JP2020016848A - Optical resin layer and optical component - Google Patents

Abstract

To provide an optical resin layer that offers superior versatility and designability, and to provide an optical component.SOLUTION: An optical resin layer 5 of the present invention is designed to be disposed on a front surface of an eyeglass lens 4. The optical resin layer 5 includes an optically functional resin layer 50 comprising an optically transmissive resin layer 51 and a filler 52 filled in the resin layer 51 and configured to optically react to incident light L, the filler 52 being made up of particles 521 that reflect the incident light L.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an optical resin layer and an optical component.

  Lenses such as spectacles and sunglasses are made of a light-transmitting material such as a resin material or a glass material. Further, this lens includes a filler that acts optically on light transmitted through the lens (for example, see Patent Document 1).

  The sunglasses lens described in Patent Document 1 has a resin material and particles dispersed in the resin material. Therefore, a part of the light passing through the lens is reflected by the particles. As a result, when the sunglasses are viewed from the outside, they look brilliant and the design is enhanced.

  However, in the lens described in Patent Literature 1, the thickness of the resin layer as the main material is the thickness of the lens as it is. For this reason, the lens is relatively thick, and it is necessary to increase the amount of dispersed particles in order to increase the density of the particles. In this case, the cost of manufacturing the lens increases. Further, when the lens is processed by, for example, cutting, the entire particle in the cut portion is removed. As a result, in the lens, the number of particles is partially reduced, and there is a possibility that the design when viewed from the outside may be reduced.

JP 2000-066149 A

  An object of the present invention is to provide an optical resin layer and an optical component having excellent versatility and high design.

Such an object is achieved by the present invention described in the following (1) to (11).
(1) An optical resin layer used by being disposed on the front surface of an eyeglass lens,
An optical resin layer comprising: a resin layer having an optical function including a resin material having a light transmitting property and a filler filled in the resin material and acting optically on incident light.

  (2) The optical resin layer according to (1), wherein the filler includes particles having a function of reflecting the incident light.

  (3) The optical resin layer according to the above (1) or (2), wherein the filler is mainly composed of a borosilicate and a metal oxide.

  (4) The optical resin layer according to any one of (1) to (3), wherein the content of the filler is 0.001% by mass or more and 3.0% by mass or less based on the resin material.

  (5) The optical resin layer according to any one of (1) to (4), wherein the thickness of the resin layer with an optical function is 3% or more and 50% or less of the thickness of the spectacle lens.

  (6) The optical resin layer according to any one of (1) to (5), further including a protective layer provided on an incident side of the resin layer with an optical function and protecting the resin layer with an optical function.

  (7) The optical resin layer according to any one of (1) to (6), further including a polarizing layer provided on an emission side of the resin layer with an optical function and polarizing the incident light.

  (8) The optical resin layer according to (7), wherein the visible light transmittance of the polarizing layer is lower than the visible light transmittance of the resin layer with an optical function.

  (9) The optical resin layer according to (7), wherein the visible light transmittance of the polarizing layer is 7% or more and 85% or less of the visible light transmittance of the resin layer with an optical function.

(10) The visible light transmittance of the resin layer with an optical function is 70% or more and 95% or less;
The optical resin layer according to (7), wherein the visible light transmittance of the polarizing layer is 7% or more and 60% or less.

  (11) An optical component comprising: a light-transmitting substrate; and an optical resin layer according to any one of (1) to (10), which is disposed on one surface of the substrate.

  According to the present invention, it is possible to obtain an optical resin layer and an optical component that are excellent in versatility and high in design.

It is a perspective view showing sunglasses provided with the optical resin layer (1st Embodiment) of the present invention. It is an expanded sectional view of the spectacle lens (optical component) with a resin layer shown in FIG. (A) is sectional drawing of the spectacle lens with a resin layer shown in FIG. 1, (b) is sectional drawing of the conventional lens. It is sectional drawing which shows the optical resin layer (2nd Embodiment) of this invention. FIG. 5 is a cross-sectional view showing sunglasses provided with the optical resin layer and the optical component (third embodiment) of the present invention, wherein (a) shows a case where the optical resin layer is adhered to a flat spectacle lens. It is a figure which shows the case where the optical resin layer was stuck on the spectacle lens which has a curved surface in (b).

  Hereinafter, an optical resin layer and an optical component of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

<First embodiment>
FIG. 1 is a perspective view showing a sunglass provided with the optical resin layer (first embodiment) of the present invention. FIG. 2 is an enlarged sectional view of the spectacle lens with resin layer (optical component) shown in FIG. 3A is a cross-sectional view of the spectacle lens with a resin layer shown in FIG. 1, and FIG. 3B is a cross-sectional view of a conventional lens.

  In FIGS. 1 to 3, the upper side is referred to as “upper” or “upper”, and the lower side is also referred to as “lower” or “lower”. 1 to 3, when the sunglasses are worn on the head of the user, the surface of the lens on the user's eye side is referred to as the back surface, and the opposite surface is also referred to as the front surface. That is, in FIGS. 2 and 3, the upper surface is the “front (incident side) surface” and the lower surface is the “back (incident side) surface”. Further, in FIG. 2, the spectacle lens with a resin layer is illustrated in a flat plate shape, but actually has a curved shape as illustrated in FIG. Further, in FIGS. 2 and 3, the thickness direction of the optical sheet is illustrated in an exaggerated manner, but is significantly different from the actual dimensions.

