JPWO2018105593A1 - Laminated sheet and lens - Google Patents

Abstract

The laminated sheet (10) of the present invention comprises a polarizing layer (12) and a protective layer (first protective layer (14a), laminated on both sides ((12a), (12b)) of the polarizing layer (12). A second protective layer (14b)), and the first protective layer (14a) and the second protective layer (14b) contain a thermoplastic resin and a light wavelength absorber.

Description

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

  Polarized lenses can prevent transmission of reflected light. Therefore, it is used for protection of the eye by blocking strong reflected light in the open air such as a ski resort or fishing, and securing of safety by blocking reflected light from an oncoming vehicle at the time of driving a car.

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

  In addition, it is known that, by blending an organic pigment in a plastic lens for spectacles, a function having good antiglare property and visibility can be provided. Patent Documents 3 and 4 describe plastic polarized lenses containing a tetraazaporphyrin compound in the lens substrate. Patent Documents 5 and 6 describe plastic lenses containing a tetraazaporphyrin compound as a lens substrate. Patent Document 7 discloses a plastic lens containing a photochromic compound.

Patent Document 8 discloses a plastic polarized lens provided with a polymerization cured layer of diethylene glycol bisallyl carbonate on both sides of a polyvinyl alcohol resin-based polarizing film layer, and a polycarbonate resin substrate on one polymerization cured layer. . It is stated that the polymerization cured layer may contain a photochromic agent, an ultraviolet light absorber, or an infrared light absorber.
Patent Document 9 discloses a light-polarizing laminate in which protective layers made of polyimide resin are laminated on both sides of a polarizing layer through an adhesive, and it is described that a resin layer is formed on at least one of the protective layers. ing. It is stated that the protective layer may contain an ultraviolet light absorber and the like. Further, it is described in paragraph 0009 of this document that adhesion with the polarizing film is poor and cracks and optical distortion occur when polycarbonate resin is used as the protective layer.
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.

Unexamined-Japanese-Patent No. 9-258009 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 Unexamined-Japanese-Patent No. 2006-227591 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 light absorber or an organic dye is contained in the lens substrate, a desired thickness or a desired lens is formed after forming the lens substrate. Although it is necessary to polish the back surface so as to form a shape, there is a problem that the manufacturing cost is increased because an expensive light wavelength absorber is contained in the lens base of the portion to be removed by polishing. Furthermore, when an organic dye is contained in the lens substrate, the lens substrate or the center portion of the lens after polishing and the thickness of the edge portion differ, so that the hue of the lens in the center portion and the peripheral portion is different or There is room for improvement in the lens appearance because shading occurs.

  In order to solve the above-mentioned problems, it is conceivable to disperse the light wavelength absorbing agent in a polarizing film, but in the case of using a hydrophilic film such as a polyvinyl alcohol-based film generally used as a polarizing film, In the case of using a light wavelength absorber that is oily, it was difficult to disperse it in the film.

The present invention can be shown below.
[1] with a polarizing layer,
Protective layers laminated on both sides of the polarizing layer,
Equipped with
A laminated sheet, wherein 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 contain the thermoplastic resin, and at least one of the protective layers contains 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 contain the thermoplastic resin, and one of the protective layers contains the light wavelength absorber.
[5] The thermoplastic resin according to [1] to [4], wherein 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 according to any one.
[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], comprising an adhesive layer 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-based polarizing film.
[9] The laminated sheet according to any one of [1] to [8], wherein the protective layer comprises a resin sheet or a 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 light absorber and a dye that absorbs a specific wavelength in the visible light range.
[11] A lens comprising the laminated sheet according to any one of [1] to [10] which is curved.
[12] The laminated sheet according to any one of [1] to [10] which is curved,
A thermoplastic resin layer laminated on at least one of a concave curved surface and a 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 an optical 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;
Equipped with a lens.
[14] The lens according to [13], wherein the light wavelength absorber is at least one selected from an ultraviolet light absorber and a dye that absorbs a specific wavelength in the visible light range.
[15] The lens according to [14], wherein the dye that absorbs a specific wavelength in the visible light range is a tetraazaporphyrin compound.
[16] 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, according to any one of [13] to [15]. Lens.
[17] A sunglasses or goggle comprising the lens according to any one of [11] to [16].
[18] A method for producing a lens, comprising the steps of bending the laminated sheet according to any one of [1] to [10] and curving the laminated sheet.
[19] A step of bending the laminated sheet according to any one of [1] to [10] and curving the laminated sheet,
Placing the laminated sheet in a mold such that at least one of a convex curved surface and a concave curved surface of the laminated sheet faces the mold surface at a predetermined distance away from each other;
Forming a thermoplastic resin layer in the space between the face of the laminated sheet and the mold;
A method of manufacturing a lens, including:
[20] The step of forming a thermoplastic resin layer is
The manufacturing method of the lens as described in [19] including the process of inject-molding a thermoplastic resin in the space | gap between the surface of the said lamination sheet, and a metal mold | die.

