JP2018010084A - Device and method for adjusting light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light adjustment device capable of reducing difference in intensity of light transmitting through two elements.SOLUTION: A light adjustment device comprises; a first element 11 designed such that intensity of light transmitting therethrough changes in accordance with a first applied voltage; a second element 12 designed such that intensity of light transmitting therethrough changes in accordance with a second applied voltage; two sets of light intensity measurement means 21, 22 configured to measure intensity levels of light transmitting through the first element 11 and light transmitting through the second element 12, respectively; and control means configured to provide control to adjust at least either of the first voltage and the second voltage to reduce light intensity difference when the light intensity difference measured by the light intensity measurement means 21, 22 is out of a predetermined range.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a light control device and a light control method.

  Unlike light control elements that use the photochromic phenomenon in which the color density changes by irradiation with light such as ultraviolet rays, the electrochromic element that controls the color density based on electrical signals has the advantage that the user can freely control the color density. Have.

  One of the applied technologies of the electric light control device is light control glasses. Since the color density can be controlled by the applied voltage, it has been developed as a lens for glasses or sunglasses because it has a merit that the user can freely control the amount of light transmitted through the electrochromic device.

For example, a dimming spectacle having an electrochromic element mounted in a frame and provided with a power source for applying a potential to the electrochromic element and a switch for switching the polarity of the potential applied to the electrochromic element. Has been proposed (see, for example, Patent Document 1)
Further, the light control glasses using the liquid crystal display element, the light control glasses for controlling the light transmittance in the liquid crystal display element when a change in the amount of external light is detected for a certain time or more. It has been proposed (see, for example, Patent Document 2).

  An object of this invention is to provide the light modulation apparatus which can reduce the difference of the transmitted light quantity in two elements.

  The light control device of the present invention as a means for solving the above-described problems is a first element in which the amount of transmitted light changes according to the applied first voltage, and the applied second voltage. A difference between the second element in which the amount of transmitted light changes, the light amount measuring means for measuring the amount of light transmitted through the first element and the second element, respectively, Control means for adjusting at least one of the first voltage and the second voltage to reduce the difference in the amount of light when outside the range.

  ADVANTAGE OF THE INVENTION According to this invention, the light modulation apparatus which can reduce the difference of the transmitted light quantity in two elements can be provided.

FIG. 1 is a schematic diagram illustrating an example of a light control device according to the present invention. FIG. 2A is a schematic diagram illustrating an example of a configuration of an electrochromic element used in the light control device of the present invention. FIG. 2B is a schematic diagram illustrating another example of the configuration of the electrochromic element used in the light control device of the present invention. FIG. 2C is a schematic diagram illustrating another example of the configuration of the electrochromic element used in the light control device of the present invention. FIG. 2D is a schematic diagram illustrating another example of the configuration of the electrochromic element used in the light control device of the present invention. FIG. 2E is a schematic diagram illustrating another example of the configuration of the electrochromic element used in the light control device of the present invention. FIG. 3 is a block diagram showing an example of the light control device of the present invention. FIG. 4 is a flowchart showing an example of the flow of adjusting the voltage applied to the element in order to reduce the difference in the amount of transmitted light using the light control device of the present invention. FIG. 5A is a graph showing an example of the relationship between the voltage value in the element used in the light control device of the present invention and the output voltage of the light amount measuring means. FIG. 5B is a graph showing another example of the relationship between the voltage value in the element used in the light control device of the present invention and the output voltage of the light amount measuring means. FIG. 6A is a graph showing an example of the relationship between the voltage application time and the output voltage of the light amount measuring means in the element used in the light control device of the present invention. FIG. 6B is a graph showing another example of the relationship between the voltage application time and the output voltage of the light amount measuring means in the element used in the light control device of the present invention.

(Dimming device and dimming method)
The light control device of the present invention includes a first element that changes a light amount transmitted according to a first voltage applied, and a second element that changes a light amount transmitted according to a second voltage applied. And a light quantity measuring means for measuring the light quantity transmitted through the first element and the second element, respectively, and a difference between the light quantities measured by the light quantity measuring means is outside a predetermined range, Control means for adjusting at least one of the voltage and the second voltage to reduce the difference in the amount of light, and further having other means as necessary.

  The dimming method of the present invention includes a first element in which the amount of transmitted light changes in accordance with an applied first voltage, and a second element in which the amount of transmitted light changes in accordance with an applied second voltage. A light amount measurement step for measuring the amount of light transmitted through the light source, and adjusting the difference between the measured light amounts to be outside a predetermined range, adjusting at least one of the first voltage and the second voltage. And a control step of controlling so as to reduce the difference in the amount of light, and further include other steps as necessary.

The light control method of the present invention can be suitably performed by the light control device of the present invention.
Hereinafter, the details of the light control method of the present invention will be clarified through the description of the light control device of the present invention.

  In the light control device of the present invention, the light control devices of Patent Documents 1 and 2 have individual differences in elements such as liquid crystal display elements and electrochromic elements. This is based on the knowledge that the color density may be different even when driven by the application time.

  Examples of the use of the light control device of the present invention include light control glasses that can adjust the color density according to the voltage applied to the element by using the element as a lens.

<First element and second element>
The first element is an element in which the amount of transmitted light changes according to the applied first voltage. The second element is an element in which the amount of transmitted light changes according to the applied second voltage.
The light quantity is a time product of light flux received by the light quantity measuring means. The amount of light transmitted through the element (hereinafter sometimes referred to as “transmitted light amount”) is attenuated according to the color density of the transmitted first element and second element, and is output by the light amount measuring means. Measured by converting to voltage.
There is no restriction | limiting in particular as light which permeate | transmits said 1st element and said 2nd element, According to the objective, it can select suitably, For example, an ultraviolet-ray, visible light, etc. are mentioned.

There is no restriction | limiting in particular as said 1st element and said 2nd element, According to the objective, it can select suitably, For example, color development density changes according to the applied voltage, for example, light, such as visible light. For example, an element in which the amount of light transmitted through the light source changes can be used. Among these, an electrochromic element (hereinafter sometimes referred to as “EC element”) is preferable.
Hereinafter, although the case where the element is the electrochromic element will be described, the present invention is not limited thereto.

  The electrochromic element as the element includes a first substrate, a first electrode layer, an electrochromic layer, an insulating inorganic particle layer, a second electrode layer, and a second substrate. In order, it is preferable to have an electrolyte between the first electrode layer and the second electrode layer.

<< first substrate and second substrate >>
The first substrate and the second substrate (hereinafter may be simply referred to as “substrate” if one of them is not specified) is not particularly limited, and can be appropriately thermoformed according to the purpose. Resin materials such as polycarbonate resin, acrylic resin, polyethylene resin, polyvinyl chloride resin, polyester resin, epoxy resin, melamine resin, phenol resin, polyurethane resin, polyimide resin, etc. Can be mentioned.
Further, the surface of the substrate may be coated with a transparent insulating inorganic particle layer, an antireflection layer or the like in order to improve water vapor barrier property, gas barrier property, and visibility.

  There is no restriction | limiting in particular as a shape of the said board | substrate, According to the objective, it can select suitably, For example, elliptical shape, a rectangular shape, etc. are mentioned. Further, when the light control device is used as the light control glasses, the first substrate may be a lens, and the outer shape of the first substrate may be a shape corresponding to the rim of the frame.

