WO2023190819A1 - エレクトロクロミックシート、眼鏡用レンズおよび眼鏡 - Google Patents
エレクトロクロミックシート、眼鏡用レンズおよび眼鏡 Download PDFInfo
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- WO2023190819A1 WO2023190819A1 PCT/JP2023/013068 JP2023013068W WO2023190819A1 WO 2023190819 A1 WO2023190819 A1 WO 2023190819A1 JP 2023013068 W JP2023013068 W JP 2023013068W WO 2023190819 A1 WO2023190819 A1 WO 2023190819A1
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- Prior art keywords
- electrochromic
- substrate
- conductive part
- sheet
- electrode
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/155—Electrodes
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02C7/101—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having an electro-optical light valve
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/161—Gaskets; Spacers; Sealing of cells; Filling or closing of cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
Definitions
- the present invention relates to an electrochromic sheet, an eyeglass lens, and eyeglasses.
- Optical lenses used in eyewear such as glasses and sunglasses include a polarizing film with polarizing properties and a half-mirror layer that can add design by selectively reflecting light in a specific wavelength range.
- a lens having a sheet on its surface has been proposed.
- a lens having such an optical sheet on its surface is manufactured, for example, as follows. First, an optical sheet having a flat plate shape in plan view is prepared, and protective films are attached to both sides of this optical sheet. In this state, the optical sheet is cut into pieces into individualized sheets in a predetermined shape such as a circular shape when viewed from above. Thereafter, the singulated sheet is subjected to a heat bending process under heating to obtain a curved sheet having a curved convex surface and a curved concave surface, which are formed into a curved shape by heat bending.
- the curved sheet After peeling off the protective film from this curved sheet, the curved sheet is adsorbed to a mold having a curved recess so that the recess of the mold and the convex part of the curved sheet come into contact with each other. state.
- a resin layer molded layer mainly composed of a resin material is formed on the concave surface of this curved sheet using an insert injection molding method or the like. In this way, a lens having an optical sheet on its surface is manufactured (see, for example, Patent Document 1).
- electrochromism the phenomenon in which a redox reaction occurs reversibly by applying a voltage and the color changes reversibly is called electrochromism.
- electrochromic elements using electrochromic materials exhibiting electrochromism have been proposed (see, for example, Patent Document 2).
- this electrochromic element develops color by applying a positive voltage, and decolors and becomes transparent by applying a negative voltage. For this reason, by providing an electrochromic element with a switch that can switch between applying a positive voltage and a negative voltage, it is possible to perform coloring and decoloring in the electrochromic element at any timing. become.
- this electrochromic element to the above-mentioned optical sheet, that is, by using an electrochromic sheet equipped with an electrochromic element as an optical sheet, eyewear such as glasses and sunglasses can be turned on and off with a switch. It is conceivable that by switching OFF, eyewear can be provided with lenses that can be switched between coloring and decoloring at any timing.
- this electrochromic sheet does not have a structure in which it is possible to easily know whether a defect has occurred in the electrochromic element included in the singulated sheet or curved sheet obtained during lens manufacturing. The reality was that even this was not taken into account.
- An object of the present invention is to easily detect the occurrence of defects in the electrochromic element during the manufacturing process when manufacturing a lens having an electrochromic sheet equipped with an electrochromic element using an electrochromic material exhibiting electrochromism.
- An object of the present invention is to provide an electrochromic sheet having a known structure, and highly reliable eyeglass lenses and eyeglasses equipped with such an electrochromic sheet with excellent productivity.
- the electrochromic element includes a first electrode and a first electrochromic layer that are sequentially laminated on the first substrate toward the second substrate; a second electrode and a second electrochromic layer that are sequentially laminated on the second substrate toward the first substrate; an electrolyte layer filled between the first electrochromic layer and the second electrochromic layer,
- the first electrochromic layer contains as a main material a material that becomes colored by an oxidation
- the second electrode extends from the colored region to the second conductive part in a plan view of the electrochromic sheet between the second substrate, the sealing part, and the second conductive part. patterned to reach the second conductive part and electrically connect to the second conductive part, An electrochromic sheet, wherein the first conductive part and the second conductive part are exposed at different positions in an end portion along the thickness direction of the electrochromic sheet.
- a lens for spectacles comprising the electrochromic sheet according to any one of (1) to (9), which has a curved shape, as a cutout that is cut out in accordance with the shape of the lens.
- Eyeglasses comprising the eyeglass lens described in (10) above.
- the first conductive part and the second conductive part electrically connected to the first electrode and the second electrode of the electrochromic element each have an electrochromic element. They are exposed at different positions along the edge of the sheet in the thickness direction. Therefore, during the manufacturing of eyeglass lenses, a voltage is applied between the first electrode and the second electrode via the first conductive part and the second conductive part to prepare the inside of the electrochromic sheet. , it is possible to easily know whether or not a defect has occurred in the electrochromic element. That is, the electrochromic element can be easily inspected during the manufacture of spectacle lenses.
- FIG. 1 is a perspective view showing an embodiment of sunglasses including lenses having a curved electrochromic sheet according to the present invention.
- FIG. 2 is a schematic diagram for explaining a method of manufacturing a lens having a curved electrochromic sheet according to the present invention.
- FIG. 3 is a plan view showing an embodiment of the electrochromic sheet of the present invention.
- FIG. 4 is a longitudinal cross-sectional view taken along line AA of the main portion of the electrochromic sheet shown in FIG.
- FIG. 5 is a plan view showing a lens having a curved sheet.
- FIG. 6 is a longitudinal sectional view taken along line BB of the main portion of the lens shown in FIG.
- FIG. 7 is a longitudinal sectional view showing an electrochromic element included in the electrochromic sheet shown in FIG. 3 and the lens shown in FIG. 5.
- the electrochromic sheet of the present invention includes a first substrate, a second substrate disposed opposite to the first substrate, disposed between the first substrate and the second substrate, and colored by applying a voltage. an electrochromic element disposed within the colored area; and an electrochromic element disposed in the colored area, and an outer side of the sealing part with respect to the electrochromic element, from the first substrate side to the second substrate side. a first conductive part provided to fill a first hole formed toward the substrate; and a second conductive part provided to fill a second hole formed from the second substrate side toward the first substrate side. A second conductive part.
- the electrochromic element includes a first electrode and a first electrochromic layer that are sequentially stacked on the first substrate toward the second substrate, and a first electrode and a first electrochromic layer that are stacked on the second substrate toward the first substrate.
- the electrochromic device includes a second electrode and a second electrochromic layer that are sequentially stacked, and an electrolyte layer that is filled between the first electrochromic layer and the second electrochromic layer.
- the first electrochromic layer mainly contains a material that becomes colored by an oxidation reaction
- the second electrochromic layer mainly contains a material that becomes colored by a reduction reaction.
- the first electrode extends from the colored region between the first substrate, the sealing part, and the first conductive part in a plan view of the electrochromic sheet, and is arranged to conduct the first conductive part.
- the conductive portion is patterned so as to reach the first conductive portion and be electrically connected to the first conductive portion.
- the second electrode extends from the colored region between the second substrate, the sealing part, and the second conductive part in a plan view of the electrochromic sheet, and extends from the colored area to the second conductive part.
- the conductive portion is patterned so as to reach the second conductive portion and be electrically connected to the second conductive portion.
- the first conductive portion and the second conductive portion are exposed at different positions at the end portions of the electrochromic sheet along the thickness direction.
- the first conductive part and the second conductive part electrically connected to the first electrode and the second electrode of the electrochromic element are, respectively, They are exposed at different positions along the thickness direction of the electrochromic sheet. Therefore, during the production of spectacle lenses using the electrochromic sheet of the present invention, a voltage is applied between the first electrode and the second electrode via the first conductive part and the second conductive part. This allows the electrochromic sheet to easily determine whether or not a malfunction has occurred in the electrochromic element provided therein.