According to the laminated sheet of the present invention, since the protective layer formed on at least one surface of the polarizing layer composed of the polarizing film and the like contains the light wavelength absorber, difference in hue of the lens and lightness and darkness of the color are suppressed. Further, it is possible to provide a lens excellent in appearance and a lens excellent in polarization and light wavelength absorption.
Furthermore, since the protective layer contains the light wavelength absorber, it can be prevented that the light wavelength absorber is discarded, and the manufacturing cost can be suppressed.

  The objects described above, and other objects, features and advantages will become more apparent from the preferred embodiments described below and the following drawings associated therewith.

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 the 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 2nd embodiment.

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

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

First Embodiment
As shown in FIG. 1, the laminated sheet 10 according to the first embodiment includes a polarizing layer 12 and protective layers (first protective layer 14 a, second protective layer) laminated on both sides (12 a and 12 b) of the polarizing layer 12. And b).
The first protective layer 14 a and the second protective layer 14 b contain a thermoplastic resin, and at least one contains a light wavelength absorber.

(Polarization 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, a polyethylene-terephthalate-type polarizing film, etc. The layer thickness of the polarizing layer 12 is about 10 to 500 μm.

  A polarizing film can be produced in the following procedures. 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, the resin film is dyed with a dichroic dye or iodine. Then, it can be manufactured by uniaxially stretching the obtained film. Drying, heat treatment, and the like may be performed as necessary.

It does not specifically limit as a dichroic dye contained in a polarizing film in this embodiment, The various dichroic dye normally used for a polarizing member can be mentioned. Specific examples thereof include azo type, anthraquinone type, merocyanine type, styryl type, azomethine type, quinone type, quinophthalone type, perylene type, indigo type, tetrazine type, stilbene type, benzidine type dye and the like. In addition, Sumitomo Chemical Technology History 2002-II (issued on Nov. 30, 2002) P23-30 Technical development document of dichroic dye for liquid crystal display device, International Publication No. 2014/030603, International Publication No. 2014/030611 Those described in the specification, U.S. Patent No. 2400877, and Japanese Patent Application Publication No. 2002-527786 may also be used. In order to adjust the color tone of the color lens, the polarizing film may contain a dye other than the dichroic dye.
In the present embodiment, the polarizing layer 12 is preferably made of a polyvinyl alcohol-based polarizing film.

(Protective layer)
The first protective layer 14a and the second protective layer 14b contain a thermoplastic resin, and at least one of them contains a light wavelength absorber. In the present embodiment, the protective layer can be composed of a resin sheet or a film. The layer thicknesses of the first protective layer 14 a and the second protective layer 14 b 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 polycarbonate resins include conventionally known polycarbonate resins obtained from dihydric phenol or dihydric alcohol and carbonic diester or phosgene, and aromatic polycarbonate resin is preferable.

  Representative aromatic polycarbonate resins are 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 to be produced or a compound in which a fluorene group or the like is substituted on the alkane moiety is used.

  The molecular weight of the aromatic polycarbonate resin may be in the usual range, preferably 17,000 to 40,000 in viscosity average molecular weight from the viewpoint of formability and mechanical strength, and from the viewpoint of production by extrusion And more preferably 20,000 to 30,000.

(Triacetyl cellulose resin)
Triacetyl cellulose resin is resin obtained by acetylating cellulose resin.
The cellulose resin is a polysaccharide in which D-glucose which is a basic unit is linearly connected by β-1,4 bond. The glucose unit constituting cellulose has three hydroxyl groups at the 2, 3 and 6 positions, and these hydroxyl groups can be esterified. The esterification of the cellulose can be carried out by known methods. For example, cellulose is treated with a strong caustic soda solution and then acylated with an acid anhydride. Although the degree of substitution of the obtained cellulose acylate will be approximately 3, by hydrolyzing this, it is possible to produce a cellulose acylate having the desired degree of substitution.