  As shown in FIG. 1, the sunglasses (glasses) 1 include a frame 2 mounted on a user's head, and a spectacle lens 3 with a resin layer fixed to the frame 2. In this specification, the term “eyeglass lens” includes both a lens having a condensing function and a lens having no condensing function.

  As shown in FIG. 1, the frame 2 is mounted on the head of the user, and includes a rim portion 21, a bridge portion 22, a temple portion 23 that can be hung on the user's ear, and a nose pad portion 24. And

  Each rim portion 21 has a ring shape, and is a portion on which the spectacle lens 3 with a resin layer is mounted inside.

The bridge part 22 is a part that connects the rim parts 21.
The temple 23 has a vine shape and is connected to the edge of each rim 21. The temple portion 23 is a portion that can be hung on the user's ear.

  The nose pad portion 24 is a portion that comes into contact with the user's nose when the sunglasses 1 are worn on the user's head. Thereby, the mounting state can be stably maintained.

  The constituent material of the frame 2 is not particularly limited, and various metal materials and various resin materials can be used.

  Note that the shape of the frame 2 is not limited to the illustrated one as long as it can be mounted on the head of the user.

  The spectacle lens 3 with a resin layer is mounted on each rim portion 21. Since each spectacle lens 3 with resin layer has the same configuration, one spectacle lens 3 with resin layer will be representatively described below.

  As shown in FIG. 2, the spectacle lens 3 (optical component) with a resin layer includes a spectacle lens 4 (substrate) having a light transmitting property and an optical resin layer 5 disposed on the front surface of the spectacle lens 4. are doing.

  The spectacle lens 4 has a plate shape curved outward. The spectacle lens 4 has a lens function of condensing incident light L incident from the outside.

  The constituent material of the spectacle lens 4 is not particularly limited as long as it has optical transparency. For example, various resins such as various thermoplastic resins and various curable resins such as thermosetting resins and photocurable resins. Materials, various glass materials, and various crystals.

  Examples of the resin material include polyethylene, polypropylene, polyolefin such as ethylene-propylene copolymer, polyvinyl chloride, polystyrene, polyamide, polyimide, polycarbonate, poly- (4-methylpentene-1), ionomer, and acrylic resin. , Polymethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS resin), acrylonitrile-styrene copolymer (AS resin), butadiene-styrene copolymer, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), etc. Polyester, polyether, polyetherketone (PEK), polyetheretherketone (PEEK), polyetherimide, polyacetal (POM), polyphenylene oxide, polysulfur Polyethersulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene, polyvinylidene fluoride, other fluororesins, epoxy resins, phenolic resins, urea resins, melamine resins, silicone resins, Examples thereof include polyurethane and the like, and copolymers, blends, and polymer alloys mainly containing these, and one or more of these can be used in combination.

  The glass material is not particularly limited as long as it has light transmittance, and examples thereof include soda glass, crystalline glass, quartz glass, lead glass, potassium glass, borosilicate glass, and alkali-free glass. Can be

  In addition, the crystal material is not particularly limited as long as it has light transmittance, and examples thereof include sapphire and quartz.

The thickness _{T 4} of the spectacle lens 4 is not particularly limited, for example, 0.5 mm or more, preferably at 5.0mm or less, 1.0 mm or more, more preferably 3.0mm or less. Thereby, both relatively high strength and light weight can be achieved.

Next, the optical resin layer 5 will be described.
As shown in FIG. 2, the optical resin layer 5 (optical resin film) includes a resin layer 50 with an optical function, a polarizing layer (light transmitting resin layer) 53, and a pair of joining layers 54a and 54b (light transmitting resin). Layer) and a protective layer (light-transmitting resin layer) 55. In the optical resin layer 5, the bonding layer 54a, the polarizing layer 53, the bonding layer 54b, the resin layer with optical function 50, and the protective layer 55 are laminated in this order from the lower side (the side of the spectacle lens 4).

  The resin layer with optical function 50 has a resin layer 51 and a filler 52 filled in the resin layer 51.

  The constituent material of the resin layer 51 is not particularly limited, but may be an acrylic resin, a methacrylic resin, a polycarbonate, a polystyrene, a cyclic ether resin such as an epoxy resin or an oxetane resin, polyamide, polyimide, polybenzoxazole, or polysilane. , Polysilazane, silicone resin, fluorine resin, polyurethane, polyolefin resin, polybutadiene, polyisoprene, polychloroprene, polyester such as PET and PBT, polyethylene succinate, polysulfone, polyether, benzocyclobutene resin, Examples thereof include cyclic olefin resins such as norbornene resins, and one or more of these resins may be used in combination (as a polymer alloy, a polymer blend (mixture), a copolymer, etc.). Can.

The thickness _{T 51} of the resin layer 51 is not particularly limited, for example, 10 [mu] m or more, but preferably not more than 1500 .mu.m, 15 [mu] m or more, more preferably 1000μm or less.

By setting the thickness T ₅₁ of the resin layer 51 within the above range, it is possible to increase the design. Further, visibility can be ensured.

The thickness _{T 51} of the optical resin layer 5 is more than 3% of the thickness _{T 4} of the spectacle lens 4, is preferably 50% or less, 5% or more, more preferably 45% or less. Thereby, the optical resin layer 5 can be adhered to the spectacle lens 4 satisfactorily, and the optical characteristics of the optical resin layer 5 can be prevented from being impaired.

  The color of the resin layer 51 may be colorless or any color such as red, blue, and yellow.

