JPH0610681B2 - Method for producing dyeable antireflection lens - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for producing a dyeable antireflection lens.

[Prior Art] A lens for spectacles has a problem that a reflection image called a ghost or a flare is generated due to reflection of a light beam when the lens is worn, and the eye is uncomfortable. As a method for improving these, conventionally, a method of forming an antireflection film on a lens substrate has been performed. Further, various proposals have been made regarding a method for forming an antireflection film. (Optical technology contact Vo
l.9, no.8, 17-23 (1971)).

On the other hand, with respect to spectacle lenses, with the recent trend of fashioning, there is an increasing demand for so-called gradation dyeing, that is, so-called gradation dyeing, which is called half-color, in which the lens is tinted (usually the upper part is dark).

As described above, for the purpose of satisfying both the antireflection function and the coloring of the lens, the conventional method is to dye the lens base material in advance by dyeing or dyeing the lens base material, It is to apply antireflection processing.

However, the antireflection colored lens formed by this method has the following problems.

(1) When forming an antireflection film by the mounting method, a high degree of vacuum is required, so the color depth of the colored lens to be processed,
Hue changes before and after anti-reflection processing and poor reproducibility.

(2) When a liquid substance is used to form an antireflection film by a coating method, when the colored lens is immersed in the liquid substance, the colored substance falls off, the color change of the colored substance causes the color depth of the colored lens, The hue changes before and after the antireflection treatment.

(3) In either the vapor deposition method or the liquid material coating method, since the antireflection film is formed later, it is not possible to easily meet the demands for various coloring.

(4) If an error occurs in the antireflection processing process, it is difficult to reproduce, and the cost is seriously affected.

Further, a technique for forming a surface coating on the lens surface and dyeing the surface coating has been studied.

Japanese Unexamined Patent Publication (Kokai) No. 49-14139 proposes a hard coating consisting of a single layer film of 0.3 micron or more made of a silicon compound on an acrylic base material.

As another known example, a technique has been proposed in which at least two coating layers are formed on a base material and cross-linked and cured by irradiating with active energy rays (Japanese Patent Laid-Open No. Sho 50).
-145246).

As another known example, a technique has been proposed in which a hard polysiloxane coating is provided on a substrate and a patterned article is obtained by dyeing or the like (JP-A-53-30677).

[Problems to be Solved by the Invention] However, in the technique disclosed in JP-A-49-14139, dyeing is difficult, and the total light transmittance is limited to about 94.5%. It had a problem that it could not be done.

Further, the films of two or more layers disclosed in JP-A-50-145246 all change the concentration of the photosensitizer, and it is difficult to effectively prevent reflection.

Furthermore, since the technique described in Japanese Patent Laid-Open No. 50-145246 is a single-layer coating, the antireflection effect is not satisfied. That is, none of these three known examples can be expected to have an antireflection effect.

Further, in JP-A-57-37301, a hard coat layer of synthetic resin is provided on the surface of a lens substrate, and an antireflection layer composed of a single layer or a multilayer synthetic resin layer is provided on the hard coat layer. Synthetic resin lenses are described. However, there is no description of colloidal silica in such known examples, and therefore, there is a problem that dyeability is poor.

The present invention is intended to solve these problems, and an object of the present invention is to provide a method for producing an antireflection lens that can be dyed at a high density and that has a high antireflection effect.

Further, the technique which is the key point of the present invention is to perform multi-layer coating using liquid coating materials having different refractive indexes, which cannot be recalled at all by the conventional techniques, and to contain colloidal silica in a layer having a higher refractive index. Therefore, the antireflection function and the dyeability are exhibited.

[Means for Solving the Problems] The present invention has the following configurations in order to achieve the above object.

“In the method of manufacturing a lens composed of a lens substrate and an antireflection film on the surface of the lens substrate, a lens substrate made of a dyeable material is first coated with a liquid substance to form a metal compound-containing component. Is provided with at least one layer having a high refractive index, and the layer in contact with at least the layer having a relatively low refractive index of the layer having a high refractive index is composed of a component containing colloidal silica, and then a liquid A method for producing a dyeable antireflection lens, characterized in that at least one layer having a relatively low refractive index containing colloidal silica is provided by using a material coating method. Examples of the lens base material include diethylene glycol bisallyl carbonate polymer, polycarbonate, polyurethane, epoxy resin, and Styrene and its copolymers, other polymethylmethacrylate and plastic materials typified copolymers thereof,
It also includes glass that has been subjected to a dyeable treatment. Further, in the case of a material that cannot be dyed, such as a base material typified by inorganic glass, a dyeable lens base material of the present invention may include a base material coated with a dyeable coating material.

Examples of dyeable coating materials include USP 4,22
The dyeable and hardened coating described in No. 1,823 is mentioned as a suitable example. Furthermore, these dyeable and hardened coatings,
When plastic is used as the lens substrate, it is expected to improve various physical properties such as adhesion, hardness, chemical resistance, and durability.

The dyeing referred to in the present invention includes disperse dyes, basic dyes, acid dyes, organic complex dyes, and other organic dyes for dyeing the lens substrate and / or the antireflection film as a whole, and blurring gradations such as gradation. In addition, this includes pattern dyeing with transfer paper. Further, the dye used for dyeing should be controlled in advance with water, a sizing agent, a dyeing auxiliary agent, a surfactant, a leveling agent, a pH adjusting agent, etc. to have properties suitable for the purpose. On the other hand, for the purpose of increasing the dyeing speed, dyeing density, etc., it is possible to easily add various organic chemicals called carriers to improve the dyeing characteristics. In addition, a viscous paste-like dye compounding solution is prepared by the above-mentioned method, and then the antireflection film is colored directly by a screen printing method or the like, or a pattern pattern is first formed with a dye paste on paper,
It is printed on a flexible substrate such as cloth or film, and these are pasted on the antireflection film to form a close contact between the dye layer and the surface of the antireflection film.
Dyeing of a pattern or the like is realized by a method in which the dye is transferred to the coating film and fixed by heating at 70 ° C. for 10 minutes to 2 hours. After the completion of dyeing, the excess dye paste and dye support layer may be removed by washing with hot water or water.

Also, as dyes, not only colored dyes that have absorption in the visible region, but also photochromic dyes that develop color by ultraviolet light,
Alternatively, a fluorescent dye that emits fluorescence is also included in this.

As a method for forming an antireflection film, a method of coating with a liquid substance is used because it is simple and, in the case of a plastic substrate, from the viewpoint of preventing cracks generated during dyeing due to a difference in linear expansion coefficient.

Further, as the liquid composition for forming a coating film which imparts antireflection property by coating with a liquid substance, various volatile solvents for imparting necessary coating workability other than the case where only the film forming substance is formed. Those containing can also be used.

Here, the liquid composition is a composition having a viscosity in a range in which ordinary coating work can be applied, and a composition having a viscosity of 10 poise or less, preferably 1 poise or less at an application temperature is used. That is, it may be difficult to obtain a uniform coating film with a liquid composition having a viscosity higher than this. As a coating method, a method used in ordinary coating work can be used, but from the viewpoint of controlling the thickness of a thin film, curtain flow coating, dip coating, spin coating and the like are preferable.

The antireflection film in the present invention is a film that provides a transparent substrate with an antireflection effect by forming a plurality of thin layers having relatively different refractive indexes, and has a relatively high refractive index. At least one layer comprising a component containing a metal compound is disposed on the substrate as a layer having, and the layer in contact with the layer having a relatively low refractive index of the layer having a high refractive index contains silica. It is necessary that the layer is composed of components. Further, at least one layer containing silica and having a relatively low refractive index is also disposed on the surface side. Preferred specific examples include a coating having a high refractive index, which is obtained from titanium or zirconium alkoxide or chelate compound, epoxy resin, and colloidal silica, and colloidal silica and the general formula R ¹ _a R ² _b Si (OR) _{4 -ab} in combination with a coating having a low refractive index whose main component is a hydrolyzate of an organosilicon compound. In this case, it goes without saying that the selection of the thickness and refractive index of each coating is important in order to maximize the antireflection effect.

Specific examples of the titanium or zirconium alkoxide or chelate compound for forming the above-mentioned coating having a high refractive index include titanium tetraethoxide, titanium tetra-i-propoxide, titanium tetra-n-propoxide and titanium tetra. -N-butoxide, titanium tetra-sec-butoxide, titanium tetra-tert-butoxide, zirconium tetraethoxide, zirconium tetra-i-propoxide, zirconium tetra-n-propoxide, zirconium tetra-n-butoxide, zirconium tetra- sec-Putoxide, metal alcoholate compounds such as zirconium tetra-tert-butoxide,
Further, di-isopropoxytitanium bisacetylacetonate, di-butoxytitanium bisacetylacetonate, di-ethoxytitanium bisacetylacetonate, bisacetylacetone zirconium, tri-n.
Examples thereof include chelate compounds such as butoxide zirconium monoethylacetoacetate.

In the organosilicon compound represented by the general formula R ¹ _a R ² _b Si (OR) _4-ab used for forming a coating having a low refractive index, R ¹ and R ² are each an alkyl group or an alkenyl group. Represents a hydrocarbon group having an allyl group, a halogen group, an epoxy group, an amino group, a mercapto group, a methacryloxy group or a cyano group, and R represents an alkyl group having 1 to 8 carbon atoms, an alkoxyalkyl group, an acyl group. And a and b are 0 or 1. Of these organosilicon compounds, a composition containing an epoxy group-containing compound is particularly effective for producing the antireflection colored lens of the present invention.

Specific representative examples of these organosilicon compounds include:
Glycidoxymethyltrimethoxysilane, glycidoxymethyltriethoxysilane, α-glycidoxyethyltrimethoxysilane, α-glycidoxyethyltriethoxysilane, β-glycidoxyethyltrimethoxysilane, β-glycid Xyethyltriethoxysilane, α-
Glycidoxypropyltrimethoxysilane, α-glycidoxypropyltriethoxysilane, β-glycidoxypropyltrimethoxysilane, β-glycidoxypropyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ- Glycidoxypropyltriethoxysilane, γ-glycidoxypropyltripropoxysilane, γ-glycidoxypropyltributoxysilane,
γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, γ-glycidoxypropyltriphenoxysilane, α-glycidoxybutyltrimethoxysilane, α-glycidoxybutyltriethoxysilane, β-glycidoxybutyltrimethoxysilane, β-glycidoxybutyltriethoxysilane, γ-glycidoxybutyltrimethoxysilane, γ-
Glycidoxybutyltriethoxysilane, δ-glycidoxybutyltrimethoxysilane, δ-glycidoxybutyltriethoxysilane, (3,4-epoxycyclohexyl) methyltrimethoxysilane, (3,4-epoxycyclohexyl) methyl Triethoxysilane, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, β-
(3,4-epoxycyclohexyl) ethyltriethoxysilane, β- (3,4-epoxycyclohexyl) ethyltripropoxysilane, β- (3,4-epoxycyclohexyl) ethyltributoxysilane, β- (3,4- Epoxycyclohexyl) ethyltrimethoxyethoxysilane, β
-(3,4-epoxycyclohexyl) ethyltriphenoxysilane, γ- (3,4-epoxycyclohexyl) propyltrimethoxysilane, γ- (3,4-epoxycyclohexyl) propyltriethoxysilane, δ- (3,4 -Epoxycyclohexyl) butyltrimethoxysilane, δ-
(3,4-epoxycyclohexyl) butyltriethoxysilane, glycidoxymethylmethyldimethoxysilane, glycidoxymethylmethyldiethoxysilane, α-glycidoxyethylmethyldimethoxysilane, α-glycidoxyethylmethyldiethoxysilane , Β-glycidoxyethylmethyldimethoxysilane, β-glycidoxyethylmethyldiethoxysilane, α-glycidoxypropylmethyldimethoxysilane, α-glycidoxypropylmethyldiethoxysilane, β-glycidoxypropylmethyl Diethoxysilane, β-glycidoxypropylmethyldiethoxysilane, γ-glycidoxypropylmethyldimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, γ-glycidoxypropylmethyldipropoxysilane, γ-glycidoxy Cypropylmethyldibutoxysilane, γ-glycidoxypropylmethyldimethoxyethoxysilane, γ-glycidoxypropylmethyldiphenoxysilane, γ-glycidoxypropylethyldimethoxysilane, γ-glycidoxypropylethyldiethoxysilane, γ-glycidoxypropylvinyldimethoxysilane, γ-glycidoxypropylvinyldiethoxysilane, γ-glycidoxypropylphenyldimethoxysilane, γ-glycidoxypropylphenyldiethoxysilane and other epoxy group-containing organosilicon compounds and Its hydrolyzate, methyl silicate, ethyl silicate,
n-propyl silicate, i-propyl silicate, n
-Butyl silicate, sec-butyl silicate and t-
Tetraalkoxysilanes such as butyl silicate, and their hydrolysates, further methyltrimethoxysilane, methyltriethoxysilane, methyltrimethoxyethoxysilane, methyltriacetoxysilane, methyltributoxysilane, ethyltrimethoxysilane, ethyltriethoxy. Silane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltriacetoxysilane,
Vinyltrimethoxyethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, phenyltriacetoxysilane, γ-chloropropyltrimethoxysilane, γ-chloropropyltriethoxysilane, γ-
Chloropropyltriacetoxysilane, 3,3,3-trifluoropropyltrimethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-mercaptopropyltrimethoxysilane Silane, γ-
Mercaptopropyltriethoxysilane, N-β (aminoethyl) -γ-aminopropyltrimethoxysilane,
β-cyanoethyltriethoxysilane, methyltriphenoxysilane, chloromethyltrimethoxysilane, trialkoxy such as chloromethyltriethoxysilane, triacyloxy or triphenoxysilanes or hydrolysates thereof and dimethyldimethoxysilane, phenylmethyldimethoxysilane, Dimethyldiethoxysilane, phenylmethyldiethoxysilane, γ-chloropropylmethyldimethoxysilane, γ-chloropropylmethyldiethoxysilane, dimethylacetoxysilane, γ-
Methacryloxypropylmethyldimethoxysilane, γ
-Methacryloxypropylmethyldiethoxysilane,
γ-mercaptopropylmethyldimethoxysilane, γ-
The dialkoxysilanes or diacyloxysilanes such as mercaptopropylmethyldiethoxysilane, γ-aminopropylmethyldimethoxysilane, γ-aminopropylmethyldiethoxysilane, methylvinyldimethoxysilane, and methylvinyldiethoxysilane or their hydrolysates are Here is an example.

These organosilicon compounds may be added alone or in combination of two or more.

These organosilicon compounds are preferably used after being hydrolyzed in order to lower the curing temperature and accelerate curing.

Hydrolysis is produced by adding pure water or an acidic aqueous solution such as hydrochloric acid, acetic acid or sulfuric acid, and stirring. Furthermore, the degree of hydrolysis can be easily controlled by adjusting the amount of pure water or acidic aqueous solution added. At the time of hydrolysis, it is particularly preferable to add pure water or an acidic aqueous solution that is at least equimolar and at most 3 times the molar amount of the alkoxy group from the viewpoint of accelerating the curing.

During hydrolysis, it is possible to hydrolyze without solvent because alcohol etc. will be generated.However, for the purpose of making the hydrolysis even more uniform, it is necessary to mix the organic silicon compound with the solvent and then perform the hydrolysis. Is also possible. It is also possible to remove an appropriate amount of alcohol after hydrolysis under heating and / or reduced pressure for use depending on the purpose, and to add an appropriate solvent after that.

Examples of these solvents include alcohols, esters, ethers, ketones, halogenated hydrocarbons, and aromatic hydrocarbons such as toluene and xylene.
Further, these solvents can be used as a mixed solvent of two or more kinds, if necessary. Further, depending on the purpose, it is possible to accelerate the hydrolysis reaction and further heat it to room temperature or higher in order to proceed the reaction such as precondensation, or to lower the hydrolysis temperature to room temperature or lower in order to suppress precondensation. It goes without saying that it is possible to do it.

In the present invention, the lens provided with the antireflection layer on the lens substrate is required to have a total light transmittance of 94.8% or more as a whole. If it is less than 94.8%, ghosts, flares, etc. occur, and there is substantially no antireflection function. Further, it is to ensure high transparency and maintain the transparency even when dyed in a subsequent stage.

The colored lens having the antireflection property obtained by the manufacturing method of the present invention has an effect that not only the reproducibility is improved as compared with the conventional one but also the various requirements of the customer can be promptly responded to. . This means that, for example, it becomes possible to dye lenses, which have been subjected to antireflection processing in advance, at the store of an eyeglass store according to the taste of the customer.

