77results about "Record carrier materials" patented technology

A holographic photopolymer material, a holographic photosensitive film, a holographic optical element, and a display device, wherein the holographic photopolymer material includes a polymer matrix, photopolymerizable monomers, and a photosensitizer. An index of refraction of the photopolymerizable monomer is greater than an index of refraction of the polymer matrix. A molecular structure of the polymer matrix includes a linear structure, and branch chains of the polymer matrix include activation groups; and / or the molecular structure of the polymer matrix includes a crosslinked structure.

One embodiment of the nonlinear light-absorbing material disclosed herein comprises a compound represented by the following formula (1) as its main component. In formula (1), R 1 ~R 10 Each group can be a hydrogen atom, halogen atom, saturated hydrocarbon group, haloalkyl group, unsaturated hydrocarbon group, hydroxyl group, carboxyl group, alkoxycarbonyl group, aldehyde group, acyl group, amide group, nitrile group, alkoxy group, acyloxy group, thiol group, alkylthio group, sulfonic acid group, acylthio group, alkylsulfonyl group, sulfonamide group, primary amino group, secondary amino group, tertiary amino group, or nitro group.

Holographic photopolymer materials, holographic photosensitive films, holographic optical elements, and display devices are provided. The holographic photopolymer material comprises a polymer matrix, a photopolymerizable monomer, and a photosensitizer. The refractive index of the photopolymerizable monomer is greater than that of the polymer matrix. The molecular structure of the polymer matrix includes a linear structure, the branched chains of the polymer matrix include activating groups, and / or the molecular structure of the polymer matrix includes a crosslinked structure. Because polymer matrices with a crosslinked molecular structure have a high glass transition temperature, holographic photopolymer materials have good heat resistance. Because holographic photopolymer materials with a linear molecular structure include activating groups that can form crosslinked structures, optical elements made from holographic photopolymer materials can have crosslinked structures, i.e., optical elements can have good heat resistance. Holographic photopolymer materials have good heat resistance, or optical elements made from holographic photopolymer materials can have good heat resistance.

The application discloses a kind of light information storage methods based on Au-NaYF4:Eu 3+ -Au array, according to the product induced by surface plasmon has the "memory" characteristics to the power induced its transformation, first plating a layer of gold island film on glass substrate, then NaYF4:Eu 3+ Nanoparticle is uniformly dropped on gold island film, and gold is sprayed on its surface to form Au-NaYF4:Eu 3+ -Au three-layer film structure with "memory characteristics", finally, Au-NaYF4:Eu 3+ -Au film surface is written in bright and dark controllable light-emitting array, by changing the power of excitation light to collect the fluorescence imaging of each point in the array, the bright and dark state of each point in the array is obtained and corresponds to digital information, so as to realize data reading.The method is simple and easy to operate, easy to quantify, has good application prospect in secret communication, anti-fake and measurement and control technology, and provides a new idea for data security transmission.

An optical recording medium capable of suppressing a decrease in reproduction durability is provided. [Solution] In an optical recording medium, a first disc (10) includes at least one information signal layer (L0-Ln). The information signal layer includes a first dielectric layer (14), a recording layer (13), and a second dielectric layer (15), in that order, with the first dielectric layer being located deeper than the recording layer when viewed from a first light irradiation surface (C1). The recording layer includes Mn and O. The first dielectric layer includes Zn, Sn, Al, and O or Zn, Sn, Ti, and O, with the Al content relative to the total amount of Zn, Sn, and Al being 10 atomic % or more, and the Ti content relative to the total amount of Zn, Sn, and Ti being 10 atomic % or more.

The present invention relates to a holographic recording medium, a method for producing the same, and an optical element including the same. The holographic recording medium has a specific element composition ratio, and thus has excellent optical recording properties, excellent durability against heat and moisture, suitable adhesive strength to a transparent adhesive, and high transparency.

The present application relates to a holographic recording medium, a manufacturing method thereof, and an optical element including the same. The holographic recording medium is capable of recording full-color optical information, has excellent diffraction efficiency in red, green, and blue regions, and is stable at room temperature and high temperatures, and exhibits excellent reliability even when left at room temperature for a long period of time or exposed to high temperatures.

The disclosure relates to a benzopyrylium dye of the formula (I),in which R200, R201, R202, R203, R204, R205, R206, R207 and R208 independently of one another are each hydrogen, C1 to C16 alkyl, C4 to C7 cycloalkyl, C7 to C16 aralkyl, C6 to C10 (het)aryl, hydroxyl, C1 to C6 alkoxy, or dialkylamino, the dialkylamino being selected from the group consisting of diethylamino, dimethylamino, diisopropylamino, a six-membered saturated ring attached via the N of the amino group, which may additionally contain an N or O and may be substituted by nonionic arbitrary radicals, or a combination of at least two thereof, and / or R200 with R201 or R201 with R202 or R202 with R203 and / or R205 with R206 and / or R206 with R207 each independently of one another form a —CH═CH—CH═CH— bridge, and A is a —CH2— or a —CH2—CH2— bridge, where the anion Ann− has a molecular weight of ≥200 g / mol and does not contain a halogen atom.