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

(Polyester resin)
Examples of 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)
As acrylic resin, acrylic acid, methyl acrylate, ethyl acrylate, butyl acrylate, sodium acrylate, ammonium acrylate, 2-hydroxyethyl acrylate, methacrylic acid, methyl methacrylate, ethyl methacrylate, butyl methacrylate, What has a structural unit derived from unsaturated monomers, such as sodium methacrylate, ammonium methacrylate, 2-hydroxyethyl methacrylate, glycidyl methacrylate, acrylamide, methacrylamide, etc. are mentioned. Further, it may be obtained by copolymerizing the above-exemplified unsaturated monomers with other unsaturated monomers such as styrene, vinyl acetate, vinyl chloride, vinylidene chloride and divinylbenzene.

  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 is one that absorbs a specific wavelength, and can be at least one selected from an ultraviolet absorber and a dye that absorbs a specific wavelength in the visible light range.

(UV absorber)
As a ultraviolet absorber in this embodiment, a benzophenone series compound, a triazine series compound, a benzotriazole type compound etc. can be mentioned.

Specifically, 2,2'-dihydroxy-4-methoxybenzophenone, 2-hydroxy-4-acryloyloxybenzophenone, 2-hydroxy-4-acryloyloxy-5-tert-butylbenzophenone, 2-hydroxy-4-acryloylbenzophenone Benzophenone-based UV 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 Eto Triazine-based UV absorbers such as xylphenyl) -4,6-bis (4-phenylphenyl) -1,3,5-triazine;
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 [ Benzotriazole such as 6- (2H-benzotriazol-2-yl) -4- (1,1,3,3-tetramethylbutyl) phenol] And the like. Preferred are 2- (2H-benzotriazol-2-yl) -4-tert-octylphenol and 2- (5-chloro-2H-benzotriazol-2-yl) -4-. Mention may be made of 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 based on 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 can be included.

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

  It is preferable to use the compound represented by following General formula (1) as a tetraaza porphyrin compound.

In the general formula (1), each of A _{1 to} A ₈ independently represents 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, a linear 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 7 to 20 dialkylamino group, 7 to 20 carbon aralkyl group, 6 to 20 carbon aryl group, heteroaryl group, 6 to 20 carbon alkylthio group, 6 to 20 carbon arylthio group, A linking group may form a ring excluding an aromatic ring, and M represents 2 hydrogen atoms, an optionally substituted metal atom, or an oxy metal atom. As a metal atom, a copper atom, a nickel atom, and a cobalt atom are mentioned. Examples of trade names include FDG-004, FDG-005, FDG-006, FDG-007 manufactured by Yamada Kasei Kogyo Co., and PD-311S manufactured by Yamamoto Kasei Co., Ltd.

  In the tetraazaporphyrin compound represented by the general formula (1), M is more preferably divalent copper in the general formula (1). A specific example is a tetra-t-butyl-tetraazaporphyrin-copper complex represented by the following formula (1a), which corresponds to the product name of PD-311S (manufactured by Yamamoto Chemical Co., Ltd.).

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

  In the present embodiment, the dye that absorbs a specific wavelength in the visible light region is a thermoplastic resin, relative to the aromatic polycarbonate resin contained in the protective layer (the first protective layer 14a and the second protective layer 14b). And 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 (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 range, and the second protective layer 14b contains a UV absorber.

  In the present embodiment, when the first protective layer 14 a and the second protective layer 14 b contain the light wavelength absorber, the light wavelength absorber is compared to the case where the polarizing layer 12 contains the light wavelength absorber. Can disperse | distribute uniformly and can obtain the lamination sheet which expresses a desired effect efficiently.

The lamination sheet 10 of this embodiment can contain the compound which shows a light control property in at least one layer of the polarizing layer 12, the 1st protective layer 14a, and the 2nd 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, Arbitrary things can be suitably selected and used out of the conventionally well-known compounds which can be used for a photochromic lens. For example, one or more of spiropyran compounds, spirooxazine compounds, fulgide compounds, naphthopyran compounds and bisimidazole compounds can be used depending on the desired color.

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

[Method of manufacturing laminated sheet 10]
The lamination sheet 10 of this embodiment can be manufactured by laminating | stacking the 1st protective layer 14a and the 2nd protective layer 14b on both surfaces 12a, 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 a polarizing film and then adhering. Pressure conditions and the like in pressure bonding are appropriately selected according to 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, easy adhesion treatment, and the like. As surface treatment, gas or chemical treatment, corona discharge treatment, plasma treatment, ultraviolet ray irradiation treatment, electron beam irradiation treatment, roughening treatment, flame treatment, etc. can be mentioned, and as easy adhesion treatment, primer agent coating treatment And anchor agent coating treatment.