<< first electrode layer and second electrode layer >>
As a material of the first electrode layer and the second electrode layer (hereinafter, simply referred to as “electrode layer” when one of them is not specified), any material that is transparent and conductive can be used. There is no particular limitation and can be appropriately selected depending on the purpose. For example, tin-doped indium oxide (hereinafter sometimes referred to as “ITO”), fluorine-doped tin oxide (hereinafter referred to as “FTO”) And tin oxide doped with antimony (hereinafter also referred to as “ATO”). Among these, indium oxide (hereinafter referred to as “In oxide”) formed by vacuum film formation because it is a material that can be easily formed by sputtering and can obtain good transparency and electrical conductivity. At least one of tin oxide (hereinafter also referred to as “Sn oxide”) and zinc oxide (hereinafter also referred to as “Zn oxide”). It is preferable to include. Among these, InSnO, GaZnO, SnO, In ₂ O ₃ and ZnO are particularly preferable. Furthermore, transparent network electrodes such as silver, gold, carbon nanotube, and metal oxide, and composite layers thereof are also useful.

  The average thickness of the electrode layer is not particularly limited and can be appropriately selected depending on the purpose, but is preferably adjusted so as to obtain an electric resistance value necessary for an electrochromic oxidation-reduction reaction, When ITO is used, 50 nm or more and 500 nm or less are preferable.

<< Electrochromic layer >>
The electrochromic layer is not particularly limited as long as it contains an electrochromic compound, and can be appropriately selected according to the purpose.
The electrochromic material is not particularly limited and may be appropriately selected depending on the purpose. Examples thereof include inorganic electrochromic compounds, organic electrochromic compounds, and conductive polymers known to exhibit electrochromism. It is done.

Examples of the inorganic electrochromic compound include tungsten oxide, molybdenum oxide, iridium oxide, and titanium oxide.
Examples of the organic electrochromic compound include viologen, rare earth phthalocyanine, and styryl.
Examples of the conductive polymer include polypyrrole, polythiophene, polyaniline, or derivatives thereof.

As the electrochromic layer, it is preferable to use a structure in which an organic electrochromic compound is supported on conductive or semiconductive fine particles.
Specifically, it is a structure in which fine particles having a particle size of about 5 nm to 50 nm are sintered on the electrode surface, and an organic electrochromic compound having a polar group such as phosphonic acid, carboxyl group, silanol group or the like is adsorbed on the surface of the fine particles. .
The structure utilizes a large surface effect of fine particles and efficiently injects electrons into the organic electrochromic compound. Therefore, the structure responds faster than a conventional electrochromic display element.
Furthermore, since a transparent film can be formed as a display layer by using fine particles, a high color density of the electrochromic dye can be obtained.
A plurality of types of organic electrochromic compounds can be supported on conductive or semiconductive fine particles.

Specific examples of the electrochromic material include polymer-based and dye-based electrochromic compounds such as azobenzene, anthraquinone, diarylethene, dihydroprene, dipyridine, styryl, styrylspiropyran, spirooxazine, Spirothiopyran, thioindigo, tetrathiafulvalene, terephthalic acid, triphenylmethane, triphenylamine, naphthopyran, viologen, pyrazoline, phenazine, phenylenediamine, phenoxazine, phenothiazine, phthalocyanine And low molecular organic electrochromic compounds such as fluoran, fulgide, benzopyran, and metallocene, and conductive polymer compounds such as polyaniline and polythiophene.
Among these, a viologen compound or a dipyridine compound is preferable from the viewpoint of a low color developing / erasing potential and a good color value.

Examples of the viologen compound include compounds described in Japanese Patent No. 39555641 and Japanese Patent Application Laid-Open No. 2007-171781.
Examples of the dipyridine-based compound include compounds described in JP 2007-171781 A and JP 2008-116718 A.
Among these, a dipyridine compound represented by the following general formula 1 is preferable from the viewpoint of exhibiting a good color value.

Examples of the viologen compound include compounds described in Japanese Patent No. 39555641 and Japanese Patent Application Laid-Open No. 2007-171781.
Examples of the dipyridine-based compound include compounds described in JP 2007-171781 A and JP 2008-116718 A.
Among these, a dipyridine compound represented by the following general formula 1 is preferable from the viewpoint of exhibiting a good color value.

[General Formula 1]
However, in the said General formula 1, R1 and R2 respectively independently represent the C1-C8 alkyl group which may have a substituent, or an aryl group, and at least one of R1 and R2 is COOH, It has a substituent selected from PO (OH) ₂ and Si (OC _k H _{2k + 1} ) ₃ (where k is 1 to 20). X represents a monovalent anion. For example, X is not particularly limited as long as it is stably paired with a cation moiety, but Br ion (Br ⁻ ), Cl ion (Cl ⁻ ), ClO ₄ ion ( ClO ₄ ⁻ ), PF ₆ ion (PF ₆ ⁻ ), BF ₄ ion (BF ₄ ⁻ ) and the like. n, m, and l represent 0, 1, or 2. A, B, and C each independently represent a C 1-20 alkyl group, aryl group, or heterocyclic group that may have a substituent.

Examples of the metal complex-based and metal oxide-based electrochromic compounds include inorganic electrochromic compounds such as titanium oxide, vanadium oxide, tungsten oxide, indium oxide, iridium oxide, nickel oxide, and Prussian blue.
There is no restriction | limiting in particular as electroconductive or semiconductive fine particle, Although it can select suitably according to the objective, A metal oxide is preferable.
Examples of the metal oxide material include titanium oxide, zinc oxide, tin oxide, zirconium oxide, cerium oxide, yttrium oxide, boron oxide, magnesium oxide, strontium titanate, potassium titanate, barium titanate, and calcium titanate. , Calcium oxide, ferrite, hafnium oxide, tungsten oxide, iron oxide, copper oxide, nickel oxide, cobalt oxide, barium oxide, strontium oxide, vanadium oxide, aluminosilicate, calcium phosphate, aluminosilicate, etc. Is mentioned. These may be used individually by 1 type and may use 2 or more types together.
In view of electrical properties such as electrical conductivity and physical properties such as optical properties, one selected from titanium oxide, zinc oxide, tin oxide, zirconium oxide, iron oxide, magnesium oxide, indium oxide, tungsten oxide, or When these mixtures are used, it is possible to display colors with excellent response speed of color development and decoloration.
In particular, when titanium oxide is used, it is possible to display a color with an excellent response speed of color development and decoloration.
In addition, the shape of the conductive or semiconductive fine particles is not particularly limited, but a shape having a large surface area per unit volume (hereinafter referred to as a specific surface area) is used in order to efficiently carry the electrochromic compound. .
For example, when the fine particle is an aggregate of nanoparticles, it has a large specific surface area, so that the electrochromic compound is more efficiently supported and the display contrast ratio of color development and decoloration is excellent.

There is no restriction | limiting in particular in the average thickness of the said electrochromic layer, Although it can select suitably according to the objective, 0.2 to 5.0 micrometer is preferable. If the average thickness of the electrochromic layer is less than 0.2 μm, it may be difficult to obtain the color density, and if it exceeds 5.0 μm, the manufacturing cost increases and the visibility is likely to deteriorate due to color development. is there.
The electrochromic layer and the conductive or semiconducting fine particle layer can be formed by vacuum film formation, but are preferably applied and formed as a particle-dispersed paste from the viewpoint of productivity.