A data protector according to an embodiment of the present disclosure includes: a data layer configured to record confidential information as a visible image; and one or a plurality of cover layers disposed at least one of above or below the data layer and configured to transition between a color-developed state and a decolored state in a visible wavelength region.

The invention belongs to the technical field of functional materials, and discloses a method for physically regulating and controlling the afterglow time of a room-temperature phosphorescent material through optical excitation and application of the method in dynamic information display. By using the method, the afterglow emitting RGB three primary colors and the afterglow with red and green time resolution are prepared respectively. The material is quick and energy-saving to prepare and stable in performance, multiple dynamic information encryption can be realized by controlling the wavelength and irradiation time of ultraviolet light, and the material has a wide application prospect in the fields of intelligent anti-counterfeiting and information storage.

The present invention relates to a method for producing a substrate coated with a photopolymer film, wherein the photopolymer film is suitable in a partial region of its total surface to form a holographic optical element (HOE). The product of the process can be used in laminated glass for building glazing or in vehicle windows.

The invention discloses a photoinduced fluorescence enhanced vinyl ether compound as well as a preparation method and application thereof. The vinyl ether compound comprises a sulfuryl vinyl ether compound, a carbon-based vinyl ether compound and an ester-based vinyl ether compound, the vinyl ether compound is subjected to photochemical rearrangement under the irradiation of 254 nm ultraviolet light to generate a planar fused ring structure, and the fluorescence intensity is greatly improved. Through substituent group regulation and control, accurate adjustment of emission wavelength can be realized. The synthesis method is based on click reaction of phenolic monomers and activated alkyne, and the process is simple and efficient. The molecules still keep photoresponsiveness in a solid film (such as a PMMA substrate), are successfully applied to a mask-assisted information input and erasing system, and provide a new technical scheme for the fields of anti-counterfeiting and information storage.

The present disclosure relates to a novel holographic photopolymer and method for making the same. In some embodiments, the holographic photopolymer may comprise a polyurethane matrix, a writing monomer, and a dye system. In some embodiments, the writing monomer may comprise a polycyclic heteroaryl writing monomer In some embodiments, the holographic photopolymer may comprise a anti-oxygen inhibitor. In some embodiments, an augmented reality / virtual reality (AR / VR) apparatus comprising the holographic photopolymer is described.

Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and / or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices. Such devices exhibit a number of desirable properties, including providing wearers with favorable optical quality.

The present invention relates to a fluorinated compound, a photopolymerizable composition, a hologram recording medium, a preparation method thereof, and an optical element comprising the same. The fluorinated compound is included in a photopolymerizable composition, thereby being able to provide a hologram recording medium that not only has excellent optical recording properties but also exhibits transparent optical properties and excellent reliability even in high temperature and high humidity environments, and an optical element including the same.

This invention relates to the field of holographic storage materials technology, specifically to an NVP-doped PQ / PMMA photopolymer holographic storage material and its preparation method. The NVP-doped PQ / PMMA photopolymer holographic storage material uses NVP, MMA, PQ, and AIBN as raw materials. NVP is doped into PQ / PMMA to achieve the photopolymer material as an excellent medium for holographic storage. This material has a simple preparation process, low cost, high diffraction efficiency, and high photosensitivity, making it better suited for holographic imaging and data storage compared to PQ / PMMA.

The recording medium according to one embodiment of the present disclosure is provided with a recording layer. The recording layer includes: an aliphatic polymer; and a multiphoton absorption compound that has a multiphoton absorption property and that includes at least one selected from the group consisting of a carbon-carbon double bond, a carbon-nitrogen double bond, and a carbon-carbon triple bond. When the thickness of the recording layer is 100 μm, the transmittance of the recording layer in the thickness direction for light having a wavelength of 405 nm is 80% or more.

The subject of the present invention is a method for controlling the spatial arrangement of domains of mesogenic compounds, exhibiting the ability to synchronise chirality by controlled synchronisation of conformational chirality, characterised in that an area of a thin film of a compound forming a conglomerate of domains is heated above the isotropisation temperature of a given compound until a specific chirality is obtained in a given area, and the shape of the heated area corresponds to a selected pattern enabling the control of the crystallisation front, wherein the heating is carried out by means of area illumination with laser light of a wavelength corresponding to the high absorbance of the melted compound and / or area heating of a substrate on which the thin film of the compound is placed and / or by area illumination with laser light of a wavelength corresponding to the high absorbance of a dye added to the film.

