content ratio. Is a heavy burden. In addition, in the case of a lens-like shape composed of a curved surface, even if the lens is pulled vertically from the liquid surface, the lens surface does not always become perpendicular to the liquid surface. Therefore, there is a problem that the film thickness is not constant. Therefore, the desired result cannot be obtained even if a plurality of layers are stacked to exert a special effect such as antireflection.

The problem to be solved by the present invention is to provide a method in which various coating liquids formed on the outer surface of a lens substrate are kept in a closed state and uniformly applied, and a novel coating layer or surface using this method is formed. It is to provide a lens having. Disclosure of the invention

In the present invention, one or more of various coating solutions such as a material solution for a plastic lens, a primer coating solution, a hard coating solution, a dyeing solution, a coloring coating solution, etc. are used for the plastic lens objective surface, A part or all of the eye surface and side surfaces are applied using an injection device to form a film or to be impregnated to form a coating layer or a coating surface.

The ink jet device may be either a thermal system or a piezo system. Discharge control may be either a continuous method or an on-demand method.However, it is more efficient to apply the composition only to the necessary places. Is preferred. The hard coating solution contains inorganic fine particles, and the particle size of the fine particles is in the range of l to 200 mz (millimicron), and particularly preferably 2 to 50. If the particle size is smaller than 1 m /, the surface hardness of the coating may decrease, and if it is larger than 200 111, the transparency of the coating may decrease. Since such inorganic fine particles are contained, the selection of the nozzle diameter of the ink jet is limited. In addition, since it is said that the thickness of the primer coating layer and the hard coating layer of the plastic lens is preferably in the range of 0.5 to 2 μm when dried, the ink jet is discharged. The size of the droplet is closely related to the application density of the droplet.

As one embodiment of the present invention, a hard coating liquid having a different refractive index is applied to each layer to form a film, and a plurality of hard coating layers are provided. Since the refractive index of the primer coating layer is lower than the refractive index of the lens substrate, a hard coating layer having a higher refractive index than the primer is applied on the hard coating layer thereon, and a hard coating layer having a lower refractive index is further applied thereon. To provide a The coating is performed so that the refractive index of the coating layer is alternately high and low. In the ink jet method, since the size of the droplet is almost constant, the film thickness can be made constant, and these application steps can be assembled in a series. The hard coating layer having such a configuration has an anti-reflection function and can achieve a light transmittance of about 95%. When such an anti-reflection film is formed by the divving method, the thickness of each film is not constant, so that the optical path length of the reflected light between the layers is different, and as a result, the anti-reflection effect cannot be obtained. . In addition, a plastic lens having a plurality of hard coating layers formed thereon has an effect of reducing interference fringes that are remarkably visually recognized in a lens using a resin whose refractive index of the lens substrate is 1.6 or more.

In another embodiment, one or more colored hard coating liquids are applied alone or in an overlapping manner to form hard coating layers of various colors. That is, a hard coating solution is mixed with a dye or pigment, and a plurality of hard coating solutions, preferably black, cyan, magenta, and yellow, are prepared, and an ink jet device is used. A colored lens having a freely colored hard coating layer can be obtained by applying these layers one on top of the other or by applying them adjacently.

In still another embodiment, a photoreactive substance is applied to a part or the whole of the lens between the lens surface and the layer formed by the coating solution and / or between the layers formed by the coating solution. Fix it. Examples of the photoreactive substance include a photochromic substance and an ultraviolet absorber. In the former example, a spiro-ring-containing compound, fine-grained silver halide, and the like are used. Examples include droxybenzo'triazole and salicylic acid-based fine powder. Usually, these substances are used by being dispersed in a resin binder and forming a layer by coating with a coating means, or kneading the base material.