<< Insulating inorganic particle layer >>
The insulating inorganic particle layer is a layer for isolating the first electrode layer and the second electrode layer so as to be electrically insulated.
The material of the insulating inorganic particle layer is not particularly limited, but an organic material, an inorganic material, or a composite thereof having high insulating properties, high durability, and excellent film formability is preferable.
As a method for forming the insulating inorganic particle layer, for example, a sintering method (utilizing pores formed between particles by adding polymer fine particles or inorganic particles to a binder or the like and partially fusing them), extraction method, etc. (After forming a constituent layer with a solvent-soluble organic substance or inorganic substance and a binder that does not dissolve in the solvent, the organic substance or inorganic substance is dissolved in the solvent to obtain pores), heating or degassing the polymer Well-known formation such as foaming method for foaming, phase change method for phase separation of polymer mixture by manipulating good solvent and poor solvent, radiation irradiation method for radiating various radiations to form pores The method can be used.
Specifically, a resin mixed particle film composed of metal oxide fine particles (for example, SiO ₂ particles, Al ₂ O ₃ particles) and a resin binder, a porous organic film (for example, polyurethane resin, polyethylene resin, etc.), Examples thereof include an inorganic insulating material film formed on a porous film.

<< Electrolyte >>
The electrolyte is a solid electrolyte and is filled between the first electrode layer and the second electrode layer.
There is no restriction | limiting in particular as said electrolyte, Although it can select suitably according to the objective, It is preferable that the inorganic particle which controls the average thickness of the said electrolyte is included.
Moreover, after forming the said insulating inorganic particle layer previously, after coating | coating as the solution which mixed the said cured resin so that it may osmose | permeate the said insulating inorganic particle layer, it is preferable to harden | cure with light or a heat | fever. The electrolyte may be a film cured by light or heat after being coated on the electrochromic layer as a mixed solution of the inorganic particles and the curable resin.
Furthermore, when the electrochromic layer is a layer in which an electrochromic compound is supported on conductive or semiconducting nanoparticles, as a solution in which the cured resin and the electrolyte are mixed so as to penetrate into the electrochromic layer After coating, a film cured with light or heat may be used.

  Examples of the electrolytic solution include a liquid electrolyte such as an ionic liquid, or a solution obtained by dissolving a solid electrolyte in a solvent.

Examples of the electrolyte material include inorganic ion salts such as alkali metal salts and alkaline earth metal salts, quaternary ammonium salts, acids, and alkali support salts. Specifically, 1-ethyl- 3-methylimidazolium um _{salt, LiClO 4, LiBF 4, LiAsF} 6, LiPF 6, LiCF 3 SO 3, LiCF 3 COO, KCl, NaClO 3, NaCl, NaBF 4, NaSCN, KBF 4, Mg (ClO 4) 2, such as mg _{(BF 4) 2} and the like. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the solvent include propylene carbonate, acetonitrile, γ-butyrolactone, ethylene carbonate, sulfolane, dioxolane, tetrahydrofuran, 2-methyltetrahydrofuran, dimethyl sulfoxide, 1,2-dimethoxyethane, 1,2-ethoxymethoxyethane, and polyethylene glycol. And alcohols. These may be used individually by 1 type and may use 2 or more types together.

Examples of the curable resin include photocured resins such as acrylic resins, urethane resins, epoxy resins, vinyl chloride resins, ethylene resins, melamine resins, and phenol resins; thermosetting resins. Among these, materials having high compatibility with the electrolyte are preferable, and derivatives of ethylene glycol such as polyethylene glycol and polypropylene glycol are more preferable.
Further, as the curable resin, a photocurable resin is preferable because a device can be manufactured at a low temperature and in a short time as compared with a method of thinning by thermal polymerization or evaporation of a solvent.
Among the electrolytes in which these are combined, a solid solution of a matrix polymer containing an oxyethylene chain or an oxypropylene chain and an ionic liquid is particularly preferable because both hardness and high ionic conductivity are easily compatible. A particularly preferred combination is an electrolyte layer composed of a solid solution of a matrix polymer containing oxyethylene chains or oxypropylene chains and an ionic liquid. By using this configuration, it is easy to achieve both hardness and high ionic conductivity.

The inorganic particle is not particularly limited as long as it is a material that can form a porous layer and hold the electrolyte and the cured resin, but it is insulated from the viewpoint of the stability and visibility of the electrochromic reaction. A material having high properties, transparency and durability is preferable. Specific examples of the material include oxides or sulfides such as silicon, aluminum, titanium, zinc, and tin, or mixtures thereof.
The number average particle size of the primary particles of the inorganic particles is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 10 nm or more and 10 μm or less, and more preferably 10 nm or more and 100 nm or less.

<< Other layers >>
There is no restriction | limiting in particular as said other layer, According to the objective, it can select suitably, For example, a protective layer etc. are mentioned.

The protective layer is formed to physically and chemically protect the side surface of the electrochromic device.
The protective layer can be formed, for example, by applying an ultraviolet curable or thermosetting insulating resin or the like so as to cover at least one of the side surface and the upper surface, and then curing. Moreover, it is more preferable to use a laminated protective layer of a cured resin and an inorganic material. By using a laminated structure with an inorganic material, barrier properties against oxygen and water are improved.

As the inorganic material, a material having high insulation, transparency, and durability is preferable, and examples thereof include oxides or sulfides such as silicon, aluminum, titanium, zinc, and tin, or a mixture thereof. These films can be easily formed by a vacuum film forming process such as sputtering or vapor deposition.
There is no restriction | limiting in particular as average thickness of the said protective layer, Although it can select suitably according to the objective, 0.5 to 10 micrometers is preferable.

<Light quantity measuring means and light quantity measuring process>
The light amount measuring means is a means for measuring the amount of light transmitted through the first element and the second element.
The light quantity measurement step develops a first element that changes the amount of light transmitted according to the first voltage applied and a second element that changes the amount of light transmitted according to the second voltage applied. This is a step of measuring the amount of light transmitted through the first element and the second element, respectively, and can be suitably performed by the light amount measuring means.

The light quantity measuring means is electrically connected to the control means and outputs an output voltage corresponding to the measured light quantity to the control means. The light amount measuring means includes a first light amount measuring unit that measures the transmitted light amount of the first element, and a second light amount measuring unit that measures the transmitted light amount of the second element. Also good.
The light quantity measuring means is not particularly limited and can be appropriately selected according to the purpose. For example, a Si photodiode, a GaAsP photodiode, an InGaAs photodiode, a GaP photodiode, a Ge photodiode, an InAs photodiode, or the like can be used. Can be mentioned. Among these, a Si photodiode having a measurement wavelength region in the visible region and high cost performance is preferable.

  When the light control device of the present invention is a light control glasses, the position of the light amount measuring means is not particularly limited and can be appropriately selected according to the purpose, but as a lens so as not to block the user's field of view. The periphery of the element is preferable, and the vicinity of the armor or the bridge where the wiring to the light amount measuring unit is easily routed is more preferable.

<Control means and control process>
The control means adjusts at least one of the first voltage and the second voltage when the difference in light quantity measured by the light quantity measurement means is out of a predetermined range, and calculates the difference in light quantity. It is a means to control to reduce.
The control step adjusts at least one of the first voltage and the second voltage so as to reduce the light amount difference when it is determined that the measured light amount difference is outside a predetermined range. It is a process and can be suitably performed by the control means.

The control means preferably includes a calculation unit and a voltage application unit, and includes a memory.
The calculation unit can determine the difference in the light amount between the first element and the second element.
The voltage application unit may apply at least one of the first voltage and the second voltage according to the difference in the light amount obtained by the calculation unit.
The memory can store information such as the predetermined range.

  The determination that the control means is out of the predetermined range is performed by measuring the light quantity measurement means by preliminarily determining a predetermined light quantity difference range that can be recognized as different color densities as a predetermined range and storing it in the memory. The control means determines the difference between the light quantity and the predetermined range.