- the curved sheet in which the electrochromic sheet is formed into a curved shape by applying thermal bending processing under heating can be used, for example, for sunglasses, which are a type of eyeglasses.
- sunglasses used as a curved optical sheet for lenses (lenses for eyeglasses) that can be switched between coloring and decoloring at any time by turning on/off the switch provided on sunglasses. be done. Therefore, in the following, before explaining the electrochromic sheet of the present invention, the sunglasses will be explained first.
- FIG. 1 is a perspective view showing an embodiment of sunglasses including lenses having a curved electrochromic sheet according to the present invention.
- the surface of the lenses facing the user's eyes is called the back surface, and the surface on the opposite side is called the front surface.
- the sunglasses 100 include a frame 20 and a lens 30 (lens for spectacles).
- lens (lens for spectacles) includes both lenses that have a light-gathering function and lenses that do not have a light-gatherer function.
- the frame 20 is configured to be mounted on the user's head and to place the lens 30 near the front of the user's eyes.
- This frame 20 has a rim portion 21, a bridge portion 22, a temple portion 23, and a nose pad portion 24.
- the rim part 21 has a ring shape, and one is provided for each of the right eye and the left eye, and the lens 30 is attached to the inside thereof. Thereby, the user can visually recognize external information through the lens 30.
- This lens 30 includes a curved sheet 120 that is formed into a curved shape by thermally bending the electrochromic sheet 150 of the present invention. , is configured such that coloring and decoloring are performed reversibly at arbitrary timings.
- the lens 30 is provided with connection terminals at positions corresponding to connecting portions where the bridge portion 22 and the temple portion 23 are connected to the rim portion 21 when mounted inside the rim portion 21.
- the connection terminal is electrically connected to a switch 25 and a battery 26 provided in the temple portion 23, which will be described later, via wiring.
- the bridge portion 22 has a rod shape, and when worn on the user's head, is located in front of the upper part of the user's nose and connects the pair of rim portions 21.
- the temple portion 23 has a temple shape and is connected to the edge of each rim portion 21 on the opposite side of the position where the bridge portion 22 is connected. The temple portion 23 is hung over the user's ear when worn on the user's head.
- This temple portion 23 has a switch 25 that is operable and exposed on its surface and a built-in battery 26.
- the switch 25 and the battery 26 are electrically connected to a connection terminal provided on the lens 30 via wiring. Thereby, by operating the switch 25, it is possible to apply a positive voltage and a negative voltage to the electrochromic element 60 of the curved sheet 120 included in the lens 30, and to switch between application of no voltage.
- the nose pad section 24 is provided at the edge of each rim section 21 corresponding to the user's nose when the sunglasses 100 are worn on the user's head, and comes into contact with the user's nose. It has a shape that corresponds to the contact part of the nose. Thereby, the attached state can be stably maintained.
- the constituent materials of each part constituting the frame 20 are not particularly limited, and for example, various metal materials, various resin materials, etc. can be used. Note that the shape of the frame 20 is not limited to the illustrated shape as long as it can be worn on the user's head.
- the lenses 30 (lenses for spectacles of the present invention) are attached to each rim portion 21, respectively.
- This lens 30 is a member having a light transmitting property and having a plate shape whose overall shape is curved outward, and the resin layer 35 (molded layer) and the electrochromic sheet 150 of the present invention are It has a curved sheet 120 formed into a curved shape including a curved convex surface and a curved concave surface by thermal bending.
- the resin layer 35 has light transmittance and is located on the back side of the lens, and when imparting a light condensing function to the lens 30, this resin layer 35 has a light condensing function.
- the constituent material of the resin layer 35 is not particularly limited as long as it is a resin material having light transmittance, but for example, various thermoplastic resins, thermosetting resins, various curable resins such as photocurable resins, etc. One type or a combination of two or more types of these can be used.
- resin materials include polyolefins such as polyethylene, polypropylene, and ethylene-propylene copolymers, polyvinyl chloride, polystyrene, polyamide, polyimide, polycarbonate, poly(4-methylpentene-1), ionomers, acrylic resins, Polyesters such as polymethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS resin), acrylonitrile-styrene copolymer (AS resin), butadiene-styrene copolymer, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), etc.
- polyether polyetherketone (PEK), polyetheretherketone (PEEK), polyetherimide, polyacetal (POM), polyphenylene oxide, polysulfone, polyethersulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer) ), polytetrafluoroethylene, polyvinylidene fluoride, other fluororesins, epoxy resins, phenol resins, urea resins, melamine resins, silicone resins, polyurethanes, etc., or copolymers, blends, polymer alloys, etc.
- the resin material is the same kind or the same as the resin material that mainly constitutes the first substrate 11 of the curved sheet 120 described below.
- the resin material is the same kind or the same as the resin material that mainly constitutes the first substrate 11 of the curved sheet 120 described below.
- the refractive index difference between the resin layer 35 and the curved sheet 120 (first substrate 11) can be set low, light is prevented from being diffusely reflected between the resin layer 35 and the curved sheet 120. Since this can be accurately suppressed or prevented, light can be transmitted between the resin layer 35 and the curved sheet 120 with excellent light transmittance.
- the refractive index difference between the resin layer 35 and the first substrate 11 included in the curved sheet 120 is preferably 0.2 or less, and more preferably 0.1 or less. Thereby, the effect obtained by setting the refractive index difference to a low value can be more clearly exhibited.
- the thickness of the resin layer 35 is not particularly limited, and is preferably, for example, 0.5 mm or more and 5.0 mm or less, and more preferably 1.0 mm or more and 3.0 mm or less. Thereby, the lens 30 can achieve both relatively high strength and weight reduction.
- the curved sheet 120 is composed of an electrochromic sheet 150 that is curved and bonded to the outer surface of the resin layer 35, that is, the curved convex surface, in a curved shape corresponding to the shape.
- the sunglasses 100 can be reversibly colored and decolored at any timing by switching the application of voltage to the electrochromic element 60 included in the electrochromic sheet 150.
- the functions that can be used are given.
- the curved sheet 120 has a configuration in which the electrochromic sheet 150 of the present invention has a curved shape, but a detailed explanation of the electrochromic sheet 150 will be given later.
- the lens 30 included in the sunglasses 100 may be either a lens that has a light-gathering function or a lens that does not have a light-gathering function.
- the sunglasses 100 may have a frameless configuration from the viewpoint of fashionability, lightness, etc.
- the glasses including the lenses 30 are applied to the sunglasses 100, but the glasses are not limited to this, and can be used, for example, to prevent prescription glasses, fancy glasses, wind and rain, dust, chemicals, etc. It may also be goggles or the like to protect the eyes.
- the lenses 30 included in the sunglasses 100 are manufactured by, for example, a method for manufacturing lenses 30 as shown below.
- FIG. 2 is a schematic diagram for explaining a method of manufacturing a lens having a curved electrochromic sheet according to the present invention.
- FIG. 3 is a plan view showing an embodiment of the electrochromic sheet of the present invention.
- FIG. 4 is a longitudinal cross-sectional view taken along line AA of the main portion of the electrochromic sheet shown in FIG.
- FIG. 5 is a plan view showing a lens having a curved sheet.
- FIG. 6 is a longitudinal sectional view taken along line BB of the main portion of the lens shown in FIG.
- FIG. 7 is a longitudinal sectional view showing an electrochromic element included in the electrochromic sheet shown in FIG. 3 and the lens shown in FIG. 5.
- the curved sheet 120 actually has a curved shape, but for convenience of explanation, it is shown as having a flat plate shape.
