WO2018105593A1

WO2018105593A1 - Multilayer sheet and lens

Info

Publication number: WO2018105593A1
Application number: PCT/JP2017/043598
Authority: WO
Inventors: 浩行神尾; 三浦　徹
Original assignee: 三井化学株式会社
Priority date: 2016-12-06
Filing date: 2017-12-05
Publication date: 2018-06-14
Also published as: JPWO2018105593A1

Abstract

This multilayer sheet (10) is provided with: a polarizing layer (12); and protective layers (a first protective layer (14a) and a second protective layer (14b)) which are laminated on surfaces ((12a), (12b)) of the polarizing layer (12). The first protective layer (14a) and the second protective layer (14b) contain a thermoplastic resin and a light wavelength absorbent.

Description

Laminated sheet and lens

The present invention relates to a laminated sheet and a lens including the laminated sheet.

The polarizing lens can prevent transmission of reflected light. Therefore, it is used to protect eyes by blocking strong reflected light outdoors such as ski resorts and fishing, and to ensure safety by blocking reflected light from oncoming vehicles when driving a car.

As a plastic polarizing lens, a polarizing lens composed of a plastic lens substrate and a polyvinyl alcohol polarizing film has been proposed (Patent Document 1).
In addition, it is known to contain an ultraviolet absorber in a plastic lens in order to protect eyes from harmful ultraviolet rays and suppress deterioration of the resin. Patent Document 2 describes a polarizing lens in which an ultraviolet absorber is contained in a plastic lens.

In addition, it is known that a function having good antiglare property and visibility can be imparted by blending an organic dye into a plastic lens for eyeglasses. Patent Documents 3 and 4 describe a plastic polarizing lens including a tetraazaporphyrin compound in a lens substrate. Patent Documents 5 and 6 describe a plastic lens including a tetraazaporphyrin compound in a lens substrate. Patent Document 7 discloses a plastic lens containing a photochromic compound.

Patent Document 8 discloses a plastic polarizing lens provided with a polymerization hardened layer of diethylene glycol bisallyl carbonate on both surfaces of a polyvinyl alcohol resin-based polarizing film layer and a polycarbonate resin base material on one of the polymerized hardened layers. . It is described that this polymerization hardened layer may contain a photochromic agent, an ultraviolet absorber, or an infrared absorber.
Patent Document 9 discloses a polarizing laminate in which protective layers made of polyimide resin are laminated on both surfaces of a polarizing layer via an adhesive, and describes that a resin layer is formed on at least one protective layer. ing. It is described that the protective layer may contain an ultraviolet absorber or the like. In addition, paragraph 0009 of the document describes that when a polycarbonate resin is used as the protective layer, the adhesion to the polarizing film is poor, and further cracks and optical distortion occur.
Patent Document 10 describes that in a polarizing plate including a polarizing layer and a protective layer, the protective layer is also used as a color light absorbing layer.

Japanese Patent Laid-Open No. 9-258209 JP 2007-52210 A JP 2011-145341 A JP 2008-134618 A JP 2012-219169 A International Publication No. 2013/168565 JP 2002-6272 A JP 2003-279905 A JP 2006-227591 A JP 2010-134349 A International Publication No. 2011/049108

However, as described in Patent Documents 2 to 7, when a light wavelength absorber such as an ultraviolet absorber or an organic dye is contained in a lens base material, a desired thickness or a desired lens is formed after the lens base material is formed. Although it is necessary to polish the back surface so as to obtain a shape, there is a problem in that the manufacturing cost increases because an expensive optical wavelength absorber is contained in the portion of the lens substrate that is removed by polishing. In addition, when an organic dye is included in the lens base, the lens base or the polished lens has a central portion with a different thickness at the edge, so the lens hue at the central portion and the peripheral portion are different, There is room for improvement in the lens appearance because of the occurrence of shading.

In order to solve the above problems, it is conceivable to disperse the light wavelength absorber in the polarizing film. However, when a hydrophilic film such as a polyvinyl alcohol film generally used as the polarizing film is used, When using a light wavelength absorber that is oily, it was difficult to disperse in the film.

The present invention can be described below.
[1] A polarizing layer;
A protective layer laminated on both sides of the polarizing layer;
With
A laminated sheet in which at least one of the protective layers contains the thermoplastic resin, and at least one of the protective layers contains the light wavelength absorber.
[2] The laminated sheet according to [1], wherein the two protective layers include the thermoplastic resin, and at least one of the protective layers includes the light wavelength absorber.
[3] The laminated sheet according to [1], wherein the two protective layers include the thermoplastic resin and the light wavelength absorber.
[4] The laminated sheet according to [1], wherein the two protective layers include the thermoplastic resin, and one of the protective layers includes the light wavelength absorber.
[5] The thermoplastic resin contained in the protective layer is at least one selected from a polycarbonate resin, a triacetyl cellulose resin, a polyamide resin, a polyester resin, and an acrylic resin. The laminated sheet according to any one of the above.
[6] The laminated sheet according to any one of [1] to [4], wherein the thermoplastic resin contained in the protective layer is an aromatic polycarbonate resin.
[7] The laminated sheet according to any one of [1] to [6], wherein an adhesive layer is provided on at least one of the polarizing layer and the protective layer.
[8] The laminated sheet according to any one of [1] to [7], wherein the polarizing layer is made of a polyvinyl alcohol polarizing film.
[9] The laminated sheet according to any one of [1] to [8], wherein the protective layer is made of a resin sheet or film.
[10] The laminated sheet according to any one of [1] to [9], wherein the light wavelength absorber is at least one selected from an ultraviolet absorber and a dye that absorbs a specific wavelength in the visible light region.
[11] A lens comprising the laminated sheet according to any one of [1] to [10].
[12] The laminated sheet according to any one of [1] to [10],
A thermoplastic resin layer laminated on at least one of the concave curved surface and the convex curved surface of the laminated sheet;
Including the lens.
[13] A polarizing film made of polyvinyl alcohol, comprising a convex curved surface and a concave curved surface located on the back side of the surface;
A second protective layer comprising an aromatic polycarbonate resin laminated on the convex curved surface of the polarizing film;
A first protective layer comprising an aromatic polycarbonate resin and a light wavelength absorber laminated on the concave curved surface of the polarizing film;
A lens substrate comprising an aromatic polycarbonate resin laminated on the first protective layer;
A lens.
[14] The lens according to [13], wherein the light wavelength absorber is at least one selected from an ultraviolet absorber and a dye that absorbs a specific wavelength in the visible light region.
[15] The lens according to [14], wherein the dye that absorbs a specific wavelength in the visible light region is a tetraazaporphyrin compound.
[16] The method according to any one of [13] to [15], wherein an adhesive layer is provided between at least one of the polarizing film and the first protective layer and between the polarizing film and the second protective layer. Lens.
[17] Sunglasses or goggles comprising the lens according to any one of [11] to [16].
[18] A method for producing a lens, comprising a step of bending the laminated sheet according to any one of [1] to [10] and bending the laminated sheet.
[19] A step of bending the laminated sheet according to any one of [1] to [10], and bending the laminated sheet;
Placing the laminated sheet in the mold such that at least one of the convex curved surface and the concave curved surface of the laminated sheet faces the mold surface at a predetermined distance; and
Forming a thermoplastic resin layer in the gap between the surface of the laminated sheet and the mold; and
A method for manufacturing a lens, comprising:
[20] The step of forming the thermoplastic resin layer includes:
The method for producing a lens according to [19], including a step of injection molding a thermoplastic resin in a gap between the surface of the laminated sheet and the mold.

