Abstract: A measuring device includes a first space for pressurizing a pressurization target and a second space independent of the first space. The measuring device includes a first exhaust valve closing or opening a communication port communicating the first space with another space. An open/closed state of the first exhaust valve changes in accordance with a pressure difference between the first space and the second space.

Abstract: A vehicle light-adjusting window and a vehicle light-adjusting window system capable of clearly projecting a video are provided. A vehicle light-adjusting window includes a transparent plate, a first conductive film, a light-adjusting layer, a second conductive film, and a projection film, which are arranged in this order.

Abstract: A vehicle light-adjusting window and a vehicle light-adjusting window system capable of clearly projecting a video are provided. A vehicle light-adjusting window includes a transparent plate, a first conductive film, a light-adjusting layer, a second conductive film, and a projection film, which are arranged in this order.

Abstract: A light emitting device to be mounted on a mount surface of a vehicular compartment includes a housing including a first section having an air intake hole and a second section having an air discharge hole, a cooling fan device arranged in the first section, and a light emitter arranged in the second section. The housing further includes a discharge cavity having the discharge hole. The light emitter and the cooling fan device are arranged in a first arrangement direction laterally along the mount surface. The light emitter includes a board member and a light emitting element. The board member has a first surface that is opposite the mount surface and a second surface that is an opposite surface of the first surface and on which the light emitting element is mounted. The first surface of the board member is defined as a portion of the discharge cavity.

Abstract: A vehicle light-adjusting window and a vehicle light-adjusting window system capable of clearly projecting a video are provided. A vehicle light-adjusting window includes a transparent plate, a first conductive film, a light-adjusting layer, a second conductive film, and a projection film, which are arranged in this order.

Abstract: A light control film to be bonded to a panel member for a vehicle includes film substrates, conductive layers, and a liquid crystal layer. The conductive layers are on surfaces of the film substrates opposed to each other, respectively. The liquid crystal layer is sandwiched between conductive layers. The light control film is switchable between a first state with a first haze percentage and a second state with a second haze percentage that is lower than the first haze percentage. Each film substrate includes at least an acrylic imide layer made of acrylic imide. Each conductive layer includes a thin silver film or a copper wire mesh.

Abstract: A light control film to be bonded to a panel member for a vehicle includes film substrates, conductive layers, and a liquid crystal layer. The conductive layers are on surfaces of the film substrates opposed to each other, respectively. The liquid crystal layer is sandwiched between conductive layers. The light control film is switchable between a first state with a first haze percentage and a second state with a second haze percentage that is lower than the first haze percentage. Each film substrate includes at least an acrylic imide layer made of acrylic imide. Each conductive layer includes a thin silver film or a copper wire mesh.

Abstract: A diarylethene compound represented by formula (I) wherein, Sg is a monovalent sugar residue formed by removing one hydroxyl group from a sugar compound or a monovalent protected sugar residue formed by removing one hydroxyl group from a sugar compound in which one or more other hydroxyl groups are protected, and wherein the sugar is selected from the group consisting of a six-membered ring sugar, a five-membered ring sugar, cyclitol, and oligosaccharides containing a six-membered ring sugar, a five-membered ring sugar, or cyclitol; U is —(CH2)n—, —CH2—U?—, or —C(?O)— wherein n is an integer of 1 to 5, U? is a C2-C10 branched alkylene group binding to Ar); and Ar is a group represented by formula (A1) or (A2); wherein, X is S, SO2, NR3 in which R3 is a C1-C3 alkyl group, or O, R is C1-C4 alkyl group, R1 and R2 are independently a C1-C3 alkyl group, a is 0 or 1, b is an integer of 0-3, and * represents a bond with U; Y is a hydrogen atom or a halogen atom; and m is an integer of 3 to 5.

Abstract: A diarylethene compound having high water-solubility is provided, and the compound is a diarylethene compound of formula (I) wherein, Sg is a monovalent sugar-type residue consisting of a sugar-type compound (in which some of hydroxyl groups may be protected) selected from a group consisting of a six-membered ring sugar, a five-membered ring sugar, cyclitol and oligosaccharides containing a six-membered ring sugar, a five-membered ring sugar, or cyclitol and excluding an hydroxyl group; U is —(CH2)n-, —CH2—U?—, or —C(?O)— (wherein, n is an integer of 1 to 5, U? is a C1-C10 alkyl group binding to Ar); and Ar is a group represented by formula (A1) or (A2); wherein, X is S, SO2, NR3 (R3 is a C1-C3 alkyl group) or O, R is C1-C4 alkyl group, R1 and R2 are independently a C1-C3 alkyl group, a is 0 or 1, b is an integer of 0-3, and * represents a bond with U); Y is a hydrogen atom or a halogen atom; m is an integer of 5-7.