- first substrate 11 has a first substrate 11, a second substrate 12, a sealing part 55, and an electrochromic element 60, and has a plurality of electrochromic elements provided corresponding to colored regions 70 partitioned by the sealing part 55.
- An element sealing connection sheet 110 in which a chromic element 60 is sandwiched between a first substrate 11 and a second substrate 12 is prepared.
- the plurality of electrochromic devices 60 are connected via the sealing portion 55 between the first substrate 11 and the second substrate 12. It is sealed with a sealing part 55.
- a protective film 50 (masking tape) is attached to both sides of this element-sealing connecting sheet 110, thereby obtaining a connecting sheet laminate 210 in which the protective film 50 is attached to both sides of the element-sealing connecting sheet 110 ( (See Figure 2(a)).
- connection sheet laminate 210 that is, with the protective film 50 attached to both sides of the element-sealing connection sheet 110, is attached to the element-sealing connection sheet. 110 is punched out in the thickness direction corresponding to each electrochromic element 60.
- the connecting sheet laminate 210 is separated into pieces, and an element laminate 250 having a circular shape in plan view is obtained. That is, an electrochromic sheet 150 is obtained which is separated into circular pieces corresponding to each electrochromic element 60 with the protective film 50 attached to both sides (see FIGS. 3 and 4).
- the element laminate 250 cut into circular pieces is thermally bent under heating, so that the element laminate 250 is
- the curved element stack 220 has a curved shape in which one side is a concave curved surface and the other side is a convex curved surface.
- the electrochromic sheet 150 having a flat plate shape can be made into the curved sheet 120 having a curved shape with the protective film 50 attached to both sides.
- the heating temperature (molding temperature) of the element laminate 250 (electrochromic sheet 150) is as described below. In consideration of the softening temperature, it is preferably set to about 110°C or more and 170°C or less, more preferably about 130°C or more and 160°C or less. By setting the heating temperature within this range, alteration and deterioration of the electrochromic sheet 150 is prevented, the electrochromic sheet 150 is softened or melted, and the electrochromic sheet 150 is reliably thermally bent to form a curved shape.
- the curved sheet 120 can be made into a shape.
- the protective film 50 is peeled off from the curved sheet 120 that has been thermally bent. Thereafter, as shown in FIG. 2(d), the curved concave surface of the mold 40 and the curved convex surface of the curved sheet 120 are brought into contact with the mold 40 having a curved concave surface.
- a resin layer 35 (molding layer) mainly composed of a resin material is injection molded onto the curved concave surface of the curved sheet 120 using, for example, an insert injection molding method.
- a lens 30 (a spectacle lens of the present invention) including a thermally bent curved sheet 120 and a resin layer 35 is manufactured.
- the heating temperature (molding temperature) of the constituent material of the resin layer 35 to bring it into a molten state is set as appropriate depending on the type of constituent material of the resin layer 35.
- the temperature is preferably about 180°C or more and about 320°C or less, more preferably about 230°C or more and about 300°C or less. is set to By setting the heating temperature within this range, the constituent material of the resin layer 35 in a molten state can be reliably supplied to the curved concave surface of the curved sheet 120.
- the injection compression molding method is preferably used.
- a resin material for forming the resin layer 35 is injected into a mold 40 at low pressure, and then the mold is closed at high pressure 40 to apply compressive force to the resin material.
- This is preferably used because optical anisotropy due to molding distortion or local orientation of resin molecules during molding is less likely to occur in the resin layer 35 as a molded body, and thus in the lens 30.
- the resin material can be cooled at a constant specific volume, so it is possible to obtain the resin layer 35 with high dimensional accuracy.
- the manufactured lens 30 is subjected to a trimming process in which its edge is cut so that its shape matches the shape of the inside of the rim part 21, and then this
- the sunglasses 100 are used by attaching the lens 30 (cutout) to the inside of the rim portion 21.
- the element sealing connection sheet 110 is cut into circular pieces, thereby obtaining the electrochromic sheet 150.
- the electrochromic sheet 150 thus obtained is formed by forming the curved sheet 120 by heat bending the electrochromic sheet 150 in the step [3], or by forming the electrochromic sheet 150 into a curved shape in the step [4].
- the formation of the resin layer 35 on the curved concave surface of the curved sheet 120 causes a malfunction (error) in the electrochromic element 60 provided inside the electrochromic sheet 150 due to the curved shape or thermal history. This may occur.
- the sunglasses 100 can be produced with high yield.
- the electrochromic sheet 150 of the present invention provides that the first conductive part 17 and the second conductive part 18 electrically connected to the first electrode 13 and the second electrode 14 of the electrochromic element 60 are They are exposed at different positions at the ends of the electrochromic sheet 150 in the thickness direction.
- the first conductive part 17 and the second conductive part 18 exposed at the end along the thickness direction of the electrochromic sheet 150 are connected to each other.
- the electrochromic sheet 150 can easily test the electrochromic element 60 provided therein. Therefore, it is possible to easily know whether or not a malfunction has occurred in the electrochromic element 60 provided inside the electrochromic sheet 150. Therefore, the lenses 30 and sunglasses 100 can be produced with high yield, that is, the lenses 30 and sunglasses 100 with excellent reliability can be produced with excellent productivity.
- This electrochromic sheet 150 will be explained in detail below.
- the electrochromic sheet 150 includes the first substrate 11, the second substrate 12, the sealing part 55, the electrochromic element 60, and the first conductive part 17, as shown in FIGS. 3 and 4. , a second conductive part 18 , a third conductive part 51 , a fourth conductive part 52 , a first auxiliary electrode 15 , and a second auxiliary electrode 16 .
- the first substrate 11 supports other members including the electrochromic element 60, and the other members including the electrochromic element 60 are disposed between the first substrate 11 and the second substrate 12. It constitutes the outermost layer of the sheet 150 and has a function as a protective layer that protects the electrochromic element 60 and the like.
- the first substrate 11 and the second substrate 12 constitute the outermost layer of the electrochromic sheet 150, so that other members including the electrochromic element 60 are exposed on the surface of the electrochromic sheet 150. I haven't. Therefore, when a curved sheet 120 made of the electrochromic sheet 150 is applied as a component of the lens 30, dust or even rain may collide with the electrochromic element 60. It is possible to reliably prevent the parts from being worn out by other members or the like. Therefore, it is possible to reliably prevent this collision or friction from adversely affecting the characteristics of the electrochromic element 60.
- This first substrate 11 is not particularly limited as long as it is mainly composed of a transparent resin material, but preferably contains a thermoplastic transparent resin (base resin) as its main material.
- the main material refers to a material whose content in the constituent elements is 50% by mass or more.
- the transparent resin examples include, but are not limited to, acrylic resins, polystyrene resins, polyethylene resins, polypropylene resins, polyester resins such as polyethylene terephthalate (PET), and polyethylene naphthalate (PEN), and polycarbonate resins. , polyamide resins, cycloolefin resins, vinyl chloride resins, polyacetal resins, and other transparent resins, and one type or a combination of two or more of these can be used. Among these, polycarbonate resins or polyamide resins are preferred, and polycarbonate resins are particularly preferred. Polycarbonate resin has high mechanical strength such as transparency (translucency) and rigidity, and also has high heat resistance. Therefore, by using polycarbonate resin as the transparent resin, the transparency of the first substrate 11 and the The impact resistance and heat resistance of the substrate 11 can be improved.
- acrylic resins acrylic resins
- polystyrene resins polyethylene resins
- polypropylene resins polyester resins such as polyethylene terephthal
- polycarbonate resin Various resins can be used as the polycarbonate resin, but aromatic polycarbonate resins are particularly preferred.
- the aromatic polycarbonate resin has an aromatic ring in its main chain, and as a result, the first substrate 11 having superior strength can be obtained.