In the present invention, a solvent in which these fine particles are dispersed is applied to a predetermined location. When drying, a strong film is not formed, and primer coating and hard coating are performed only on the adhered state, and these fine particles are fixed between layers. In particular, silver halide, which is a high-performance mouth-mixing inorganic fine particle, is difficult to chemically bond or disperse in a resin binder at high density, but is stable when dispersed in a solvent such as ink. In this state, it is possible to discharge by ink jet, and a strong film cannot be formed, but silver halide fine particles can be fixed at a high density. The fine particles are fixed between the hard coating layer, the primer coating layer, the surface of the lens substrate and the like to protect the fine particles. According to the ink jet apparatus, the fine particles in the form of ink can be applied only to a predetermined location, and the application density can be freely controlled. Therefore, the boundary between the portion to be applied and the portion not to be applied can be freely blurred. When used for eyeglasses, if the entire lens is photochromic processed, when the vehicle is running, the front of the eye will be dark for the first moment when the tunnel enters, but photomixing processing will be applied to the upper part of the lens. There is no problem if only processing is performed, and even if it suddenly becomes dark, the view will not be lost. Blurring the boundary between the unprocessed part and the one that is excellent in design is also possible.

As another embodiment for obtaining other design effects, a portion having a different color tone is formed on at least a part of the peripheral portion of the plastic lens. Here, the peripheral portion of the lens means the peripheral portion of the objective surface or the eye surface and the side surface of the lens.

Frameless spectacles are particularly popular as lightweight spectacles, but a colored part is formed around the periphery of the lens as a means to impart design to the lens. For example, a three- or four-color injection device is used to apply three primary color coating liquids, or apply a slightly shifted color liquid droplet to obtain a synthesized color tone. In this way, it is possible to enhance the design by making it look as if it has a frame or by giving it a pattern. In the case of a dyeing solution, it cannot be colored into a bulky shape, but it is impregnated and colored (dyed). An elegant design that gives accents to W can be given.

In still another embodiment, one or more of various coating liquids such as a plastic lens material liquid, a primer coating liquid, a hard coating liquid, and a photochromic coating liquid are applied to the surface of the plastic lens. A part of or the entire surface is coated using an ink jet device to form fine irregularities, thereby reducing reflected light from the lens. That is, inorganic fine particles (for example, silica and titania) having a particle diameter of 80 to 200 nm are mixed in advance with various coating liquids, and these inorganic fine particles are dispersed on the lens surface to form fine uneven surfaces. I do. It is known to form a heterogeneous layer by densely arranging inorganic fine particles.However, inorganic fine particles are well dispersed in an inorganic binder solution, but have a density as expected in an organic binder. Does not disperse. Therefore, when inorganic fine particles having a particle size of 80 to 200 nm are coated by the diving method, coating cannot be performed in a state where the fine particles are densely arranged, and a complete heterogeneous layer can be obtained. Absent.

The present invention is an effective means for improving this. As an example, as the inorganic fine particles contained in the hard coating solution, the particle size is 20 nm and 16

Prepare two types of O nm, first apply 2 O nm to make the first layer, then apply 160 nm several times to adjust the amount of inorganic fine particles, and dry Occasionally, a fine irregular surface is formed in which the inorganic fine particles are fixed about half in one layer. This fine uneven surface reduces the reflected light as an inhomogeneous layer. In this example, a two-layer structure has been described, but the present invention is not limited to this, and only the second layer may be formed in consideration of the adhesion to the underlying layer.

As another method, a coating liquid having a nonvolatile content of 10 to 15% is applied using an ink jet having a nozzle diameter of about 20 m; Form fine projections with a size of about 1 to 0.2 μm. Repeated application by moving the transfer device on the lens side by a small amount Thus, an antireflection function can be imparted by forming a surface in which such fine projections are in close contact with each other and forming an inhomogeneous layer.

As still another embodiment of the present invention, the above-mentioned various coating liquids are applied at least twice using an ink jet apparatus, and these properties are synthesized by closely arranging droplets having different properties. Thus, a coated layer can be formed. Also, since the ink droplets are applied in the form of dots, they are applied so as to fill the gaps between the droplets, form a continuous surface, and are leveled to provide a smooth primer coating layer. Form a coating layer. In general, when a liquid containing a pigment is applied and fixed, a coating film with high surface accuracy can be obtained by diluting with a solvent and applying the coating multiple times. The coating method such as rubbing is restricted by the viscosity of the coating liquid and the density of the solid content in order to obtain a predetermined film thickness. However, in the present invention, such a restriction is not applied. The range of choices is large, and hard coating solutions with different refractive indices or different physical properties can be applied in a uniform thickness. Also, as described above, when hard-coating droplets having different colors are applied in close contact, these colors are combined to form a hard-coating layer of another color.

