JP2001215304A - Optical parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide optical parts having excellent optical characteristics and having an antireflection layer excellent in durability. SOLUTION: Optical parts having excellent optical characteristics and having an antireflection film excellent in durability can be obtained. Because the optical parts have an antireflection film having high transmittance for rays and excellent antireflection performance and durability, they can be preferably used for various use.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical component, and more particularly, to an engineering component having an anti-reflection layer having excellent durability.

[0002]

BACKGROUND ART Conventionally, various transparent plastic materials have been used as raw materials for optical components such as optical lenses, eyeglass lenses, optical disk substrates, and plastic optical fibers.

For example, an aspheric lens is manufactured from a transparent plastic material by a method such as injection molding, and is used for various purposes such as a laser beam, a camera, and a screen projection.

[0004] Polymethyl methacrylate (PMMA), polyacrylate-based copolymer, polycarbonate, norbornene-based resin and the like are known as such resin for lens by injection molding.

However, polymethyl methacrylate and polyacrylate copolymers have a relatively large water absorption, so that when they are used as optical components such as lenses,
There is a problem that the optical characteristics easily change due to moisture absorption and cannot be used for precise applications. Further, polycarbonate has a problem that birefringence is large and surface hardness is not sufficient.

On the other hand, it is known that an antireflection film, which is a dielectric multilayer film, is formed on the surface of an optical component such as a lens that transmits light. This is because, in general, in a lens in which a substrate is simply molded, incident light is partially reflected on the surface of the substrate due to the difference between the refractive index of the substrate and the refractive index of air, which is the light incident medium, Furthermore, since the light is reflected also at the interface of emission from the base material, there is a problem that reflection loss occurs. However, by providing an antireflection film on the lens surface, the reflection loss can be reduced. As an anti-reflection film formed on the surface of a plastic lens, a deposition film of a metal oxide, a metal fluoride, or the like is known.

However, when an anti-reflection film made of a metal oxide or the like is formed on the surface of a plastic lens formed from the above-described resin, the adhesion of the anti-reflection film is not sufficient, and the anti-reflection film is not peeled off from the substrate. This is problematic in that it easily occurs and durability is poor.

For this reason, it shows excellent optical characteristics and
There has been a strong demand for an optical component having an antireflection film having excellent durability. The present inventor has conducted intensive studies in view of such circumstances. As a result, a molded article made of a specific cyclic hydrocarbon-based polymer has excellent transparency, low birefringence, excellent optical properties, and excellent reflection. The present inventors have found that they have excellent adhesion to the prevention film, and have completed the present invention.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical component having an excellent anti-reflection layer having excellent optical characteristics and excellent durability.

[0010]

SUMMARY OF THE INVENTION The optical component of the present invention comprises the following (I) and (I)
An antireflection film is formed on at least a part of the surface of a molded body made of at least one kind of cyclic hydrocarbon polymer selected from the group consisting of I), (III), (IV) and (V). It is characterized by: (I) a (co) polymer of a vinyl monocyclic alicyclic hydrocarbon compound, or a copolymer of a vinyl monocyclic alicyclic hydrocarbon compound and a monomer copolymerizable therewith, or (II) a hydrogenated product of a (co) polymer of a vinyl aromatic hydrocarbon compound or a copolymer of a vinyl aromatic hydrocarbon compound and a monomer copolymerizable therewith; A hydrogenated product of a polymer, wherein at least 30% of an aromatic hydrocarbon ring is hydrogenated; (III) a (co) polymer of a monocyclic monoolefin compound, or a monocyclic cyclic compound A copolymer of a monoolefin-based compound and a monomer copolymerizable therewith; (IV) a hydrogenated product of a (co) polymer of a monocyclic conjugated diene-based compound, or a monocyclic conjugated diene-based compound Hydrogenated product of a copolymer of a compound and a monomer copolymerizable therewith; V) converting at least one cyclic hydrocarbon polymer selected from the group consisting of (I), (II), (III) and (IV) with an α, β-unsaturated carboxylic acid, an anhydride thereof, or an anhydride thereof; Modified product obtained by graft modification with a derivative.