- This aromatic polycarbonate resin is synthesized, for example, by interfacial polycondensation reaction between bisphenol and phosgene, transesterification reaction between bisphenol and diphenyl carbonate, and the like.
- bisphenol examples include bisphenol A and bisphenol (modified bisphenol) which is the origin of the repeating unit of polycarbonate shown in the following formula (1A).
- X is an alkyl group having 1 to 18 carbon atoms, an aromatic group, or a cycloaliphatic group
- Ra and Rb are each independently an alkyl group having 1 to 12 carbon atoms.
- m and n are each integers from 0 to 4, and p is the number of repeating units.
- bisphenol that is the origin of the repeating unit of the polycarbonate shown in the formula (1A) include 4,4'-(pentane-2,2-diyl)diphenol, 4,4'-( Pentane-3,3-diyl)diphenol, 4,4'-(butane-2,2-diyl)diphenol, 1,1'-(cyclohexanediyl)diphenol, 2-cyclohexyl-1,4-bis( 4-hydroxyphenyl)benzene, 2,3-biscyclohexyl-1,4-bis(4-hydroxyphenyl)benzene, 1,1'-bis(4-hydroxy-3-methylphenyl)cyclohexane, 2,2'- Examples include bis(4-hydroxy-3-methylphenyl)propane, and one or more of these may be used in combination.
- the main component is a bisphenol type polycarbonate resin having a skeleton derived from bisphenol.
- the first substrate 11 exhibits even better strength.
- the first substrate 11 has light transmittance
- its color may be colorless, red, blue, yellow, or any other color.
- These colors can be selected by including dye or pigment in the first substrate 11.
- the dye include acid dyes, direct dyes, reactive dyes, and basic dyes, and one type or a combination of two or more types selected from these can be used.
- dyes include C.I. I. Acid Yellow 17, 23, 42, 44, 79, 142, C. I. Acid Red 52, 80, 82, 249, 254, 289, C. I. Acid Blue 9,45,249, C. I. Acid Black 1, 2, 24, 94, C. I. Hood black 1, 2, C. I. Direct Yellow 1, 12, 24, 33, 50, 55, 58, 86, 132, 142, 144, 173, C. I. Direct Red 1, 4, 9, 80, 81, 225, 227, C. I. Direct Blue 1, 2, 15, 71, 86, 87, 98, 165, 199, 202, C. I. Direct black 19, 38, 51, 71, 154, 168, 171, 195, C. I. Reactive Red 14,32,55,79,249, C. I. Examples include Reactive Black 3, 4, 35, etc.
- the first substrate 11 may optionally contain, in addition to the above-mentioned transparent resin, dye, or pigment, an antioxidant, a filler, a plasticizer, a light stabilizer, an ultraviolet absorber, a heat ray absorber, a flame retardant, etc. It may contain various additives.
- this first substrate 11 may or may not be stretched.
- the refractive index of the first substrate 11 at a wavelength of 589 nm is preferably 1.3 or more and 1.8 or less, more preferably 1.4 or more and 1.65 or less.
- the electrochromic element 60 can be switched between coloring (coloring) and decoloring at any timing by turning the switch 25 ON/OFF. It is possible to accurately suppress or prevent inhibition of the functions of
- the average thickness of the first substrate 11 is preferably set to 0.1 mm or more and 10.0 mm or less, more preferably 0.3 mm or more and 5.0 mm or less. By setting the average thickness of the first substrate 11 within this range, it is possible to reduce the thickness of the electrochromic sheet 150 while accurately suppressing or preventing the electrochromic sheet 150 from being bent.
- the second substrate 12 is disposed to face the first substrate 11 and supports other members including the electrochromic element 60, and also has an electrochromic element between the first substrate 11 and the second substrate 12. It constitutes the outermost layer of the electrochromic sheet 150 on which other members including the electrochromic element 60 are arranged, and has a function as a protective layer that protects the electrochromic element 60.
- the first substrate 11 and the second substrate 12 constitute the outermost layer of the electrochromic sheet 150, so that other members including the electrochromic element 60 are exposed on the surface of the electrochromic sheet 150. I haven't. Therefore, when a curved sheet 120 made of the electrochromic sheet 150 is applied as a component of the lens 30, dust or even rain may collide with the electrochromic element 60. It is possible to reliably prevent the parts from being worn out by other members or the like. Therefore, it is possible to reliably prevent this collision or friction from adversely affecting the characteristics of the electrochromic element 60.
- the second substrate 12 can be made of the same materials as those mentioned for the first substrate 11. Note that the constituent material of the second substrate 12 and the constituent material of the first substrate 11 may be the same (same type) or may be different.
- the second substrate 12 may or may not be stretched.
- the refractive index of the second substrate 12 at a wavelength of 589 nm may be the same as or different from the refractive index n1 of the first substrate 11, but it is preferably 1.3 or more and 1.8 or less. is preferable, and more preferably 1.4 or more and 1.65 or less.
- the average thickness of the second substrate 12 may be the same or different from that of the first substrate 11, but is preferably, for example, 0.1 mm or more and 10.0 mm or less, More preferably, it is 0.3 mm or more and 5.0 mm or less. By setting the average thickness of the second substrate 12 within this range, it is possible to reduce the thickness of the electrochromic sheet 150 while accurately suppressing or preventing bending of the electrochromic sheet 150.
- the electrochromic element 60 is a light emitting element that can be switched between coloring (coloring) and decoloring at any timing by turning the switch 25 ON/OFF, and is provided in a colored area 70 partitioned by the sealing part 55. It is being
- the electrochromic element 60 includes a first electrode 13 and a first electrochromic layer 63, which are sequentially laminated on the first substrate 11 toward the second substrate 12 side, and on the second substrate 12. , an electrolyte layer filled between the second electrode 14 and the second electrochromic layer 64, which are sequentially stacked toward the first substrate 11 side, and the first electrochromic layer 63 and the second electrochromic layer 64. 65 (see FIG. 7).
- the first electrode 13 and the second electrode 14 each transfer electrons between the first electrode 13 and the second electrode 14 when a positive voltage or a negative voltage is applied to the electrochromic element 60 by switching the switch 25. It is an electrode that supplies or receives electrons from between the first electrode 13 and the second electrode 14.
- the constituent materials of the first electrode 13 and the second electrode 14 are not particularly limited as long as they are transparent conductive materials, and examples thereof include ITO (Indium Tin Oxide), FTO (F-doped Tin Oxide), and ATO. (Antimony Tin Oxide), IZO (Indium Zinc Oxide), In 2 O 3 , SnO 2 , Sb-containing SnO 2 , Al-containing ZnO and other oxides, Au, Pt, Ag, Cu, or alloys containing these. , these can be used alone or in combination of two or more.
- the average thickness of the first electrode 13 and the second electrode 14 is adjusted so that the electrical resistance value necessary for the redox reaction of the electrochromic layers 63 and 64 is obtained.
- the thickness is preferably set to be approximately 50 nm or more and 200 nm or less, and more preferably approximately 100 nm or more and 150 nm or less, each independently.
- the first electrochromic layer 63 is a layer that contains as a main material a material that becomes colored by an oxidation reaction, and is thereby colored.
- the material that is included as a main material in the first electrochromic layer 63 and exhibits coloring due to an oxidation reaction is not particularly limited, and may be, for example, a polymer obtained by polymerizing a composition containing a radically polymerizable compound having triarylamine. , bis-acridan compounds, Prussian blue type complexes, and nickel oxides, and one or more of these may be used in combination.
- Examples of the polymer obtained by polymerizing a composition containing a radically polymerizable compound having a triarylamine include the polymers described in JP-A No. 2016-45464, JP-A No. 2020-138925, and the like.