  Selection of these colors is made possible by including a dye in the resin layer 51. Examples of the dye include an acid dye, a direct dye, a reactive dye, and a basic dye, and one or more selected from these can be used.

  Specific examples of the dye include, for example, C.I. I. Acid Yellow 17, 23, 42, 44, 79, 142, C.I. I. Acid Red 52, 80, 82, 249, 254, 289, C.I. I. Acid blue 9, 45, 249, C.I. I. Acid Black 1, 2, 24, 94, C.I. I. Food black 1, 2, C.I. I. Direct Yellow 1,12,24,33,50,55,58,86,132,142,144,173, C.I. I. Direct Red 1,4,9,80,81,225,227, C.I. I. Direct Blue 1, 2, 15, 71, 86, 87, 98, 165, 199, 202, C.I. I. Direct Black 19, 38, 51, 71, 154, 168, 171, 195, C.I. I. Reactive Red 14, 32, 55, 79, 249, C.I. I. Reactive Black 3, 4, 35 and the like.

  The filler 52 is composed of many particles 521 dispersed in the resin layer 51. The filler 52 is made of a material that reflects the incident light L more easily than the resin layer 51. Therefore, the incident light L can be preferentially reflected by the particles 521. The filler 52 is composed of, for example, a borosilicate and a metal oxide.

  Examples of the borosilicate constituting the filler 52 include calcium borosilicate and aluminum borosilicate.

Examples of the metal oxide constituting the filler 52 include TiO ₂ , SnO ₂ , ZnO, Fe ₂ O ₃ , Fe ₃ O ₄ , SiO ₂ , Al ₂ O ₃ , and ZrO ₂ .

  Since the filler 52 is made of a borosilicate, a metal oxide, and a material having different refractive indices, the color in which the incident light L is reflected can be made to have various chromaticities.

  Further, the particles 521 of the filler 52 are in a scale shape. Thus, for example, the area of the outer surface that functions as the reflection surface 522 that reflects the incident light L can be made as large as possible, as compared with particles having a spherical shape or the like. Therefore, when the spectacle lens 3 with the resin layer is viewed from the outside, the portion where the incident light L is seen to be reflected can be increased. As a result, the design can be improved.

  The average particle size of the particles 521 is preferably 1 μm or more and 500 μm or less, more preferably 5 μm or more and 100 μm or less. By setting the average particle size of the particles 521 of the filler 52 within the above range, the design can be improved. In addition, the unevenness of the surface of the resin layer with optical function 50 can be reduced, and external haze can be suppressed.

  Further, the content of the filler 52 is preferably 0.001% by mass or more and 3.0% by mass or less with respect to the resin layer 51, and is 0.005% by mass or more and 2.5% by mass or less. Is more preferred. By setting the content of the filler 52 in the above range, when viewed from the outside, the incident light L can be sufficiently reflected and seen, and the design can be enhanced. Further, the parallel transmittance can be kept high, and visibility can be secured.

  The color of the filler 52 may be colorless or any color such as red, blue, and yellow, but preferably has a different chromaticity from the resin layer 51. Thereby, when the spectacle lens 3 with the resin layer is viewed from the outside, it is possible to make the incident light L reflected by the particles 521 more visible. Therefore, the design is further improved.

  Further, the resin layer 51 may include an alignment aid having a function of improving the degree of alignment of the particles 521. By adjusting the content of the alignment assistant, the degree of alignment of the particles 521 can be adjusted. Therefore, the spectacle lens 3 with a resin layer can be configured so that it can be seen shining from any angle.

  The alignment aid is not particularly limited, and includes, for example, alcohols such as methanol, ethanol, propanol, n-butanol and t-butanol; carboxylic acids such as acetic acid, butyric acid and benzoic acid; and esters such as ethyl acetate and ethyl lactate. , Dimethyl phthalate, diethyl phthalate, dibutyl phthalate, di-2-ethylhexyl phthalate, diisodecyl phthalate, butyl benzyl phthalate, di-2-ethylhexyl adipate, di-n-alkyl adipate, diazeleate -2-ethylhexyl, dibutyl sebacate, di-2-ethylhexyl sebacate, tributyl phosphate, tri-2-ethylhexyl phosphate, triphenyl phosphate, tricresyl phosphate, tributyl acetyl citrate and the like.

  The polarizing layer 53 has a function of extracting linearly polarized light having a polarization plane in one predetermined direction from incident light L (natural light that is not polarized). Thereby, the incident light L entering the eye via the spectacle lens 3 with the resin layer becomes polarized.

  The degree of polarization of the polarizing layer 53 is not particularly limited, but is preferably, for example, 50% or more and 100% or less, and more preferably 80% or more and 100% or less. The visible light transmittance of the polarizing layer 53 is not particularly limited, but is, for example, preferably 10% or more and 80% or less, and more preferably 20% or more and 50% or less.

  The constituent material of the polarizing layer 53 is not particularly limited as long as it has the above function. For example, polyvinyl alcohol (PVA), partially formalized polyvinyl alcohol, polyethylene vinyl alcohol, polyvinyl butyral, polycarbonate, ethylene- A dichroic substance such as iodine or a dichroic dye is adsorbed and dyed on a polymer film composed of a vinyl acetate copolymer partially saponified product and the like, uniaxially stretched, dehydrated polyvinyl alcohol and polystyrene A polyene-based oriented film such as a dechlorinated product of vinyl chloride may be used.