[0011] In a preferred embodiment of the present invention,
The antireflection film is preferably a laminated film composed of a plurality of layers having different refractive indices, particularly, the antireflection film is a high refractive index layer made of a metal oxide, a metal sulfide or a metal fluoride, A laminated film composed of a low refractive index layer composed of a metal oxide or a metal fluoride, or a layer composed of silicon oxide, and a high refractive index layer composed of a metal oxide, a metal sulfide or a metal fluoride; It is desirable that the film be a laminated film composed of a low refractive index layer made of metal oxide or metal fluoride.

[0012]

DETAILED DESCRIPTION OF THE INVENTION Hereinafter, the present invention will be described specifically. Cyclic hydrocarbon polymer The cyclic hydrocarbon polymer used in the present invention is at least one kind of cyclic hydrocarbon selected from the group consisting of the following (I), (II), (III), (IV) and (V). It is a resin containing a hydrocarbon polymer. (I) a (co) polymer of a vinyl monocyclic alicyclic hydrocarbon compound, or a copolymer of a vinyl monocyclic alicyclic hydrocarbon compound and a monomer copolymerizable therewith, or (II) a hydrogenated product of a (co) polymer of a vinyl aromatic hydrocarbon compound or a copolymer of a vinyl aromatic hydrocarbon compound and a monomer copolymerizable therewith; A hydrogenated product of a polymer, wherein at least 30% of an aromatic hydrocarbon ring is hydrogenated; (III) a (co) polymer of a monocyclic monoolefin compound, or a monocyclic cyclic compound A copolymer of a monoolefin-based compound and a monomer copolymerizable therewith; (IV) a hydrogenated product of a (co) polymer of a monocyclic conjugated diene-based compound, or a monocyclic conjugated diene-based compound Hydrogenated product of a copolymer of a compound and a monomer copolymerizable therewith; V) converting at least one cyclic hydrocarbon polymer selected from the group consisting of (I), (II), (III) and (IV) with an α, β-unsaturated carboxylic acid, an anhydride thereof, or an anhydride thereof; Modified product obtained by graft modification with a derivative.

The above (I) and (I) which can be used as the cyclic hydrocarbon polymer used in the present invention.
The polymers (I), (III), (IV) and (V) will be described.

The polymer (I) is (I) a (co) polymer of a vinyl monocyclic alicyclic hydrocarbon compound or a vinyl monocyclic alicyclic hydrocarbon compound, and is copolymerizable therewith. Or a hydrogenated product thereof.

The vinyl monocyclic alicyclic hydrocarbon compound is
A compound having a structure in which a monocyclic cycloalkyl group or a monocyclic cycloalkenyl group is bonded to a vinyl group or an α-alkyl-substituted vinyl group. Here, the monocyclic cycloalkyl group and cycloalkenyl group may have a substituent such as an alkyl group.

Examples of such compounds include vinylcyclobutane, vinylcyclopentane, vinylcyclohexane, vinylcycloheptane, vinylcyclooctane, and those compounds in which the α-position of the vinyl group is substituted with an alkyl group such as methyl, ethyl, or propyl. Compounds can be exemplified. Also, 4-vinylcyclohexene, 4-isopropenylhexene, 1-methyl-4-vinylcyclohexene, 1-methyl-4-isopropenylcyclohexene,
2-methyl-4-vinylcyclohexene, 2-methyl-
Examples thereof include vinylcyclohexene derivatives such as 4-isopropenylhexene.

When the polymer (I) is a (co) polymer of a vinyl monocyclic alicyclic hydrocarbon compound, these vinyl monocyclic alicyclic hydrocarbon compounds are polymerized alone. Or a copolymer obtained by copolymerizing two or more kinds.

When the polymer (I) is a copolymer of a vinyl-based monocyclic alicyclic hydrocarbon compound and a monomer copolymerizable therewith, these vinyl-based alicyclic hydrocarbon compounds may be used. The copolymer is a copolymer obtained by combining a monocyclic alicyclic hydrocarbon compound with another compound copolymerizable with the compound within a range that does not impair the purpose of the present invention.