According to the laminated sheet of the present invention, since the light wavelength absorber is contained in the protective layer formed on at least one surface of the polarizing layer composed of a polarizing film or the like, the difference in the hue of the lens and the color density are suppressed. In addition, a lens having an excellent appearance can be provided, and a lens having excellent polarization and light wavelength absorption can be provided.
Furthermore, since the protective layer contains the light wavelength absorber, it is possible to prevent the light wavelength absorber from being discarded, and the manufacturing cost can be suppressed.

The above-described object and other objects, features, and advantages will be further clarified by a preferred embodiment described below and the following drawings attached thereto.

It is a schematic sectional drawing of the lamination sheet in 1st Embodiment. It is a schematic sectional drawing of the lamination sheet in 2nd Embodiment. It is a schematic sectional drawing of the lens which consists of a lamination sheet of 1st Embodiment in 1st Embodiment. It is a schematic sectional drawing of the lens which consists of a lamination sheet of 2nd Embodiment in 1st Embodiment. It is a schematic sectional drawing of a lens provided with the lamination sheet of 1st Embodiment in 2nd Embodiment. It is a schematic sectional drawing of a lens provided with the lamination sheet of 2nd Embodiment in 2nd Embodiment. It is a schematic sectional drawing which shows the other aspect of the lens in Embodiment II.

The laminated sheet of the present invention comprises a polarizing layer, and a protective layer laminated on both surfaces of the polarizing layer,
At least one of the protective layers contains a thermoplastic resin, and at least one of the protective layers contains a light wavelength absorber.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.

<First Embodiment>
As shown in FIG. 1, the laminated sheet 10 of 1st Embodiment is a protective layer (1st protective layer 14a, 2nd protective layer) laminated | stacked on both surfaces (12a, 12b) of the polarizing layer 12 and the polarizing layer 12. As shown in FIG. Layer 14b).
The first protective layer 14a and the second protective layer 14b include a thermoplastic resin, and at least one includes a light wavelength absorber.

(Polarizing layer)
The polarizing layer 12 can be comprised from the film which consists of thermoplastic resins, for example, can be comprised from a polyvinyl-alcohol-type polarizing film or a polyethylene terephthalate-type polarizing film. The thickness of the polarizing layer 12 is about 10 to 500 μm.

The polarizing film can be prepared by the following procedure. First, a resin composition containing a resin and a predetermined amount of dichroic dye or iodine is formed into a film by a predetermined method. Alternatively, a resin film is dyed with a dichroic dye or iodine. Next, the obtained film can be produced by stretching in a uniaxial direction. If necessary, drying, heat treatment, and the like may be performed.

In this embodiment, it does not specifically limit as a dichroic dye contained in a polarizing film, Various dichroic dyes normally used for a polarizing member can be mentioned. Specific examples include azo, anthraquinone, merocyanine, styryl, azomethine, quinone, quinophthalone, perylene, indigo, tetrazine, stilbene, and benzidine dyes. Furthermore, Sumitomo Chemical History of Technology 2002-II (issued on November 11, 2002), P23-30, Technical Document on Development of Dichroic Dye for Liquid Crystal Display, International Publication No. 2014/030603, International Publication No. 2014/030611 It may be the one described in the specification, US Pat. No. 2,400,087, Japanese Patent Publication No. 2002-527786. In order to adjust the color tone of the color lens, the polarizing film may contain a dye other than the dichroic dye.
In this embodiment, it is preferable that the polarizing layer 12 is comprised from the polyvinyl alcohol-type polarizing film.

(Protective layer)
The first protective layer 14a and the second protective layer 14b include a thermoplastic resin, and at least one of them includes a light wavelength absorber. In this embodiment, a protective layer can be comprised from a resin sheet or a film. The thicknesses of the first protective layer 14a and the second protective layer 14b may be the same or different, but are about 50 to 1000 μm.

(Thermoplastic resin)
The thermoplastic resin contained in the first protective layer 14a and the second protective layer 14b is at least one selected from polycarbonate resin, triacetyl cellulose resin, polyamide resin, polyester resin, and acrylic resin.

(Polycarbonate resin)
Examples of the polycarbonate resin include conventionally known polycarbonate resins obtained from dihydric phenols or dihydric alcohols and carbonic acid diesters or phosgene, and aromatic polycarbonate resins are preferred.

Representative aromatic polycarbonate resins include bishydroxy (halogeno) phenylalkanes such as 2,2-bis (4-hydroxyphenyl) propane and 2,2-bis (4-hydroxy-3,5-dibromophenyl) propane. A polymer produced by a known method from a monomer such as a bisphenol compound or a fluorene group substituted on the alkane moiety is used.

The molecular weight of the aromatic polycarbonate resin may be in a normal range, and from the viewpoint of formability and mechanical strength, preferably the viscosity average molecular weight is 17,000 to 40,000, and from the viewpoint of manufacturing by extrusion. More preferably, it is 20,000 to 30,000.

(Triacetyl cellulose resin)
A triacetyl cellulose resin is a resin obtained by acetylating a cellulose resin.
Cellulose resin is a polysaccharide in which D-glucose, which is a basic unit, is connected in a straight chain with β-1,4 bonds. The glucose unit constituting cellulose has three hydroxyl groups at 2, 3, and 6 positions, and these hydroxyl groups can be esterified. The esterification of cellulose can be performed by a known method. For example, cellulose is treated with a strong caustic soda solution and then acylated with an acid anhydride. The degree of substitution of the obtained cellulose acylate is about 3. By hydrolyzing this, a cellulose acylate having the desired degree of substitution can be produced.