  Among these, the polarizing layer 53 is preferably formed by adsorbing and dyeing iodine or a dichroic dye on a polymer film mainly composed of polyvinyl alcohol (PVA), and uniaxially stretching. Polyvinyl alcohol (PVA) is a material that is excellent in transparency, heat resistance, affinity for iodine or a dichroic dye as a dye, and orientation in stretching. Therefore, the polarizing layer 53 mainly composed of PVA has excellent heat resistance and excellent polarizing ability.

  Examples of the dichroic dye include chloratin fast red, congo red, brilliant blue 6B, benzoperpurine, chlorazole black BH, direct blue 2B, diamine green, chrysophenone, Sirius yellow, direct fast red, and acid black. And the like.

The thickness _{T 53} of the polarizing layer 53 is not particularly limited, for example, 5 [mu] m or more, preferably at 60μm or less, 10 [mu] m or more, more preferably 40μm or less. If the thickness of the polarizing layer 53 is too thick, the optical resin layer 5 as a whole tends to be thicker depending on the constituent material. On the other hand, if the polarizing layer 53 is too thin, the polarizing ability may be insufficient.

  The bonding layer 54a has a function of bonding the optical resin layer 5 to the spectacle lens 4. Further, the bonding layer 54b has a function of bonding the resin layer 50 with an optical function and the polarizing layer 53. Since the bonding layers 54a and 54b have the same configuration, the bonding layer 54a will be representatively described below.

  The bonding layer 54a is made of a light-transmitting adhesive. The pressure-sensitive adhesive is not particularly limited, and may be, for example, an acrylic pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, or the like. In particular, it is preferable that the acrylic pressure-sensitive adhesive is mainly used. Those that can exhibit higher adhesive strength to the body material are preferable.

  Examples of the acrylic pressure-sensitive adhesive include polymers mainly composed of a low Tg main monomer component for providing tackiness, a high Tg comonomer component for providing adhesiveness and cohesive strength, and a functional group-containing monomer component for crosslinking and improving adhesiveness. Alternatively, it is preferable to be composed of a copolymer.

  Examples of the main monomer component include alkyl acrylates such as ethyl acrylate, butyl acrylate, amyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, cyclohexyl acrylate and benzyl acrylate, and butyl methacrylate and methacrylic acid. And alkyl methacrylates such as 2-ethylhexyl acid, cyclohexyl methacrylate, and benzyl methacrylate.

  Examples of the comonomer component include methyl acrylate, methyl methacrylate, ethyl methacrylate, vinyl acetate, styrene, acrylonitrile, and the like.

  Examples of the functional group-containing monomer component include carboxyl group-containing monomers such as acrylic acid, methacrylic acid, maleic acid, and itaconic acid, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, and N-methylol. Examples include hydroxyl group-containing monomers such as acrylamide, acrylamide, methacrylamide, glycidyl methacrylate and the like.

  The reason why such a material is preferable is that, in addition to excellent adhesive strength and cohesive strength, there is no unsaturated bond in the polymer, so that the stability to light and oxygen is high, and the type and molecular weight of the monomer are selected to suit the application. This is because any quality and characteristics can be obtained.

  Examples of the silicone-based adhesive include dimethylsiloxane-based and diphenylsiloxane-based adhesives.

The thickness _{T 54} of the bonding layer 54a is not particularly limited, for example, 2 [mu] m or more, preferably at 50μm or less, 5 [mu] m or more, more preferably 35μm or less.

  With such a bonding layer 54a, the optical resin layer 5 can be disposed on the spectacle lens 4.

  The protective layer 55 is located on the outermost layer, that is, on the front side of the spectacle lens 3 with a resin layer, and has a function of protecting the spectacle lens 3 with a resin layer. The constituent material of the protective layer 55 is not particularly limited. For example, polyester resins such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT) and polyethylene naphthalate (PEN), and polyolefins such as polyethylene and polypropylene Various resin materials such as resins, polyimide resins, polyamide resins, polycarbonate resins, polyurethane resins, acrylic resins such as polymethyl methacrylate, acetate resins, allyl resins, and silicone resins are exemplified. Among them, a resin mainly composed of a polyamide resin, a polycarbonate resin, a polyurethane resin, an acrylic resin, an allyl resin, and a silicon resin is preferably used.

  The protective layer 55 made of these constituent materials can surely protect the resin layer 50 with an optical function.

  In particular, in the case of having excellent heat resistance, it is preferable to use a polycarbonate resin, an allyl resin, a silicon resin, or the like.

  In addition, in the case of having excellent impact resistance, it is preferable to use a polyamide resin, a polycarbonate resin, a polyurethane resin, or the like.

  Further, in the case where the abrasion resistance is excellent, it is preferable to use an allyl resin, a silicone resin, a polyurethane resin, or the like.

  Further, in the case where the weather resistance is excellent, it is preferable to use an acrylic resin, a silicon resin, or the like.

  Further, in the case of having excellent chemical resistance, it is preferable to use a polyamide resin or the like.

  Further, these resin materials have a relatively small coefficient of thermal expansion. Therefore, even if the sunglasses 1 are used in a place where the temperature is relatively high, it is possible to prevent the protective layer 55 from being deformed by heat and peeling off from the resin layer 50 with an optical function. Further, since the above-described resin material has relatively high light resistance, it is possible to prevent the protective layer 55 from being deteriorated even when the sunglasses 1 are used for a long period of time. Moreover, according to the protective layer 55, the unevenness of the surface of the resin layer 50 with an optical function can be reduced, and external haze can be suppressed.