Examples of the process of adjusting the voltage so as to reduce the difference in the amount of light include correcting the voltage application condition of the voltage applied to the element as described below.
Since the voltage application condition of voltage includes two parameters, a voltage value and a voltage application time, correction processing for each of the voltage value and the voltage application time will be described.

[Voltage correction]
As the correction processing of the voltage value, for example, the variation rate of the output voltage of the light amount measuring means with respect to the voltage value when the element is changed from the decolored state to the colored state is set to ΔVon / ΔV, and the element is in the colored state. Assuming that the variation rate of the output voltage of the light amount measuring means with respect to the voltage value when changing from the current state to the decoloring state is ΔVoff / ΔV, a value proportional to the reciprocal of each variation rate (ΔVon / ΔV or ΔVoff / ΔV) is obtained. A correction voltage value may be determined as a correction coefficient. Specifically, when the difference between the output voltage V1 of the light quantity measurement unit in the first element and the output voltage V2 of the light quantity measurement unit in the second element is | V1-V2 | ΔVc is the following equation: ΔVc = α · (ΔV / ΔVon) · | V1−V2 | when changing the element from the decolored state to the colored state, or when changing the element from the colored state to the decolored state. Is represented by the following equation: ΔVc = α · (ΔV / ΔVoff) · | V1−V2 | As a result, when a voltage under the voltage application condition obtained by adding the correction voltage value ΔVc to the initial voltage value V and the voltage value V + ΔVc is applied to the element having the low transmitted light amount, the transmitted light amount of the element having the low transmitted light amount is reduced. It is possible to approach the transmitted light amount of the other element.

As α, the following formula, 0 <α ≦ 1, is preferable, and the following formula, 0.3 <α <0.8 is more preferable. If the following expression is 0.3 <α <0.8, overcorrection is unlikely to occur, damage to the element can be reduced, and the number of corrections can be reduced.
Note that information on ΔVon / ΔV, ΔVoff / ΔV, and α is stored in advance in the memory, and the information is read to calculate the correction voltage value.

[Voltage application time correction]
As the voltage application time correction process, for example, the variation rate of the output voltage of the light amount measuring unit with respect to the voltage application time when the element is changed from a decolored state to a colored state is ΔVon / Δt, and the element is When the variation rate of the output voltage of the light quantity measuring means with respect to the voltage application time when changing from the color development state to the decoloring state is ΔVoff / Δt, it is proportional to the reciprocal number of each variation rate (ΔVon / Δt or ΔVoff / Δt). The correction voltage value may be determined using the value to be corrected as a correction coefficient. Specifically, when the difference between the output voltage V1 of the light quantity measurement unit in the first element and the output voltage V2 of the light quantity measurement unit in the second element is | V1-V2 | When the element is changed from the decolored state to the colored state, the time Δtc is changed to the following equation: Δtc = β · (Δt / ΔVon) · | V1-V2 | or the element is changed from the colored state to the decolored state. In this case, Δtc = β · (Δt / ΔVoff) · | V1−V2 | As a result, when a voltage under the voltage application condition of t + Δtc, which is obtained by adding the correction voltage application time Δtc to the initial voltage application time t, is applied to the element having the low transmitted light amount, the transmitted light amount of the element having the low transmitted light amount is It is possible to approach the transmitted light amount of the element.

β is preferably the following formula, 0 <β ≦ 1, and more preferably the following formula, 0.3 <β <0.8. If the following expression is 0 <β ≦ 1, overcorrection is unlikely to occur, damage to the element can be reduced, and the number of corrections can be reduced.
Note that information on ΔVon / Δt, ΔVoff / Δt, and β is stored in advance in the memory, and the information is read to calculate the correction voltage application time.

  The control means preferably adjusts at least one of a voltage value and a voltage application time in at least one of the first voltage and the second voltage.

  It is preferable that the control unit adjusts the voltage applied to the element having the high light amount with reference to the element having the low light amount among the first element and the second element. By adjusting the voltage of the element in the relatively dark colored state with the light amount being low and relatively dark, the voltage in the decolored state and colored state is adjusted after adjustment. The difference in the amount of light becomes large, and a light control effect with high contrast can be obtained.

<Other means and other processes>
There is no restriction | limiting in particular as said other means, Although it can select suitably according to the objective, It is preferable to have a switch, a power supply, and a flame | frame.
The other steps can be suitably performed by the other means.

<< Switch >>
By switching the switch, for example, one of a state in which a positive voltage is applied between the first electrode layer and the second electrode layer, a state in which a negative voltage is applied, and a state in which no voltage is applied are selected. The state can be selected. Further, there is a mode in which the transmitted light amount of the first element and the transmitted light amount of the second element are respectively measured, and the voltage application condition, that is, at least one of the voltage value and the voltage application time is set based on the measurement result. It may be selectable.
Examples of the switch include a slide switch and a push switch, and may be a switch that can switch at least the above-described three states.

<< Power supply >>
As the power source, any DC power source can be used as long as a voltage of about plus or minus several volts can be applied between the first electrode layer and the second electrode layer. For example, a button battery, A solar cell etc. are mentioned.

<< Frame >>
The frame includes a connection member that holds a peripheral edge of the element and can be electrically connected to the electrode pad. When the light control device of the present invention is light control glasses, it is used as a frame of the light control glasses.

Here, an example of the light control device in the present invention will be described with reference to the drawings.
In addition, in each drawing, the same code | symbol is attached | subjected to the same component and the overlapping description may be abbreviate | omitted. In addition, the number, position, shape, and the like of the following constituent members are not limited to the present embodiment, and can be set to a preferable number, position, shape, and the like in carrying out the present invention.

FIG. 1 is a schematic diagram illustrating an example of a light control device according to the present invention. FIG. 1 shows an example of light control glasses as the light control device.
As shown in FIG. 1, the light control glasses 100 include a first element 11 and a second element 12 as the electrochromic element, a frame 50, and a switch 60.

The first element 11 and the second element 12 are processed according to the rim shape of the frame 50 and are incorporated in the frame 50.
The frame 50 is provided with a switch 60 and the power source (not shown).
The power supply is connected to the first electrode layer and the second electrode layer via the connection member and the electrode pad via the switch 60 via the switch 60, the light amount measuring means (not shown), and the control. The means is electrically connected.

  For example, by applying a positive voltage between the first electrode layer and the second electrode layer, the first element 11 and the second element 12 are colored in a predetermined color. Moreover, by applying a negative voltage between the first electrode layer and the second electrode layer, the first element 11 and the second element 12 are decolored and become transparent.

  However, depending on the characteristics of the material used for the electrochromic layer, color is developed by applying a negative voltage between the first electrode layer and the second electrode layer, and the color is erased by applying a positive voltage. And may become transparent. Note that once the color is developed, the colored state continues even if no voltage is applied between the first electrode layer and the second electrode layer.

2A to 2E are schematic diagrams illustrating an example of a configuration of an electrochromic element used in the light control device of the present invention.
As shown in FIG. 2A, a first electrode layer 11b, an electrochromic (EC) layer 11c, and an insulating inorganic particle layer 11d are formed on the first substrate 11a.
As shown in FIG. 2B, a second electrode layer 11f is formed on the second substrate 11g.
The surface of the insulating inorganic particle layer 11d and the surface of the second electrode layer 11f are overlapped so that a gap is provided between the insulating inorganic particle layer 11d and the second electrode layer 11f, and the first electrode layer When an electrolyte layer 11e is filled and bonded between 11b and the second electrode layer 11f, an electrochromic device as shown in FIG. 2C can be manufactured.