Second Embodiment
As shown in FIG. 2, the laminated sheet 20 of the second embodiment is
An adhesive layer (a first adhesive layer 23a, a second adhesive layer 23b) and an adhesive layer (a first adhesive layer 23a, a second adhesive layer), which are laminated on the polarizing layer 22 and both surfaces (22a, 22b) of the polarizing layer 22, respectively. And a protective layer (a first protective layer 24a, a second protective layer 24b) laminated 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 provided between the second protective layer 24 b and the polarizing layer 22. Thereby, the protective layer and the polarizing layer can be more firmly adhered.
The layer thicknesses of the first adhesive layer 23 a and the first adhesive layer 23 a may be the same or different, and are about 0.1 to 50 μm.

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

  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 24 b is on the object side, it is preferable that the second protective layer 24 b contains an ultraviolet light absorber from the viewpoint of suppressing deterioration of the polarizing layer 22 etc., and the first protective layer 24 a specifies a visible light region. It is more preferable that the second protective layer 24b contains a UV absorbing agent, and the second protective layer 24b contains a dye that absorbs the wavelength of

The laminated sheet 20 of the present embodiment is a compound exhibiting light controlability 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 the deterioration of the protective layer itself and the deterioration of the light wavelength absorber added to the protective layer, the protective layer contains a light stabilizer, an antioxidant, a heat stabilizer, a light deterioration inhibitor, a thermal 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 of Manufacturing Laminated Sheet 20]
In the laminated sheet 20 of the present embodiment, the first protective layer 24 a and the second protective layer 24 b are laminated on both surfaces 22 a and 22 b of the polarizing layer 22 via the first adhesive layer 23 a and the second adhesive layer 23 b respectively. It can be manufactured by Alternatively, the first adhesive layer 23a and the second adhesive layer 23b are formed on the surfaces of the first protective layer 24a and the second protective layer 24b, respectively, and the protective layer with the adhesive layer is laminated on both surfaces 22a and 22b of the polarizing layer 22. It can also be manufactured by

Specifically, it can be produced by forming adhesive layers on both sides of a polarizing film, and pressure-adhering a sheet or film to be a protective layer. Alternatively, it can be manufactured by forming an adhesive layer on one side of a sheet or film to be a protective layer, allowing each adhesive layer to abut on both sides of a 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 above resin material. Pressure conditions and the like in pressure bonding are appropriately selected according to 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 a surface treatment, an easy adhesion treatment, or the like. As surface treatment, gas or chemical treatment, corona discharge treatment, plasma treatment, ultraviolet ray irradiation treatment, electron beam irradiation treatment, roughening treatment, flame treatment, etc. can be mentioned, and as easy adhesion treatment, primer agent coating treatment And anchor agent coating treatment.

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

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

<First Embodiment>
The lens 10a of the present embodiment is formed of a curved laminated sheet of the first embodiment, as shown in FIG. In addition, as shown in FIG. 4, the lens 20 a of the present embodiment is formed of a curved laminated sheet of the second embodiment.
Hereinafter, the lens 10a of the present embodiment will be described.

The lens 10a can be manufactured by bending the laminated sheet 10 of the first embodiment and curving.
Specifically, the laminated sheet 10 is bent under heat and pressure so that the exposed surface of the second protective layer 14b is a convex curved surface. The heating condition and the pressure condition can be appropriately selected depending on the type and layer thickness of the resin constituting the polarizing layer. In addition, 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 pressure condition can be appropriately selected according to the type and layer thickness of the resin constituting the polarizing layer.
When the convex curved surface of the second protective layer 14b is the objective surface of the lens and the concave curved surface of the first protective layer 14a is the eyepiece surface, the first protective layer 14a may contain an optical wavelength absorber More preferably, the second protective layer 14b contains an ultraviolet absorber, and the first protective layer 14a further contains a dye that absorbs a specific wavelength in the visible light region, such as a tetraazaporphyrin compound. Thereby, the decomposition of the compound contained in the second protective layer 14b by ultraviolet light and the like can be more suitably suppressed.