(Polyamide resin)
Examples of the polyamide resin include polyamide-6, polyamide-6,6 and polyamide-6,10.

(Polyester resin)
Polyester resins include polyethylene terephthalate, polypropylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyhexamethylene terephthalate, polycyclohexanedimethylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, poly (1,4-cyclohexanedimethanol) 1,4-cyclohexanedicarboxylate), polycyclohexanedimethanol adipate, poly (cyclohexane-dimethanol terephthalate) and the like.

(acrylic resin)
Acrylic resins include acrylic acid, methyl acrylate, ethyl acrylate, butyl acrylate, sodium acrylate, ammonium acrylate, 2-hydroxyethyl acrylate, methacrylic acid, methyl methacrylate, ethyl methacrylate, butyl methacrylate, Examples thereof include those having structural units derived from unsaturated monomers such as sodium methacrylate, ammonium methacrylate, 2-hydroxyethyl methacrylate, glycidyl methacrylate, acrylamide and methacrylamide. Moreover, what copolymerized the unsaturated monomer illustrated above and other unsaturated monomers, such as styrene, vinyl acetate, vinyl chloride, vinylidene chloride, divinylbenzene, may be used.

In the present embodiment, from the viewpoint of the effect of the present invention, the thermoplastic resin is preferably an aromatic polycarbonate resin.

(Light wavelength absorber)
The light wavelength absorber absorbs a specific wavelength, and includes at least one selected from an ultraviolet absorber and a dye that absorbs a specific wavelength in the visible light region.

(UV absorber)
Examples of the ultraviolet absorber in the present embodiment include benzophenone compounds, triazine compounds, benzotriazole compounds, and the like.

Specifically, 2,2′-dihydroxy-4-methoxybenzophenone, 2-hydroxy-4-acryloyloxybenzophenone, 2-hydroxy-4-acryloyloxy-5-tert-butylbenzophenone, 2-hydroxy-4-acryloyl Benzophenone ultraviolet absorbers such as oxy-2 ′, 4′-dichlorobenzophenone,
2- [4-[(2-hydroxy-3-dodecyloxypropyl) oxy] -2-hydroxyphenyl] 4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [ 4-[(2-hydroxy-3-tridecyloxypropyl) oxy] -2-hydroxyphenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [4 -[(2-hydroxy-3- (2'-ethyl) hexyl) oxy] -2-hydroxyphenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2, 4-bis (2-hydroxy-4-butyloxyphenyl) -6- (2,4-bis-butyloxyphenyl) -1,3,5-triazine, 2- (2-hydroxy-4- [1-octyl) Oxycarbonyl et Xyl] phenyl) -4,6-bis (4-phenylphenyl) -1,3,5-triazine and other triazine ultraviolet absorbers,
2- (2H-benzotriazol-2-yl) -4-methylphenol, 2- (2H-benzotriazol-2-yl) -4-tert-octylphenol, 2- (2H-benzotriazol-2-yl)- 4,6-bis (1-methyl-1-phenylethyl) phenol, 2- (2H-benzotriazol-2-yl) -4,6-di-tert-pentylphenol, 2- (5-chloro-2H- Benzotriazol-2-yl) -4-methyl-6-tert-butylphenol, 2- (5-chloro-2H-benzotriazol-2-yl) -2,4-tert-butylphenol, 2,2′-methylenebis [ Benzotriazoles such as 6- (2H-benzotriazol-2-yl) -4- (1,1,3,3-tetramethylbutyl) phenol] UV absorbers and the like, preferably 2- (2H-benzotriazol-2-yl) -4-tert-octylphenol and 2- (5-chloro-2H-benzotriazol-2-yl) -4- Examples thereof include benzotriazole ultraviolet absorbers of methyl-6-tert-butylphenol. These ultraviolet absorbers can be used alone or in combination of two or more.

In the present embodiment, the ultraviolet absorber is 0.01 to 20 parts by weight, preferably 0 with respect to 100 parts by weight of the aromatic polycarbonate resin contained in the protective layer (the first protective layer 14a or the second protective layer 14b). 1 to 10 parts by weight.

(Dye that absorbs a specific wavelength in the visible light region)
In the present embodiment, examples of the dye that absorbs a specific wavelength in the visible light region include tetraazaporphyrin compounds, squarylium compounds, phthalocyanine compounds, porphyrin compounds, merocyanine compounds, and methine compounds.

As the tetraazaporphyrin compound, a compound represented by the following general formula (1) is preferably used.

In general formula (1), A ₁ to A ₈ are each independently a hydrogen atom, a halogen atom, a nitro group, a cyano group, a hydroxy group, an amino group, a carboxyl group, a sulfonic acid group, or a straight chain having 1 to 20 carbon atoms. Branched or cyclic alkyl group, alkoxy group having 1 to 20 carbon atoms, aryloxy group having 6 to 20 carbon atoms, monoalkylamino group having 1 to 20 carbon atoms, dialkylamino group having 2 to 20 carbon atoms, carbon number A 7-20 dialkylamino group, a C7-20 aralkyl group, a C6-C20 aryl group, a heteroaryl group, a C6-C20 alkylthio group, a C6-C20 arylthio group, A ring excluding an aromatic ring may be formed through a linking group, and M represents two hydrogen atoms, an optionally substituted metal atom, or an oxymetal atom. Examples of the metal atom include a copper atom, a nickel atom, and a cobalt atom. Examples of product names include FDG-004, FDG-005, FDG-006, FDG-007 manufactured by Yamada Kasei Kogyo, and PD-311S manufactured by Yamamoto Kasei.

In the tetraazaporphyrin compound represented by the general formula (1), M is more preferably divalent copper in the general formula (1). Specific examples include tetra-t-butyl-tetraazaporphyrin / copper complex represented by the following formula (1a), which corresponds to the product number of PD-311S (manufactured by Yamamoto Kasei Co., Ltd.).

In the formula (1a), Cu represents divalent copper, and tC ₄ H ₉ represents a tertiary-butyl group, and the substitution positions of the four substituents are A ₁ or A ₂ in the general formula (1). either, either _{a 3} or _{a 4,} one of _{a 5} or _{a 6,} is either _{a 7} or _{a 8.}

In this embodiment, the pigment | dye which absorbs the specific wavelength of visible region is with respect to the aromatic polycarbonate resin contained in a protective layer (the 1st protective layer 14a and the 2nd protective layer 14b) with respect to a thermoplastic resin. 5 to 1000 ppm, preferably 10 to 500 ppm.