The thickness _{T 55} of the protective layer 55 is not particularly limited, for example, 3 [mu] m or more, but preferably not more than 800 [mu] m, 7 [mu] m or more, more preferably 500μm or less.

By setting the thickness T ₅₅ of the protective layer 55 within the above range, to mitigate the irregularities of the surface of the optical functional resin coated layer 50, it is possible to suppress the external haze.

  The transmittance of the protective layer 55 is preferably 50% or more and 94% or less, and more preferably 85% or more and 93% or less.

Here, FIG. 3 is a cross-sectional view for comparing the conventional spectacle lens with resin layer 3 ′ and the spectacle lens with resin layer 3, and FIG. 3A shows the spectacle lens with resin layer 3 in the present invention. It is a figure which shows, and (b) is a figure which shows the conventional spectacle lens 4 '. The thickness (total thickness) of the spectacle lens 3 with the resin layer shown in FIG. 3A is the same as the thickness (total thickness) of the spectacle lens 4 ′ shown in FIG. a _{T 3} is.

As shown in FIG. 3 (b), 'the spectacle lens 4 having a thickness of T _3' conventional spectacle lens 4 filler 52 'is being filled. In contrast, as shown in FIG. 3 (a), the resin layer with the spectacle lens 3, the filling material 52 in a thin thickness in the resin layer 51 than the thickness T ₃ is filled. Thereby, in the spectacle lens 3 with a resin layer, when the content of the filler 52 is the same as in the related art, the density of the particles 521 of the filler 52 can be increased. Therefore, when the spectacle lens 3 with a resin layer is viewed from the outside, it is possible to increase the portion where the incident light L appears to be reflected and shining. Therefore, the design can be improved.

Further, when the spectacle lens 4 ′ is processed by removing a portion indicated by a two-dot chain line in FIG. 3B by, for example, cutting, and the degree of the spectacle lens 4 ′ is adjusted, the spectacle lens 4 ′ is dispersed into the removed portion. Filling material 52 'is also removed. Therefore, the spectacle lens 4 ', as shown in FIG. 3 (b), a portion of the thickness T _4a, thickness and part of the small thickness T _4b than T _4a is formed. As a result, in the portion of the thickness T _4a, the amount of the filler 52 'than the portion of the thickness T _4b is reduced. As a result, when viewed from the outside, the portion having the thickness T _{4a and} the portion having the thickness T _4b differ in the manner of light, and the design is impaired.

  On the other hand, in the spectacle lens 3 with a resin layer, the filler 52 is filled not in the spectacle lens 4 but in the resin layer 51. 52 can be reliably prevented from being removed. Therefore, even if the eyeglass lens 4 is processed, it is possible to prevent a change in the manner of light emission depending on the part to be viewed. As a result, high designability can be secured.

The thickness _{T 5} of the optical resin layer 5, 0.1 mm or more, preferably at 3.0mm or less, 0.15 mm or more, more preferably 1.5mm or less.

If the thickness T ₅ of the optical resin layer 5 is too thick, depending on the material, flexibility is impaired. On the other hand, if the optical resin layer 5 is too thin, there is a possibility that sagging or wrinkling may occur when being bent and deformed.

  Moreover, since the optical resin layer 5 has flexibility, even if the front surface of the spectacle lens 4 is a curved convex surface as shown in FIG. can do. That is, the optical resin layer 5 can be attached regardless of the shape of the surface of the spectacle lens 4. Therefore, the optical resin layer 5 is excellent in versatility.

  Note that the bonding layer 54a may be covered with a release sheet before being attached to the spectacle lens 4. When the release sheet is used after being peeled off from the bonding layer 54a when the optical resin layer 5 is bonded to the spectacle lens 4, dust may adhere to the bonding layer 54a before the optical resin layer 5 is bonded to the spectacle lens 4, or the adhesive strength may be reduced. Can be prevented from decreasing.

  The release sheet is not particularly limited, and examples thereof include films made of various resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene, polypropylene, and polyarylate, polyethylene laminated paper, clay coated paper, glassine paper, recycled paper, and the like. Can be used as a base material, and a release surface is applied to a bonding surface of the base material with the bonding layer 54a. In this case, typical examples of the release treatment include application and formation of a release agent layer made of a release agent such as a silicone resin, a long-chain alkyl resin, or a fluorine resin.

Further, as shown in FIG. 2, the refractive index _{N 55} of the protective layer 55, the difference between the refractive index _{N 51} of the resin layer 51 is -0.4 or more, preferably at 0.4 or less, -0 It is more preferably not less than 3 and not more than 0.3. Thereby, when the incident light L passes through the interface between the protective layer 55 and the resin layer 51, the refraction of the incident light L can be suppressed.

Further, the refractive index _{N 51} of the resin layer 51, the difference between the refractive index _{N 54} of the bonding layer 54b is -0.4 or more, preferably at 0.4 or less, -0.3 or more, 0.3 It is more preferable that: Thereby, when the incident light L passes through the interface between the resin layer 51 and the bonding layer 54b, the refraction of the incident light L can be suppressed.

Further, the difference between the refractive index _{N 53} of the bonding layer 54a, the refractive index _{N 54} of 54b and the polarizing layer 53 is -0.4 or more, preferably at 0.4 or less, -0.3 or more, 0. More preferably, it is 3 or less. This suppresses refraction of the incident light L when the incident light L passes through the interface between the bonding layer 54b and the polarizing layer 53 and when it passes through the interface between the polarizing layer 53 and the bonding layer 54a. can do.