  In the present embodiment, at least one of the first protective layer 14a and the second protective layer 14b of the lens 10a is provided with a coating layer, an antifogging layer, an antifouling layer, a water repellent layer, etc. May be

  The lens 20a formed 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.

Embodiment II (Lens Composed of Laminated Sheet and Thermoplastic Resin Layer)>
As shown in FIG. 5, the lens 30 of this embodiment is formed on the curved laminate sheet 10 'of the first embodiment and on 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 to the In addition, as shown in FIG. 6, the lens 40 of the present embodiment has a curved laminated sheet 20 ′ according to the second embodiment and a concave curved surface of the laminated sheet 20 ′ (a concave curved surface of the first protective layer 24 a And a thermoplastic resin layer 32 laminated on top of each other.
Hereinafter, the lens 30 of the present embodiment will be described.

The thermoplastic resin layer 32 can contain the same resin as the thermoplastic resin contained in the protective layer. The thermoplastic resin layer 32 can also contain conventionally known additives as appropriate, and can contain an 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 or the lightness and darkness of the thermoplastic resin layer 32.
The layer thickness of the thermoplastic resin layer 32 which is a lens base material is about 0.5 to 150 mm.

  In the present embodiment, as shown in FIG. 7, lamination is performed on the curved 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). Even if the lens 50 includes the thermoplastic resin layer 32 and the thermoplastic resin layer 34 further laminated on the convex curved surface (the 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 side includes an ultraviolet light absorber, and the first protective layer 24a on the eye side includes a dye that absorbs a specific wavelength in the visible light range. It is more preferable that the thermoplastic resin layer 32 be laminated on the concave curved surface (the concave curved surface of the first protective layer 24a). Thereby, the decomposition of the coloring matter contained in the second protective layer 24b can be more suitably suppressed.

  The lens 40 using the laminate sheet 20 of the second embodiment is the same as the lens 30 using the laminate sheet 10 of the first embodiment except that the laminate sheet 20 is used. Further, as in the case of the lens 50, thermoplastic resin layers can be provided on both sides of the curved laminated sheet 20 '.

The specific configuration of a preferred lens of the present embodiment will be described based on the lens 30 shown in FIG.
The lens 30 of FIG.
A polarizing film 12 made of polyvinyl alcohol, having 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 an optical wavelength absorber laminated on the concave curved surface of the polarizing film 12;
A lens base 32 including an aromatic polycarbonate resin laminated on the first protective layer 14a;
Equipped with
According to the above lens, the difference in hue of the lens and the lightness and darkness of the color are further suppressed, and further, since the protective layer contains the light wavelength absorber, the manufacturing cost can be suppressed.
The configuration described in the above-mentioned embodiment can be adopted as the configuration which does not particularly refer to the polarizing film 12, the first protective layer 14a, the second protective layer 14b, and the lens base 32.

The light wavelength absorber is at least one selected from the above-described ultraviolet light absorber and a dye that absorbs a specific wavelength of the above-described visible light region, and is a dye that absorbs a specific wavelength of the visible light region preferable. From the viewpoint of the effect of the present invention, it is more preferable to use the above-mentioned tetraazaporphyrin compound as the dye.
When the convex curved surface of the second protective layer 14b is the objective surface of the lens and the concave curved surface of the first protective layer 14a is the eyepiece surface, the first protective layer 14a may contain an optical wavelength absorber More preferably, the second protective layer 14b contains an ultraviolet absorber, and the first protective layer 14a further contains a dye that absorbs a specific wavelength in the visible light region, such as a tetraazaporphyrin compound. Thereby, the decomposition of the compound contained in the second protective layer 14b by ultraviolet light and the like can be suppressed.

In the preferred lens of this embodiment, the lens shown in FIG. 6 can be employed, which comprises an adhesive layer between the polarizing film and the protective layer.
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. It can be provided with 23b. In the present embodiment, at least the second adhesive layer 23 b is preferably provided.

[Method of manufacturing lens]
The method for producing a lens according to the present invention comprises the steps of bending a laminated sheet and curving the laminated sheet;
Placing the laminated sheet in the mold such that at least one of the convexly curved surface and the concavely curved surface of the curved laminated sheet faces the mold surface at a predetermined distance away from each other ,
Forming a thermoplastic resin layer in the space between the face of the laminated sheet and the mold.