A light wavelength absorber may be contained in one or both of the first protective layer 14a and the second protective layer 14b. When the second protective layer 14b is on the objective surface side (the convex curved surface side in FIG. 5), the second protective layer 14b preferably contains an ultraviolet absorber from the viewpoint of suppressing deterioration of the polarizing layer 12 and the like. More preferably, the first protective layer 14a contains a dye that absorbs a specific wavelength in the visible light region, and the second protective layer 14b contains an ultraviolet absorber.

In the present embodiment, the light wavelength absorber is contained in the first protective layer 14a and the second protective layer 14b by containing the light wavelength absorber, as compared with the case where the polarizing layer 12 contains the light wavelength absorber. Is uniformly dispersed, and a laminated sheet that expresses a desired effect can be obtained efficiently.

The laminated sheet 10 of this embodiment can contain a compound exhibiting dimming properties in at least one of the polarizing layer 12, the first protective layer 14a, and the second protective layer 14b.
A photochromic compound can be mentioned as a compound which shows light control property. There is no restriction | limiting in particular as a photochromic compound, From a conventionally well-known compound which can be used for a photochromic lens, arbitrary things can be selected suitably and can be used. For example, one type or two or more types can be used from spiropyran compounds, spirooxazine compounds, fulgide compounds, naphthopyran compounds, and bisimidazole compounds depending on the desired coloration.

The photochromic compound in this embodiment can be obtained by the method described in WO2009 / 146509, WO2010 / 20770, WO2012 / 149599, and WO2012 / 162725.
In addition, from the viewpoint of preventing deterioration of the protective layer itself and preventing deterioration of the light wavelength absorber added to the protective layer, the protective layer includes a light stabilizer, an antioxidant, a heat stabilizer, a light deterioration inhibitor, and a heat deterioration inhibitor. Etc. may be added as appropriate.

[Method for Manufacturing Laminated Sheet 10]
The laminated sheet 10 of this embodiment can be manufactured by laminating the first protective layer 14a and the second protective layer 14b on both

surfaces

12a and 12b of the polarizing layer 12, respectively.
Specifically, it can be produced by bringing a sheet or film to be a protective layer into contact with both sides of the polarizing film and then adhering them. The pressurizing condition in the pressure bonding is appropriately selected depending on the type and thickness of the sheet or film.

At least one surface of the polarizing film or at least one surface of the protective layer may be subjected to surface treatment or easy adhesion treatment. Examples of the surface treatment include gas or chemical solution treatment, corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, electron beam irradiation treatment, surface roughening treatment, flame treatment, and the like. And anchor agent coating treatment.

Second Embodiment
As shown in FIG. 2, the laminated sheet 20 of the second embodiment is
The polarizing layer 22, the adhesive layer (first adhesive layer 23 a, second adhesive layer 23 b) and the adhesive layer (first adhesive layer 23 a, second layer) laminated on both surfaces (22 a, 22 b) of the polarizing layer 22, respectively. And protective layers (first protective layer 24a and second protective layer 24b), which are respectively stacked on the adhesive layer 23b).

The polarizing layer 22, the first protective layer 24a, and the second protective layer 24b are the same as the polarizing layer 12, the first protective layer 14a, and the second protective layer 14b of the first embodiment.

[Adhesive layer]
In the present embodiment, the first adhesive layer 23 a is provided between the first protective layer 24 a and the polarizing layer 22, and the second adhesive layer 23 b is further provided between the second protective layer 24 b and the polarizing layer 22. Thereby, a protective layer and a polarizing layer can be adhere | attached more firmly.
The thicknesses of the first adhesive layer 23a and the first adhesive layer 23a may be the same or different and are about 0.1 to 50 μm.

Materials included in the adhesive layers (the first adhesive layer 23a and the second adhesive layer 23b) include acrylic resin materials, urethane resin materials, polyester resin materials, melamine resin materials, epoxy resin materials, and silicone materials. Etc. In particular, from the viewpoint of adhesiveness with an aromatic polycarbonate and adhesiveness with the polarizing layer 22, a two-component thermosetting urethane resin composed of a polyurethane prepolymer which is a urethane resin material and a curing agent is preferable.

A light wavelength absorber may be contained in one or both of the first protective layer 24a and the second protective layer 24b. When the second protective layer 24b is on the object plane side, it is preferable that the second protective layer 24b contains an ultraviolet absorber from the viewpoint of suppressing deterioration of the polarizing layer 22 and the like, and the first protective layer 24a specifies the visible light region. More preferably, the second protective layer 24b contains a UV absorber.

The laminated sheet 20 of the present embodiment is a compound that exhibits dimming properties in at least one of the polarizing layer 12, the first adhesive layer 23a, the second adhesive layer 23b, the first protective layer 24a, and the second protective layer 24b. Can be included. As a compound which shows light control property, the photochromic compound illustrated in 1st Embodiment can be mentioned. In addition, from the viewpoint of preventing deterioration of the protective layer itself and preventing deterioration of the light wavelength absorber added to the protective layer, the protective layer includes a light stabilizer, an antioxidant, a heat stabilizer, a light deterioration inhibitor, and a heat deterioration inhibitor. Etc. may be added as appropriate.
In the present embodiment, only one of the first adhesive layer 23a and the second adhesive layer 23b may be formed.

[Method for Producing Laminate Sheet 20]
In the laminated sheet 20 of the present embodiment, the first protective layer 24a and the second protective layer 24b are laminated on both

surfaces

22a and 22b of the polarizing layer 22 via the first adhesive layer 23a and the second adhesive layer 23b, respectively. Can be manufactured. Alternatively, the first adhesive layer 23a and the second adhesive layer 23b are respectively formed on the surfaces of the first protective layer 24a and the second protective layer 24b, and this protective layer with the adhesive layer is laminated on both

surfaces

22a and 22b of the polarizing layer 22. It can also be manufactured.