- Prussian blue type complex for example, a material consisting of Fe(III) 4 [Fe(II)(CN) 6 ] 3 can be mentioned.
- polymers obtained by polymerizing compositions containing radically polymerizable compounds having triarylamine are particularly preferred because they can be operated at a constant voltage, have excellent cyclic durability, and provide high-contrast electrochromic elements. is preferably used.
- composition containing the radically polymerizable compound having triarylamine contains other radically polymerizable compounds different from the radically polymerizable compound having triarylamine, and the polymer obtained by polymerizing such a composition contains these radically polymerizable compounds. It may be composed of a crosslinked product obtained by crosslinking radically polymerizable compounds.
- the average thickness of the first electrochromic layer 63 is not particularly limited, but is preferably about 0.1 ⁇ m or more and 30 ⁇ m or less, more preferably about 0.4 ⁇ m or more and 10 ⁇ m or less.
- the second electrochromic layer 64 is a layer that contains as a main material an electrochromic material that changes from transparent to colored by a reduction reaction, and is thereby colored.
- the second electrochromic layer 64 uses a lectrochromic material having the same color tone as the first electrochromic layer 63. As a result, the maximum color density can be improved, and as a result, the contrast can be improved.
- the driving voltage of the electrochromic element 60 can be effectively reduced. The repeated durability can be improved.
- the material that is contained as a main material in the second electrochromic layer 64 and exhibits coloring through a reduction reaction is not particularly limited, and examples thereof include inorganic electrochromic compounds, organic electrochromic compounds, conductive polymers, etc. One type or a combination of two or more types can be used.
- the inorganic electrochromic compound examples include tungsten oxide, molybdenum oxide, iridium oxide, titanium oxide, etc. Among them, tungsten oxide is preferred. Tungsten oxide is preferably used because it has a low coloring/decoloring potential due to its low reduction potential and is excellent in durability since it is an inorganic material.
- organic electrochromic compounds examples include azobenzene, anthraquinone, diarylethene, dihydroprene, dipyridine, styryl, styrylspiropyran, spirooxazine, spirothiopyran, thioindigo, tetrathiafulvalene, and terephthalene.
- Examples of viologen-based compounds include compounds described in Japanese Patent No. 3955641, Japanese Patent Application Publication No. 2007-171781, and the like. Further, examples of dipyridine compounds include compounds described in JP-A No. 2007-171781, JP-A No. 2008-116718, and the like.
- examples of the conductive polymer include polypyrrole, polythiophene, polyaniline, and derivatives thereof.
- the average thickness of the second electrochromic layer 64 is not particularly limited, but is preferably about 0.2 ⁇ m or more and 5.0 ⁇ m or less, more preferably about 1.0 ⁇ m or more and 4.0 ⁇ m or less. . If the average thickness is less than 0.2 ⁇ m, it may be difficult to obtain color density depending on the type of electrochromic material, and if it exceeds 5.0 ⁇ m, the manufacturing cost increases and the electrochromic material Depending on the type, coloring may reduce visibility.
- the electrolyte layer 65 is filled between the first electrochromic layer 63 and the second electrochromic layer 64 and contains an electrolyte having ionic conductivity.
- This electrolyte is not particularly limited, but includes, for example, inorganic ion salts such as alkali metal salts and alkaline earth metal salts, quaternary ammonium salts, and supporting salts of acids and alkalis.
- inorganic ion salts such as alkali metal salts and alkaline earth metal salts, quaternary ammonium salts, and supporting salts of acids and alkalis.
- ionic liquids can also be used as electrolyte materials.
- organic ionic liquids are preferably used because they have a molecular structure that exhibits a liquid state in a wide temperature range including room temperature and are easy to handle.
- the molecular structure of the organic ionic liquid as a cationic component, for example, imidazole derivatives such as N,N-dimethylimidazole salt, N,N-methylethylimidazole salt, N,N-methylpropylimidazole salt; N,N -Pyridinium derivatives such as dimethylpyridinium salt and N,N-methylpropylpyridinium salt; and aliphatic quaternary ammonium derivatives such as trimethylpropylammonium salt, trimethylhexylammonium salt, and triethylhexylammonium salt.
- imidazole derivatives such as N,N-dimethylimidazole salt, N,N-methylethylimidazole salt, N,N-methylpropylimidazole salt
- N,N -Pyridinium derivatives such as dimethylpyridinium salt and N,N-methylpropylpyridinium salt
- anion component it is preferable to use a compound containing fluorine in consideration of stability in the atmosphere, such as BF 4 - , CF 3 SO 3 - , PF 4 - , (CF 3 SO 2 ) 2 N -, etc.
- the material for such an electrolyte is preferably an ionic liquid containing any combination of cationic and anionic components.
- the ionic liquid may be directly dissolved in any of the photopolymerizable monomers, oligomers, and liquid crystal materials. If the solubility of these materials is poor, obtain a solution by dissolving it in a small amount of solvent, and then dissolve it by mixing this solution with any of the photopolymerizable monomers, oligomers, and liquid crystal materials. Good too.
- Examples of the solvent include propylene carbonate, acetonitrile, ⁇ -butyrolactone, ethylene carbonate, sulfolane, dioxolane, tetrahydrofuran, 2-methyltetrahydrofuran, dimethylsulfoxide, 1,2-dimethoxyethane, 1,2-ethoxymethoxyethane, polyethylene glycol, Examples include alcohols and mixed solvents thereof.
- the electrolyte filled as the electrolyte layer 65 between the first electrochromic layer 63 and the second electrochromic layer 64 may be a low-viscosity liquid, or may be, for example, a gel type, polymer crosslinked type, or liquid crystal. It is possible to take various forms such as a distributed type. Among these, it is preferable that the electrolyte be formed in a gel or solid form. Thereby, it is possible to improve the element strength and reliability of the electrochromic element 60.
- a preferable method for making the electrolyte layer 65 into a solid state is, for example, a method in which a liquid containing an electrolyte and a solvent is held in a polymer resin. Thereby, both high ionic conductivity and solid strength of the electrolyte layer 65 can be obtained.
- the polymer resin for example, a photocurable resin is preferable. As a result, it is possible to obtain the solid electrolyte layer 65 and the electrochromic element 60 at a lower temperature and in a shorter time than in the case where the solid electrolyte layer 65 is obtained by thermal polymerization or solvent vaporization. can.
- the average thickness of the electrolyte layer 65 is not particularly limited, but is preferably set to about 20 ⁇ m or more and 100 ⁇ m or less, more preferably about 40 ⁇ m or more and 80 ⁇ m or less.
- an intermediate layer such as an insulating porous layer or a protective layer may be provided between each layer between the first electrode 13 and the second electrode 14, for example.
- the electrochromic element 60 By configuring the electrochromic element 60 as described above, it is possible to switch between coloring (coloring) and decoloring at any timing by turning the switch 25 ON/OFF.
- the sealing portion 55 is disposed between the first substrate 11 and the second substrate 12 and has a function of dividing a colored region 70 and sealing the electrochromic element 60 within this colored region 70. There is.
- the material constituting the sealing portion 55 is not particularly limited as long as it is a transparent insulating material, but examples include resin materials such as acrylic resin and epoxy resin, silicon oxide (SiO 2 ), and silicon acid. Examples include inorganic oxides such as nitride (SiON) and aluminum oxide (Al 2 O 3 ).
- the average thickness of the sealing portion 55 is adjusted according to the average thickness of the electrochromic element 60, and is preferably set to about 20 ⁇ m or more and 100 ⁇ m or less, more preferably about 40 ⁇ m or more and 80 ⁇ m or less.
- the electrochromic sheet 150 has a structure in which the electrochromic element 60 is arranged in the colored region 70 partitioned by the sealing part 55 between the first substrate 11 and the second substrate 12. .