  When the light control device of the present invention is light control glasses, when the electrochromic element is used as a light control lens, the electrochromic element is bent into a desired shape by thermoforming as shown in FIG. 2D. Thereafter, as shown in FIG. 2E, a resin is additionally formed on the outer surface of the bent electrochromic element to thicken the substrate. By cutting the thickened substrate, a desired curved surface is formed, and lens processing (power processing or the like) according to user-specific conditions can be performed to obtain a light control lens. According to this method, it is not necessary to prepare a mold or a member for each product shape, and multi-product small-volume production is facilitated.

FIG. 3 is a block diagram showing an example of the light control device of the present invention.
As illustrated in FIG. 3, the light control device 100 includes a first element 11, a second element 12, a light amount measurement unit 20, a control unit 30, and a power supply 40 that supplies power.

  The first element 11 and the second element 12 are the electrochromic elements, and are connected to a voltage application unit 32 (to be described later) of the control unit 30 and apply a voltage based on the voltage application condition by the voltage application unit 32. Is done.

  The light quantity measurement means 20 includes a first light quantity measurement unit 21 and a second light quantity measurement unit 22 that measure the transmitted light quantities of the first element 11 and the second element 12, respectively. The first light quantity measurement unit 21 and the second light quantity measurement unit 22 are respectively connected to the calculation unit 33 of the control unit 30 and output information on the measured transmitted light amount to the calculation unit 33.

The control unit 30 includes a memory 31, a voltage application unit 32, and a calculation unit 33.
The control means 30 reads and writes the voltage application condition to the memory 31 and, based on the read voltage application condition, the first application element 11 and the second element 12 by the voltage application unit 32 respectively. And the second voltage are applied. In addition, the control unit 30 causes the calculation unit 33 to calculate the transmitted light amount information input from the first light amount measurement unit 21 and the second light amount measurement unit 22, and obtains a new voltage obtained based on the calculation result. The application condition is written in the memory 31.

  The power source 40 supplies power to the entire light control device 100 via the control unit 30.

  Next, the light control device of the present invention is configured as light control glasses, and in order to reduce the difference in the amount of light transmitted through the first element and the second element as the left and right lenses, that is, the difference in color density, The flow for adjusting the voltage applied to the element will be described with reference to FIGS. 1 and 3 in accordance with the step represented by S in the flowchart of FIG.

  In S101, the power supply (not shown) of the light control glasses 100 is turned on, and the process proceeds to S102.

  In S102, the control unit 30 reads from the memory 31 the voltage application condition D1 for coloring the first element 11 and the voltage application condition D2 for coloring the second element 12, and the process proceeds to S103. Note that the predetermined value Vs is determined by the color density.

  In step S103, the control unit 30 applies a voltage that causes the first element 11 and the second element 12 to develop a color by the voltage application unit 32 based on the voltage application conditions D1 and D2 read from the memory 31, and performs processing. The process proceeds to S104.

  In S <b> 104, the control means 30 that develops the color of the first element 11 and the second element 12 respectively outputs the output voltage V <b> 1 of the first light quantity measurement unit 21 in the first element 11 and the second voltage in the second element 12. The output voltage V2 of the second light quantity measurement unit 22 is output, and the process proceeds to S105.

  In S105, the control means 30 calculates | V1-V2 |, which is the absolute value of the difference between the output voltage V1 of the first light quantity measurement unit 21 and the output voltage V2 of the second light quantity measurement unit 22, by the calculation unit 33. Whether or not | V1-V2 | is smaller than a predetermined value Vs is determined. If the control means 30 determines that | V1-V2 | is smaller than Vs, the process proceeds to S106, and if it is determined that | V1-V2 | is equal to or greater than Vs, the process proceeds to S107. Note that the predetermined value Vs is an output voltage difference of the light amount measuring unit recognized that the color density is different, and is stored in advance in a memory.

  In S106, the control means 30 having determined that | V1-V2 | is smaller than Vs causes the voltage applying unit 32 to apply a voltage that causes the first element 11 and the second element 12 to be erased, and ends this processing. To do.

  In S107, the control means 30 that determines that | V1-V2 | is equal to or higher than Vs causes the calculation unit 33 to calculate the following expression, V1-V2 <0, and the output voltage V1 of the first light quantity measurement unit 21 and It is determined whether any of the output voltages V2 of the second light quantity measuring unit 22 is large. If the control means 30 determines that the output voltage V1 is smaller than the output voltage V2, the process proceeds to S108. If the control means 30 determines that the output voltage V1 is greater than the output voltage V2, the process proceeds to S110.

  In S108, the control means 30 that has determined that the output voltage V1 is smaller than the output voltage V2 corrects the voltage application condition D2 by adding ΔD so that the output voltage V1 and the output voltage V2 are equivalent to each other, The process proceeds to S109.

  In S109, the control unit 30 rewrites the voltage application condition in the memory to a value obtained by correcting the voltage application condition D2, and the process proceeds to S201.

  In S110, the control means 30 that has determined that the output voltage V1 is greater than the output voltage V2 corrects the voltage application condition D1 by adding ΔD so that the output voltage V1 and the output voltage V2 are equivalent to each other, The process proceeds to S111.

  In S111, the control unit 30 rewrites the voltage application condition in the memory to a value obtained by correcting the voltage application condition D1, and the process proceeds to S301.

  In S201, the control unit 30 causes the voltage application unit 32 to apply a voltage to be erased to the first element 11 and the second element 12, and the process proceeds to S202.

  In S202, the control unit 30 reads the voltage application condition D1 and the corrected voltage application condition D2 from the memory 31, and the process proceeds to S203.

  In S203, the control unit 30 causes the voltage application unit 32 to apply a voltage to the first element 11 and the second element 12 based on the voltage application conditions D1 and D2 read from the memory 31, and the process proceeds to S204. To do.

  In S <b> 204, the control means 30 that applied voltages to the first element 11 and the second element 12 respectively outputs the output voltage V <b> 1 by the first light quantity measurement unit 21 and the output voltage V <b> 2 by the second light quantity measurement unit 22. Is output, and the process proceeds to S205.

  In S205, the control unit 30 causes the calculation unit 33 to calculate | V1-V2 | which is the absolute value of the difference between the output voltage V1 and the output voltage V2, and whether | V1-V2 | is smaller than a predetermined value Vs. Determine whether. If the control means 30 determines that | V1-V2 | is smaller than Vs, the process proceeds to S106, and if it is determined that | V1-V2 | is equal to or greater than Vs, the process proceeds to S206.

  In S206, the control means 30 that has determined that | V1-V2 | is equal to or higher than Vs causes the calculation unit 33 to calculate the following expression, V1-V2 <0, and either the output voltage V1 or the output voltage V2 is large. It is determined whether. If the control means 30 determines that the output voltage V1 is smaller than the output voltage V2, the process proceeds to S207. If the control means 30 determines that the output voltage V1 is greater than the output voltage V2, the process proceeds to S208.

  In S207, the control means 30 that has determined that the output voltage V1 is smaller than the output voltage V2 corrects the voltage application condition D2 by adding ΔD so that the output voltage V1 and the output voltage V2 are equivalent to each other, The process proceeds to S209.

  In S208, the control means 30 that has determined that the output voltage V1 is larger than the output voltage V2 corrects by subtracting ΔD from the voltage application condition D2 so that the output voltage V1 and the output voltage V2 are equal to each other, The process proceeds to S209.

  In S209, the control unit 30 rewrites the voltage application condition in the memory to a value obtained by correcting the electric application condition D2, and returns the process to S201.