Specifically, it can be produced by forming adhesive layers on both surfaces of the polarizing film and then pressure-bonding a sheet or film serving as a protective layer. Alternatively, it can be produced by forming an adhesive layer on one surface of a sheet or film to be a protective layer, bringing each adhesive layer into contact with both surfaces of the polarizing film, and then pressure-bonding. The first adhesive layer 23a and the second adhesive layer 23b can be formed by applying an adhesive containing the resin material. The pressurizing condition in the pressure bonding is appropriately selected depending on the type and thickness of the sheet or film.
Note that at least one surface of the polarizing film or at least one surface of the protective layer may be subjected to surface treatment or easy adhesion treatment. Examples of the surface treatment include gas or chemical solution treatment, corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, electron beam irradiation treatment, surface roughening treatment, flame treatment, and the like. And anchor agent coating treatment.

[lens]
As the lens of the present invention,
Curved lens comprising the laminated sheet of the first embodiment or the second embodiment, or the laminated sheet of the first embodiment or the second embodiment, the concave curved surface and the convex curved of the laminated sheet A lens comprising a thermoplastic resin layer laminated on at least one surface of the surface,
Can be mentioned.

<First Embodiment>
As shown in FIG. 3, the lens 10 a according to the present embodiment includes a curved laminated sheet according to the first embodiment. Further, as shown in FIG. 4, the lens 20a of the present embodiment is composed of a curved laminated sheet of the second embodiment.
Hereinafter, the lens 10a of this embodiment will be described.

The lens 10a can be manufactured by bending and bending the laminated sheet 10 of the first embodiment.
Specifically, the laminated sheet 10 is bent under heat and pressure so that the exposed surface of the second protective layer 14b becomes a convex curved surface. The heating condition and the pressurizing condition can be appropriately selected depending on the kind of resin constituting the polarizing layer and the layer thickness. Further, the laminated sheet 10 can be bent under heat and pressure so that the exposed surface of the first protective layer 14a becomes a convex curved surface. The heating condition and the pressurizing condition can be appropriately selected depending on the type and thickness of the resin constituting the polarizing layer.
When the convex curved surface of the second protective layer 14b serves as the objective surface of the lens and the concave curved surface of the first protective layer 14a serves as the eye-facing surface, the first protective layer 14a may contain a light wavelength absorber. Preferably, the second protective layer 14b contains an ultraviolet absorber, and the first protective layer 14a more preferably contains a dye that absorbs a specific wavelength in the visible light region, such as a tetraazaporphyrin compound. Thereby, decomposition | disassembly by the ultraviolet-ray etc. of the compound contained in the 2nd protective layer 14b can be suppressed more suitably.

In the present embodiment, a coating layer, an antifogging layer, a stainproof layer, a water repellent layer, etc., which will be described later, are provided as necessary on at least one surface of the first protective layer 14a and the second protective layer 14b of the lens 10a. May be.

The lens 20a made of the laminated sheet 20 of the second embodiment is the same as the lens 10a of the present embodiment except that the laminated sheet 20 is used.

<Second embodiment (lens made of laminated sheet and thermoplastic resin layer)>
As shown in FIG. 5, the lens 30 of the present embodiment is curved on the laminated sheet 10 ′ of the first embodiment and the concave curved surface of the laminated sheet 10 ′ (the concave curved surface of the first protective layer 14a). And a thermoplastic resin layer 32 laminated thereon. Further, as shown in FIG. 6, the lens 40 of the present embodiment includes a curved laminated sheet 20 ′ of the second embodiment, and a concave curved surface of the laminated sheet 20 ′ (a concave curved surface of the first protective layer 24a). And a thermoplastic resin layer 32 laminated thereon.
Hereinafter, the lens 30 of this embodiment will be described.

The thermoplastic resin layer 32 can contain the same resin as the thermoplastic resin contained in the protective layer. Moreover, the thermoplastic resin layer 32 can also contain a conventionally well-known additive suitably, and can contain a ultraviolet absorber. In addition, the pigment | dye which absorbs the specific wavelength of visible region can also be included in the range which does not affect the color tone and lightness and darkness of the thermoplastic resin layer 32.
The layer thickness of the thermoplastic resin layer 32, which is a lens substrate, is about 0.5 to 150 mm.

In the present embodiment, as shown in FIG. 7, the laminated sheet 10 ′ according to the first embodiment is laminated on the concave curved surface of the laminated sheet 10 ′ (the concave curved surface of the first protective layer 14a). Even the lens 50 including the thermoplastic resin layer 32 thus formed and the thermoplastic resin layer 34 laminated on the convex curved surface (surface on the second protective layer 14b side) of the laminated sheet 10 ′. Good. The resins contained in the thermoplastic resin layer 32 and the thermoplastic resin layer 34 may be the same or different, and the layer thicknesses may be the same or different.

In the present embodiment, the lens 40 shown in FIG. 6 is preferable. Specifically, the second protective layer 24b on the object plane side contains an ultraviolet absorber, the first protective layer 24a on the eye side contains a dye that absorbs a specific wavelength in the visible light region, and the laminated sheet 20 ′. More preferably, the thermoplastic resin layer 32 is laminated on the concave curved surface (the concave curved surface of the first protective layer 24a). Thereby, decomposition | disassembly by the ultraviolet-ray etc. of the pigment | dye contained in the 2nd protective layer 24b can be suppressed more suitably.

The lens 40 using the laminated sheet 20 of the second embodiment is the same as the lens 30 using the laminated sheet 10 of the first embodiment, except that the laminated sheet 20 is used. Similarly to the lens 50, a thermoplastic resin layer can be provided on both sides of the curved laminated sheet 20 ′.

A specific configuration of a preferable lens of the present embodiment will be described based on the lens 30 shown in FIG.
The lens 30 in FIG.
A polarizing film 12 made of polyvinyl alcohol, comprising a convex curved surface and a concave curved surface located on the back side of the surface;
A second protective layer 14b containing an aromatic polycarbonate resin laminated on the convex curved surface of the polarizing film 12,
A first protective layer 14a containing an aromatic polycarbonate resin and a light wavelength absorber laminated on the concave curved surface of the polarizing film 12,
A lens substrate 32 comprising an aromatic polycarbonate resin laminated on the first protective layer 14a;
Is provided.
According to the above-described lens, the difference in hue of the lens and the color density are further suppressed, and the production cost can be reduced because the protective layer contains the light wavelength absorber.
The configuration described in the above embodiment can be adopted as a configuration that does not particularly refer to the polarizing film 12, the first protective layer 14a, the second protective layer 14b, and the lens substrate 32.