Abstract: Disclosed is light-driven actuator element characterized in that, inter alia, it can be reduced to micrometer size, is rapidly responsive, and reversibly changes to enable repeated use. The light-driven actuator element includes a crystal of diarylethene compound which changes shape upon photoisomerization (e.g., the compound of Structural Formula (I) below, where R1 represents a hydrogen atom or methyl group and R2 represents a methyl group). The element can be a rod-shaped or plate-like microcrystal having a size on the order of micrometer. The element bends (or contracts) on irradiation with ultraviolet light and expands to return to the original size on irradiation with visible light.

Abstract: A toy comprises a toy element comprising a photochromic layer which contains a photochromic compound having a photo memory function (color-memorizing photochromic property), maintains a coloring state by developing a color through the irradiation of ultraviolet rays or sunlight containing ultraviolet rays and changes into decolorizing state through its decolorization by the irradiation of visible light, and a color-changing means which contains at least one of an ultraviolet ray absorbent and a light-shading pigment capable of shading at least ultraviolet rays, changes the photochromic compound of the coloring state into decolorizing state by cutting off ultraviolet rays of sunlight and thereby effecting irradiation of visible light, and maintains the changed state, wherein a function to memorize and maintain coloring and decolorizing states alternately is expressed by arranging the color-changing means under such a condition that it is contacted or non-contacted with the photochromic layer.

Abstract: Disclosed is light-driven actuator element characterized in that, inter alia, it can be reduced to micrometer size, is rapidly responsive, and reversibly changes to enable repeated use. The light-driven actuator element includes a crystal of diarylethene compound which changes shape upon photoisomerization (e.g., the compound of Structural Formula (I) below, where R1 represents a hydrogen atom or methyl group and R2 represents a methyl group). The element can be a rod-shaped or plate-like microcrystal having a size on the order of micrometer. The element bends (or contracts) on irradiation with ultraviolet light and expands to return to the original size on irradiation with visible light.

Abstract: A color-memorizing photochromic writing instrument, which comprises a writing tip portion connected to a light-shielding tubular member or refill; and a color-memorizing photochromic ink, wherein the ink is prepared by dissolving, dispersing or suspending a diarylethene photochromic compound in a vehicle containing at least a solvent and a binder, wherein the diarylethene photochromic compound is in a coloring state, and a color-memorizing photochromic writing instrument set comprising the writing instrument and a color-changing means.

Abstract: Provided are an indicating material having excellent facility and high security and an indicating method for recording and indicating information on this indicating material. The indicating material has a structure that an ultraviolet light-screening layer having visible light-transmitting ability is laminated on a recording layer having visible light-transmitting ability and composed of a recording layer-forming material containing a color-developing component that becomes a color-developed state by the action of ultraviolet light. The indicating method is an indicating method for recording and indicating information on the above-described indicating material, comprising condensing a laser beam having a wavelength of a visible range or longer on the recording layer in the indicating material to irradiate the recording layer with the laser beam and recording and indicating the information by two-photon absorption.

Abstract: An ink composition for a color-memorizing photochromic writing instrument, which comprises a photochromic agent containing a diarylethene photochromic compound dissolved, dispersed or suspended in a vehicle containing at least a solvent and a binder.

Abstract: To detect an irradiated radiation efficiently, so that the dose can be measured with high sensitivity. A photochromic material comprising an illuminant(s) which emits a light when irradiated with a radiation and a diarylethene photochromic compound(s) having a specific structure, and a color dose meter employing it.

Abstract: A photochromic material having a ring opening quantum yield of 10?3 or lower which does not fade under ambient light is provided. The material comprises a compound belonging to the diheteroarylethene class. The compound has alkoxy group and aryl group on the heteroaryl group.

Abstract: A color-memorizing photochromic writing instrument, which comprises a writing tip portion connected to a light-shielding tubular member or refill; and a color-memorizing photochromic ink, wherein the ink is prepared by dissolving, dispersing or suspending a diarylethene photochromic compound in a vehicle containing at least a solvent and a binder, wherein the diarylethene photochromic compound is in a coloring state, and a color-memorizing photochromic writing instrument set comprising the writing instrument and a color-changing means.

Abstract: Optical recording material which is capable of recording and reading an information signal by utilizing a change in the double refraction caused by a change in the molecular orientation of a side-chain type polymer liquid crystal which has an electrocyclic-reaction-type photochromic compound (or a residue thereof), or a side-chain polymer liquid crystal having in a polymer chain thereof a monomeric unit to which the photochromic compound is bonded.

Abstract: A near-field optical recording medium comprises a recording layer capable of writing, reading and erasing information using an evanescent light, the evanescent light having a beam spot size smaller than the wavelength of a source light, wherein the recording layer is a stable amorphous layer mainly comprising a photochromic compound having a glass transition point of 55° C. or higher and a molecular weight of 3000 or less.