  In S301, the control unit 30 causes the voltage application unit 32 to apply a voltage to be erased to the first element 11 and the second element 12, and the process proceeds to S302.

  In S302, the control unit 30 reads the corrected voltage application condition D1 and the voltage application condition D2 from the memory 31, and the process proceeds to S303.

  In S303, the control unit 30 causes the voltage application unit 32 to apply a voltage to the first element 11 and the second element 12 based on the voltage application conditions D1 and D2 read from the memory 31, and the process proceeds to S304. To do.

  In S <b> 304, the control means 30 that applied voltages to the first element 11 and the second element 12 respectively outputs the output voltage V <b> 1 by the first light quantity measurement unit 21 and the output voltage V <b> 2 by the second light quantity measurement unit 22. Is output, and the process proceeds to S305.

  In S305, the control unit 30 causes the calculation unit 33 to calculate | V1-V2 |, which is the absolute value of the difference between the output voltage V1 and the output voltage V2, and whether | V1-V2 | is smaller than a predetermined value Vs. Determine whether. If the control means 30 determines that | V1-V2 | is smaller than Vs, the process proceeds to S106, and if it is determined that | V1-V2 | is equal to or greater than Vs, the process proceeds to S306.

  In S306, the control means 30 having determined that | V1-V2 | is equal to or higher than Vs causes the calculation unit 33 to calculate the following expression, V1-V2 <0, and either the output voltage V1 or the output voltage V2 is greater. It is determined whether. If the control means 30 determines that the output voltage V1 is smaller than the output voltage V2, the process proceeds to S307. If the control means 30 determines that the output voltage V1 is equal to or higher than the output voltage V2, the process proceeds to S308.

  In S307, the control means 30 that has determined that the output voltage V1 is smaller than the output voltage V2 corrects by subtracting ΔD from the voltage application condition D1 so that the output voltage V1 and the output voltage V2 are equal to each other, The process proceeds to S309.

  In S308, the control means 30 that has determined that the output voltage V1 is equal to or higher than the output voltage V2 corrects the voltage application condition D1 by adding ΔD so that the output voltage V1 and the output voltage V2 are equivalent to each other, The process proceeds to S309.

  In S309, the control unit 30 rewrites the voltage application condition in the memory to a value obtained by correcting the electric application condition D1, and returns the process to S301.

  Next, since the voltage application condition includes two parameters, a voltage value and a voltage application time, the voltage value and the voltage application time will be described with reference to FIGS. 5A, 5B, 6A, and 6B.

5A and 5B are graphs showing an example of the relationship between the applied voltage in the element used in the light control device of the present invention and the output voltage of the light quantity measuring means. FIG. 5A is a diagram when the voltage value is lowered and the element is changed from a decolored state to a colored state, and FIG. 5B is a diagram when the voltage value is increased and the element is erased from the colored state. It is a figure when changing to a color state.
As shown in FIGS. 5A and 5B, the change in the output voltage of the light quantity measuring means corresponds to the change in the transmitted light quantity.
Further, the range in which the output voltage of the light amount measuring means changes almost linearly with respect to the voltage applied to the element is set as a set range, and is proportional to the respective fluctuation rate, that is, the reciprocal of the slope (ΔVon / ΔV or ΔVoff / ΔV). The correction voltage value may be determined using the value to be corrected as a correction coefficient.

6A and 6B are graphs showing an example of the relationship between the voltage application time and the output voltage of the light quantity measuring means in the element used in the light control device of the present invention. FIG. 6A is a diagram when the voltage value is lowered and the element is changed from a decolored state to a colored state, and FIG. 6B is a diagram when the voltage value is increased and the element is erased from the colored state. It is a figure when changing to a color state.
As shown in FIG. 6A and FIG. 6B, the range in which the output voltage of the light amount measuring means changes almost linearly with respect to the voltage application time is set as a set range, and each variation rate, that is, the slope (ΔVon / Δt or ΔVoff / Δt). The correction voltage application time may be determined using a value proportional to the reciprocal of () as a correction coefficient.

  Examples of the present invention will be described below, but the present invention is not limited to these examples.

(Production Example 1)
<Production of electrochromic device>
-Fabrication of first substrate-
As a first substrate, an elliptical polycarbonate substrate having a major axis length of 80 mm, a minor axis length of 55 mm, and an average thickness of 0.5 mm was produced.

-Formation of the first electrode layer-
An ITO film having an average thickness of 100 nm was formed as a first electrode layer on the first substrate by sputtering.

-Formation of electrochromic layer-
A titanium oxide nanoparticle dispersion (SP-210, manufactured by Showa Denko Ceramics Co., Ltd., average particle size 20 nm) is applied to the surface of the obtained first electrode layer by a spin coating method, and annealed at 120 ° C. for 5 minutes. As a result, a titanium oxide particle film (nanostructure semiconductor material) having an average thickness of 1.0 μm was formed.
Next, as an electrochromic compound, a 2,2,3,3-tetrafluoropropanol solution containing 1.5% by mass of a dipyridine compound represented by the following structural formula (1) was applied by a spin coating method, and the temperature was 120 ° C. An electrochromic layer was formed by carrying (annealing) the titanium oxide particle film by annealing for 10 minutes.

[Structural formula (1)]

-Formation of insulating inorganic particle layer-
On the obtained electrochromic layer, a SiO ₂ particle dispersion having a primary particle number average particle diameter of 20 nm (silica solid content concentration 24.8% by mass, polyvinyl alcohol 1.2% by mass, and water 74.0% by mass). ) Was applied by spin coating to form an insulating inorganic particle layer having an average thickness of 2 μm.

-Production of second substrate-
As the second substrate, a polycarbonate substrate similar to the first substrate was produced.

-Formation of second electrode layer-
On the second substrate, an ITO film having an average thickness of 100 nm was formed as a second electrode layer by sputtering.

-Formation of electrolyte-
On the surface of the insulating inorganic particle layer, polyethylene diacrylate, a photopolymerization initiator (IRGACURE (registered trademark) 184, manufactured by BASF) and an electrolyte (1-ethyl-3-methylimidazolium salt) are 100: The first electrode layer and the second electrode layer are applied by applying a solution mixed at 5:40 (mass ratio) and bonding the solution to the second electrode layer surface of the second substrate, followed by UV curing. During this time, an electrolyte was formed.

-Formation of protective layer-
An ultraviolet curable adhesive (KAYARAD R-604, manufactured by Nippon Kayaku Co., Ltd.) is dropped on the side surface of the laminated inorganic particle layer and the second electrode layer, and cured by ultraviolet light irradiation. A protective layer having an average thickness of 3 μm was formed.
As described above, two electrochromic elements before thermoforming as shown in FIG. 2C were produced.

<Production of light control device>
-Bending of electrochromic elements-
Bending was performed to pressurize at a mold temperature of 145 ° C. for 90 seconds to give a curvature radius of 130 mm, and two electrochromic elements as shown in FIG. 2D were obtained.

-Thickening of electrochromic devices-
After setting the convex surface side of the bent electrochromic element in the center of the concave mold for injection molding, the convex mold paired with the concave mold is superimposed on the concave mold, and the curvature radius is 90 mm. It was set in an injection molding machine as a mold having a curved surface. Polycarbonate resin was injection-molded into the electrochromic element on the mold by the injection molding machine, and the two electrochromic elements as shown in FIG. 2E were thickened.

-External processing of electrochromic elements-
The two electrochromic elements having the increased thickness are processed into a lens shape so as to fit in the shape of the rim of the frame of the light control glasses, and protrusions having a width of 3 mm and a length of 5 mm are formed on both sides of the electrochromic element in the major axis direction. Each part was formed.