The light wavelength absorber is at least one selected from the above-described ultraviolet absorber and the above-described dye that absorbs a specific wavelength in the visible light region, and is a dye that absorbs a specific wavelength in the visible light region. preferable. As the dye, the above-described tetraazaporphyrin compound is more preferably used from the viewpoint of the effect of the present invention.
When the convex curved surface of the second protective layer 14b serves as the objective surface of the lens and the concave curved surface of the first protective layer 14a serves as the eye-facing surface, the first protective layer 14a may contain a light wavelength absorber. Preferably, the second protective layer 14b contains an ultraviolet absorber, and the first protective layer 14a more preferably contains a dye that absorbs a specific wavelength in the visible light region, such as a tetraazaporphyrin compound. Thereby, decomposition | disassembly by the ultraviolet-ray etc. of the compound contained in the 2nd protective layer 14b can be suppressed.

In a preferable lens of this embodiment, a lens shown in FIG. 6 including an adhesive layer between the polarizing film and the protective layer can be employed.
As shown in FIG. 6, the lens 40 includes a first adhesive layer 23a between the polarizing film 22 and the first protective layer 24a, and further a second adhesive layer between the polarizing film 22 and the second protective layer 24b. 23b. In the present embodiment, it is preferable to include at least the second adhesive layer 23b.

[Lens manufacturing method]
The method for producing a lens of the present invention includes a step of bending a laminated sheet and bending the laminated sheet;
Disposing the laminated sheet in the mold so that at least one of the convex curved surface and the concave curved surface of the curved laminated sheet faces the mold surface at a predetermined distance; ,
Forming a thermoplastic resin layer in the gap between the surface of the laminated sheet and the mold.

Embodiments of the present invention will be described below.
The manufacturing method of the lens 30 of this embodiment includes the following steps.
Step a: The laminated sheet 10 is bent and bent.
Step b: The laminated sheet 10 ′ is placed in the mold and curved so that the convex curved surface of the curved laminated sheet 10 ′ faces the mold surface for forming the objective surface of the lens. The laminated sheet 10 ′ is placed in the mold so that the concave curved surface of the laminated sheet 10 ′ facing the mold surface for forming the eye-facing surface of the lens is spaced a predetermined distance away.
Step c: forming a thermoplastic resin layer in the gap between the concave curved surface of the laminated sheet and the mold.

Moreover, the manufacturing method of the lens 40 of this embodiment includes the following processes.
Step 1: The laminated sheet 20 is bent and bent.
Step 2: The laminated sheet 20 ′ is placed in the mold so that the convex curved surface of the curved laminated sheet 20 ′ is opposed to the mold surface for forming the objective surface of the lens. The laminated sheet 20 ′ is arranged in the mold so that the concave curved surface of the laminated sheet 20 ′ is opposed to the mold surface for forming the eye-facing surface of the lens with a predetermined distance.
Process 3: A thermoplastic resin layer is formed in the space | gap between the concave curved surface of the said lamination sheet, and a metal mold | die.
Hereinafter, this embodiment will be described by a method for manufacturing the lens 30.

(Process a)
In this step, the laminated sheet 10 is bent under heat and pressure so that the exposed surface of the second protective layer 14b becomes a convex curved surface. The heating condition and the pressurizing condition can be appropriately selected depending on the kind and layer thickness of the resin constituting the polarizing layer and the protective layer.

(Process b)
Next, the curved laminated sheet 10 is placed in a mold. Specifically, the convex curved surface (exposed surface of the second protective layer 14b) is disposed so as to face the mold surface for forming the objective surface of the lens, and the concave curved surface (first surface). The laminated sheet 10 ′ is placed in the mold so that the exposed surface of the protective layer 14a faces the mold surface for forming the eye-facing surface of the lens with a predetermined distance therebetween. The convex curved surface (exposed surface of the second protective layer 14b) may be in contact with the mold surface. The distance between the concave curved surface (exposed surface of the first protective layer 14a) and the mold surface is about 0.5 to 150 mm.
A mold release agent may be applied to the surface of the mold surface.

(Process c)
And the thermoplastic resin layer 32 is formed in the space | gap between the concave curved surface (exposed surface of the 1st protective layer 14a) of the lamination sheet 10, and a metal mold | die.
Step c can include a step of injection-molding a thermoplastic resin in the gap between the concave curved surface of the laminated sheet 10 and the mold, whereby the thermoplastic resin is formed on the first protective layer 14a. A layer (lens substrate) can be formed.
As the thermoplastic resin contained in the resin layer, a thermoplastic resin contained in the protective layer can be used.

After step c, the lens of this embodiment can be obtained by releasing from the mold. Further, if necessary, the back surface 32a of the thermoplastic resin layer can be polished so as to have a desired thickness or a desired lens power.

In order to manufacture the lens 50 shown in FIG. 7, in the step b, the convex curved surface of the curved laminated sheet 10 ′ is a predetermined distance from the mold surface for forming the objective surface of the lens. The laminated sheet 10 ′ is made of metal so that the concave curved surface of the laminated sheet 10 ′ that is spaced apart and curved is opposed to the mold surface for forming the opposite surface of the lens by a predetermined distance. Place in the mold. The distance between the convex curved surface and the mold surface and the distance between the concave curved surface and the mold surface may be the same or different, and are about 0.5 to 150 mm.

And in the said process c, the thermoplastic resin layers 32 and 34 are formed in the space | gap between the convex curved surface of a lamination sheet and a metal mold | die, and the space | gap between a concave curved surface and a metal mold | die. Thus, the lens 50 shown in FIG. 7 can be manufactured.

In this embodiment, a coating layer may be applied to at least one of the objective surface and the eye-facing surface of the lens, if necessary.
Specific examples of the coating layer include a primer layer, a hard coat layer, an antireflection layer, a mirror coat layer, an antifogging coat layer, a stainproof layer, and a water repellent layer. Each of these coating layers can be used alone, or a plurality of coating layers can be used in multiple layers.

Each of these coating layers is a photochromic dye; an infrared absorber for the purpose of protecting eyes from infrared rays; a light stabilizer, an antioxidant, a heat stabilizer for the purpose of improving the weather resistance of the lens and the durability of the layer itself, A photodegradation inhibitor or a thermal degradation inhibitor; a dye or pigment for the purpose of enhancing the fashionability of the lens; an antistatic agent; and other known additives for enhancing the performance of the lens may be used in combination.
For the layer to be coated by coating, various leveling agents for the purpose of improving coating properties may be used.