As the monomer copolymerizable with the vinyl monocyclic alicyclic hydrocarbon compound, any copolymerizable monomer can be used, and propylene, butene, acrylonitrile, acrylic acid, methacrylic acid, Maleic anhydride, acrylic acid ester, methacrylic acid ester, maleimide, vinyl acetate, vinyl chloride and the like can be exemplified. Among these monomers, it is preferable to use an α-olefin, and particularly, it is preferable to use a monomer such as propylene or butene because flexibility and impact resistance can be imparted. Such a monomer copolymerizable with the vinyl-based monocyclic alicyclic hydrocarbon compound is 0 to 9 based on the total amount of the monomer.
It is desirable to use 5 mol%, more preferably 0 to 90 mol%.

The polymerization method for obtaining these polymers or copolymers is not particularly limited, and may be any of known radical polymerization,
Coordination anionic polymerization (Ziegler polymerization), cationic polymerization,
A polymerization method such as anionic polymerization can be applied.

The polymer (I) may be a hydrogenated product of these polymers or copolymers. In particular, when a vinyl-based monocyclic alicyclic hydrocarbon compound used as a monomer forming these polymers or copolymers is substituted with a vinyl group or an α-alkyl-substituted vinyl group, a monocyclic (alkyl-substituted) cyclo In the case of a compound having a structure in which an alkenyl group is bonded, the above-mentioned polymer or copolymer is preferably a hydrogenated product. As such a hydrogenated product, 30% or more, preferably 60% or more, more preferably 90% or more of the optionally substituted cycloalkenyl group in the polymer or copolymer is hydrogenated. A polymer consisting of

The polymer (II) is a hydrogenated product of a (co) polymer of a vinyl aromatic hydrocarbon compound or a vinyl aromatic hydrocarbon compound and a monomer copolymerizable therewith. Which is a hydrogenated product of at least 30% of the aromatic hydrocarbon ring.

The vinyl aromatic hydrocarbon compound used as a monomer forming the polymer (II) is a compound in which an aromatic substituent is bonded to a vinyl group or an α-alkyl-substituted vinyl group. . Such compounds include styrene, α-methylstyrene, α-ethylstyrene, α
-Propylstyrene, α-isopropylstyrene, α-
t-butylstyrene, 2-methylstyrene, 3-methylstyrene, 4-methylstyrene, 2,4-diisopropylstyrene, 2,4-dimethylstyrene, 4-t-butylstyrene, 5-t-butyl-2-methylstyrene , Monochlorostyrene, dichlorostyrene, monofluorostyrene, 4-phenylstyrene, vinylnaphthalene, vinylanthracene and the like.

When the polymer (II) is a hydrogenated product of a (co) polymer of a vinyl aromatic hydrocarbon compound, such a vinyl aromatic hydrocarbon compound is polymerized alone. It may be a hydrogenated product of a polymer or a hydrogenated product of a copolymer obtained by copolymerizing two or more kinds.

In the case where the polymer (II) is a hydrogenated product of a copolymer of a vinyl aromatic hydrocarbon compound and a monomer copolymerizable therewith, It is a hydrogenated product of a copolymer in which a vinyl aromatic hydrocarbon compound and a monomer copolymerizable with the compound are copolymerized in a range that does not impair the gist of the present invention. As the monomer copolymerizable with such a vinyl aromatic hydrocarbon compound, any copolymerizable monomer can be used, and propylene, butene, acrylonitrile, acrylic acid, methacrylic acid, and maleic anhydride can be used. Acrylate, methacrylate, maleimide, vinyl acetate, vinyl chloride and the like. Among these monomers, it is preferable to use an α-olefin, and particularly, it is preferable to use a monomer such as propylene or butene because flexibility and impact resistance can be imparted. Such a monomer copolymerizable with the vinyl aromatic hydrocarbon compound is used in a proportion of 0 to 95 mol%, more preferably 0 to 90 mol%, based on the total amount of the monomers. desirable.

Such a polymer or copolymer of the above (II) can be obtained by polymerizing in the same manner as the polymer of the above (I) and hydrogenating by a known method.

As the hydrogenation method, for example, methods described in JP-A-7-247321 and US Pat. No. 5,612,422 can be exemplified. The hydrogenation rate of the aromatic hydrocarbon ring contained in the polymer (II) is 30% or more, preferably 60% or more, more preferably 90% or more.