- the first electrode 13 and the second electrode 14 of the electrochromic element 60 are connected to the lens 3 using the electrochromic sheet 150, as shown in FIGS. 3 to 6, respectively.
- a colored region 70 defined by a sealing portion 55 is formed at a position corresponding to a connecting portion where the bridge portion 22 and the temple portion 23 are connected to the rim portion 21 when the rim portion 21 is attached to the inside of the rim portion 21. It is extended (extended) and routed as patterned wiring.
- the first conductive part 17 is a through-hole provided as a wiring that passes through the sealing part 55 so as to overlap the first electrode 13 extending from the colored region 70 in a plan view. It is provided so as to fill the first hole portion 53 which is a hole. That is, the first electrode 13 provided as a wiring beyond the colored region 70 between the first substrate 11 , the sealing part 55 and the first conductive part 17 is connected until it reaches the first conductive part 17 . It is stretched.
- the first conductive part 17 is electrically connected to the first electrode 13 via the first auxiliary electrode 15, and further has an electrochromic When the lens 30 is formed using the sheet 150 and mounted inside the rim portion 21, it is exposed at a position on the bridge portion 22 side (the right side in FIGS. 3 and 4).
- the second conductive portion 18 is a through hole provided as a wiring through the sealing portion 55 so as to overlap the second electrode 14 extending from the colored region 70 in a plan view. It is provided so as to fill the second hole portion 54. That is, the second electrode 14 provided as a wiring beyond the colored region 70 between the second substrate 12, the sealing part 55, and the second conductive part 18 is connected until it reaches the second conductive part 18. It is stretched.
- the second conductive part 18 is electrically connected to the second electrode 14 via the second auxiliary electrode 16, and further has an electrochromic When the lens 30 is formed using the sheet 150 and mounted inside the rim portion 21, it is exposed at a position on the temple portion 23 side (left side in FIGS. 3 and 4).
- first conductive part 17 and the second conductive part 18 are exposed at different positions, such as the bridge part 22 side and the temple part 23 side, at the end portion along the thickness direction of the electrochromic sheet 150.
- the first conductive portion 17 and the second conductive portion 18 are electrically connected to the first electrode 13 and the second electrode 14, respectively.
- a voltage is applied between the first electrode 13 and the second electrode 14 via the first conductive part 17 and the second conductive part 18 exposed at the end along the thickness direction of the electrochromic sheet 150. It is possible. That is, the first conductive part 17 and the second conductive part 18 can be used as terminals when applying a voltage between the first electrode 13 and the second electrode 14. Therefore, after the step [3] or after the step [4], a voltage is applied between the first electrode 13 and the second electrode 14 via the first conductive part 17 and the second conductive part 18. By applying the voltage, the electrochromic sheet 150 can easily test the electrochromic element 60 provided therein. Therefore, it is possible to easily know whether or not a malfunction has occurred in the electrochromic element 60 provided inside the electrochromic sheet 150.
- the constituent materials of the first conductive part 17 and the second conductive part 18 are not particularly limited as long as they are conductive materials, but examples include conductive pastes such as silver paste, as well as metals such as gold and copper. or its alloys.
- the average thickness of the first conductive portion 17 and the second conductive portion 18 is preferably set to be approximately 20 ⁇ m or more and 100 ⁇ m or less, and more preferably approximately 40 ⁇ m or more and 80 ⁇ m or less, respectively.
- the first conductive part 17 and the second conductive part 18 are The second conductive portion 18 can be easily used as a terminal when applying a voltage between the first electrode 13 and the second electrode 14.
- the first conductive part 17 and the second conductive part 18 have ends formed along the thickness direction of the electrochromic sheet 150 in a plan view of the electrochromic sheet 150. , configured to be exposed at different positions. Exposure of the first conductive part 17 and the second conductive part 18 at the ends is realized as follows. That is, in the step [2], the element sealing connection sheet 110 is punched in the thickness direction corresponding to each electrochromic element 60, so that the element sealing connection sheet 110 is cut into individual pieces so as to have a circular shape in a plan view. When obtaining the electrochromic sheet 150, this punching can be realized by performing the punching so as to pass through the first conductive part 17 and the second conductive part 18 in a plan view.
- the first hole part 53 and the second hole part 54 are formed on their walls (inner peripheral surfaces). Although a portion of the hole may be missing, in this specification, such a defect is also referred to as a hole.
- both the first hole portion 53 and the second hole portion 54 are through holes that penetrate the sealing portion 55 in the thickness direction, but the present invention is not limited to this.
- the first hole portion 53 may be formed from the first substrate 11 side toward the second substrate 12 side, and the sealing portion 55 may remain at the bottom thereof, or the second hole portion 54 may be formed so that the sealing portion 55 remains at the bottom thereof.
- the second hole portion 54 may be formed so that the sealing portion 55 remains at the bottom thereof.
- the third conductive part 51 overlaps the first electrode 13 extending from the colored area 70 as a wiring in a plan view, and is located at a position closer to the colored area 70 (inner side) than the first hole part 53; That is, it is provided so as to fill the third hole portion 57, which is a through hole provided through the sealing portion 55, at a position between the first conductive portion 17 and the electrochromic element 60 in a plan view. (See Figure 4).
- the third conductive portion 51 is electrically connected to the first electrode 13 via the first auxiliary electrode 15 .
- This third conductive part 51 is provided in the rim part 21 in order to attach the lens 30 obtained using the electrochromic sheet 150 (curved sheet 120) inside the rim part 21, as shown in FIGS. 5 and 6. 21 (lens shape), when trimming was performed to cut the edges, the bridge part 22 side (right side in FIGS. 5 and 6) It will be exposed at the position.
- the fourth conductive part 52 overlaps the second electrode 14 extending from the colored area 70 as a wiring in a plan view, and is located on the colored area 70 side (inner side) of the second hole part 54.
- the fourth hole portion 58 which is a through hole provided through the sealing portion 55, is provided at a position between the second conductive portion 18 and the electrochromic element 60 in a plan view. (See Figure 4).
- the fourth conductive portion 52 is electrically connected to the second electrode 14 via the second auxiliary electrode 16.
- This fourth conductive part 52 is provided in the rim part 21 in order to attach the lens 30 obtained using the electrochromic sheet 150 (curved sheet 120) inside the rim part 21, as shown in FIGS. 5 and 6.
- trimming was performed to cut the edges in order to obtain a cutout corresponding to the shape of 21, at the position on the temple part 23 side (the left side in Figs. 5 and 6). It will be exposed.
- the thickness direction of the electrochromic sheet 150 (curved sheet 120)
- the third conductive part 51 and the fourth conductive part 52 are exposed at different positions such as the bridge part 22 side and the temple part 23 side, and the third conductive part 51 and the fourth conductive part 52 are The four conductive parts 52 are electrically connected to the first electrode 13 and the second electrode 14, respectively.
- the third conductive portion 51 and the fourth conductive portion 52 are connected to the switch 25 of the temple portion 23, respectively. and a connection terminal that is electrically connected to the battery 26 via wiring.
- the constituent materials of the third conductive part 51 and the fourth conductive part 52 may be any conductive material, for example, the same materials as those mentioned as the constituent materials of the first conductive part 17 and the second conductive part 18. material can be used.
- the average thickness of the third conductive portion 51 and the fourth conductive portion 52 is preferably set to be approximately 20 ⁇ m or more and 100 ⁇ m or less, and more preferably approximately 40 ⁇ m or more and 80 ⁇ m or less, respectively.
- the average thickness of the third conductive part 51 and the fourth conductive part 52 exposed at the end along the thickness direction of the electrochromic sheet 150 (curved sheet 120) is defined as such a range.
- both the third hole portion 57 and the fourth hole portion 58 are through holes that penetrate the sealing portion 55 in the thickness direction, but the present invention is not limited to this.