-Formation of electrode pads in electrochromic devices-
A silver paste (Dotite, manufactured by Fujikura Kasei Co., Ltd.) as a conductive adhesive is applied to each of the protrusions of the two electrochromic elements using a brush or toothpick, and a copper foil is wound thereon to 60 ° C. Is cured for 15 minutes at the end of the first electrode layer or the second electrode layer exposed by shaving the protective layer, and the copper foil is electrically connected with the silver paste. Thus, electrode pads were formed.

-Production of dimming glasses-
Next, the electrochromic element is mounted on the rim of the frame on which the first light quantity measurement unit, the second light quantity measurement unit, the switch, the power source, and the control unit are mounted, and is arranged on the electrode pad and the frame. The light control glasses 1 as a light control device were manufactured by electrically connecting to the connecting member.
In the following description of Examples 1 to 4, the two electrochromic elements attached to and electrically connected to the light control glasses 1 are referred to as “first element” and “second element”. Distinguish.

Example 1
In the first embodiment, the voltage value of the voltage application condition is corrected with a predetermined correction voltage value to reduce the output voltage difference between the first light quantity measurement unit and the second light quantity measurement unit, and the first The color densities of one element and the second element were made to be the same.
In the obtained light control glasses 1, the first element and the second element are subjected to a voltage application condition with a voltage value of −3.0 V and a voltage application time of 3 seconds. Between the first electrode layer and the second electrode layer so that the first electrode layer is a negative electrode, and a color is developed. Next, light from a D65 light source that is a standard light source is transmitted through the first element and the second element, and the first element is measured by the first light quantity measurement unit and the second light quantity measurement unit. When the transmitted light amount and the transmitted light amount in the second element were measured, the output voltage of the second light amount measurement unit in the second element was 1.3 V, and the first element in the first element was The output voltage of the light quantity measuring unit was 1.2V.

  Therefore, after both the first element and the second element are decolored once, the voltage value of the voltage application conditions of the second element is set as the output voltage of the first light quantity measuring unit. The voltage value corresponding to an output voltage difference of 0.1 V, which is the difference from the output voltage of the second light quantity measurement unit, was added to change to -3.2 V to correct. That is, the voltage application condition of the first element is a voltage value of −3.0 V and a voltage application time of 3 seconds, and the voltage application condition of the second element is a voltage value of −3.2 V and a voltage application time of 3 When voltage was applied for each second, the output voltage of the second light quantity measurement unit was higher than the output voltage of the first light quantity measurement unit by 0.05V. As a result, the output voltage difference was reduced, and the difference in the amount of transmitted light between the first element and the second element could be reduced.

(Example 2)
In the second embodiment, the voltage value of the voltage application condition is corrected to a value smaller than a predetermined correction voltage value, and the first light amount measurement unit and the second light amount measurement unit are suppressed while suppressing damage to the element due to overcorrection. The output voltage difference from the light quantity measuring unit of the first element and the second element are reduced so that the color densities of the first element and the second element are close to each other.

  The light control glasses 2 of Example 2 were produced in the same manner as in Example 1 except that the electrochromic element in Example 1 was replaced with an electrochromic element having a different production lot.

  In the obtained dimming glasses 2, the first electrode layer and the second element are subjected to a voltage application condition with a voltage value of −3.0 V and a voltage application time of 3 seconds. Between the first electrode layer and the second electrode layer so that the first electrode layer is a negative electrode, and a color is developed. Next, the light from the D65 light source is transmitted through the first element and the second element, and the transmitted light amount in the first element and the transmitted light amount in the second element are respectively measured by the light amount measuring means. As a result, the output voltage of the first light quantity measurement unit was 0.2 V higher than the output voltage of the second light quantity measurement unit.

  Therefore, after both the first element and the second element are once decolored, the voltage value of the voltage application condition of the first element is set to the output voltage difference 0. The voltage value corresponding to 2V was added and changed to -3.4V for correction. That is, the voltage application condition of the first element is a voltage value of −3.4 V and the voltage application time is 3 seconds, and the voltage application condition of the second element is a voltage value of −3.0 V and a voltage application time of 3 When a voltage was applied for each second, the voltage was excessively corrected, and the output voltage of the first light quantity measurement unit was 0.05 V lower than the output voltage of the second light quantity measurement unit. As a result, the output voltage difference can be reduced, and the difference in the amount of light transmitted through the first element and the second element can be reduced. However, if the correction voltage value is large, the difference is excessively corrected. Was confirmed.

  Again, after both the first element and the second element are once decolored, the voltage value of the voltage application conditions of the first element is set to the output voltage difference 0. The voltage value corresponding to 05V was added and changed to -3.2V for correction. That is, the voltage application condition of the first element is a voltage value of -3.2 V and the voltage application time is 3 seconds, and the voltage application condition of the second element is a voltage value of -3.0 V and a voltage application time of 3 When voltage was applied for each second, the output voltage of the first light quantity measurement unit was 0.07 V higher than the output voltage of the second light quantity measurement unit. Thereby, since the output voltage difference could be reduced, the difference in transmitted light amount between the first element and the second element could be reduced.

Subsequently, after both the first element and the second element are once decolored, the voltage application condition of the first element is set to a voltage value of -3.3 V, a voltage application time of 3 seconds, Moreover, when the voltage application conditions of the second element were set to a voltage value of −3.0 V and a voltage application time of 3 seconds, respectively, the voltage was applied, and the output voltage of the first light quantity measurement unit was the second light quantity measurement unit. It was 0.02V higher than the output voltage. Thereby, since the output voltage difference could be reduced, the difference in transmitted light amount between the first element and the second element could be reduced.
Although the number of corrections increased from that in Example 1, damage to the element due to overcorrection could be suppressed.

(Example 3)
In the third embodiment, the dimming glasses 1 of the first embodiment are used to correct the voltage application time of the voltage application conditions by a predetermined voltage application time, while suppressing damage to the element due to overcorrection. The output voltage difference between the first light quantity measurement unit and the second light quantity measurement unit is reduced so that the color densities of the first element and the second element are close to the same.

  A voltage under a voltage application condition in which the voltage value is −3.0 V and the voltage application time is 3 seconds is applied to the first element and the second element in the light control glasses 1, and the first electrode layer and the second element. The first electrode layer was applied between the two electrode layers so as to be a negative electrode, and a color was developed. Next, the light from the D65 light source is transmitted through the first element and the second element, and the transmitted light amount in the first element and the transmitted light amount in the second element are respectively measured by the light amount measuring means. As a result, the output voltage of the second light quantity measurement unit was 0.1 V higher than the output voltage of the first light quantity measurement unit.

  Therefore, after both the first element and the second element are once decolored, the voltage application condition of the first element is set to a voltage value of −3.0 V and a voltage application time of 3 seconds. When the voltage application condition of the second element is set to a voltage value of −3.0 V and a voltage application time of 3.5 seconds, and the voltage is applied, the output voltage of the second light quantity measurement unit is the first light quantity measurement. It was 0.02 V higher than the output voltage of the part. As a result, the output voltage difference was reduced, and the difference in the amount of transmitted light between the first element and the second element could be reduced.

Example 4
In the fourth embodiment, the dimming glasses 2 of the second embodiment are used to correct the voltage application time to a value smaller than the predetermined voltage application time in the voltage application conditions, thereby suppressing damage to the element due to overcorrection. However, the difference in output voltage between the first light quantity measurement unit and the second light quantity measurement unit is reduced so that the color densities of the first element and the second element are made close to each other.