The polymer (III) is a (co) polymer of a monocyclic monoolefin compound or a copolymer of a monocyclic monoolefin compound and a monomer copolymerizable therewith. It is.

The monocyclic monoolefin compound used as a monomer for forming the polymer (III) is a monocyclic monoolefin which may have a substituent, and may be cyclobutene or cyclopentene. , Cyclohexene,
Cyclooctene and the like can be mentioned.

When the polymer of the above (III) is a (co) polymer of a monocyclic monoolefin compound, it is a polymer obtained by polymerizing such a monocyclic monoolefin compound alone. Alternatively, a polymer obtained by copolymerizing two or more kinds may be used.

In the case where the polymer (III) is a copolymer of a monocyclic monoolefin compound and a monomer copolymerizable therewith, the above monocyclic monoolefin may be used. The copolymer is a copolymer in which a system compound and another compound copolymerizable with the compound are combined in a range that does not impair the purpose of the present invention.

As the monomer copolymerizable with the monocyclic monoolefin compound, any copolymerizable monomer can be used, and ethylene, propylene, butene,
Examples thereof include acrylonitrile, acrylic acid, methacrylic acid, maleic anhydride, acrylic ester, methacrylic ester, maleimide, vinyl acetate, and vinyl chloride. Such a monomer copolymerizable with the monocyclic monoolefin compound is used at a ratio of 0 to 95 mol%, more preferably 0 to 90 mol%, based on the total amount of the monomers. desirable.

The polymerization method for obtaining the polymer or copolymer of the above (III) is not particularly limited, and it can be obtained by a known method of addition-polymerizing a monomer containing a cyclic monoolefin compound. be able to.

The polymer (IV) is a hydrogenated product of a (co) polymer of a monocyclic conjugated diene compound or a monocyclic conjugated diene compound and a monomer copolymerizable therewith. Is a hydrogenated product of the copolymer

The monocyclic conjugated diene compound used as a monomer for forming the polymer (IV) is a monocyclic conjugated diene which may have a substituent, and may be cyclopentadiene, cyclopentadiene or cyclopentadiene. Hexadiene, cycloheptadiene, cyclooctadiene and the like can be mentioned.

When the polymer (IV) is a hydrogenated product of a (co) polymer of a monocyclic conjugated diene compound, such a monocyclic conjugated diene compound was polymerized alone. It may be a hydrogenated product of a polymer or a hydrogenated product of a copolymer obtained by copolymerizing two or more kinds.

In the case where the polymer (IV) is a hydrogenated product of a copolymer of a monocyclic conjugated diene compound and a monomer copolymerizable therewith, It is a hydrogenated product of a copolymer obtained by combining a monocyclic conjugated diene compound and a monomer copolymerizable with the compound in a range that does not impair the gist of the present invention.

As the monomer copolymerizable with such a monocyclic conjugated diene compound, any copolymerizable monomer can be used, and ethylene, propylene, butene, acrylonitrile, acrylic acid, Examples thereof include methacrylic acid, maleic anhydride, acrylic acid ester, methacrylic acid ester, maleimide, vinyl acetate, and vinyl chloride. Such a monomer copolymerizable with the monocyclic conjugated diene-based compound is preferably used in a ratio of 0 to 95 mol%, more preferably 0 to 90 mol%, based on the total amount of the monomers. .

Such a polymer or copolymer of the above (IV) is subjected to addition polymerization of a monomer containing the above-mentioned monocyclic conjugated diene compound by a known method, and hydrogenated by a known method. Can be obtained by:

Specifically, for example, polycyclohexadiene and a hydrogenated product thereof can be obtained by using the method disclosed in JP-A-11-106571. The hydrogenation rate of the double bond in the hydrocarbon ring contained in the polymer or copolymer of the above (IV) is 30.
% Or more, preferably 60% or more, more preferably 90%
It is desirable that this is the case.