Furthermore, in the case of the ink jet device, since the coating can be applied to a predetermined area of an arbitrary portion at an arbitrary film thickness on both the objective surface and the opposing surface of the lens, the material liquid of the plastic lens (various simple liquids) can be applied. It is also possible to increase the wall thickness by applying a body, etc., and add a correction amount for the correction power.

In this case, the lens to be processed is preferably made of any one of acrylic, styrene, CR-39, urethane, thiourene, epoxy, and sulfur-containing epoxy resin.

The lens material liquid is preferably the same resin in view of the coefficient of linear expansion of the resin and the like, but is not limited thereto. As the material liquid, unsaturated monomers having a double bond such as acryl and styrene, CR-39, ゥ Thermosetting monomers such as urethane, thiourethane, epoxy, and sulfur-containing epoxy can be used.

The coating is performed on the unfinished lens so that the thickness of the coating layer made of the material liquid gradually changes from the center to the periphery of the lens. When a coating layer having a desired thickness is obtained, polymerization is performed. The polymerization can be carried out by heat, ultraviolet light, radiation or the like, depending on the type of the monomer used. After polymerization, it is polished to obtain a finished lens. However, in the case of an anaerobic resin such as a sulfur-containing epoxy resin, prepare a mold of the desired degree, apply the resin to the surface of the lens, press the mold, seal the surroundings, and contact the air. It is necessary to carry out heat polymerization without causing contact.

As the above application, various modifications of the lens specifications by post-processing are possible, including applying a colored lens material liquid, applying a lens material having a different refractive index, and the like.

According to the present invention using the above-described ink jet apparatus, since various liquids such as primer coating liquid, hard coating liquid and the like can be stored in a sealed state at a low temperature, the life of each liquid can be greatly extended, It is possible to eliminate problems such as wasteful disposal of liquid in the dive method. In addition, since a uniform film thickness can be obtained as compared with the diving method, a hard coating layer having a different refractive index can be laminated to provide an antireflection function. Further, a colored lens having a rich color tone can be obtained by combining hard coating solutions colored in different colors. In addition, since it can be applied only to a specified part of the lens, photochromic processing can be partially performed, processing is performed only on practical parts, and the visual field is lost even in situations where the brightness changes rapidly Can be avoided. Furthermore, the application range of a coating method using an ink jet device is wide, such as forming a fine uneven surface to provide an antireflection function. BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the present invention will be described based on examples, but the present invention is not limited to these examples.

1. Example of forming hard coating layer (1)

Although not particularly shown, the coating device was configured using the head of the ink jet printer on hand. The ink jet printer is a thermal ink jet color jet printer with a four-color configuration. The diameter of the nozzle is 40 zm, and the pitch in the direction perpendicular to the running direction of the head is 120〃m.

The plastic lens is held horizontally with the object plane facing down, the lens is held in the paper feed direction via a slide bearing, and the feed amount is linked with the feed mechanism of the ink jet printer to adjust the feed roller. Linked to match surface speed. This feed direction was set to the Y-axis direction, and a feed device that can move a small amount in the orthogonal X-axis direction was prepared. The position of the lens was set at 20 mm below the nozzle of the ink jet. An ultrasonic vibrator is attached to the lens holding part to facilitate leveling of various coating liquids.