Hereinafter, embodiments of the present invention will be described.
The method of manufacturing the lens 30 of the present embodiment includes the following steps.
Process a: The laminated sheet 10 is bent and curved.
Step b: Place the laminated sheet 10 'in the mold 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' faces the mold surface for forming the eyepiece surface of the lens at a predetermined distance apart.
Process c: 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.

Further, the method of manufacturing the lens 40 of the present embodiment includes the following steps.
Step 1: The laminated sheet 20 is bent and curved.
Step 2: The laminated sheet 20 'is disposed in the mold so that the convex curved surface of the curved laminated sheet 20' faces the mold surface for forming the objective surface of the lens The laminated sheet 20 'is placed in the mold so that the concave curved surface of the laminated sheet 20' faces the mold surface for forming the eyepiece surface of the lens at a predetermined distance apart.
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, the present embodiment will be described by a method of manufacturing the lens 30.

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

(Step b)
The curved laminated sheet 10 is then placed in a mold. Specifically, the convex curved surface (exposed surface of the second protective layer 14b) is disposed to face the mold surface for forming the objective surface of the lens, and the concave curved surface (first The laminated sheet 10 'is disposed in the mold such that the exposed surface of the protective layer 14a faces the mold surface for forming the eye surface of the lens at a predetermined distance apart. 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.

(Step c)
Then, the thermoplastic resin layer 32 is formed in the space between the concave curved surface (exposed surface of the first protective layer 14a) of the laminated sheet 10 and the mold.
The step c may include the step of injection molding a thermoplastic resin in the space between the concave curved surface of the laminated sheet 10 and the mold, whereby the thermoplastic resin on the first protective layer 14a is formed. A layer (lens substrate) can be formed.
As a thermoplastic resin contained in the said resin layer, the thermoplastic resin contained in a protective layer can be used.

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

  In addition, in order to manufacture the lens 50 shown in FIG. 7, in the said process b, the convex-shaped curved surface of curved laminated sheet 10 ', and the mold surface for forming the objective surface of a lens, and predetermined distance The laminated sheet 10 'is made of gold so that the concave curved surface of the laminated sheet 10' facing away and curved is separated from the mold surface for forming the eye 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 may be about 0.5 to 150 mm.

  Then, in the step c, the thermoplastic resin layers 32 and 34 are formed in the space between the convex curved surface of the laminated sheet and the mold and in the space between the concave curved surface and the mold. Thus, the lens 50 described in FIG. 7 can be manufactured.

In the present embodiment, a coating layer may be applied to at least one of the objective surface and the eyepiece surface of the lens as necessary.
Specific examples of the coating layer include a primer layer, a hard coat layer, an antireflective layer, a mirror coat layer, an antifogging coat layer, an antifouling layer, a water repellent layer and the like. Each of these coating layers can be used alone or as multiple coating layers can be used.

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 thermal degradation inhibitor; dyes and pigments for the purpose of enhancing the fashionability of the lens; antistatic agents; and other known additives for enhancing the performance of the lens may be used in combination.
With respect to the layer to be coated by coating, various leveling agents may be used for the purpose of improving the coatability.

  The primer layer is usually formed between the hard coat layer described later and the protective layer. The primer layer is a coating layer for the purpose of improving the adhesion between the hard coat layer formed thereon and the protective layer, and it is also possible in some cases to improve the impact resistance. Any material may be used for the primer layer as long as it has high adhesion to the protective layer, but a primer composition mainly comprising a urethane resin, an epoxy resin, a polyester resin, a melanin resin and a polyvinyl acetal as a main component Are used. The primer composition may use a suitable solvent which does not affect the lens in order to adjust the viscosity of the composition. Of course, you may use it without a solvent.

The primer layer can be formed by any of a coating method and a dry method. When a coating method is used, the primer composition is applied to a lens by a known coating method such as spin coating or dip coating, and then solidified to form a primer layer. When it is carried out by a dry method, it is formed by a known dry method such as a CVD method or a vacuum evaporation method. When forming the primer layer, the surface of the lens may be subjected to pretreatment such as alkali treatment, plasma treatment, ultraviolet treatment and the like, 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 a curable organosilicon compound and an element selected from the group of elements of Si, Al, Sn, Sb, Ta, Ce, La, Fe, Zn, W, Zr, In and Ti. A hard coat composition containing one or more kinds of fine particles composed of a composite oxide of one or more kinds of oxide fine particles and / or two or more kinds of elements selected from these element groups is used.