- the third hole portion 57 may be formed from the first substrate 11 side toward the second substrate 12 side, and the sealing portion 55 may remain at the bottom thereof, or the fourth hole portion 58 may be formed from the second substrate 12 side toward the first substrate 11 side, and may be configured such that the sealing portion 55 remains on the top thereof.
- first hole 53 and the third hole 57 and the second hole 54 and the fourth hole 58 are connected to the sealing part 55 as different holes, that is, as separate bodies.
- first hole portion 53 and the third hole portion 57 may be formed as one hole portion that is integrally formed without the intervening sealing portion 55.
- second hole portion 54 and the fourth hole portion 58 may be configured as one hole portion that is integrally formed without the intervening sealing portion 55.
- the first auxiliary electrode 15 is provided as a wiring layer on the first electrode 13 extending from the colored region 70 on the surface opposite to the first substrate 11, and is provided in the first hole 53. It is electrically connected to the first conductive part 17 formed in the third conductive part 17 and the third conductive part 51 formed in the third hole part 57 . That is, the first auxiliary electrode 15 is formed between the first electrode 13 and the first conductive part 17 and third conductive part 51 to electrically connect them to each other.
- the second auxiliary electrode 16 is provided as a wiring layer on the second electrode 14 extending from the colored region 70 on the surface opposite to the second substrate 12, and is provided in a second hole.
- the second conductive portion 18 formed in the portion 54 and the fourth conductive portion 52 formed in the fourth hole portion 58 are electrically connected. That is, a second auxiliary electrode 16 is formed between the second electrode 14 and the second conductive part 18 and fourth conductive part 52 to electrically connect them to each other.
- the resistance values of the first auxiliary electrode 15 and the second auxiliary electrode 16 are set lower than the resistance values of the first electrode 13 and the second electrode 14, respectively. Therefore, the wiring electrically connected to the electrochromic element 60 is formed by the laminate of the first electrode 13 and the first auxiliary electrode 15 and the laminate of the second electrode 14 and the second auxiliary electrode 16, respectively. By configuring this structure, better electrical conductivity can be imparted to these wirings (laminates).
- the constituent materials of the first auxiliary electrode 15 and the second auxiliary electrode 16 are not particularly limited as long as the resistance value is lower than that of the first electrode 13 and the second electrode 14, respectively, but the constituent material has excellent conductivity.
- the constituent material has excellent conductivity.
- silver, aluminum, copper, chromium, molybdenum, etc. are used, and one type or a combination of two or more of these can be used.
- the average thickness of the first auxiliary electrode 15 and the second auxiliary electrode 16 is preferably set to be approximately 1 nm or more and 100 nm or less, and more preferably approximately 5 nm or more and 50 nm or less, respectively. Thereby, the function as an auxiliary electrode can be reliably provided to the first auxiliary electrode 15 and the second auxiliary electrode 16.
- the total thickness of the electrochromic sheet 150 having the above structure is not particularly limited, but is preferably 0.3 mm or more and 10.0 mm or less, and more preferably 0.5 mm or more and 5.0 mm or less. preferable. This provides the electrochromic sheet 150 with excellent strength and also provides the electrochromic sheet 150 with excellent thermoformability when forming the electrochromic sheet 150 into the curved sheet 120 having a curved shape. I can do it.
- each layer constituting the electrochromic element 60 included in the electrochromic sheet 150 can be replaced with a layer of any configuration that can exhibit a similar function.
- the electrochromic sheet 150 may further include another layer such as an intermediate layer between the substrates 11 and 12 and the electrochromic element 60.
- the first conductive part and the second conductive part electrically connected to the first electrode and the second electrode of the electrochromic element each have an electrochromic element. They are exposed at different positions along the edge of the sheet in the thickness direction. Therefore, during the manufacturing of eyeglass lenses, a voltage is applied between the first electrode and the second electrode via the first conductive part and the second conductive part to prepare the inside of the electrochromic sheet. , it is possible to easily know whether or not a defect has occurred in the electrochromic element. That is, the electrochromic element can be easily inspected during the manufacture of spectacle lenses. Therefore, the present invention has industrial applicability.
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Abstract
Description
(1) 第1基板と、
前記第1基板と対向して配置された第2基板と、
前記第1基板と前記第2基板との間に配置され、電圧の印加により着色を呈する着色領域を区画する封止部と、
前記着色領域内に配置されたエレクトロクロミック素子と、
前記封止部の前記エレクトロクロミック素子に対する外側に、前記第1基板側から前記第2基板側に向かって形成された第1穴部を埋めるように設けられた第1導電部と、前記第2基板側から前記第1基板側に向かって形成された第2穴部を埋めるように設けられた第2導電部と、を有するエレクトロクロミックシートであって、