Next, a primer coating solution was prepared. 50 parts by weight of block-type polyisocyanate (parts by weight, the same applies hereinafter), 36 parts of polyester polyol, 0.4 part of zinc octoate, 0.3 part of a silicon-based leveling agent, 20 parts of ethyl ethyl solvent 0 parts and methanol 300 parts were uniformly mixed to obtain a nonvolatile content of about 17% by weight. The refractive index of the primer coating solution was 1.5, the viscosity was 6 mPa's, and the surface tension was 0.025 N / m. This primer coating solution was injected and sealed for all four colors instead of the ink for four colors of the ink jet, and all four colors were operated. In this example, the plastic There is no phenomenon that penetrates the paper because droplets are applied on the glass, and the adjacent dots do not repel each other and spread out flatly, and no banding phenomenon was observed because there was no seepage. . The diameter of the plastic lens is desired thickness with 8 0 mm is about 1 in dry, non-volatile content because 1 7% as described above, the coating amount is specific gravity 1.0 and to lcm ² per Ri 0 7.2 mg is required, and 30.1 mg for one lens. After coating the entire surface with the primer coating solution, the coating solution was set and the coating solution was repellered. The coating solution was heated and dried at 90 ° C. for 1 hour to form a primer coating layer. When the film thickness was measured, it was 0.9 μm.

Hard coating was continued when the primer coating layer was dry to the touch. The preparation of the hard coating solution is as follows. 35 g of 3-glycidoxypropylmethyl ethoxysilane and 5 g of tetramethoxysilane were poured into a flask, and 7.5 g of 0.05 N dilute hydrochloric acid was added dropwise over 30 minutes while stirring under ice-cooling. Further, 50 g of a methanol solution of antimony oxide sol (nonvolatile content: 30%) was added, and the mixture was aged at 20 to 25 ° C. for 16 hours, and then 20 g of ethanol was added. A coating solution was prepared by adding 80 g of alcohol and 0.6 g of aluminum perchlorate hexahydrate respectively. The viscosity of this liquid was 5 mPa · s, the surface tension was 0.03 N7m, and the refractive index was 1.55. The fine particles of antimony oxide used had an average particle diameter of 20 to 30 nm. Apply the ink once every evening with the same ink jet printing as in the case of primer coating, make sure that the coating solution has leveled, heat dry, and apply the same coating again when dry to the touch. Completed. At the point where the leveling was performed using an ultrasonic vibrator, heating and drying were performed at 120 ° C for 1 hour to complete the hard coating layer. When the film thickness was measured, it was 2 m. 2. Example of hard coating layer formation (2)

A hard coating solution was prepared in the same manner except that fine particles (particle diameter: 20 nm) of silicon force were used in place of antimony oxide in the hard coating solution of the first example. The refractive index of this liquid was 1.49. When applying the hard coating solution, it was applied in the same manner as in the first example except that it was used for the second application, and dried. The plastic lens of this example has a film-forming configuration in which the first layer is a primer coating layer (refractive index 1.5), the second layer is a hard coating layer (refractive index 1.55), and the third layer is a third layer. Since the layer is a hard coating layer (having a refractive index of 1.49) and high and low refractive layers are alternately laminated, if the refractive index of the plastic lens substrate is 1.6 or more, these The coating layer exhibited a reflection reducing effect, and the effect of making interference fringes less visible was recognized.

Ink jet printing is applied with droplets, but since the nozzle used has a relatively large bite of 120〃m, it is preferable that adjacent droplets be sprayed at equal intervals. I do. The droplets are almost spherical and attempt to flatten by colliding with the lens surface. Therefore, adjacent droplets are connected to form a surface. When four colors of ink jet printing are used, a continuous surface texture can be obtained by shifting the position of each head. In this case, the amount of application is also quadrupled, so that the number of application times can be reduced. Actually, the repeller was allowed to set for a set time, and then heated and dried. 3. Example of photochromic layer formation

Next, photochromic processing will be described.