  In the obtained dimming glasses 2, the first electrode layer and the second element are subjected to a voltage application condition with a voltage value of −3.0 V and a voltage application time of 3 seconds. Between the first electrode layer and the second electrode layer so that the first electrode layer is a negative electrode, and a color is developed. Next, the light from the D65 light source is transmitted through the first element and the second element, and the transmitted light amount in the first element and the transmitted light amount in the second element are respectively measured by the light amount measuring means. As a result, the output voltage of the first light quantity measurement unit was 0.2 V higher than the output voltage of the second light quantity measurement unit.

  Therefore, after both the first element and the second element are once decolored, the voltage application time of the voltage application conditions of the first element is set to the output voltage difference 0 of the light quantity measuring unit. Correction was made by adding the voltage application time corresponding to 0.2 V to 4.4 seconds. That is, the voltage application condition of the first element is a voltage value of −3.0 V and the voltage application time is 4.4 seconds, and the voltage application condition of the second element is a voltage value of −3.0 V and voltage application. When the voltage was applied for 3 seconds, the voltage was excessively corrected, and the output voltage of the first light quantity measurement unit was 0.06 V higher than the output voltage of the second light quantity measurement unit. It was confirmed that when the correction voltage value is large, the correction is excessive.

  Again, after both the first element and the second element are once decolored, the voltage application time of the voltage application conditions of the first element is set to the output voltage difference 0 of the light quantity measuring unit. A correction was made by adding a value obtained by multiplying the voltage application time corresponding to 0.06V by 0.5 to 3.7 seconds. That is, the voltage application condition of the first element is a voltage value of −3.0 V and the voltage application time is 3.7 seconds, and the voltage application condition of the second element is a voltage value of −3.0 V and voltage application. When a voltage was applied for 3 seconds, the output voltage of the first light quantity measurement unit was 0.07 V higher than the output voltage of the second light quantity measurement unit.

Subsequently, after both the first element and the second element are once decolored, the voltage application condition of the first element is a voltage value of −3.0 V, a voltage application time of 4 seconds, Moreover, when the voltage application conditions of the second element were set to a voltage value of −3.0 V and a voltage application time of 3 seconds, respectively, the voltage was applied, and the output voltage of the first light quantity measurement unit was the second light quantity measurement unit. It was 0.02V higher than the output voltage. Thereby, since the output voltage difference could be reduced, the difference in transmitted light amount between the first element and the second element could be reduced.
Although the number of corrections increased from that in Example 3, damage to the element due to overcorrection could be suppressed.

As an aspect of this invention, it is as follows, for example.
<1> a first element in which the amount of transmitted light changes according to the applied first voltage, a second element in which the amount of transmitted light changes in accordance with the applied second voltage, and the first When the difference between the light quantity measured by the light quantity measurement means and the light quantity measured by the light quantity measurement means is outside a predetermined range, the first voltage and the second voltage And a control means for adjusting so as to reduce the difference in the amount of light by adjusting at least one of the voltages.
<2> The light control device according to <1>, wherein the control unit adjusts at least one of a voltage value and a voltage application time in at least one of the first voltage and the second voltage. .
<3> The control unit adjusts the voltage applied to the element having a high light amount based on the element having the low light amount among the first element and the second element. <2> The light control device according to any one of <2>.
<4> The control unit calculates a difference between the light amounts of the first element and the second element, the first voltage according to the difference between the light amounts calculated by the calculation unit, and the The light control device according to any one of <1> to <3>, further including a voltage application unit that applies at least one of the second voltages.
<5> The light control device according to any one of <1> to <4>, wherein the light amount measurement unit is a Si photodiode.
<6> The light control device according to any one of <1> to <5>, wherein the element is an electrochromic element.
<7> The electrochromic element includes a first substrate, a first electrode layer, an electrochromic layer, an insulating inorganic particle layer, a second electrode layer, and a second substrate in this order. The light control device according to <6>, further including an electrolyte between the first electrode layer and the second electrode layer.
<8> The light control device according to <7>, wherein the electrochromic layer has a structure in which an organic electrochromic compound is supported on conductive or semiconductive fine particles.
<9> The light control device according to any one of <7> to <8>, wherein the electrolyte includes inorganic particles.
<10> The light control device according to any one of <1> to <9>, wherein the light control glasses are light control glasses.
<11> The light control device according to <10>, wherein the light amount measurement unit is arranged in any of an armor and a bridge in a spectacle frame.
<12> The amount of light transmitted through the first element that changes the amount of light transmitted according to the applied first voltage and the second element that changes the amount of light transmitted according to the applied second voltage. When it is determined that the difference between the measured light quantity and the measured light quantity is outside a predetermined range, the difference between the light quantities is adjusted by adjusting at least one of the first voltage and the second voltage. A dimming method comprising: a control step of controlling so as to reduce light.
<13> The dimming method according to <12>, wherein the control step adjusts at least one of a voltage value and a voltage application time in at least one of the first voltage and the second voltage. .
<14> From the above <12>, wherein the control step adjusts the voltage applied to the element having a high light amount with reference to the element having the low light amount among the first element and the second element. <13> The light control method according to any one of the above.
<15> The control process includes a calculation process for obtaining a difference between the light amounts in the first element and the second element, the first voltage according to the difference in the light quantity obtained by the calculation process, and the The dimming method according to any one of <12> to <14>, further including a voltage application process for applying at least one of the second voltages.

  The dimming device according to any one of <1> to <11> and the dimming method according to any one of <12> to <15> solve the problems in the related art, and the present invention. Can achieve the purpose.

DESCRIPTION OF SYMBOLS 11 1st element 12 2nd element 20 Light quantity measurement means 21 1st light quantity measurement part 22 2nd light quantity measurement part 30 Control means 31 Memory 32 Voltage application part 33 Calculation part 40 Power supply 100 Light control apparatus (Light control glasses) )

JP-A-4-306614 JP-A-9-179075

Claims (8)

A first element that changes the amount of light transmitted according to a first voltage applied;
A second element in which the amount of transmitted light changes according to the applied second voltage;
A light amount measuring means for respectively measuring the amount of light transmitted through the first element and the second element;
When the light amount difference measured by the light amount measuring means is outside a predetermined range, control is performed so as to reduce the light amount difference by adjusting at least one of the first voltage and the second voltage. Control means for
A light control device comprising:   The light control device according to claim 1, wherein the control unit adjusts at least one of a voltage value and a voltage application time in at least one of the first voltage and the second voltage.   The said control means adjusts the said voltage applied to the said element with said high light quantity on the basis of the said element with low said light quantity among said 1st element and said 2nd element. The light control apparatus as described in.   The control means calculates a difference between the light amounts in the first element and the second element, and the first voltage and the second voltage according to the difference in the light amounts obtained by the calculation unit. The light control device according to claim 1, further comprising a voltage application unit that applies at least one of the voltages.   The light control device according to claim 1, wherein the element is an electrochromic element.   The electrochromic element has a first substrate, a first electrode layer, an electrochromic layer, an insulating inorganic particle layer, a second electrode layer, and a second substrate in this order. The light control device according to claim 5, further comprising an electrolyte between the first electrode layer and the second electrode layer.   The light control device according to claim 1, wherein the light control device is a light control glasses. Measure the amount of light transmitted through the first element that changes the amount of light transmitted according to the applied first voltage and the second element that changes the amount of light transmitted according to the applied second voltage. A light intensity measurement process;
When it is determined that the measured difference in the amount of light is outside a predetermined range, control is performed so as to reduce the difference in the amount of light by adjusting at least one of the first voltage and the second voltage. Process,
The light control method characterized by including.