前記エレクトロクロミック素子は、前記第1基板に、前記第2基板側に向かって、順次積層された、第1電極および第1エレクトロクロミック層と、
前記第2基板に、前記第1基板側に向かって、順次積層された、第2電極および第2エレクトロクロミック層と、
前記第1エレクトロクロミック層と前記第2エレクトロクロミック層との間に充填された電解質層とを備え、
前記第1エレクトロクロミック層は、酸化反応によって着色を呈する材料を主材料として含有し、
前記第2エレクトロクロミック層は、還元反応によって着色を呈する材料を主材料として含有しており、
前記第1電極は、前記第1基板と、前記封止部および前記第1導電部との間において、当該エレクトロクロミックシートの平面視で、前記着色領域から延伸して、前記第1導電部まで到達して、前記第1導電部に電気的に接続するようにパターニングして設けられ、
前記第2電極は、前記第2基板と、前記封止部および前記第2導電部との間において、当該エレクトロクロミックシートの平面視で、前記着色領域から延伸して、前記第2導電部まで到達して、前記第2導電部に電気的に接続するようにパターニングして設けられており、
前記第1導電部および前記第2導電部は、それぞれ、当該エレクトロクロミックシートの厚さ方向に沿った端部において、異なる位置で露出していることを特徴とするエレクトロクロミックシート。
前記第1電極は、さらに前記第3導電部に電気的に接続されている上記(1)に記載のエレクトロクロミックシート。
前記第2電極は、さらに前記第4導電部に電気的に接続されている上記(1)ないし(4)のいずれかに記載のエレクトロクロミックシート。
(11) 上記(10)に記載の眼鏡用レンズを備えることを特徴とする眼鏡。
図1は、本発明のエレクトロクロミックシートを湾曲形状とした湾曲シートを有するレンズを備えるサングラスの実施形態を示す斜視図である。なお、図1において、サングラスを使用者の頭部に装着した際に、レンズの使用者の目側の面を裏側の面と言い、その反対側の面を表側の面と言う。
図2は、本発明のエレクトロクロミックシートを湾曲形状とした湾曲シートを有するレンズの製造方法を説明するための模式図である。図3は、本発明のエレクトロクロミックシートの実施形態を示す平面図である。図4は、図3に示すエレクトロクロミックシートの主要部分におけるA-A線縦断面図である。図5は、湾曲シートを有するレンズを示す平面図である。図6は、図5に示すレンズの主要部分におけるB-B線縦断面図である。図7は、図3に示すエレクトロクロミックシートおよび図5に示すレンズが備えるエレクトロクロミック素子を示す縦断面図である。なお、以下では、説明の都合上、図2、図4、図6、図7の上側および図3、図5の紙面手前側を「上」、図2、図4、図6、図7の下側および図3、図5の紙面奥側を「下」と言う。また、図6において、湾曲シート120は、実際には湾曲状をなしているが、説明の便宜上、平板状をなす構成として記載している。
この際の素子積層体250(エレクトロクロミックシート150)の加熱温度(成形温度)は、後述の通り、本実施形態では、エレクトロクロミックシート150が基板11、12を備え、基板11、12の溶融または軟化温度を考慮して、好ましくは110℃以上170℃以下程度、より好ましくは130℃以上160℃以下程度に設定される。加熱温度をかかる範囲内に設定することにより、エレクトロクロミックシート150の変質・劣化を防止しつつ、エレクトロクロミックシート150を軟化または溶融状態として、エレクトロクロミックシート150を確実に熱曲げして、湾曲形状をなす湾曲シート120とすることができる。
エレクトロクロミックシート150は、本実施形態では、図3、図4に示すように、第1基板11と、第2基板12と、封止部55と、エレクトロクロミック素子60と、第1導電部17と、第2導電部18と、第3導電部51と、第4導電部52と、第1補助電極15と、第2補助電極16と、を備えている。
第1基板11は、エレクトロクロミック素子60を含む他の部材を支持するとともに、第1基板11と、第2基板12との間に、エレクトロクロミック素子60を含む他の部材を配置させる、エレクトロクロミックシート150の最外層を構成し、エレクトロクロミック素子60等を保護する保護層としての機能を有している。
12 第2基板
13 第1電極
14 第2電極
15 第1補助電極
16 第2補助電極
17 第1導電部
18 第2導電部
20 フレーム
21 リム部
22 ブリッジ部
23 テンプル部
24 ノーズパッド部
25 スイッチ
26 電池
30 レンズ
35 樹脂層
40 金型
50 保護フィルム
51 第3導電部
52 第4導電部
53 第1穴部
54 第2穴部
55 封止部
57 第3穴部
58 第4穴部
60 エレクトロクロミック素子
63 第1エレクトロクロミック層
64 第2エレクトロクロミック層
65 電解質層
70 着色領域
100 サングラス
110 素子封止連結シート
120 湾曲シート
150 エレクトロクロミックシート
210 連結シート積層体
220 湾曲素子積層体
250 素子積層体
Claims (11)
- 第1基板と、
前記第1基板と対向して配置された第2基板と、
前記第1基板と前記第2基板との間に配置され、電圧の印加により着色を呈する着色領域を区画する封止部と、
前記着色領域内に配置されたエレクトロクロミック素子と、
前記封止部の前記エレクトロクロミック素子に対する外側に、前記第1基板側から前記第2基板側に向かって形成された第1穴部を埋めるように設けられた第1導電部と、前記第2基板側から前記第1基板側に向かって形成された第2穴部を埋めるように設けられた第2導電部と、を有するエレクトロクロミックシートであって、
前記エレクトロクロミック素子は、前記第1基板に、前記第2基板側に向かって、順次積層された、第1電極および第1エレクトロクロミック層と、
前記第2基板に、前記第1基板側に向かって、順次積層された、第2電極および第2エレクトロクロミック層と、
前記第1エレクトロクロミック層と前記第2エレクトロクロミック層との間に充填された電解質層とを備え、
前記第1エレクトロクロミック層は、酸化反応によって着色を呈する材料を主材料として含有し、
前記第2エレクトロクロミック層は、還元反応によって着色を呈する材料を主材料として含有しており、
前記第1電極は、前記第1基板と、前記封止部および前記第1導電部との間において、当該エレクトロクロミックシートの平面視で、前記着色領域から延伸して、前記第1導電部まで到達して、前記第1導電部に電気的に接続するようにパターニングして設けられ、
前記第2電極は、前記第2基板と、前記封止部および前記第2導電部との間において、当該エレクトロクロミックシートの平面視で、前記着色領域から延伸して、前記第2導電部まで到達して、前記第2導電部に電気的に接続するようにパターニングして設けられており、
前記第1導電部および前記第2導電部は、それぞれ、当該エレクトロクロミックシートの厚さ方向に沿った端部において、異なる位置で露出していることを特徴とするエレクトロクロミックシート。 - 当該エレクトロクロミックシートの平面視で、前記第1導電部と前記エレクトロクロミック素子との間において、前記第1基板側から前記第2基板側に向かって形成された第3穴部を埋めるように設けられた第3導電部を備え、
前記第1電極は、さらに前記第3導電部に電気的に接続されている請求項1に記載のエレクトロクロミックシート。 - 前記第1電極と、前記第1導電部および前記第3導電部との間には、これらを互いに電気的に接続する第1補助電極を備える請求項2に記載のエレクトロクロミックシート。
- 前記第1穴部および前記第3穴部は、前記封止部を厚さ方向に貫通する貫通孔である請求項2または3に記載のエレクトロクロミックシート。
- 当該エレクトロクロミックシートの平面視で、前記第2導電部と前記エレクトロクロミック素子との間において、前記第2基板側から前記第1基板側に向かって形成された第4穴部を埋めるように設けられた第4導電部を備え、
前記第2電極は、さらに前記第4導電部に電気的に接続されている請求項1ないし4のいずれか1項に記載のエレクトロクロミックシート。 - 前記第2電極と、前記第2導電部および前記第4導電部との間には、これらを互いに電気的に接続する第2補助電極を備える請求項5に記載のエレクトロクロミックシート。
- 前記第2穴部および前記第4穴部は、前記封止部を厚さ方向に貫通する貫通孔である請求項5または6に記載のエレクトロクロミックシート。
- 前記第1導電部および前記第2導電部は、それぞれ独立して、その平均厚さが20μm以上100μm以下である請求項1ないし7のいずれか1項に記載のエレクトロクロミックシート。
- 前記第1電極および前記第2電極は、それぞれ独立して、その平均厚さが50nm以上200nm以下である請求項1ないし8のいずれか1項に記載のエレクトロクロミックシート。
- 湾曲形状とされた請求項1ないし9のいずれか1項に記載のエレクトロクロミックシートを、レンズ形状に対応して切り取られた切取物として備えることを特徴とする眼鏡用レンズ。
- 請求項10に記載の眼鏡用レンズを備えることを特徴とする眼鏡。
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| EP23780827.4A EP4502721A4 (en) | 2022-03-31 | 2023-03-30 | ELECTROCHROMIC SHEET, LENS FOR EYEGLASSES AND SPECTACLES |
| US18/847,499 US20250208475A1 (en) | 2022-03-31 | 2023-03-30 | Electrochromic sheet, lens for eyeglasses, and eyeglasses |
| CN202380032176.2A CN118984969A (zh) | 2022-03-31 | 2023-03-30 | 电致变色片、眼镜用镜片及眼镜 |
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| CN108474990B (zh) * | 2016-03-07 | 2021-05-07 | 力海科技股份有限公司 | 电致变色装置 |
| JP2018132635A (ja) * | 2017-02-15 | 2018-08-23 | 株式会社リコー | エレクトロクロミック装置及びエレクトロクロミック装置の製造方法 |
| EP3712694B1 (en) * | 2019-03-19 | 2025-08-06 | Ricoh Company, Ltd. | Electronic device, method for producing electronic device, and photochromatic lens unit |
| JP7565003B2 (ja) * | 2019-03-19 | 2024-10-10 | 株式会社リコー | エレクトロクロミック装置の製造方法、および、エレクトロクロミック素子 |
| EP3712695B1 (en) * | 2019-03-20 | 2022-02-23 | Ricoh Company, Ltd. | Electrochromic device, wearable device, and method for driving electrochromic device |
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- 2023-03-30 US US18/847,499 patent/US20250208475A1/en active Pending
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| JP2023151574A (ja) | 2023-10-16 |
| EP4502721A1 (en) | 2025-02-05 |
| JP7239041B1 (ja) | 2023-03-14 |
| US20250208475A1 (en) | 2025-06-26 |
| CN118984969A (zh) | 2024-11-19 |
| EP4502721A4 (en) | 2025-07-02 |
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