In conventional mouth opening mixing, a coating composition containing a large amount of resin was used to form a single strong layer.In the present invention, silver halide is dispersed at high density as an ink. Fix between hard coating layers without forming a particularly strong film. As the photomixing solution, vigorously mix 45 parts of glycidoxypropyl methoxysilane, 60 parts of tetramethoxysilane, 50 parts of isopropyl alcohol, and 0.1 part of a silicon surfactant. Then, 43 parts of a 0.05 N hydrochloric acid aqueous solution was added, and the mixture was stirred for 24 hours to carry out hydrolysis. Next, 0.2 parts of stannous chloride and 70 parts of silver bromide having an average particle size of 40 m〃 were added to prepare a coating composition having a viscosity of 5 mP · s. Examples of the silver halide include silver bromide, silver chloride, silver iodide and the like. The above-described photochromic coating layer was placed on the area approximately 40% above the eye-facing surface of the lens in which the above-mentioned primer coating layer and hard coating layer were previously provided with a film thickness of 1 μm. The coating liquid is applied twice using two of the four colors of the ink jet, and then about 20% of the area is covered with the photomixing liquid and the hard coating liquid by the other two. Using a color ink jet, these droplets are applied alternately or in close stripes to form a blurred portion, and the remaining 40% area is hard-coated. Coating solution only. The film was pre-dried at 85 ° C. for 20 minutes, and then cured at 120 ° C. for 90 minutes to obtain a film thickness of lym. Further, a hard coating solution was applied on the entire surface of the lens so as to have a thickness of 1 m at the time of drying, and the surface of the hard coating layer was made to have a uniform surface property and dried by heating.

When the lens thus obtained was exposed to sunlight, the upper part was colored purple and the middle part was colored purple. These processes were performed only on one side of the lens, but there is no problem in processing on both sides. Since the photochromic layer is located above the lens, it prevents glare caused by direct sunlight when worn outdoors, and forms a photochromic layer when the vehicle enters the tunnel during vehicle operation. Visibility can be secured by other parts.

4. Example of forming fine uneven surface

Next, an example of forming a fine uneven surface will be described. As described above, the four-color ink jet apparatus used in this embodiment has a nozzle diameter of 40 μm and a relatively large pitch of 120 μm, so that the particle diameter of one droplet is 800 μm. m, it is difficult to form a convex with a size of 100 to 20 nm even if a coating solution with a volatile content of 10 to 17% is prepared. is there. Therefore, a hard coating solution using silica fine particles (particle diameter of 20 nm) described above and a hard coating liquid using silica having a particle diameter of 160 ηm adjusted to 25%. A dosing solution was prepared.

First, a plastic coating having a thickness of 0.5 to 1 μm was applied to the plastic lens on which the above-mentioned primer coating layer was formed by using a hard coating solution using silica having a particle diameter of 20 nm as the first layer. After forming a hard coating layer, drying by heating, and cooling to room temperature, the coating is performed two or three times with a hard coating solution using silica having a particle size of 160 nm to obtain the number of the silicic acid. , And the screw force of 160 nm was spread uniformly. At this time, the liquid applied by the ultrasonic vibrator was relaxed to eliminate the overlap of silica as much as possible. The second layer of the hard coating liquid preferably has a non-volatile content ratio as small as possible, and is adjusted to the lowest surface tension value at which the droplet property as an ink jet is ensured. After the completion of the application, the mixture was heated to evaporate the volatile portions, thereby forming a second hard coating layer. When the state of the second layer was confirmed by an electron microscope, it was confirmed that the silica particles were closely adhered and did not overlap, and half of the particles were fixed with fine irregularities. The color of this surface was blue, and the light reflectance was 2%. This fine uneven surface is an antireflection layer of a heterogeneous layer whose refractive index changes continuously.

5. Example of power adjustment by applying lens material liquid

Next, an example of power adjustment by applying a lens material liquid will be described.

For example, a diameter of 75 mm, made of copper resin, The lens is washed with an aqueous alkaline solution to remove stains such as release agent components on the surface, and then dried. Then, a two-component mixed urethane resin monomer is applied by an ink jet so that the thickness gradually increases from the center of the lens to the peripheral edge, and the thickness of the flange is 1.5 to 2 The thickness should be about mm. After coating is completed, heat polymerization is continued. After cooling to room temperature, remove it from the heater and polish the coated surface to obtain a 3-dioptric lens.