The primer layer is usually formed between a hard coat layer and a protective layer described later. The primer layer is a coating layer for the purpose of improving the adhesion between the hard coat layer and the protective layer formed thereon, and in some cases, the impact resistance can be improved. As long as the primer layer has high adhesion to the protective layer, any material can be used, but usually a primer composition mainly composed of urethane resin, epoxy resin, polyester resin, melanin resin, polyvinyl acetal. Etc. are used. The primer composition may use an appropriate solvent that does not affect the lens for the purpose of adjusting the viscosity of the composition. Of course, you may use it without a solvent.

The primer layer can be formed by either a coating method or a dry method. In the case of using the coating method, the primer layer is formed by solidifying after applying the primer composition to the lens by a known coating method such as spin coating or dip coating. When performing by a dry method, it forms by well-known dry methods, such as CVD method and a vacuum evaporation method. When forming the primer layer, the surface of the lens may be subjected to a pretreatment such as an alkali treatment, a plasma treatment, or an ultraviolet treatment as necessary for the purpose of improving adhesion.
The hard coat layer is a coating layer for the purpose of imparting functions such as scratch resistance, abrasion resistance, moisture resistance, warm water resistance, heat resistance, and weather resistance to the lens surface.

The hard coat layer is generally composed of an organic silicon compound having a curing property and an element selected from the element group of Si, Al, Sn, Sb, Ta, Ce, La, Fe, Zn, W, Zr, In, and Ti. A hard coat composition containing at least one kind of fine particles composed of one or more kinds of oxide fine particles and / or a composite oxide of two or more elements selected from these element groups is used.

In addition to the above components, the hard coat composition includes at least amines, amino acids, metal acetylacetonate complexes, organic acid metal salts, perchloric acids, perchloric acid salts, acids, metal chlorides and polyfunctional epoxy compounds. It is preferable to include any of them. A suitable solvent that does not affect the lens may be used for the hard coat composition, or it may be used without a solvent.

The hard coat layer is usually formed by applying a hard coat composition by a known coating method such as spin coating or dip coating and then curing. Examples of the curing method include thermal curing, a curing method by irradiation with energy rays such as ultraviolet rays and visible rays, and the like. In order to suppress the occurrence of interference fringes, the refractive index of the hard coat layer is preferably in the range of ± 0.1 in the difference in refractive index from the lens.

The antireflection layer is usually formed on the hard coat layer as necessary. The antireflection layer includes an inorganic type and an organic type. In the case of an inorganic type, an inorganic oxide such as SiO ₂ or TiO ₂ is used, and a vacuum deposition method, a sputtering method, an ion plating method, an ion beam assist method, a CVD method is used. It is formed by the dry method. In the case of an organic type, it is formed by a wet method using a composition containing an organosilicon compound and silica-based fine particles having internal cavities.

The antireflection layer has a single layer and a multilayer, and when used in a single layer, the refractive index is preferably at least 0.1 lower than the refractive index of the hard coat layer. In order to effectively exhibit the antireflection function, a multilayer antireflection film is preferably used. In that case, a low refractive index film and a high refractive index film are alternately laminated. Also in this case, the refractive index difference between the low refractive index film and the high refractive index film is preferably 0.1 or more. Examples of the high refractive index film include ZnO, TiO ₂ , CeO ₂ , Sb ₂ O ₅ , SnO ₂ , ZrO ₂ , and Ta ₂ O _5, and examples of the low refractive index film include an SiO ₂ film. .

The mirror coat layer is a layer that gives the lens surface (objective surface) a function of reflecting like a mirror. The mirror coat layer is manufactured by forming a film including a metal layer such as Cr, Al, Ag, Au, Ni, Co, Ti on the lens surface. Further, as a method for forming a mirror coat layer without using a metal layer, there is a method for forming a film including a mirror coat layer by a transparent dielectric multilayer film. The mirror coat layer is preferably installed on the object plane side.

On the coating layer, an anti-fogging layer, a stain-proof layer, and a water repellent layer may be formed as necessary. As a method for forming the antifogging layer, the antifouling layer, and the water repellent layer, as long as the antireflection function is not adversely affected, the processing method and processing materials are not particularly limited, and a known antifogging treatment is possible. Methods, antifouling treatment methods, water repellent treatment methods, and materials can be used. For example, in the antifogging treatment method and the antifouling treatment method, a method of covering the surface with a surfactant, a method of adding a hydrophilic film to the surface to make it water absorbent, a method of covering the surface with fine irregularities and increasing water absorption Examples thereof include a method of absorbing water by utilizing photocatalytic activity, and a method of preventing water droplet adhesion by applying a super water-repellent treatment. Further, in the water repellent treatment method, a method of forming a water repellent treatment layer by vapor deposition or sputtering of a fluorine-containing silane compound or the like, or a method of forming a water repellent treatment layer by coating after dissolving the fluorine-containing silane compound in a solvent Etc.

The lens 40 using the laminated sheet 20 of the second embodiment can be manufactured in the same manner as the lens 30 using the laminated sheet 10 of the first embodiment, except that the laminated sheet 20 is used. Further, similarly to the lens 50, a thermoplastic resin layer can be formed on both surfaces of the curved laminated sheet 20 ′.

[Usage]
The lens of the present embodiment can be used for sunglasses, goggles, correction spectacle lenses and the like by appropriately forming the above coating layer.
The

laminated sheet

10 or 20 of the present embodiment can be used for a polarizing plate, a photochromic plate, a polarizing / photochromic plate, and the like by appropriately forming the coating layer.

Although the present invention has been described above with reference to the embodiment, the following modes can also be taken.
For example, in the first or second embodiment, one protective layer can be formed of a resin other than a thermoplastic resin.

Moreover, in 1st or 2nd embodiment, a light wavelength absorber can be included only in one protective layer, or in two protective layers, or one protective layer is formed from resin other than a thermoplastic resin. At the same time, only one protective layer can contain a light wavelength absorber.

In the lens of the second embodiment, the thermoplastic resin layer may be formed only on the convex curved surface of the curved laminated sheet 10 ′ (the convex curved surface of the second protective layer 14b).

In the manufacturing method of the lens of this embodiment,
The laminated sheet 10 ′ is disposed in the mold so that the concave curved surface of the curved laminated sheet 10 ′ is opposed to the mold surface for forming the opposite surface of the lens with a predetermined distance therebetween, A thermoplastic resin layer can be formed in the gap between the convex curved surface of the laminated sheet and the mold.

Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

(Production of polycarbonate sheet (production of protective layer))
Bisphenol A type polycarbonate resin containing 0.4% by weight of 2- (5-chloro-2H-benzotriazol-2-yl) -4-methyl-6-tert-butylphenol (trade name: SD Polycarbonate SD2173M, Sumitomo Stylon Polycarbonate ( 10 kg) was dried at 140 ° C. for 4 hours or more, a dye having an absorption wavelength at 585 nm (trade name: PD-311S, manufactured by Yamamoto Kasei Co., Ltd.) 134 ppm was added, and the mixture was kneaded at 280 ° C. with an extruder. And pelletized to obtain polycarbonate pellets.
The pellets were dried at 140 ° C. for 4 hours or more, and then formed into a film at a cylinder temperature of 280 ° C., a die temperature of 280 ° C., and a roll temperature of 80 ° C. to obtain a polycarbonate sheet A having a thickness of 0.3 mm. At this time, the transmittance at a wavelength of 585 nm was 21%.
A polycarbonate sheet B having a thickness of 0.3 mm was obtained in the same manner as above except that a dye having an absorption wavelength at 585 nm (trade name: PD-311S, manufactured by Yamamoto Kasei Co., Ltd.) was not added.

(Preparation of polarizing film)
A commercially available PVA liquid washing paste was dropped on a glass substrate using a 1 mm thick plastic plate as a spacer, conditioned with a glass rod, and then placed on a hot plate with the glass plate and dried at 50 ° C. for 1 hour.
Separately, 0.2 g of iodine and 0.5 g of potassium iodide were mixed and dissolved in a small amount of water, and then this was added to 500 ml of 4% boric acid solution to prepare a staining solution.
After the dried film was immersed for about 30 seconds, it was placed on a Kimwipe to absorb moisture. Before the film was dried, it was set on a tenter and stretched 3 times, and held for 30 minutes and dried to obtain a polarizing film. The average visible light transmittance of the polarizing film was 30%.

(Production of laminated sheet)
A laminated sheet was prepared by laminating a polycarbonate sheet A on one side of the polarizing film A and a polycarbonate sheet B on the other side with a urethane resin adhesive. The visible light transmittance of 585 nm of the laminated sheet was 6.5%.
(Production of polarizing lens)
A circular article having a diameter of 81 mm made of this laminated sheet is prepared by a punching method, and in a mold maintained at 130 ° C., the polycarbonate sheet B has a convex curved surface and the polycarbonate sheet A has a concave curved surface. A polarizing wafer was prepared by bending the film. Next, a base curve 6C is formed by injection molding a bisphenol A type aromatic polycarbonate resin (trade name: SD Polycarbonate SD2173M, manufactured by Sumitomo Stylon Polycarbonate Co., Ltd.) on the concave curved surface (surface of the polycarbonate sheet A) of the polarizing wafer. A polarizing lens (semi-finished product) having a center thickness of 10 mm was obtained. The obtained polarizing lens was excellent in red and green contrast, and the entire lens surface was uniform light blue-purple.

This application claims priority based on Japanese Patent Application No. 2016-236961 filed on Dec. 6, 2016, the entire disclosure of which is incorporated herein.

Claims

A polarizing layer;
A protective layer laminated on both sides of the polarizing layer;
With
At least one of the protective layers includes a thermoplastic resin, and at least one of the protective layers includes a light wavelength absorber.
The laminated sheet according to claim 1, wherein the two protective layers contain the thermoplastic resin, and at least one of the protective layers contains the light wavelength absorber.
2. The laminated sheet according to claim 1, wherein the two protective layers contain the thermoplastic resin and the light wavelength absorber.
The laminated sheet according to claim 1, wherein two of the protective layers contain the thermoplastic resin, and one of the protective layers contains the light wavelength absorber.
The thermoplastic resin contained in the protective layer is at least one selected from polycarbonate resin, triacetyl cellulose resin, polyamide resin, polyester resin, and acrylic resin. Laminated sheet.
The laminated sheet according to any one of claims 1 to 4, wherein the thermoplastic resin contained in the protective layer is an aromatic polycarbonate resin.
The laminated sheet according to any one of claims 1 to 6, further comprising an adhesive layer on at least one of the polarizing layer and the protective layer.
The laminated sheet according to any one of claims 1 to 7, wherein the polarizing layer comprises a polyvinyl alcohol polarizing film.
The laminated sheet according to any one of claims 1 to 8, wherein the protective layer comprises a resin sheet or a film.
The laminated sheet according to any one of claims 1 to 9, wherein the light wavelength absorber is at least one selected from an ultraviolet absorber and a dye that absorbs a specific wavelength in the visible light region.
A lens comprising the laminated sheet according to any one of claims 1 to 10.
A laminated sheet according to any one of claims 1 to 10, which is curved;
A thermoplastic resin layer laminated on at least one of the concave curved surface and the convex curved surface of the laminated sheet;
Including the lens.
A polarizing film made of polyvinyl alcohol, comprising a convex curved surface and a concave curved surface located on the back side of the surface;
A second protective layer comprising an aromatic polycarbonate resin laminated on the convex curved surface of the polarizing film;
A first protective layer comprising an aromatic polycarbonate resin and a light wavelength absorber laminated on the concave curved surface of the polarizing film;
A lens substrate comprising an aromatic polycarbonate resin laminated on the first protective layer;
A lens.
The lens according to claim 13, wherein the light wavelength absorber is at least one selected from an ultraviolet absorber and a dye that absorbs a specific wavelength in the visible light region.
The lens according to claim 14, wherein the dye that absorbs a specific wavelength in the visible light region is a tetraazaporphyrin compound.
The lens according to any one of claims 13 to 15, further comprising an adhesive layer between at least one of the polarizing film and the first protective layer and between the polarizing film and the second protective layer.
Sunglasses or goggles comprising the lens according to any one of claims 11 to 16.
A method for producing a lens, comprising a step of bending the laminated sheet according to any one of claims 1 to 10 and bending the laminated sheet.
Bending the laminated sheet according to any one of claims 1 to 10, and bending the laminated sheet;
Placing the laminated sheet in the mold such that at least one of the convex curved surface and the concave curved surface of the laminated sheet faces the mold surface at a predetermined distance; and
Forming a thermoplastic resin layer in the gap between the surface of the laminated sheet and the mold; and
A method for manufacturing a lens, comprising:
The step of forming the thermoplastic resin layer includes:
The method for manufacturing a lens according to claim 19, comprising a step of injection molding a thermoplastic resin in a gap between a surface of the laminated sheet and a mold.