Further, the refractive index _{N 55} of the protective layer 55, the difference between the refractive index _{N 4} of the spectacle lens 4, -0.4 or more, preferably at 0.4 or less, -0.3 or more, 0.3 It is more preferable that: Thereby, when the incident light L passes through the interface between the protective layer 55 and the spectacle lens 4, refraction of the incident light L can be suppressed.

  In the spectacle lens 3 with a resin layer, by satisfying the above numerical range, refraction of the incident light L when passing through the spectacle lens 3 with a resin layer can be effectively suppressed. Therefore, the user can prevent or suppress the surroundings from appearing distorted.

  Here, as shown in FIG. 2, a part of the incident light L is reflected by the particles 521, and when the reflected light La is viewed from the outside, the reflected light La appears to shine. In order to make the reflected light La stand out (clear), it is preferable to suppress the light other than the reflected light La from being emitted from the optical resin layer 5 as much as possible. That is, it is preferable that the amount of light Lb directed from the back surface 32 of the spectacle lens 3 with resin layer toward the front surface 31 of the spectacle lens 3 with resin layer is small.

  In the optical resin layer 5, the transmittance of the polarizing layer 53 is lower than the transmittance of the resin layer with optical function 50 (resin layer 51). Thereby, a part of the light Lb from the back surface 32 side of the spectacle lens 3 with resin layer toward the front surface 31 side of the spectacle lens 3 with resin layer can be blocked by the polarizing layer 53 (see FIG. 2). Therefore, when the spectacle lens 3 with the resin layer is viewed from the outside, portions other than the particles 521 appear relatively dark because the light Lb is blocked. As a result, the reflected light La reflected by the particles 521 can be emphasized. As described above, the optical resin layer 5 is excellent in design.

  Further, for example, when the color of the particles 521 and the color of the spectacle lens 4 are the same or similar, when viewed from the outside, the reflected light La of the particles 521 tends to be remarkably hard to see. Even in such a case, in the optical resin layer 5, when viewed from the outside, the color around the particles 521 looks darker than the particles 521, so that the reflected light La of the particles 521 looks prominent.

  Further, for example, when the color of the particle 521 is yellow, when the yellow race wears the sunglasses 1, when viewed from the outside, the color (chromaticity) of the particle 521 and the surrounding color (chromaticity) ), The reflected light La of the particles 521 tends to be remarkably hard to see. Even in such a case, in the optical resin layer 5, when viewed from the outside, the periphery of the particle 521 looks dark, so that the reflected light La of the particle 521 looks prominent.

  As described above, according to the optical resin layer 5, the reflected light La of the particles 521 can be emphasized regardless of the color of the particles 521, the color of the spectacle lens 4, and the skin color of the user.

  The transmittance of the resin layer 51 is preferably 70% or more and 95% or less, more preferably 80% or more and 90% or less.

  If the transmittance of the resin layer 51 is too large, it becomes difficult to select a material or the cost of the material tends to be high. On the other hand, if the transmittance of the resin layer 51 is too small, the incident light L is blocked too much in the resin layer 51, and as a result, the reflected light La may be weakened. As a result, the design tends to decrease.

  Further, the transmittance of the polarizing layer 53 is preferably 7% or more and 60% or less, and more preferably 8% or more and 50% or less. Thereby, both design and external visibility can be achieved.

  If the transmittance of the polarizing layer 53 is too large, the light Lb may not be able to be sufficiently blocked. For this reason, there is a possibility that the reflected light La may not be sufficiently distinguished. On the other hand, if the transmittance of the polarizing layer 53 is too small, the incident light L may be blocked more than necessary. In this case, the visibility of the outside of the sunglasses 1 in the wearing state may be reduced for the user of the sunglasses 1.

  The transmittance of the polarizing layer 53 is preferably 7% or more and 85% or less, more preferably 8% or more and 75% or less, more preferably 10% or more and 65% or less of the transmittance of the resin layer 51. It is more preferred that: Thereby, sufficient visibility of the user can be ensured while making the reflected light La stand out.

  Note that such transmittance can be measured in accordance with the method specified in JIS K 7105.

  As described above, in the present invention, the resin layer with optical function 50 is filled with the resin layer 51 (resin material) having light transmittance and the light incident on the front surface. A filler 52 that optically acts on light. Thereby, even if the eyeglass lens 4 is processed, it is possible to prevent a change in the way of shining depending on a part to be viewed, and to secure a high design.

<Second embodiment>
FIG. 4 is a sectional view showing the optical resin layer (second embodiment) of the present invention.

  Hereinafter, a second embodiment of the optical resin layer and the optical component of the present invention will be described with reference to this drawing, but the description will be focused on the differences from the above-described embodiment, and the description of the same items will be omitted. .

  This embodiment is the same as the first embodiment except that the bonding layer and the polarizing layer are omitted.

  As shown in FIG. 4, in the optical resin layer 5A, the pair of bonding layers and the polarizing layer in the first embodiment are omitted. For this reason, in the optical resin layer 5A, the resin layer 50 with an optical function and the protective layer 55 are laminated in order from the lower side in the figure, that is, from the eyeglass lens 4 side. Accordingly, the thickness of the optical resin layer 5A can be reduced and the visible light transmittance can be improved because the pair of bonding layers and the polarizing layer are omitted.