The cyclic hydrocarbon-based polymer (I), (II), (III) or (IV) has a weight average molecular weight (Mw) determined by gel permeation chromatography (GPC) in terms of polystyrene. Usually 5,000 ~
1,000,000, preferably 10,000-50
0000, more preferably 50,000 to 300,0
00 is desirable. Also, the molecular weight distribution Mw / Mn
Is desirably 10 or less, preferably 5.0 or less, more preferably 3.0 or less, and has a glass transition temperature of 50 to 300 ° C, preferably 60 to 280 ° C, more preferably 70 to 280 ° C. It is in the range of 250 ° C., and the crystallinity is desirably 20% or less, preferably 10% or less, more preferably 5% or less. The density is 1.5
g / cm ³ or less, preferably 1.0 g / cm ³ or less, more preferably 0.95 g / cm ³ or less.

The polymer of (V) is the above (I), (II),
A modified product obtained by graft-modifying at least one cyclic hydrocarbon polymer selected from the group consisting of (III) and (IV) with an α, β-unsaturated carboxylic acid, an anhydride thereof or a derivative thereof; is there.

The polymer (V) is obtained by graft-modifying such a cyclic hydrocarbon polymer before modification with a graft monomer. As the graft monomer,
For example, α, β-unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid, fumaric acid, tetrahydrophthalic acid, itaconic acid, citraconic acid, crotonic acid and nadic acid, or acid anhydrides or derivatives thereof Can be used. As the derivative, for example,
Acid halides, amides, imides, esters and the like. Specific examples of such anhydrides or derivatives include maleenyl chloride, maleenyl imide, maleic anhydride, citraconic anhydride, monomethyl maleate, dimethyl maleate, and the like. Among these, unsaturated dicarboxylic acids or acid anhydrides thereof are preferable, and maleic acid, nadic acid or acid anhydrides thereof are particularly preferable.

In preparing the polymer (V), the graft ratio of the graft monomer is 0.00 per 1 g of the cyclic hydrocarbon polymer selected from (I) to (IV).
1 to 0.04 mg equivalent, preferably 0.005 to 0.03
Desirably, it is in the range of mg equivalent.

As the graft monomer, a modifier used in epoxy modification, for example, glycidyl methacrylate (GMA), allyl glycidyl ether, vinyl glycidyl ether, glycidyl, instead of the above-mentioned α, β-unsaturated carboxylic acid, etc. A glycidyl compound such as itaconate can also be used.

Using such a graft monomer,
In order to produce the polymer (V), various conventionally known methods can be used. As such a method, for example, a method in which a cyclic hydrocarbon-based polymer selected from the above (I) to (IV) is melted by heating and a graft monomer is added to carry out graft copolymerization, or the above-described (I) )
And a method of dissolving a cyclic hydrocarbon polymer selected from (IV) in a solvent, adding a graft monomer, and performing graft copolymerization.

The graft copolymerization reaction is preferably performed in the presence of a radical initiator because of high reaction efficiency. Examples of the radical initiator used in the graft copolymerization reaction include organic peroxides, organic peresters, and other azo compounds. Among these radical initiators, dicumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di (tert-butylperoxy) hexyne-3,
Dialkyl peroxides such as 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane and 1,4-bis (tert-butylperoxyisopropyl) benzene are preferred. Such radical initiators are described in (I) to (I) above.
It is desirable to use 0.001 to 1 part by weight based on 100 parts by weight of the cyclic hydrocarbon polymer selected from V).

Such a graft copolymerization reaction is usually carried out in 6
It is performed in a temperature range of 0 to 380 ° C. Such (V)
Has a weight average molecular weight of 10,000 to 50.
0000, preferably 20,000 to 300,
000, more preferably 50,000 to 300,000
Desirably.

In the present invention, by using such a cyclic hydrocarbon-based polymer, it is possible to obtain an optical component having excellent optical properties, good adhesion to the antireflection layer, and excellent durability. .

In the present invention, the resin forming the molded article is preferably only the above-mentioned cyclic hydrocarbon polymer, but other resins may be used as long as the properties of the cyclic hydrocarbon polymer are not impaired. May be blended. Other resins that can be blended with the resin forming the molded body include polyethylene, polypropylene, poly 1-butene,
Polyolefins such as poly-4-methyl-1-pentene; polystyrene;

In the present invention, if necessary, various additives such as an antioxidant, an ultraviolet stabilizer, an antistatic agent and a lubricant are added to the resin forming the molded article, as long as the purpose is not impaired. You may.