  Hard coat compositions include, in addition to the above components, at least amines, amino acids, metal acetylacetonate complexes, organic acid metal salts, perchloric acids, salts of perchloric acids, acids, metal chlorides and polyfunctional epoxy compounds It is preferable to include either. The hard coat composition may use a suitable solvent that does not affect the lens, or 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 coat or dip coat and then curing. As a curing method, a curing method by thermal curing, energy beam irradiation such as ultraviolet light and visible light, and the like can be mentioned. In order to suppress the generation of interference fringes, the refractive index of the hard coat layer is preferably such that the difference in refractive index with the lens is in the range of ± 0.1.

An antireflective layer is usually formed on the hard coat layer as needed. There are inorganic and organic antireflective layers, and in the case of an inorganic type, inorganic oxides such as SiO ₂ and TiO ₂ are used, and vacuum deposition, sputtering, ion plating, ion beam assist, CVD Formed by a dry process such as In the case of an organic type, it is formed by a wet process using a composition containing an organosilicon compound and silica-based fine particles having an internal cavity.

The antireflection layer has a single layer and a multilayer, and in the case of using a single layer, it is preferable that the refractive index is lower by at least 0.1 or more than the refractive index of the hard coat layer. In order to effectively exhibit the antireflective function, it is preferable to use a multilayer antireflective film, in which case low refractive index films and high refractive index films 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 films of ZnO, TiO ₂ , CeO ₂ , Sb ₂ O ₅ , SnO ₂ , ZrO ₂ , Ta ₂ O _{5 and the} like, and examples of the low refractive index film include SiO ₂ film and the like. .

  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 containing a metal layer such as Cr, Al, Ag, Au, Ni, Co, Ti on the lens surface. In addition, as a method of forming a mirror coat layer without using a metal layer, there is a method of forming a film including a mirror coat layer by a multilayer film of a transparent dielectric. The mirror coat layer is preferably disposed on the object side.

  If necessary, an antifogging layer, an antifouling layer, and a water repellent layer may be formed on the coating layer. As a method of forming an antifogging layer, an antifouling layer, and a water repellent layer, as long as it does not adversely affect the antireflective function, the treatment method, treatment material and the like are not particularly limited, and known antifogging treatment Methods, pollution control methods, water repellent methods, materials can be used. For example, in the anti-fogging treatment method and the anti-soiling treatment method, a method in which the surface is covered with a surfactant, a method in which a hydrophilic film is added to the surface to make it absorb water, a method in which the surface is covered with fine unevenness to enhance the water absorption The method of making it water absorbency using a photocatalytic activity, the method of giving super water repellent treatment, and preventing adhesion of a water droplet etc. are mentioned. In the water repellent method, a method of forming a water repellent layer by vapor deposition or sputtering of a fluorine-containing silane compound or the like, or a method of forming a water repellent layer by coating after dissolving the fluorine-containing silane compound in a solvent Etc.

  In addition, the lens 40 using the lamination sheet 20 of 2nd Embodiment can be manufactured similarly to the lens 30 using the lamination sheet 10 of 1st Embodiment except having used the lamination sheet 20. FIG. Further, as in the case of the lens 50, thermoplastic resin layers can be formed on both sides of the curved laminated sheet 20 '.

[Use]
The lens of this embodiment can form the above-mentioned coating layer suitably, and can be used for sunglasses, goggles, a correction spectacle lens, etc.
In addition, the laminated sheet 10 or 20 of the present embodiment can appropriately form the above-mentioned coating layer, and can be used as a polarizing plate, a photochromic plate, a polarization / photochromic plate or the like.

As mentioned above, although this invention was demonstrated by embodiment, the following aspects 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.

  In the first or second embodiment, an optical wavelength absorber may be contained in only one protective layer or in two protective layers, or one protective layer is formed of a resin other than a thermoplastic resin. The light wavelength absorber may be included in only one of the protective layers.

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

In the lens manufacturing method of this embodiment,
The laminated sheet 10 'is disposed in the mold such that the concave curved surface of the curved laminated sheet 10' faces the mold surface for forming the eye surface of the lens at a predetermined distance away from the mold surface, A thermoplastic resin layer can be formed in the space between the convex curved surface of the laminated sheet and the mold.

  EXAMPLES The present invention will next be described in more detail by way of examples, which should not be construed as limiting the invention thereto.