<Third embodiment>
FIG. 5 is a cross-sectional view showing sunglasses provided with an optical resin layer and an optical component (third embodiment) of the present invention, in which (a) shows a case where the optical resin layer is adhered to a flat spectacle lens. It is a figure which shows the case where the optical resin layer was stuck on the spectacle lens which has a curved surface in (b).

  Hereinafter, a third embodiment of the optical resin layer and the optical component of the present invention will be described with reference to these drawings, but the description will be focused on the differences from the above-described embodiment, and the description of the same items will be omitted. I do.

  This embodiment is the same as the second embodiment except that the direction of the particles of the filler is different.

  FIG. 5A shows an example of the incident light L incident from the direction of the arrow in the figure. As can be seen from FIG. 5A, the reflected light L ′ reflected by the particles 521 is reflected in one direction. For this reason, when viewed from the outside, the particles 521 appear to shine when viewed from the direction in which the reflected light L 'travels, but the particles 521 shine and become difficult to see when viewed from other directions.

  On the other hand, as shown in FIG. 5B, in the optical resin layer 5B, since the front surface of the spectacle lens 4 is curved, the optical resin layer 5B adhered to the front surface of the spectacle lens 4 is formed. Also follow the curve. As a result, the reflection surface 522 of the particle 521 also faces outward along the curved shape, and the direction of the reflection surface 522 differs for each particle 521.

  According to such a configuration, as shown in FIG. 5B, the incident light L is reflected in different directions for each particle 521. As a result, when the optical resin layer 5B is viewed from the outside, there are particles 521 that look shining regardless of the viewing direction. As a result, the design can be improved.

  As described above, the optical resin layer and the optical component of the present invention have been described with respect to the illustrated embodiment. However, the present invention is not limited to this, and the respective parts constituting the optical resin layer and the optical component have the same function. It can be replaced with any configuration that can be exhibited. Further, an arbitrary component may be added.

  The optical resin layer and the optical component of the present invention may be a combination of any two or more configurations (features) of the above embodiments.

  In the above-described embodiment, the filler has a function of reflecting incident light.However, the present invention is not limited to this.For example, the filler has a specific wavelength such as infrared light or ultraviolet light of incident light. It may have a function of reflecting light and transmitting other components.

  The optical resin layer may be formed integrally with the lens, or may be attached to the lens via an adhesive. Further, after laminating the optical resin layer, the polarizing layer and the base material, the optical resin layer may be joined to the lens.

  Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited thereto.

(Example 1)
<Manufacture of optical resin layer>
A 75 μm-thick polyvinyl alcohol film (trade name: “Poval VF-PS”, manufactured by Kuraray Co., Ltd.) was prepared by dissolving a dichroic dye in an aqueous solution (brilliant blue 6B having a concentration of 0.4 g / L, benzoperpurine). Staining was performed at 40 ° C. for 10 minutes in a concentration of 0.2 g / L and a concentration of chlorazole black BH of 0.1 g / L). This dyed film was immersed in an aqueous solution in which nickel acetate tetrahydrate (0.4 g / L) and boric acid (40 g / L) were dissolved at 40 ° C. for 20 minutes, and then uniaxially immersed in the solution. The film was stretched 4 times, then washed with water and dried to obtain a polarizing layer having a transmittance of 30% and a degree of polarization of 99%. The resulting thickness _{T 53} of the polarizing layer was 20 [mu] m.

  On the other hand, 100 parts by mass of polycarbonate (“E-2000N” manufactured by Mitsubishi Gas Chemical Company) and borosilicate glass particles coated with titanium oxide as a filler (“Metashine MC1030TY” manufactured by Nippon Sheet Glass Co., Ltd.) And 0.02 parts by mass to prepare a resin layer forming material with an optical function.

The material for forming a resin layer with an optical function was charged into a single-screw kneading extruder, kneaded at 250 ° C., extruded and formed into a sheet by a roll, and then cooled to obtain a resin layer with an optical function. The transmittance of the optical function with resin layer is 88%, the thickness _{T 51} was 0.7 mm.

  40 parts by mass of an ultraviolet curable acrylic monomer ("A-DPH" manufactured by Shin-Nakamura Chemical Co., Ltd.), 40 parts by mass of a urethane acrylate oligomer ("EBECRYL2000" manufactured by Daicel Ornex), and 20 parts by mass of an acrylic monomer (new 100 parts by mass together with "A-BPE-4" manufactured by Nakamura Chemical Co., Ltd .; and 5 parts by mass of a photopolymerizable material ("IRGACURE 184" manufactured by BASF) is dissolved in a solvent, and a resin layer having an optical function Was coated on one side of the film, dried, and then irradiated with ultraviolet rays to laminate a protective layer.

Then, to form a first bonding layer having a thickness T ₄ is configured on a front surface of 3mm of the spectacle lenses (Mitsubishi Gas Chemical Co., Ltd. "H-3000") in the acrylic pressure-sensitive adhesive (bonding layer 54a) . The transmittance of the spectacle lens was 82%.

  Next, a polarizing layer is stacked on the first bonding layer, and a second bonding layer (the same material as the first bonding layer) is formed on a surface of the polarizing layer opposite to the first bonding layer. The bonding layer 54b) was formed.

  Then, the laminate is laminated on the second bonding layer such that the second bonding layer and the resin layer with optical function are in contact with each other, and in that state, the first bonding layer and the second bonding layer are stacked. Was cured to produce a spectacle lens with a resin layer in which an optical resin layer was laminated on the spectacle lens.