6. Example of coloring the lens edge

When plastic lenses are used as spectacles or mounted on spectacle frames, the periphery of the lens is decorated with the color and design of the spectacle frames. However, when lighter eyeglasses are needed, frameless eyeglasses are preferred. When decorating the periphery of the lens in such frameless spectacles, for example, it is conceivable to color the portion corresponding to the frame.

In the case of coloring with an ink jet device, any color tone can be obtained by enclosing a colorant in each of the four color ink jets used in this embodiment and mixing the three primary colors with black. Pigments such as Solvent Red and Solvent Toy Yellow as red, Solvent Blue and Solvent Yellow as green, Solvent Blue as blue and carbon black as black are preferably used. Suitable resins include amine-modified epoxy resin, acrylic silicone resin, acrylic resin varnish, and melamine resin, and solvents such as methyl ethyl ketone and methyl alcohol are suitable. Others In order to express gold and silver, inorganic pigments such as iron oxide-based brown, ollic yellow, and furnace black can be used as appropriate. The colorant is adjusted to have a viscosity of 2 to 5 mPa · s and a surface tension of 0.03 to 0.06 N / m. The signal for starting the ink jet is performed by a computer, and the design and color tone are adjusted independently. Coloring is applied to the side of the finished plastic lens, the periphery of the objective surface of the finished or unfinished lens, and the periphery of the eye surface as appropriate. In the stage of coloring, the peripheral portion may be colored first before forming the desired shape as eyeglasses, or the lens may be cut into a desired shape first and then colored on the peripheral portion. . The design of the portion to be colored may be colored in any shape without being limited to the frame shape. Industrial applicability

As described above, according to the method for processing a plastic lens according to the present invention, various processing such as frequency adjustment, hard coating, coloring, photochromism, and anti-reflection can be freely performed by the ink jet apparatus. Since it can be performed, the obtained lens is suitably used as a lens for various kinds of glasses such as eyesight correcting glasses, sunglasses, and fashion glasses.

Claims

The scope of the claims

1. One or more of various coating liquids, such as plastic lens material liquid, primer coating liquid, hard coating liquid, dyeing liquid, coloring coating liquid, etc., are plasticized using an ink jet device. A plastic lens which is applied to the surface of a lens and the coating solution is impregnated or formed into a film on the surface of the plastic lens.

2. The plastic lens according to claim 1, wherein the coating liquid is applied to a part or all of an objective surface and a Z surface or an eye surface of a plastic lens.

3. The plastic lens according to claim 1, wherein a plurality of hard coating layers are provided by sequentially applying hard coating liquids having different refractive indices to form respective films.

4. One or more colored hard-coating layers are applied by applying one or more colored hard-coating liquids, and one or more colored hard-coating layers are provided. A plastic lens as described in.

5. The photoreactive substance is fixed between the lens surface and the layer formed by the coating liquid and / or between the layers formed by the coating liquid. 5. The plastic lens according to any one of items 4 to 4.

6. One or more of the above-mentioned various coating solutions are coated with fine particles and applied to form fine irregularities on part or all of the objective surface and / or the eye surface of the lens surface and reflect the lens. The plastic lens according to any one of claims 1 to 5, wherein light is reduced.

7. The plastic lens according to claim 1, wherein the material of the plastic lens is applied to part or all of the objective surface and / or the eye surface of the plastic lens to adjust the power of the lens. Chic lens.

8. The plastic lens according to claim 1, wherein a colored portion is formed on a part or the entire periphery of the lens using a dyeing solution or a coloring coating solution.

9. Inject one or more of various coating liquids, such as material liquid for blast lens, primer coating liquid, hard coating liquid, dyeing liquid and colored coating liquid. A method for processing a plastic lens, comprising applying the coating solution to the surface of a plastic lens using an apparatus and impregnating or forming a film on the surface of the plastic lens.

10. Applying the above various coating solutions at least twice using an ink jet device and arranging coating droplets of different properties to form a coated surface where these properties are synthesized. The method for processing a plastic lens according to claim 9, wherein: