JP2003084102A - Optical film and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical film having an antireflection function as well as an optical correcting function such as absorption of near IR rays and color tone correction and having excellent productivity. SOLUTION: The optical film 10 has a transparent resin layer 1 made of a self-repairing photocuring resin, an antireflection layer 2 present on one side of the transparent resin layer 1, and a tone correcting layer 3 containing a dye having a color tone correcting performance and present in the opposite side of the transparent resin layer 1 to the antireflection layer 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical film having an antireflection function and an optical correction function such as color tone correction and near infrared absorption, and a method for producing the same.

[0002]

2. Description of the Related Art For example, various displays such as a cathode ray tube (CRT), a visual display terminal (VDT), a liquid crystal display (LCD), and a plasma display (hereinafter referred to as PDP) have been conventionally used. Further, in order to improve the visibility, an antireflection film is provided on the display screen. Further, the antireflection film may be used not only for displays but also for various optical articles such as buildings and windows of vehicles. Since such an antireflection film is usually provided as the outermost layer of an optical article or the like, it is susceptible to external damage, and if the external damage remains, the optical characteristics of the film change, so it is also important that the scratch resistance is good. Is.

Further, in a display such as a PDP in which electromagnetic waves are easily emitted from the display screen, it is particularly required to block near-infrared rays, which are heat rays and tend to cause noise in electronic devices, on the viewing side of the display screen. For example, Japanese Patent Application Laid-Open No. 10-219006 proposes an optical film having a polyurethane resin layer and a thin film layer having an antireflection function, and having infrared absorption capability. In this example, the infrared absorber is contained in the polyurethane resin layer or in the other synthetic resin layer. The polyurethane resin layer in this example is made of a transparent, self-healing and scratch-resistant thermoplastic polyurethane resin or thermosetting polyurene resin, and by providing an antireflection thin film layer on this layer, excellent scratch resistance is obtained. An antireflection film is obtained. However, a layer made of a thermoplastic or thermosetting polyurene resin requires a relatively long time to be formed, and thus has a problem of poor productivity.

Further, Japanese Unexamined Patent Publication No. 2000-249804 discloses an antireflection substrate in which a low refractive index layer for imparting an antireflection function is laminated on a transparent cured product layer of a photocurable resin. ing. In this example, a transparent cured material layer made of a photocurable resin can be formed by a simple and highly productive manufacturing method, and an antireflection substrate having excellent scratch resistance can be obtained with good productivity.

By the way, in order to improve the image quality of an optical article such as a color PDP that displays a color image,
In some cases, it is required to correct the color tone of visible light emitted from the screen. The color tone correction of visible light can be performed by, for example, transmitting a colored transparent layer having a characteristic of selectively absorbing light in a predetermined wavelength band. Furthermore, as described above, it may be required to block near-infrared rays on the viewing side of the display screen depending on the characteristics of the display.

The above-mentioned example describes that a near-infrared absorbing agent, a coloring agent or the like may be added to the photocurable resin. However, in the above example, even if the transparent cured product layer of the photocurable resin is added with a near-infrared absorbing function or a color correction function by adding a dye such as a near-infrared absorbing agent or a coloring agent, It was found that the desired optical correction function could not be properly obtained because the dye was deteriorated by UV irradiation for curing the resin.
It was also found that the dye in the photocurable resin blocks ultraviolet rays, resulting in difficulty in curing the photocurable resin by irradiation with ultraviolet rays, and the need to increase the amount of ultraviolet ray irradiation, resulting in a decrease in manufacturing efficiency. It was

The present invention has been made in view of the above circumstances, and an optical film having an antireflection function, an optical correction function such as color tone correction and near-infrared absorption and excellent productivity. It is intended to provide a manufacturing method.

[0008]

Means for Solving the Problems The inventors of the present invention have made extensive studies as to the cause of deterioration of a dye by irradiation with ultraviolet rays. As a result, radicals generated in a photocurable resin during irradiation of ultraviolet rays are a major cause of deterioration of the pigment. I found out that Then, when the dye is allowed to exist without contact with the photocurable resin, it is possible to prevent the deterioration of the dye at the time of ultraviolet irradiation, and the finding that the curing of the photocurable resin is not hindered, and the present invention is completed. Came to let.

That is, the optical film of the present invention comprises a transparent resin layer (1) made of a photocurable resin having a self-repairing property.
And an antireflection layer (2) present on one side of the transparent resin layer (1) and a color tone correction performance present on the opposite side of the transparent resin layer (1) to the antireflection layer (2). It is characterized by comprising a color tone correction layer (3) containing a dye. In the optical film of the present invention, the transparent resin layer (1) made of a photocurable resin can be rapidly cured by irradiation with ultraviolet rays, so that the transparent resin layer (1) can be easily formed with good productivity. It can be carried out. Further, since the color tone correction layer (3) is provided separately from the transparent resin layer (1) without containing the dye for color tone correction in the transparent resin layer (1) made of a photo-curable resin, Dye deterioration due to radicals generated in the transparent resin layer (1) during irradiation is prevented, and inhibition of curing of the photocurable resin by the dye is also prevented. Furthermore, since the transparent resin layer (1), which is the lower layer of the antireflection layer (2), is formed of a photocurable resin having a self-repairing property, the surface of the antireflection layer (2) is not easily scratched, which is excellent. Scratch resistance can be obtained. Further, since the antireflection layer (2) and the color tone correction layer (3) are integrated with the transparent resin layer (1) interposed therebetween, both the antireflection function and the optical correction function are obtained and the handleability is improved. Good, and easy to install and process.

In the present invention, the color-tone correcting layer (3) may contain a dye having a near-infrared absorbing property in addition to a dye having a color-tone correcting property. According to this structure, an optical film having both the function of correcting the color tone of visible light and the function of absorbing near infrared rays can be obtained.

In the present invention, the antireflection layer (2) is preferably made of a non-crystalline fluoropolymer. The non-crystalline fluoropolymer has a low refractive index, high transparency, and excellent antireflection properties. It is preferable to provide a layer made of this material on the transparent resin layer (1) having a self-repairing property. Scratch resistance is also obtained. The above-mentioned non-crystalline fluoropolymer is preferably a polymer having a fluoroaliphatic ring structure.

In the present invention, it is preferable to provide an intermediate layer having a higher refractive index than the transparent resin layer (1) between the transparent resin layer (1) and the antireflection layer (2). The effect is further improved. The intermediate layer is a layer made of a resin having a refractive index higher than that of the transparent resin layer, a layer made of a metal oxide having a refractive index higher than that of the transparent resin layer, or a refractive index of the transparent resin layer. It is preferably any one selected from the group consisting of a layer containing a metal oxide having a higher refractive index.

The method for producing an optical film of the present invention is a method for producing the optical film of the present invention, which comprises a color tone correction layer (3) comprising a transparent substrate and a dye having a color tone correction performance, The method is characterized by including a step of forming a transparent resin layer (1) made of a photocurable resin having a self-repairing property and an antireflection layer (2) in this order. By laminating the intermediate layer and the antireflection layer (2) on the transparent resin layer (1) in this order, an optical film including the intermediate layer can be manufactured.

Alternatively, in the method for producing an optical film of the present invention, a transparent resin layer (1) made of a photocurable resin having a self-repairing property and an antireflection layer (2) are provided on one surface of a transparent substrate. It is characterized by including a step of laminating in this order and a step of forming a color tone correction layer (3) containing a dye having a color tone correction performance on the surface opposite to the transparent substrate. By laminating the intermediate layer and the antireflection layer (2) on the transparent resin layer (1) in this order, an optical film including the intermediate layer can be manufactured.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a cross-sectional view of essential parts schematically showing an embodiment of an optical film according to the present invention. The optical film 10 of the present embodiment is provided with a transparent resin layer 1, an antireflection layer 2 provided on one side of the transparent resin layer 1, and an opposite side of the transparent resin layer 1 from the antireflection layer 2. And a color tone correction layer 3. Hereinafter, each layer will be described in detail.

[Transparent Resin Layer] In the present invention, the transparent resin layer 1 is made of a photocurable resin having a self-repairing property.
In the present invention, having self-healing property means that “a diamond tip having a tip diameter of 15 μm is used as an injured body in an atmosphere of 23 ° C. and a relative humidity of 50%, and the maximum load at which the produced damage can be eliminated is measured by a HEIDON scratch tester. It means that the “value” (hereinafter referred to as self-repairability) is 10 g or more. The self-healing degree of the transparent resin layer 1 in the present invention is 3
It is more preferably 0 g or more.

Further, the transparent resin layer 1 in the present invention comprises 2
From the viewpoint of having a practically sufficient strength, the tensile stress at an elongation of 10% by a tensile test method based on JIS K7127 under an environment of 3 ° C. and 50% relative humidity is preferably 2 MPa or more, and sufficient self-repairing property is obtained. From the viewpoint of having it, it is preferable not to exceed 30 MPa. Particularly, 2 to 20 MPa is preferable. In order to fully exhibit the self-repairing property of the transparent resin layer 1, the film thickness of the transparent resin layer 1 is preferably 10 μm or more, and is 1000 μm or less in order to efficiently promote photocuring. Is preferred. It is particularly preferably 20 to 500 μm.

The photocurable resin constituting the transparent resin layer 1 in the present invention is a composition containing a photopolymerizable monomer and a photocuring initiator as essential components, and is cured when irradiated with electromagnetic waves such as ultraviolet rays. It is a cured product having self-repairing properties. The photo-curing initiator is a material that absorbs light energy to be in an excited state to generate a radical that initiates a polymerization reaction of a photo-polymerizable monomer.

Examples of the polymerization reaction site of the photopolymerizable monomer include an acryloyl group, a methacryloyl group, a vinyl group, an allyl group, a mercapto group and an amino group. Particularly, an acryloyl group and a methacryloyl group are preferable because of high reactivity.

Specific examples of the photopolymerizable monomer include unsaturated polyesters, epoxy acrylates, urethane acrylates, polyester acrylates, alkyd acrylates, silicone acrylates, polyene / polythiol-based spirans, aminoalkyds, hydroxyethyl acrylates and vinyl ethers. . Among these, those having a low shrinkage rate upon curing are preferable, and specifically urethane acrylate is preferable. Two or more kinds of these monomers may be used in combination.

As the urethane acrylate, those obtained by using a non-yellowing polyisocyanate compound as a raw material are preferable.
Examples of the non-yellowing polyisocyanate include 4,4′-methylenebis (cyclohexyl isocyanate), isophorone diisocyanate, cyclohexane diisocyanate, tetramethylene diisocyanate and hexamethylene diisocyanate.

In the present invention, the cure shrinkage of the transparent resin layer 1 is preferably less than 10%, more preferably 8% or less. When the curing shrinkage is less than 10%, the optical film 10 does not warp, and particularly when used by being adhered to the display screen of various displays or other members,
The handling property at the time of pasting becomes good. here,
The curing shrinkage ratio in the present invention is a value represented by {(density after curing-density before curing) / density before curing} × 100 (%).

As the photo-curing initiator, benzoin ether, 1-hydroxycyclohexyl phenyl ketone, 2
-Methyl-1- (4- (methylthio) phenyl) -2-
Morpholinopropan-1-one, 2,2-dimethoxy-
Cleavage type photo-curing initiator such as 1,2-diphenylethan-1-one, benzophenone, thioxanthone, xanthone, 2-chlorothioxanthone, Michler's ketone, 2-
Examples thereof include hydrogen abstraction type photocuring initiators such as isopropylthioxanthone, benzyl, 9,10-phenanthrenequinone, and 9,10-anthraquinone. Two or more of these photo-curing initiators may be used in combination, if necessary.

The addition amount of the photo-curing initiator is determined by the kind of the photo-polymerizable monomer and the film thickness of the transparent resin layer 1, but is 0.1 to 1 per 100 parts by mass of the total amount of the photo-polymerizable monomer.
0 mass part is preferable. Further, in order to impart an additional function to the photocurable resin, a light stabilizer, an antioxidant, an ultraviolet absorber, an antistatic agent or the like is added to the photocurable resin within a range that does not hinder curing and does not impair elasticity. You may mix | blend with.

As a method for preparing the photocurable resin, a method in which the photopolymerizable monomer and the photocuring initiator are mixed and stirred at a temperature at which gelation does not occur until a uniform solution is formed is preferable.
As a light source for curing the photo-curable resin, a low-pressure mercury lamp, a high-pressure mercury lamp, an ultra-high-pressure mercury lamp, a metal halide lamp, an ultraviolet laser, an electrodeless discharge lamp, an electron beam, etc. are used to efficiently generate wavelengths that contribute to the curing reaction. Any device can be used.

As the method for forming the transparent resin layer 1, for example, a coating method such as a dip coating method, a roll coating method, a spray coating method, a gravure coating method, a comma coating method, a die coating method or the like is applied, and then the transparent resin layer 1 is irradiated with ultraviolet rays to be cured. The method can be used. Alternatively, using a cover material having a smooth and peelable surface and having good transparency to irradiation light such as ultraviolet rays, the coating surface coated by any of the above methods is It is also possible to use a method in which the cover material is covered so that its smooth and releasable surface is in close contact with the coating surface, and then light such as ultraviolet rays is irradiated to cure the covering material. The latter method is a preferable method because it can prevent an unfavorable influence on curing by oxygen or water in the air during photocuring and can obtain the transparent resin layer 1 having a smooth surface. When irradiating light such as ultraviolet rays with the cover material provided, the irradiation may be performed from the side where the cover material is provided through the cover material, or from the side opposite to the side where the cover material is provided. It doesn't matter. As the cover material, any material may be used as long as it has good transparency to the irradiation light and has a smooth and peelable surface, but it is made of a transparent polymer material, and at least one surface is subjected to an easy adhesion treatment. It is preferable that the film is not subjected to the coating, or that the release treatment is performed on at least one surface. For example, a polyester film, a polyacrylic film, a cellulose film, a polyether sulfone film, a polycarbonate film, etc. may be mentioned, but the invention is not limited thereto. In particular, a polyester film having one surface not subjected to the easy adhesion treatment is preferable. The polyester film is particularly preferably a polyethylene terephthalate film. The above-mentioned coating method allows continuous processing and is excellent in productivity as compared with the batch-type vapor deposition method and the like. In particular, the die coating method is preferable because it is excellent in continuous productivity, can form a film even in a large size, has a small film thickness deviation, and can easily handle from a small model to a large model.

The transparent resin layer 1 is prepared by a method of blending particles such as silica sol in the photocurable resin constituting the transparent resin layer 1 or a method of embossing the surface of the transparent resin layer 1.
An anti-glare layer can be formed on the surface of the. Alternatively, another transparent layer containing particles such as silica sol may be laminated on the transparent resin layer 1 to form an antiglare layer.

[Antireflection Layer] As a material for forming the antireflection layer 2, a transparent material having a refractive index lower than that of the transparent resin layer 1 is preferably used. In the present invention, the transparent resin layer 1 preferably has a refractive index of 1.45 to 1.55 and the antireflection layer 2 has a refractive index of 1.36 or less. The difference between the refractive index of the transparent resin layer 1 and the refractive index of the antireflection layer 2 is preferably 0.09 to 0.19. The thickness of the antireflection layer 2 is 10 to 500 nm, preferably 30 to 3 in order to give a sufficient antireflection effect.
00 nm, and more preferably 50 to 200 nm.

In the present invention, an amorphous fluoropolymer is preferably used as the material of the antireflection layer 2. The non-crystalline fluoropolymer is excellent in transparency because it does not scatter light due to crystals. As the non-crystalline fluoropolymer, a polymer having a fluoroaliphatic ring structure in its main chain, which is obtained by polymerizing a fluoromonomer having an alicyclic structure, or two or more polymerizable bipolymers A polymer having a fluorine-containing alicyclic structure in its main chain, which is obtained by cyclopolymerizing a fluorine-containing monomer having a heavy bond, is preferable.

Having a fluorine-containing alicyclic structure in the main chain means that at least one of the carbon atoms forming the aliphatic ring is a carbon atom in the carbon chain forming the main chain and also forming an aliphatic ring. It has a structure in which a fluorine atom or a fluorine-containing group is bonded to at least a part of carbon atoms.

A polymer having a fluorine-containing aliphatic ring structure in its main chain, which is obtained by polymerizing a monomer having a fluorine-containing ring structure, is known from Japanese Patent Publication No. 63-18964. That is, perfluoro (2,2-dimethyl-
1,3-dioxole) and other homopolymers of a monomer having a fluorinated alicyclic structure, or copolymers of the monomer and a radical-polymerizable monomer such as tetrafluoroethylene.

A polymer having a fluorinated alicyclic structure in its main chain, which is obtained by cyclopolymerization of a fluorinated monomer having two or more polymerizable double bonds, is disclosed in JP-A-63-2381.
No. 11 and Japanese Patent Laid-Open No. 63-238115. That is, perfluoro (allyl vinyl ether) and perfluoro (butenyl vinyl ether)
Such as a cyclized polymer of a fluorine-containing monomer having two or more polymerizable double bonds, or a copolymer of a fluorine-containing monomer having two or more polymerizable double bonds and a radical polymerizable monomer such as tetrafluoroethylene Polymers may be mentioned. Alternatively, a monomer having a fluorinated alicyclic structure such as perfluoro (2,2-dimethyl-1,3-dioxole) and two or more polymerizations of perfluoro (allyl vinyl ether) or perfluoro (butenyl vinyl ether) It may be a polymer obtained by copolymerizing a fluorine-containing monomer having a polymerizable double bond.

The polymer having a fluorinated alicyclic structure is
A polymer having a fluorinated alicyclic structure in its main chain is preferable, but a polymer containing 20 mol% or more of monomer units having a fluorinated alicyclic structure in the monomer units forming the polymer is transparent, It is preferable in terms of mechanical properties.

The polymer having a fluorinated alicyclic structure is
It is preferable that the terminal has a reactive group that chemically bonds or anchors with the material of the lower layer of the antireflection layer. Examples of such a reactive group include a hydroxyl group, a carboxylic acid group, an amino group, an epoxy group, an acryloyl group, a methacryloyl group,
Examples thereof include an isocyanate group, a cyano group, a carbamoyl group, a mercapto group and a vinyl group.

The above-mentioned polymer having a fluorine-containing alicyclic structure in its main chain is commercially available from Asahi Glass Co., Ltd. under the trade name of "CYTOP". In the present invention, such a known fluorine-containing polymer is used. Either can be used. In the present invention, in order to enhance the adhesion between the transparent resin layer 1 and the antireflection layer 2, 1) an adhesive layer is provided between the layers, or 2) an additive for strengthening the adhesion is added to the antireflection layer 2. Can be added. In the above 1), the optical film 10 of the present invention.
The thickness of the adhesive layer is preferably 1 to 50 nm from the viewpoint of not adversely affecting the optical characteristics of
In the above 2), for the same reason, the addition amount of the additive is preferably 50 parts by mass or less based on 100 parts by mass of the amorphous fluoropolymer forming the antireflection layer 2. Examples of the material constituting the adhesive layer and the additive include the following alkoxysilanes, which may be used alone or in combination of two or more.

Monoalkoxysilanes such as vinyltriethoxysilane, trimethylmethoxysilane, trimethylethoxysilane, dimethylvinylmethoxysilane and dimethylvinylethoxysilane. γ-chloropropylmethyldimethoxysilane, γ-chloropropylmethyldiethoxysilane, γ-aminopropylmethyldiethoxysilane, γ-aminopropylmethyldimethoxysilane, N-
β- (aminoethyl) -γ-aminopropylmethyldimethoxysilane, N-β- (aminoethyl) -γ-aminopropylmethyldiethoxysilane, γ-glycidyloxypropylmethyldimethoxysilane, γ-glycidyloxypropylmethyldiethoxy Silane, γ-methacryloxypropylmethyldimethoxysilane, methyldimethoxysilane, methyldiethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, methylvinyldimethoxysilane, methylvinyldiethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, 3 , 3,3-trifluoropropylmethyldimethoxysilane, 3,3,4,4,5,5,6,6,7,7,
8,8,8-tridecafluorooctylmethyldimethoxysilane, 3,3,4,4,5,5,6,6,7,7,
Dialkoxysilanes such as 8,8,9,9,10,10,10-heptadecafluorodecylmethyldimethoxysilane. γ-aminopropyltrimethoxysilane, γ-
Aminopropyltriethoxysilane, N-β- (aminoethyl) -γ-aminopropyltrimethoxysilane, N
-Β- (aminoethyl) -γ-aminopropyltriethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-glycidyloxypropyltrimethoxysilane, γ-glycidyloxypropyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane ,
γ-chloropropyltrimethoxysilane, methyltriethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, 3,3,3-trifluoropropyltrimethoxysilane, 3,3,4,4,5,5,6,6.
6,7,7,8,8,8-tridecafluorooctyltrimethoxysilane, 3,3,4,4,5,5,6,6,6
Tri- or tetraalkoxysilanes such as 7,7,8,8,9,9,10,10,10-heptadecafluorodecyltrimethoxysilane, tetramethoxysilane, and tetraethoxysilane.

In particular, the following may be mentioned as examples of improving the adhesiveness to the transparent resin layer 1 without impairing the transparency of the antireflection layer 2. γ-aminopropyltriethoxysilane, γ-aminopropylmethyldiethoxysilane, γ-aminopropyltrimethoxysilane, γ-
Aminopropylmethyldimethoxysilane, N-β- (aminoethyl) -γ-aminopropyltrimethoxysilane, N-β- (aminoethyl) -γ-aminopropylmethyldimethoxysilane, N-β- (aminoethyl) -γ
-Aminopropyltriethoxysilane, N-β- (aminoethyl) -γ-aminopropylmethyldiethoxysilane. Γ-glycidyloxypropyltrimethoxysilane, γ-glycidyloxypropylmethyldimethoxysilane, γ-glycidyloxypropyltriethoxysilane, and γ-glycidyloxypropylmethyldiethoxysilane having an epoxy group.

On the surface of the antireflection layer 2 serving as the outermost layer, a lubricant for imparting abrasion resistance is applied to an extent that does not impair the antireflection performance, or a lubricant is added to the antireflection layer 2. You may mix it. Examples of such a lubricant include DuPont's trade name Craytox, Daikin's trade name Demnam, Daikin's trade name Daifloyl, and Ausimont's trade name Fomblin,
Examples include perfluoropolyethers such as Freon Lube manufactured by Asahi Glass Co., Ltd.

The method of forming the antireflection layer 2 is not particularly limited,
Any forming method can be selected. For example, a polymer having a fluorinated alicyclic structure is perfluorooctane, CF _{3
(CF 2) n CH = CH} 2 (n is an integer of 5 to 11), CF ₃
(CF ₂ ) _m CH ₂ CH ₃ (m is an integer of 5 to 11), soluble in a fluorine-based solvent such as a fluorine-containing ether, and easily prepared by applying a solution of this polymer by an appropriate coating method. Can be applied to a predetermined film thickness.

[Color Tone Correction Layer] In the present invention, the color tone correction layer 3 contains at least a dye having a color tone correcting performance, and may further contain a dye having a near infrared absorbing ability. The pigment may be either a dye or a pigment. The thickness of the color tone correction layer 3 is preferably 0.1 to 50 μm, more preferably 0.1 to 20 μm in order to provide a sufficient optical correction effect.

The color tone correction layer 3 is preferably composed of a solvent-soluble thermoplastic resin as a main component and a material having a color tone correction capability added to the main component, or a dye having a near infrared absorption capability in the main component. It is formed of a material to which a dye having a color tone correction performance is added. Examples of the thermoplastic resin that is the main component of the color tone correction layer 3 include polyester resin,
Olefin resin, polyurethane resin, etc. can be used.

The dye having the color tone correction performance is used to selectively absorb a specific wavelength band of visible light and improve the color tone of transmitted visible light depending on the intended use of the optical film 10. As a dye having such a color tone correction performance, a dye having a narrow absorption band in the visible light band and a high transmittance in the other wavelength bands is preferable. As a specific example,
Azo, condensed azo, diimmonium, phthalocyanine, anthraquinone, indigo, perinone, perylene, dioxazine, quinacridone, methine, isoindolinone, quinophthalone, pyrrole, thioindigo, metal Well-known organic pigments, organic dyes, and inorganic pigments such as complex pigments can be used. A dye having good weather resistance and good compatibility or dispersibility with the main agent of the color tone correction layer 3, for example, one or more of diimmonium dye, phthalocyanine dye, and anthraquinone dye are used in combination. be able to.

As the dye having near infrared absorption ability,
Examples thereof include polymethine-based, phthalocyanine-based, metal complex-based, aminium-based, immonium-based, diimonium-based, anthraquinone-based, dithiol metal complex-based, naphthoquinone-based, indolephenol-based, azo-based, and triallylmethane-based compounds. However, it is not limited to these. For heat ray absorption and noise prevention of electronic devices, a near infrared absorber having a maximum absorption wavelength of 750 to 1100 nm is preferable, and a metal complex type, aminium type, and diimonium type are particularly preferable. The near infrared absorber may be used alone or in combination of two or more.

The optical film 10 is used as an image display device, especially P
When applied as a film material for antireflection and optical correction for DP, the PDP is used as the color tone correction layer 3.
An extra emission color (mainly 560 to 61) from the discharge gas enclosed in the main body, for example, the binary gas of neon and xenon.
It is preferable to contain one or more kinds of dyes for selectively absorbing and attenuating the wavelength region (0 nm). With such a dye configuration, in the color tone correction layer 3, extra light due to the emission of the discharge gas is absorbed and absorbed in the visible light emitted from the display screen of the PDP.
Since the light is attenuated, the display color of visible light emitted from the display screen of the PDP can be brought close to the target color, and a PDP device capable of displaying a natural color tone can be provided. Furthermore, by incorporating a dye having a near-infrared absorbing property into the color-tone correction layer 3, the near-infrared rays emitted from the display screen of the PDP are absorbed by the color-tone correction layer 3 and noise to the electronic device can be prevented.

From the viewpoint of providing a sufficient optical correction function, the total amount of the dyes added to the color tone correction layer 3 is 0.1% by mass or more based on the thermoplastic resin which is the main component of the color tone correction layer 3. From the viewpoint of ensuring the durability and weather resistance of the dye, it is preferably 20% by mass or less in total with respect to the thermoplastic resin which is the main component of the color tone correction layer 3. More preferably, it is 0.1 to 10 mass%.

Examples of the solvent for dissolving the thermoplastic resin as the main component include ketone solvents such as cyclopentanone and cyclohexanone, ether solvents, ester solvents such as butyl acetate, and ether alcohols such as ethyl cellosolve. A system solvent, a ketone alcohol solvent such as diacetone alcohol, an aromatic solvent such as toluene, and the like can be used. These may be used alone or as a mixed solvent system in which two or more kinds are mixed.

The method for forming the color tone correction layer 3 is not particularly limited, and for example, a coating liquid obtained by dissolving the main agent and the dye in a solvent is applied onto a substrate and dried to form the color tone correction layer 3 having a desired film thickness. You may form. As the coating method, for example, a dip coating method, a roll coating method, a spray coating method, a gravure coating method, a comma coating method, a die coating method or the like can be selected. These coating methods are capable of continuous processing and are superior in productivity as compared with batch-type vapor deposition methods and the like. Alternatively, a spin coating method capable of forming a thin and uniform coating film may be adopted.

[Method of Forming Optical Film] The optical film 10 of the present embodiment has a color tone correction layer 3, a transparent resin layer 1 and an antireflection layer 2 which are sequentially laminated on a transparent substrate (not shown). , The optical film 1 integrated with the transparent substrate
It may be 0. In addition, the transparent resin layer 1 and the antireflection layer 2 are sequentially laminated on one surface of the transparent base material, and the color tone correction layer 3 is formed on the opposite surface of the transparent base material to form a transparent base material. The optical film 10 may be integrated. In this case, the color tone correction layer 3 may be formed first, and then the transparent resin layer 1 and the antireflection layer 2 may be sequentially laminated on the opposite surface of the transparent substrate. As the transparent substrate, a film or sheet which is transparent and does not impair the optical characteristics is preferable. Examples of the transparent substrate include polyethylene terephthalate film, polycarbonate film, polymethylmethacrylate film, triacetylcellulose film, glass sheet and the like. Alternatively, after the color tone correction layer 3, the transparent resin layer 1, and the antireflection layer 2 are sequentially laminated on a suitable base material, preferably a releasable base material, the optical film 10 composed of these three layers is formed from the base material. It may be peeled off.

Further, in order to strengthen the adhesion between the transparent resin layer 1 and the antireflection layer 2, the surface of the transparent resin layer 1 is subjected to an activity such as corona discharge treatment or ultraviolet treatment prior to the formation of the antireflection layer 2. Energy ray treatment or treatment with a primer is effective.

[Use of Optical Film] Optical Film 10
Can be used as a film-shaped optical article itself, but may be used by being attached to a display screen as a component of an image display device. Moreover, you may stick and use it on a display screen as a component of the touch panel for image display apparatuses. Furthermore, the optical film 10 may be used alone or laminated with another transparent substrate to form an optical filter for an image display device. As an image display device,
For example, PDP, cathode ray tube (CRT), visual display terminal (VDT), liquid crystal display (LC
D), a light emission display (LED), an electrochromic display (ECD), an electroluminescence panel, a projection display and the like. Further, it may be used by being attached to another film-like optical article, or may be used by being attached to a window material. Polarizing film as other film-like optical articles,
Examples thereof include a light diffusion film, a retardation film, a Fresnel lens film, a prism lens film and a lenticular film. Examples of the window material include building window materials and vehicle window materials. The method of attaching the optical film 10 to these various optical articles is not particularly limited, and a method such as adhesion, adhesion or heat fusion can be selected. An adhesive layer may be provided in advance on the color tone correction layer 3 of the optical film 10 or, in the case where a transparent base material (not shown) is integrated with the color tone correction layer 3, the transparent base material.

When the optical film 10 is applied to an optical filter for an image display device, the antireflection layer 2 prevents external light from being reflected on the display screen, and improves brightness, contrast, and other effects. . Further, the color tone correction layer 3 can block near infrared rays emitted from the display screen or can perform color tone correction of visible light to improve image quality. Further, it can contribute to the improvement of the strength of the display screen and the prevention of scattering. In particular, the optical film 10 is advantageous in terms of cost because the deterioration of the dye during the manufacturing process is suppressed, the accuracy of the optical correction is good, and the productivity is good.

When the optical film 10 is applied to a touch panel for an image display device, an antireflection function, a color changing function of visible light, a near infrared ray absorbing function, a display screen protecting effect and the like can be obtained. Since it has self-healing property and has relatively high flexibility and elasticity, a touch panel using the touch panel has a good feel when inputting with a fingertip or a pen. Further, when the optical film 10 is applied to various window materials for construction or vehicles, the window material can be provided with an antireflection function, a visible light color tone changing function, a near infrared ray absorbing function and the like.

[Other Preferred Embodiments] It is more excellent to provide an intermediate layer (not shown) having a refractive index higher than that of the transparent resin layer 1 between the transparent resin layer 1 and the antireflection layer 2. An antireflection effect can be obtained.

The refractive index of this intermediate layer is 1.55 to 1.65.
Is preferred. The difference in refractive index between the intermediate layer and the antireflection layer 2 is preferably 0.19 to 0.29. The difference in refractive index between the intermediate layer and the transparent resin layer 1 is 0.01 to
0.2 is preferable and 0.01 to 0.1 is more preferable.
The thickness of the intermediate layer is preferably 50 nm or more in order to sufficiently obtain the effect of improving the antireflection property by providing the intermediate layer, and the transparent resin layer having the self-repairing property under the antireflection layer 2 is preferable. In order to sufficiently obtain the effect of improving scratch resistance of the antireflection layer 2 by providing 1
It is preferably m or less. It is particularly preferably 300 nm or less.

The intermediate layer is made of a resin having a refractive index higher than that of the transparent resin layer, a metal oxide layer having a refractive index higher than that of the transparent resin layer, or a transparent resin layer having a refractive index higher than that of the transparent resin layer. Layers containing metal oxides having a high refractive index are preferred.

Resins having a high refractive index include polystyrene, poly (2-chlorostyrene) and poly (2,6-
Dichlorostyrene), poly (2-bromostyrene), poly (2,6-dibromostyrene), polycarbonate,
Aromatic polyester, polysulfone, polyether sulfone, polyaryl sulfone, poly (pentabromophenyl methacrylate), phenoxy resin and its bromide, epoxy resin and its bromide, etc., which contain an aromatic ring in the main chain or side chain, Polymers having elements such as bromine and sulfur are preferably used. Further, by changing the terminal of these resins to a functional group having high reactivity, the adhesiveness to the transparent resin layer 1 and the antireflection layer 2 can be enhanced. Among the above-mentioned resins, phenoxy resin, epoxy resin and the like are preferable since they are unmodified and already have an active functional group at the terminal and have an adhesive property.

As the metal oxide, in particular, when a metal oxide having conductivity is used, the intermediate layer becomes conductive, so that the optical film 10 can be provided with an antistatic property. To obtain antistatic performance, the metal oxide preferably has a specific resistance of 1 × 10 ⁻⁷ to 1 × 10 ³ Ω · m.

Specific examples of the metal oxide include Sb ₂ O ₅ and
SnO ₂ , In ₂ O ₃ , TiO ₂ , RuO ₂ , Yb ₂ O ₃ , A
g ₂ O, CuO, FeO, and the like. Sb ₂ O ₅ , SnO ₂ , In ₂ O ₃ are particularly preferable because of their excellent transparency and film-forming property.
Is preferred. Further, it may be a layer formed of an oxide of an alloy of a metal oxide and a metal such as Sb or Al. In this case, conductivity is further enhanced, which is preferable.

Further, in order to improve the film-forming property, a resin having a high refractive index as described above or a resin for a transparent base material as described above is mixed with a layer made of a metal oxide, and an epoxy is used to provide adhesion. A compound having a functional group that effectively functions for chemical bonding, such as a group, an amino group, and a hydroxyl group, can be added.

As a method for forming the intermediate layer, an organic solvent solution of a resin having a refractive index higher than that of the transparent resin layer 1 is used because the film forming cost is low, the coatability is excellent, and stable production is possible. It is preferable that the transparent resin layer 1 is coated by the same method as the coating method used for forming the transparent resin layer 1 described above. Further, in order to enhance the adhesion between the transparent resin layer 1 and the intermediate layer, it is effective to previously subject the surface of the transparent resin layer 1 to active energy ray treatment such as corona discharge treatment or ultraviolet treatment, or to treat with a primer. Is.

[0061]

EXAMPLES The effects of the present invention will be clarified below with reference to specific examples. (Example 1) (a) Formation of color tone correction layer A colored liquid A as a material of the color tone correction layer was prepared as follows. That is, an optical polyester resin (O-PET (trade name) manufactured by Kanebo Co., Ltd.) was used as a main component, and this was dissolved in cyclopentanone to a resin concentration of 10%,
A main agent solution for the color tone correction layer was obtained. Red dye (Waxline Red manufactured by Avicia Co., Ltd.
MP-FW (trade name)) 0.063 g and blue dye (Avicia Co., Waxline Blue AP-FW (trade name)) 0.0729 g were added, and the mixture was stirred until the dye was completely dissolved, and the coloring liquid A was added. Got This colored liquid A was applied onto a transparent substrate made of a polyethylene terephthalate film having a thickness of 100 μm with a bar coater to give a dried film having a thickness of
After coating so as to have a thickness of μm, the solvent was distilled off by passing through an oven whose temperature was adjusted to 120 ° C. for 2 minutes to form a color tone correction layer.

(B) Formation of transparent resin layer A resin liquid B as a material for the transparent resin layer was prepared as follows. That is, 70 parts by mass of non-yellowing type urethane acrylate (manufactured by Kyoeisha Chemical Co., Ltd., UF-8001 (trade name)), 30 parts by mass of tripropylene glycol diacrylate (manufactured by Toagosei Co., Ltd., Aronix M220 (trade name)), and benzophenone 3 parts by mass were mixed to obtain a uniform resin liquid B. On the color correction layer formed in (a) above, the resin liquid B was applied with a bar coater, and the high pressure mercury lamp (120 m
Ultraviolet irradiation of 600 mj / cm ² was performed at W / cm ² , the distance from the light source to the irradiation surface of 150 mm, and the line speed of 2.5 m / min) to form a transparent resin layer having a tack-free thickness of 0.2 mm.

(C) Formation of Intermediate Layer and Antireflection Layer The surface layer of the transparent resin layer formed in (B) above was subjected to corona discharge treatment, and then brominated phenoxy resin (Phenotote YPB-43C (manufactured by Toto Kasei Co., Ltd.) (Trade name), molecular weight 60,000, refractive index 1.63) diluted with cyclohexanone to 2%, spin coating method (coating condition: 500 rpm x
The intermediate layer (refractive index: 1.60, film thickness about 100 nm) was formed by coating for 10 seconds + 3000 rpm × 20 seconds. Then, a solution of an amorphous fluoropolymer (made by Asahi Glass Co., Ltd., CTL-805A (trade name)) was used as a solvent (made by Asahi Glass Co., Ltd.,
The solution diluted to 2% with CT-SOLV180 (trade name) was spin-coated (coating condition: 500 rpm ×).
10 seconds + 3000 rpm × 20 seconds),
The solvent is distilled off by heating at 140 ° C for 10 minutes, and the thickness is about 1
An antireflection layer having a thickness of 00 nm was formed to obtain an optical film.

Example 2 An optical film was manufactured by changing the photo-curable resin forming the transparent resin layer in Example 1 above. First, a color tone correction layer was formed in the same manner as in (a) of Example 1 above. Next, in order to form a transparent resin layer, non-yellowing type urethane acrylate (manufactured by Kyoeisha Chemical Co.,
UF-503LN (trade name)) 50 parts by mass, tripropylene glycol diacrylate (Toagosei Co., Ltd., Aronix M220 (trade name)) 50 parts by mass, and benzophenone 3 parts by mass are mixed to obtain a uniform resin liquid C. Got The resin liquid C was applied onto the color tone correction layer formed previously by a bar coater, and the ultraviolet irradiation was performed under the same conditions as in (B) of Example 1 to obtain a tack-free transparent resin layer having a thickness of 0.2 mm. Was formed. An antireflection layer was formed on this transparent resin layer in the same manner as in (c) of Example 1 to obtain an optical film.

Example 3 An optical film was manufactured by changing the photocurable resin forming the transparent resin layer in Example 1 to one having a different curing shrinkage. First, a color tone correction layer was formed in the same manner as in (a) of Example 1 above. Next, in order to form a transparent resin layer, CH ₂ ═CHOCH ₂ CH
(OH) CH ₂ O (CH ₂ ) ₆ OCH ₂ CH (OH) CH ₂
OCH = CH ₂ (Nippon Kayaku Co., Ltd., KAYARAD R-1
67 (trade name)) 80 parts by mass, and CH ₂ = CHCO (O
E) _n OφCH ₂ φO (EO) _m COCH = CH ₂ [E is 1,2-ethylene group, φ is 1,4-phenylene group, n +
m = 4] (manufactured by Nippon Kayaku Co., Ltd., KAYARAD R-712
(Brand name) 20 parts by mass and 3 parts by mass of benzophenone were mixed to obtain a uniform resin liquid D. The resin liquid D was applied on the color tone correction layer formed previously by a bar coater, and
Ultraviolet irradiation was performed under the same conditions as in (b) above to form a tack-free transparent resin layer having a thickness of 0.2 mm. An antireflection layer was formed on this transparent resin layer in the same manner as in (c) of Example 1 to obtain an optical film.

Example 4 An optical film was manufactured in the same manner as in Example 1 except that the stacking order was changed. First, a resin liquid B was obtained in the same manner as in (B) of Example 1 above. This resin liquid B was applied on a transparent base material made of a polyethylene terephthalate film having a thickness of 100 μm by a bar coater, and was irradiated with ultraviolet rays under the same conditions as in (b) of Example 1 to obtain a tack-free thickness of 0. A transparent resin layer of 0.2 mm was formed. An intermediate layer and an antireflection layer were formed on this transparent resin layer in the same manner as in (c) of Example 1 above. On the surface of the transparent substrate made of a polyethylene terephthalate film opposite to the surface on which the transparent resin layer was previously formed, a color tone correction layer was formed in the same manner as in (a) of Example 1 above, I got a film.

Example 5 An optical film was manufactured by changing the method of forming the transparent resin layer in Example 1 above.
First, a color tone correction layer was formed in the same manner as in (a) of Example 1 above. The resin liquid B prepared under the same conditions as in (B) of Example 1 was applied onto this color tone correction layer with a bar coater. A polyethylene terephthalate film (thickness 10) which is different from the transparent substrate and whose one surface is not subjected to easy adhesion treatment
0 μm) cover material is prepared, and a laminator consisting of two rolls installed at intervals of 400 μm is used so that the surface of the cover material that has not been easily adhered is brought into close contact with the resin liquid B coated surface. Laminated to. Then
Through the cover material, a high pressure mercury lamp (120 mW / cm ² ,
Distance from light source to processing surface 150 mm, line speed 2.
The cover material was peeled off by irradiating with ultraviolet rays of 700 mj / cm ² at 0 m / min). As a result, a 0.2 mm thick transparent resin layer having no tack and high smoothness was formed on the color tone correction layer. Then, an antireflection layer was formed on the transparent resin layer in the same manner as in (c) of Example 1 to obtain an optical film.

Example 6 An optical film was manufactured by changing the method of forming the transparent resin layer in Example 4 described above.
First, a resin liquid B was obtained in the same manner as in (B) of Example 1 above. This resin liquid B was applied on a transparent base material made of a polyethylene terephthalate film having a thickness of 100 μm with a bar coater. Separately from the transparent substrate, a cover material made of a polyethylene terephthalate film (thickness 100 μm) on one surface of which is not subjected to easy adhesion treatment is prepared.
Using a laminator composed of two rolls arranged at an interval of 0 μm, the cover material was laminated so that the surface not subjected to the easy adhesion treatment was in close contact with the coating surface of the resin liquid B. Then, through the cover material, a high pressure mercury lamp (120 m
The cover material was peeled off by irradiating with ultraviolet rays of 700 mj / cm ² at W / cm ² , a distance from the light source to the treated surface of 150 mm, and a line speed of 2.0 m / min). As a result, on the transparent substrate, there is no tack and high smoothness 0.2 mm thick
Transparent resin layer was formed. An intermediate layer and an antireflection layer were formed on this transparent resin layer in the same manner as in (c) of Example 1 above. On the surface of the transparent substrate made of a polyethylene terephthalate film opposite to the surface on which the transparent resin layer was previously formed, a color tone correction layer was formed in the same manner as in (a) of Example 1 above, I got a film.

Comparative Example 1 An optical film was prepared in the same manner as in Example 1 except that the color tone correction layer was not provided and the transparent resin layer made of a photocurable resin having a self-repairing property contained a dye. First, 70 parts by mass of non-yellowing urethane acrylate (manufactured by Kyoeisha Chemical Co., Ltd., UF-8001 (trade name)) and 30 parts by mass of tripropylene glycol diacrylate (manufactured by Toagosei Co., Ltd., Aronix M220 (trade name)) are mixed. To obtain a uniform resin liquid. Add resin component 1 to this resin liquid.
Red dye (made by Avicia, RED
6 parts by mass of MP-FW (trade name), 7 parts by mass of blue dye (manufactured by Avicia, Blue AP-FW (trade name)), and 3 parts by mass of benzophenone were added and mixed, and photocuring was performed. Resin solution E was obtained. This colored photocurable resin liquid E
On a transparent substrate made of a polyethylene terephthalate film having a thickness of 100 μm by a bar coater,
When UV irradiation was performed under the same conditions as in (B) of Example 1, tacking occurred in the colored transparent resin layer and curing was insufficient. Therefore, 600 mj / cm
UV irradiation of ² is performed, and the thickness is 0.2 mm without tack.
The colored transparent resin layer of was formed. An antireflection layer was formed on the colored transparent resin layer in the same manner as in (c) of Example 1 to obtain an optical film.

(Comparative Example 2) In Example 1, the material of the transparent resin layer was changed from a photo-curable resin having self-repairing property to a thermosetting urethane resin having self-repairing property to prepare an optical film. . That is, (a) of the first embodiment
After the color tone correction layer was formed in the same manner as above, a transparent resin layer made of a thermosetting polyurethane resin was formed by the following method.
First, the blends having the blending ratios shown in Table 1 below were heated and melted at 80 ° C. for 3 hours, and mixed with stirring to obtain a uniform liquid I. Separately, the compounding ratios shown in Table 2 below were applied at 80 ° C for 3 times.
It was heated and melted for a period of time, and mixed with stirring to obtain a uniform liquid II. This liquid I and liquid II were mixed at a mass ratio of 40:60. Then, the mixture of the liquid I and the liquid II was applied on the color-correction layer previously formed by a bar coater, and the mixture was passed through an oven whose temperature was adjusted to 120 ° C. for 10 minutes to allow the reaction between the liquid I and the liquid II. Finished. Then, it was cured in an oven whose temperature was controlled at 60 ° C. for 15 hours to form a transparent resin layer having a thickness of 0.2 mm. An antireflection layer was formed on this transparent resin layer in the same manner as in (c) of Example 1 to obtain an optical film.

[0071]

[Table 1]

In Table 1, * 1 BYK-300 manufactured by Big Chemie Japan Co., Ltd.
(Product name) * 2 IRGANOX 1010 manufactured by Ciba-Geigy
(Brand name) * 3 Ciba Geigy, TINUVIN 328 (Brand name) * 4 Asahi Denka, MARK LA-77 (Brand name)

[0073]

[Table 2]

(Evaluation of Optical Film) With respect to the optical films obtained in the above examples, the degree of increase in haze value was measured in order to evaluate scratch resistance. The haze value increase degree is used as an index of scratch resistance, and is "500 ° C using a CS-10F as an abrasion wheel in an environment of 23 ° C and 50% relative humidity.
It is the value (%) of (haze value after abrasion test-haze value before abrasion test) after 100 rotations in the Taber abrasion test under a load of g. In the optical film, there is no problem if the degree of increase in haze value is 3% or less. The measurement results of the haze value increase degree are shown in Table 3 below. The haze value was measured at four points on the wear cycle orbit, and the average value was calculated.

With respect to the optical films obtained in the above respective examples, deterioration of the dye was evaluated by the following method. Immediately after forming the color tone correction layer and immediately after forming the transparent resin layer, the transmission spectra were measured with a spectrophotometer to determine the difference in transmittance. The greater the deterioration of the dye due to ultraviolet irradiation, the greater the difference in transmittance. The results are shown in Table 3 below. In each of the above examples, the density of the transparent resin layer was measured before and after the transparent resin layer was cured, and the curing shrinkage rate was calculated. The results are shown in Table 3 below. Furthermore, in each of the above examples, the degree of self-repair of the transparent resin layer was measured. The measurement results are shown in Table 3 below.

Table 3 below also shows the reflectance of the optical film obtained in each of the above examples and the ultraviolet ray irradiation amount (UV irradiation amount) at the time of forming the transparent resin layer.

[0077]

[Table 3]

As shown in Table 3, the reflectance and scratch resistance of the optical film were good in all examples. In Comparative Example 1, it was necessary to irradiate a large amount of ultraviolet rays to cure the transparent resin layer, and the deterioration of the dye was remarkable. Further, in Comparative Example 2 using the thermosetting urethane resin, not only a very long time was required to form the transparent resin layer, but also the deterioration of the dye was large.

[0079]

As described above, according to the present invention,
An optical film having an antireflection function and an optical correction function such as absorption of near infrared rays and color tone correction of visible light can be obtained with high productivity.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part schematically showing an example of an optical film of the present invention.

[Explanation of symbols]

1 ... Transparent resin layer, 2 ... Antireflection layer, 3 ... Color correction layer, 10 ... Optical film.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ken Moriwaki             Asahi Glass Co., Ltd. 10 Goi Coast, Ichihara City, Chiba Prefecture             In the company F-term (reference) 2H048 CA04 CA12 CA15 CA23 CA24                 2K009 AA02 CC03 CC26 DD02                 4F100 AA17D AK01A AK01D AK17B                       AK17K AL01B AR00B AR00C                       BA03 BA04 BA07 BA10B                       BA10C BA26 GB41 JA03                       JA12B JB14A JD10 JD10C                       JK14 JL10C JN01A JN06                       JN06B JN08 JN18A JN18D

Claims (10)

[Claims] 1. A transparent resin layer (1) made of a photocurable resin having a self-repairing property, an antireflection layer (2) present on one side of the transparent resin layer (1), and the transparent resin layer (1). 2. An optical film comprising a color tone correction layer (3) containing a dye having color tone correction performance, which is present on the side opposite to the antireflection layer (2). 2. The optical film according to claim 1, wherein the color tone correction layer (3) further contains a dye having a near infrared absorbing property. 3. The optical film according to claim 1, wherein the antireflection layer (2) is made of a non-crystalline fluoropolymer. 4. The optical film according to claim 3, wherein the amorphous fluoropolymer is a polymer having a fluoroaliphatic ring structure. 5. The intermediate layer having a refractive index higher than that of the transparent resin layer (1) is present between the transparent resin layer (1) and the antireflection layer (2). The optical film described. 6. The intermediate layer comprises a resin layer having a refractive index higher than that of the transparent resin layer, a metal oxide layer having a refractive index higher than that of the transparent resin layer, and a transparent layer. The optical film according to claim 5, which is any one selected from the group consisting of layers containing a metal oxide having a refractive index higher than that of the resin layer. 7. The method for producing the optical film according to claim 1, wherein the color tone correction layer (3) comprises a transparent substrate and a dye having a color tone correction performance.
A method for producing an optical film, comprising a step of forming a transparent resin layer (1) made of a photocurable resin having a self-repairing property and an antireflection layer (2) in this order. 8. A method for producing the optical film according to claim 5, wherein the color tone correction layer (3) comprises a transparent substrate and a dye having a color tone correction performance. A transparent resin layer (1) made of a photocurable resin having a self-repairing property, an intermediate layer having a refractive index higher than that of the transparent resin layer (1), and an antireflection layer (2) are laminated in this order. A method for producing an optical film, which comprises the step of: 9. A method for producing an optical film according to claim 1, wherein a transparent resin layer made of a photocurable resin having self-repairing property is provided on one surface of the transparent substrate ( 1) and a step of laminating the antireflection layer (2) in this order, and a step of forming a color tone correction layer (3) containing a dye having a color tone correction performance on the surface opposite to the transparent substrate. A method for producing an optical film, which comprises: 10. The method for producing an optical film according to claim 5, wherein a transparent resin layer made of a photocurable resin having self-repairing property is provided on one surface of the transparent substrate. 1), a step of laminating an intermediate layer having a refractive index higher than that of the transparent resin layer (1), and an antireflection layer (2) in this order, and color tone correction performance on the opposite surface of the transparent substrate. A method for producing an optical film, comprising the step of forming a color tone correction layer (3) containing the dye.