The lens referred to in the present invention includes not only spectacle lenses for sunglasses, fashion glasses, safety spectacles, corrective lenses, but also ski goggles.

[Examples] The contents of the present invention will be described below with reference to Examples, but the invention is not limited thereto.

Example 1 (1) Preparation of coating composition for the first layer 0.186 g of a silicone-based surfactant and 160.0 g of acetylacetone under stirring and methanol-dispersed colloidal silica (average particle size 12 ± 1 mμ, solid content 30%) 1
8.0 g is added. After sufficiently stirring, 15.5 g of tetra-n-butyl titanate was further added and sufficiently stirred to obtain a coating composition.

(2) Preparation of second layer coating composition (a) Preparation of silane hydrolyzate γ-glycidoxypropyltrimethoxysilane 56.5
g, and 24.0 g of vinyltriethoxysilane, 19.8 g of a 0.05N hydrochloric acid aqueous solution was added dropwise under stirring while controlling at 10 ° C. 1 more at room temperature after dropping
Stirring was carried out for a time to obtain a silane hydrolyzate.

(b) Preparation of coating composition n-
Propanol 150.5 g, water 71.2 g, ethyl cellosolve 23.9 g, the same methanol-dispersed colloidal silica 32.5 g used in Example 1, silicone surfactant 0.22 g and aluminum acetylacetonate 0.98 g. The mixture was added and thoroughly mixed with stirring to obtain a coating composition.

(3) Coating and curing First, using the coating material prepared in (1) above, diethylene glycol bisallyl carbonate polymer lens (diameter 75 mm, thickness 2.1
mm, CR-39 plano lens) was spin-coated under the following conditions. The coated lens was heated and dried at 90 ° C. for 1 hour.

Spin coating conditions Rotational speed: 3500 rpm Rotational time: 60 seconds After drying by heating, dipping in hot water at 40 ° C. for 1 hour, and further 11
It heat-dried at 0 degreeC for 1 hour.

The second layer coating composition prepared in the above (2) and (b) was spin-coated on the obtained first layer under the same conditions as the first layer, and after coating, heated for 2 hours in a hot air dryer at 93 ° C. Cured.

(4) Test result The total light transmittance of the obtained lens was 96.7%, and the lens was an antireflection lens having a reddish purple reflected light color. The total light transmittance of the lens before antireflection processing was 92.6%. Further, this antireflection lens is used in a dyeing bath in which disperse dyes mixed with three colors of red, blue and yellow are dispersed and dissolved in water.
Staining was performed at 0 ° C. for 30 minutes. This lens was dyed to a total light transmittance of 40.6%. Further, the antireflection effect was not deteriorated after dyeing.

Example 2 (1) Preparation of Undercoating Composition (a) Preparation of Silane Hydrolyzate γ-Glycidoxypropylmethyldiethoxysilane 10
6.8 g was cooled to 10 ° C., 15.5 g of 0.05 N hydrochloric acid aqueous solution was gradually added dropwise with stirring, and after completion of the addition, stirring was continued at room temperature for 1 hour to obtain a silane hydrolyzate.

(b) Preparation of coating composition 25 g of an epoxy resin (“Epicote 827”, a product of Shell Chemical Co., Ltd.), 25 g of an epoxy resin (“Epolite 3002”, a product of Kyoeisha Yushi-Kagaku Kogyo Co., Ltd.) were added to the silane hydrolyzate. Acetone alcohol 58.9
g, benzyl alcohol 29.5 g, methanol 310
g, and 1.5 g of a silicone-based surfactant were added and mixed, and 416.7 g of the methanol-dispersed colloidal silica used in Example 1 and aluminum acetylacetonate 1 were mixed.
After 2.5 g was added and sufficiently stirred, a coating composition was prepared.

(2) Coating, curing and pretreatment of undercoat The diethylene glycol bisallylcarbonate polymer lens used in Example 1 was coated with the coating composition by the dipping method and heated at 93 ° C. for 4 hours. The cured lens was subjected to a pretreatment using a plasma treatment apparatus for surface treatment (PR 501A Yamato Scientific Co., Ltd.) for 2.5 hours at an oxygen flow rate of 100 ml / min and an output of 50 w.

(3) Production of antireflection film and test results The same procedure as in Example 1 was carried out except that the undercoat lens was used.

The total light transmittance of the obtained lens was 96.2%, and the reflected light color was reddish purple. When the abrasion resistance of the obtained lens was examined with # 0000 steel wool, almost no damage was observed even after abrasion.
Further, this antireflection lens is used at 90 ° C. by using a dyeing bath in which a disperse dye in which three colors of red, blue and yellow are mixed is dispersed and dissolved in water.
Stained for 30 minutes. This lens has a total light transmittance of 54.
It was dyed to 9%. The antireflection effect was not reduced even after dyeing. It should be noted that the total light transmittance of a lens composed only of undercoat treatment is 9
It was 2.78%.

Comparative Example 1 In Example 2, the undercoat-treated lens was dyed with a red dye in advance, and then an antireflection film was produced in exactly the same manner as in Example 2. Elution of the dye was observed in the first layer coating composition. , The solution turned red.

Example 3 The procedure of Example 2 was repeated except that the used lens was changed to a diethylene glycol bisallyl carbonate polymer lens having a lens power of -4.00 diopters.

The lens obtained had exactly the same performance as in Example 2.

Example 4 The procedure of Example 2 was repeated except that the used lens was changed to a diethylene glycol bisallyl carbonate polymer lens having a lens power of +2.00 diopters. The lens obtained had exactly the same performance as in Example 2.

Example 5 The lens used was an inorganic glass lens (diameter 65 mm, thickness 2.
0 mm) was used, and all the operations were performed according to Example 2.

The total light transmittance of the obtained lens was 94.8%, and when dyeing was carried out for a dyeing time of 3 hours, 70.0% was dyed. The total light transmittance of the untreated lens is 91.
It was 9%.

Comparative Example 2 A coating material was prepared according to Example 2 of JP-A-49-14139. That is, vinyltriethoxysilane 190
A solution of 1 part by weight, 136 parts by weight of methyltrimethoxysilane and 40 parts by weight of glacial acetic acid was hydrolyzed with an aqueous solution of 0.02N hydrochloric acid, and then n-butyl silicate 10 was added to this solution.
A liquid obtained by hydrolyzing 8 parts by weight and 40 parts by weight of ethyl alcohol was mixed, 2.0 parts by weight of sodium acetate and 20 parts by weight of benzyl alcohol were further added, and they were completely dissolved to obtain a paint. This coating composition was applied to a lens of "CR-39" under the same conditions as in the first layer of Example 1 and cured by heating. The hardness, scratch resistance, and solvent resistance of the obtained lens were favorable, but the total light transmittance was 94.5%, which was inferior to those of Examples 1 to 5, and the coating film It had almost no dye permeability and dyeability, and could not be dyed.

Comparative Example 3 In Example 1, except that the colloidal silica contained in both the first layer and the second layer was excluded, and the layer thickness of each layer was optimized to the condition that maximum transmittance was obtained.
All were carried out in the same manner as in Example 1. As a result, the total light transmittance of the obtained lens was 97.3%, but the total light transmittance after dyeing was 93.0%, which is completely impractical as a dyed lens. It was

EFFECTS OF THE INVENTION The present invention comprises a high refractive index layer containing a metal compound, which is a layer containing silica at least in a layer in contact with the low refractive index layer, and a low composition containing a composition containing silica. Since a multiple layer antireflection coating consisting of a refractive index layer is formed by coating a liquid substance, it is possible to easily and efficiently manufacture a lens of a certain quality, and the lens obtained has an antireflection property. The dye can be excellent and can be dyed at a high density.

Claims (1)

[Claims] 1. A method for producing a lens comprising a lens substrate and an antireflection film on the surface thereof, wherein a component containing a metal compound is first applied onto a lens substrate made of a dyeable material by a liquid material coating method. Is provided with at least one layer having a relatively high refractive index, and the layer in contact with at least the layer having a relatively low refractive index of the layer having a high refractive index is composed of a component containing colloidal silica. A method for producing a dyeable antireflection lens, characterized in that at least one layer having a relatively low refractive index and containing colloidal silica is provided by a coating method of a liquid substance.