The molded article made of such a cyclic hydrocarbon polymer may be obtained by molding by any method, for example, a known method such as injection molding, melt extrusion, hot pressing, solvent casting, or inflation. Can be molded.

Antireflection Film The optical component of the present invention is obtained by forming an antireflection film on at least a part of the surface of the above-mentioned molded article made of a cyclic hydrocarbon polymer.

The antireflection film in the optical component of the present invention comprises:
It is desirable that the film be capable of transmitting light having a wavelength to be transmitted depending on the application and preventing reflection of light entering or exiting the optical component and reducing the reflection loss of light of the optical component.

The antireflection film of the present invention is not particularly limited as long as it has such a function.
%, Particularly preferably 95% or more.

The antireflection film of the present invention may be formed as a single layer, but is preferably a laminated film composed of a plurality of layers having different refractive indices, since the antireflection effect is high. In the present invention, when the antireflection film is a laminated film composed of a plurality of layers having different refractive indices, the order of lamination is not particularly specified. May be a multilayer film. Such an antireflection film is preferably a laminated film having a high refractive index layer on the molded body side and a low refractive index layer on the outside.

In the present invention, the antireflection film may be a laminated film having a layer having a high refractive index as a layer (first layer) in contact with the molded article, and a layer having a low refractive index (second layer). preferable. At this time, the high refractive index layer (first layer) is made of metal oxide, metal sulfide or metal fluoride, and the low refractive index layer (second layer) is made of metal oxide, metal fluoride or silicon oxide. It is preferably an antireflection film made of

Further, in the present invention, the antireflection film is formed by forming a silicon oxide (SiO or SiO ₂ ) layer in contact with the molded body (first layer).
Layer), and then a laminated film having a layer with a high refractive index (second layer) and a layer with a low refractive index (third layer) is particularly preferred because of its high adhesion to a molded article. At this time, the high refractive index layer (second layer) is made of metal oxide, metal sulfide or metal fluoride, and the low refractive index layer (third layer) is made of metal oxide, metal fluoride or silicon oxide. It is preferable that the antireflection film is made of

As the metal oxide, metal sulfide and metal fluoride capable of forming the antireflection film, a substance which is stable in ordinary air or water is preferable. Examples of metal oxides include aluminum oxide, zirconium oxide, cerium oxide, bismuth oxide, chromium oxide, iron oxide, hafnium oxide, thallium oxide, tantalum pentoxide, iridium oxide, tungsten oxide, molybdenum oxide, lanthanum oxide, and magnesium oxide. , Samarium oxide, antimony oxide, silicon oxide, scandium oxide, tin oxide, titanium oxide, yttrium oxide, europium oxide, zinc oxide and the like.

Examples of the metal sulfide include zinc sulfide and rhodium sulfide. Examples of metal fluorides are aluminum fluoride and barium fluoride. Examples include cerium fluoride, calcium fluoride, lanthanum fluoride, lithium fluoride, magnesium fluoride, cryolite, thiolite, neodymium fluoride, sodium fluoride, lead fluoride, and strontium fluoride.

These raw materials for forming each layer of the antireflection film may be appropriately mixed and used. Such an antireflection film may be a V coat film for preventing reflection of a specific wavelength or a multi-coat film for preventing broadband reflection.

The method of forming such an antireflection film on a molded body is not particularly limited, and depends on the raw material of the film. For example, a vacuum evaporation method, a reflection evaporation method, an ion plating method , Sputtering method, ion beam assisted method and the like. When the antireflection film is a multilayer film including a plurality of layers, the antireflection film may be formed by appropriately combining these methods. Further, in the present invention, an anti-reflection film may be formed after performing an undercoat treatment with a silicone resin on the molded body.

In the optical component according to the present invention, the thickness of the antireflection film is not particularly limited.
It is preferably about 500 nm. It is desirable that the optical component according to the present invention transmits 80% or more, preferably 85% or more, particularly preferably 90% or more of light having a desired wavelength.

The optical component according to the present invention does not limit the use thereof.
It can be used for various optical lenses such as θ lens, projector lens, camera lens, video camera lens, spectacle lens, underwater spectacle lens, screen projection lens, microscope lens, prism, optical disc substrate, mirror, various filters, etc. .