(Preparation of polycarbonate sheet (preparation of protective layer))
Bisphenol A polycarbonate resin containing 0.4% by weight of 2- (5-chloro-2H-benzotriazol-2-yl) -4-methyl-6-tert-butylphenol (trade name: SD Polyca SD 2173 M, Sumitomo Styrone polycarbonate ( Dry 10 kg (trade name) manufactured at 140 ° C for 4 hours or more, add 134 ppm of dye (trade name: PD-311S, Yamamoto Kasei Co., Ltd.) having an absorption wavelength at 585 nm, and knead at 280 ° C with an extruder. The pellet was pelletized to obtain polycarbonate pellets.
The pellets were dried at 140 ° C. for 4 hours or more, and then film-formed 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 described 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 2 mm thick plastic plate of 1 mm in thickness was dropped onto a glass substrate using spacers as a commercial PVA liquid-washing paste, and after being conditioned with a glass rod, the glass plate was placed on a hot plate and dried at 50 ° C. for 1 hour.
Separately, 0.2 g of iodine and 0.5 g of potassium iodide were added to a small amount of water, mixed and dissolved, and then this was added to 500 ml of 4% boric acid solution to prepare a staining solution.
The film after drying was immersed for about 30 seconds and then placed on a Kimwipe to absorb moisture. While the film did not dry, it was set in a tenter and stretched 3 times, and held for 30 minutes as it was and dried to obtain a polarizing film. The average visible light transmittance of the polarizing film was 30%.

(Production of laminated sheet)
A polycarbonate sheet A was bonded to one surface of the polarizing film A, and a polycarbonate sheet B was bonded to the other surface with a urethane resin adhesive to produce a laminated sheet. The visible light transmittance of 585 nm of the laminated sheet was 6.5%.
(Preparation of polarized lens)
A circular object of 81 mm in diameter made of this laminated sheet is made by a punching method, and the polycarbonate sheet B has a convex curved surface and the polycarbonate sheet A has a concave curved surface with a mold maintained at 130 ° C. Bending was performed to produce a polarized wafer. Then, base curve 6C is obtained by injection molding of bisphenol A type aromatic polycarbonate resin (trade name: SD Polyca SD2173M, manufactured by Sumitomo Stylon Polycarbonate Co., Ltd.) on the concave curved surface (surface of polycarbonate sheet A) of this polarized wafer. , A polarized lens (semi-finished product) with a center thickness of 10 mm was obtained. The obtained polarized lens was excellent in red and green contrast, and the entire surface of the lens 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 (20)

A polarizing layer,
Protective layers laminated on both sides of the polarizing layer,
Equipped with
A laminated sheet, wherein at least one of the protective layers contains a thermoplastic resin, and at least one of the protective layers contains a light wavelength absorber.   The laminated sheet according to claim 1, wherein two of the protective layers comprise the thermoplastic resin, and at least one of the protective layers comprises the light wavelength absorber.   The laminated sheet according to claim 1, wherein the two protective layers comprise 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 according to any one of claims 1 to 4, wherein 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. 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, wherein an adhesive layer is provided 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 is made of a polyvinyl alcohol-based 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 light absorber and a dye that absorbs a specific wavelength in the visible light range.   The lens which consists of a lamination sheet in any one of Claims 1-10 curved. The laminated sheet according to any one of claims 1 to 10, which is curved.
A thermoplastic resin layer laminated on at least one of a concave curved surface and a convex curved surface of the laminated sheet;
Including the lens. A polarizing film made of polyvinyl alcohol, having 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 an optical 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;
Equipped with a lens.   The lens according to claim 13, wherein the light wavelength absorber is at least one selected from an ultraviolet light absorber and a dye that absorbs a specific wavelength in the visible light range.   The lens according to claim 14, wherein the dye absorbing 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 on at least one of between the polarizing film and the first protective layer, and between the polarizing film and the second protective layer.   Sunglasses or goggles, comprising a lens according to any of claims 11-16.   The manufacturing method of a lens including the process of bending-processing the lamination sheet in any one of Claims 1-10, and curving this lamination sheet. A process of bending the laminated sheet according to any one of claims 1 to 10 and curving the laminated sheet,
Placing the laminated sheet in a mold such that at least one of a convex curved surface and a concave curved surface of the laminated sheet faces the mold surface at a predetermined distance away from each other;
Forming a thermoplastic resin layer in the space between the face of the laminated sheet and the mold;
A method of manufacturing a lens, including: The step of forming the thermoplastic resin layer is
The method for manufacturing a lens according to claim 19, comprising the step of injection molding a thermoplastic resin in a space between a face of the laminated sheet and a mold.

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