The ratio of the thickness of the resin layer with optical function to the spectacle lens (T ₅₁ / T ₄ ) was 0.23.

(Examples 2 to 6)
Polarizing laminates of Examples 2 to 6 were obtained in the same manner as in Example 1, except that the configuration of the spectacle lens with a resin layer was changed as shown in Table 1.

  A1 in Table 1 indicates borosilicate glass coated with titanium oxide ("Metashine MC1030TY" manufactured by Nippon Sheet Glass Co., Ltd.), and A2 indicates borosilicate glass coated with titanium oxide and silicon oxide. (“Miraval 5411” manufactured by Merck & Co.).

(Comparative example)
100 parts by mass of polycarbonate (“E-2000N” manufactured by Mitsubishi Gas Chemical Company) and 0.02 parts by mass of particles of borosilicate glass coated with titanium oxide (“Metashine MC1020RSJA1” manufactured by Nippon Sheet Glass Co., Ltd.) Mixing and injection molding were performed to produce a curved lens as shown in FIG. 3B, and a lens of a comparative example was obtained.

  And grinding was performed from the curved concave side, and the degree was adjusted. The maximum depth (grinding amount) at the center was 12.5 mm.

<Evaluation>
1. Total light transmittance The total light transmittance of the resin layer with an optical function was measured according to JIS K7361-1. The symbols are as follows, ◎, △, and Δ were accepted, and × was unacceptable.

◎: 90% or more ○: 80% or more △: 70% or more ×: less than 70%

2. Visibility The visibility of the resin layer with an optical function was measured in accordance with JIS K7136. The symbols are as follows, ◎, △, and Δ were accepted, and × was unacceptable.

◎: less than 0.3% ○: 0.3% or more and less than 1.0% Δ: 1.0% or more and less than 3.0% ×: 3.0% or more

3. Diffuse reflectance (design)
In the integrating sphere diffuse reflection measurement of a V-670 spectrometer, the light reflectance at a wavelength of 560 nm was measured. The measurement was performed at five different positions, and the value (%) of the difference between the maximum value and the minimum value of the light reflectance was calculated and evaluated. The symbols are as follows, ◎, △, and Δ were accepted, and × was unacceptable.

◎: less than 0.1% ：: 0.1% or more and less than 0.3% Δ: 0.3% or more and less than 0.7% ×: 0.7% or more

4. Design The spectacle lens with a resin layer was visually observed from the front side under fine weather, and the distance from the spectacle lens with a resin layer was measured. The symbols are as follows, ◎, △, and Δ were accepted, and × was unacceptable.

◎: 2 m or more ○: 1 m or more and less than 2 m Δ: 0.5 m or more and less than 1 m ×: less than 0.5 m The results are shown in Table 1.

  The optical resin layer of each example was superior to the lens of the comparative example in terms of total light transmittance, visibility, and design.

DESCRIPTION OF SYMBOLS 1 Sunglass 2 Frame 21 Rim part 22 Bridge part 23 Temple part 24 Nose pad part 3 Eyeglass lens with resin layer 3 'Eyeglass lens with resin layer 31 Front surface 32 Back surface 4 Eyeglass lens 4' Eyeglass lens 5 Optical resin layers 5A, 5B Optical resin Layer 50 Resin layer with optical function 51 Resin layer 52 Filler 52 'Filler 521 Particles 522 Reflective surface 53 Polarizing layer 54a Joining layer 54b Joining layer 55 Protective layer L Incident light L' Reflected light La Reflected light Lb Light N4 Refractive index N51 refractive index N53 refractive index N54 refractive index N55 refractive index _{T 3} thickness _{T 4} thickness _{T 5} thickness _{T 51} thickness _{T 53} thickness _{T 54} thickness _{T 55} thickness _{T 4a} thickness _{T 4b} thickness

Claims (11)

An optical resin layer used by being disposed on the front surface of the eyeglass lens,
What is claimed is: 1. An optical resin layer comprising: a resin material having optical transparency; and a resin layer having an optical function, the resin layer being filled in the resin material and acting optically with respect to incident light.   The optical resin layer according to claim 1, wherein the filler includes particles having a function of reflecting the incident light.   The optical resin layer according to claim 1, wherein the filler is mainly composed of a borosilicate and a metal oxide.   The optical resin layer according to any one of claims 1 to 3, wherein the content of the filler is 0.001% by mass or more and 3.0% by mass or less based on the resin material.   The optical resin layer according to claim 1, wherein a thickness of the resin layer with an optical function is 3% or more and 50% or less of a thickness of the spectacle lens.   The optical resin layer according to any one of claims 1 to 5, further comprising a protective layer provided on an incident side of the resin layer with an optical function and protecting the resin layer with an optical function.   The optical resin layer according to claim 1, further comprising a polarizing layer provided on an emission side of the resin layer with an optical function and polarizing the incident light.   The optical resin layer according to claim 7, wherein the visible light transmittance of the polarizing layer is lower than the visible light transmittance of the resin layer with an optical function.   The optical resin layer according to claim 7, wherein the visible light transmittance of the polarizing layer is 7% or more and 85% or less of the visible light transmittance of the resin layer with an optical function. The visible light transmittance of the resin layer with an optical function is 70% or more and 95% or less,
The optical resin layer according to claim 7, wherein a visible light transmittance of the polarizing layer is 7% or more and 60% or less.   An optical component comprising: a substrate having a light-transmitting property; and the optical resin layer according to claim 1 disposed on one surface of the substrate.

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