[0065]

According to the present invention, it is possible to provide an optical component having an antireflection film having excellent optical characteristics and excellent durability. Since such an optical component has an antireflection film having high light transmittance, excellent antireflection performance, and excellent durability, it can be suitably used for various optical component applications.

[0066]

EXAMPLES Hereinafter, the present invention will be described more specifically based on examples, but the present invention is not limited to these examples.

[0067]

[Preparation Example 1] Preparation of cyclic hydrocarbon polymer (A) MFR: 3 g / 10 min (temperature: 200 ° C, load: 5 kg)
Is polystyrene (G590, manufactured by Nippon Polysty Co., Ltd.) 1
was dissolved in 50 liters of cyclohexane, and the stabilized nickel catalyst N163A (Nippon Chemical Industrial Co., Ltd., 40
% Nickel-supported silica-alumina support) and mixed. This was degassed, replaced with nitrogen gas, and further subjected to a hydrogenation reaction at 230 ° C. and a hydrogen pressure of 50 kg / cm ² for 10 hours.

After completion of the reaction, the catalyst was removed by filtration, and a polymer was precipitated with isopropanol. This polymer was separated by filtration and dried under reduced pressure to obtain a cyclic hydrocarbon polymer (A) which is a hydrogenated product of polystyrene.

The physical properties of the obtained hydrogenated product are as follows.
At 3 ° C., the density was 0.95 g / cm ³ , and the degree of hydrogenation was 99% or more. The crystallinity determined by X-ray diffraction was 0%.

[0070]

Example 1 Using the cyclic hydrocarbon polymer (A) obtained in Preparation Example 1, injection molding was performed at a cylinder temperature of 320 ° C. to obtain a square plate having a thickness of 3 mm.

On this square plate, TiO ₂ was vacuum-deposited to a thickness of 65 nm under a reduced pressure condition of 10 ⁻⁵ Torr to form an antireflection film, and an optical component sample was obtained. About the obtained optical component sample, the adhesiveness of the antireflection film and the light transmittance at 650 nm were evaluated. Table 1 shows the results.

The adhesion of the antireflection film was determined by measuring the optical component sample on which the antireflection film was formed at 80 ° C. and 90% relative humidity for 48 hours (condition 1) and at 90 ° C. and a relative humidity of 9
After leaving still at 96% (condition 2) at 0% for each condition, a peeling test was performed using an adhesive tape, and the film was visually evaluated.

[0073]

EXAMPLE 2 In Example 1, C was used instead of TiO _2.
An optical component sample was manufactured in the same manner as in Example 1 except that eO ₂ was used.

With respect to the obtained optical component samples, the adhesion of the antireflection film and the light transmittance at 650 nm were evaluated in the same manner as in Example 1. Table 1 shows the results.

[0075]

Example 3 Using the cyclic hydrocarbon polymer (A) obtained in Preparation Example 1, injection molding was performed at a cylinder temperature of 320 ° C. to obtain a square plate having a thickness of 3 mm.

Under the reduced pressure condition of 10 ^-5 Torr, TiO ₂ was vacuum-deposited to a thickness of 65 nm to form a first layer, and then SiO ₂ was vacuum-deposited to a thickness of 4 nm to form a second layer.
An antireflection film was formed by forming a layer, and an optical component sample was obtained.

With respect to the obtained optical component samples, the adhesion of the antireflection film and the light transmittance at 650 nm were evaluated in the same manner as in Example 1. Table 1 shows the results.

[0078]

Examples 4 to 9 Optical component samples were produced in the same manner as in Example 1, except that the compounds shown in Table 1 were used as the first layer instead of using TiO ₂ .

With respect to the obtained optical component samples, the adhesion of the antireflection film and the light transmittance at 650 nm were evaluated in the same manner as in Example 1. Table 1 shows the results.

[0080]

Comparative Example 1 In the same manner as in Example 3, except that polymethyl methacrylate (manufactured by Mitsubishi Rayon Co., Ltd., Acrypet VH) was used instead of using the cyclic hydrocarbon polymer (A). The optical component sample was manufactured.

With respect to the obtained optical component samples, the adhesion of the antireflection film and the light transmittance at 650 nm were evaluated in the same manner as in Example 1. Table 1 shows the results.

[0082]

Example 10 Using the cyclic hydrocarbon-based polymer (A) obtained in Preparation Example 1, injection molding was performed at a cylinder temperature of 320 ° C. to obtain a square plate having a thickness of 3 mm.

Under the reduced pressure of 10 ^-5 Torr, SiO ₂ was vacuum-deposited to a thickness of 4 nm to form a first layer, and then SiO ₂ was vacuum-deposited to a thickness of 65 nm to form a second layer.
To form a layer, and further vacuum deposited anti-reflection film is formed by forming a third layer of SiO ₂ to 4nm thickness, to obtain an optical component sample.

With respect to the obtained optical component samples, the adhesion of the antireflection film and the light transmittance at 650 nm were evaluated in the same manner as in Example 1. Table 1 shows the results.

[0085]

Examples 11 to 15 Optical component samples were produced in the same manner as in Example 10, except that the compounds shown in Table 1 were used as the second layer instead of using TiO ₂ .

With respect to the obtained optical component samples, the adhesion of the antireflection film and the light transmittance at 650 nm were evaluated in the same manner as in Example 1. Table 1 shows the results.

[0087]

Comparative Example 2 Instead of using the cyclic hydrocarbon polymer (A) obtained in Preparation Example 1 in Example 10, polymethyl methacrylate (Acrypet V, manufactured by Mitsubishi Rayon Co., Ltd.) was used.
An optical component sample was manufactured in the same manner as in Example 10 except that H) was used.

With respect to the obtained optical component samples, the adhesion of the antireflection film and the light transmittance at 650 nm were evaluated in the same manner as in Example 1. Table 1 shows the results.

[0089]

[Table 1]

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // C08L 57:00 G02B 1/10 A F term (Reference) 2K009 AA04 AA05 AA06 BB12 BB13 CC03 CC06 DD03 4F006 AA12 AA15 AA58 AB73 AB74 AB75 AB76 BA14 CA05 DA01 DA04 4F100 AA05B AA05C AA09B AA17B AA17C AA20C AA20D AA21B AK02A AK11A AK28A AL01A AL04A AL06A AL07A BA02 BA03 BA04 BA07 J06N06 J06N06 J26N

Claims (4)

[Claims] 1. A molded article comprising at least one cyclic hydrocarbon polymer selected from the group consisting of the following (I), (II), (III), (IV) and (V): (I) a vinyl-based monocyclic alicyclic hydrocarbon compound (co) polymer or a vinyl-based monocyclic alicyclic hydrocarbon; (II) A hydrogenated product of a (co) polymer of a vinyl aromatic hydrocarbon compound, or a hydrogenated product of a compound and a monomer copolymerizable with the compound, or a hydrogenated product thereof. (III) a hydrogenated product of a copolymer of an aromatic hydrocarbon compound and a monomer copolymerizable therewith, wherein at least 30% of the aromatic hydrocarbon ring is hydrogenated; (Co) polymer of monocyclic monoolefin compound or monocyclic monoolefin A copolymer of a fin-based compound and a monomer copolymerizable therewith; (IV) a hydrogenated product of a (co) polymer of a monocyclic conjugated diene-based compound, or a monocyclic conjugated diene-based compound And a hydrogenated product of a copolymer with a monomer copolymerizable therewith; (V) at least one kind selected from the group consisting of the above (I), (II), (III) and (IV) A modified product obtained by graft-modifying a cyclic hydrocarbon polymer with an α, β-unsaturated carboxylic acid, an anhydride thereof or a derivative thereof. 2. The optical component according to claim 1, wherein the antireflection film is a laminated film including a plurality of layers having different refractive indexes. 3. A laminated film in which an antireflection film comprises a high refractive index layer made of metal oxide, metal sulfide or metal fluoride and a low refractive index layer made of metal oxide, metal fluoride or silicon oxide. 2. The optical component according to claim 1, wherein 4. An antireflection film comprising: a layer made of silicon oxide; a high refractive index layer made of metal oxide, metal sulfide or metal fluoride; and a low refractive index made of metal oxide, metal fluoride or silicon oxide. The optical component according to claim 1, wherein the optical component is a laminated film including a rate layer.