The present disclosure relates to a hologram recording medium, a preparation method thereof, and an optical element comprising the same. The hologram recording medium is capable of recording full-color optical information, has excellent diffraction efficiency in the red, green, and blue regions, and has excellent stability at room temperature and high temperature, so that it can exhibit excellent reliability even when left at room temperature for a long time or exposed to high temperature.

The present invention relates to a fluorinated compound, a photopolymerizable composition, a hologram recording medium, a preparation method thereof, and an optical element comprising the same. The fluorinated compound is included in a photopolymerizable composition, thereby being able to provide a hologram recording medium that not only has excellent optical recording properties but also exhibits transparent optical properties and excellent reliability even in high temperature and high humidity environments, and an optical element including the same.

A drawing apparatus that includes a light source section and a scanning section. The scanning section irradiates a surface of the recording medium with a plurality of laser beams. The light source section generates at least one laser beam among the plurality of laser beams to cause a beam shape of each of the laser beams at a position of the recording medium to satisfy a relational expression below, and to cause a length of the beam shape in a direction parallel to a scanning direction of the laser beams to be 0 degrees or more and 20 degrees or less with respect to the scanning direction of the laser beams:L⁢y×1.1≤L⁢x<L⁢y×5.d×0.8≤L⁢y≤d×1.3Lx: Length of the beam shape in a direction parallel to the scanning direction of the laser beamsLy: Length of the beam shape in a direction orthogonal to the scanning direction of the laser beamsd: Pixel size.

This application relates to a composition for a holographic recording medium and a holographic recording medium using the composition for a holographic recording medium. In this application, a substrate film-forming substance contained in the composition for a holographic recording medium is structurally designed, and a refractive index of a substrate is reduced to enhance an overall refractive index difference, so that a high-performance VHG is prepared.

The invention relates to a novel holographic photopolymer and a manufacturing method thereof. In some embodiments, a holographic photopolymer may include a polyurethane matrix, a write monomer, and a dye system. In some embodiments, the write monomer may include a polycyclic heteroaryl write monomer. In some embodiments, the holographic photopolymer may include an antioxidant inhibitor. In some embodiments, an augmented reality / virtual reality (AR / VR) device comprising a holographic photopolymer is described.

A data protector according to an embodiment of the present disclosure includes: a data layer configured to record confidential information as a visible image; and one or a plurality of cover layers disposed at least one of above or below the data layer and configured to transition between a color-developed state and a decolored state in a visible wavelength region.

The disclosed technology generally relates to storing data, and more particularly relates to a method of storing data in a polymer, where the data comprises a sequence of bits. In one aspect, the method comprises receiving a sequence of bits to be stored and providing a group of different homo-bifunctional monomers. Each homo-bifunctional monomer comprises a core structure having identical functional groups attached at two different positions of the core structure. The group of different homo-bifunctional monomers comprises homo-bifunctional monomers having at least two different core structures. The method further comprises linking the different homo-bifunctional monomers together to form the polymer having a sequence of monomer core structures representing the sequence of bits to be stored. The different homo-bifunctional monomers are linked together using a click chemistry reaction between the functional groups of the different homo-bifunctional monomers. The present disclosure further relates to a synthesis system for performing the method.

Provided is a composition suitable for forming a cured film having high solvent resistance and a high refractive index. The composition comprises a polymerizable compound (A) and a polymerizable compound (B), wherein the content of the polymerizable compound (B) with respect to 100 parts by mass of the polymerizable compound (A) is 0.0001 parts by mass to 10 parts by mass. The polymerizable compound (A) has a structure represented by formula (1) and has a refractive index of 1.60 or more. The polymerizable compound (B) is represented by formula (2). (In formula (1), R1 is a hydrogen atom or a methyl group. L1 is a (n1+1)-valent linking group. n1 is 1 or 2. In formula (2), R2 is a hydrogen atom or a methyl group. L2 is a (n2+1)-valent linking group. n2 is 1 or 2.)

A holographic photopolymer material, a holographic photosensitive film, a holographic optical element, and a display device are provided. The holographic photopolymer material includes a polymer matrix, photopolymerizable monomers, and a photosensitizer. An index of refraction of the photopolymerizable monomer is greater than an index of refraction of the polymer matrix. A molecular structure of the polymer matrix includes a linear structure, and branch chains of the polymer matrix include activation groups; and / or the molecular structure of the polymer matrix includes a crosslinked structure. The polymer matrix whose molecular structure is the crosslinked structure has a high glass transition temperature, so that the holographic photopolymer material has good heat resistance. The holographic photopolymer material whose molecular structure is a linear structure includes the activation groups that may form a crosslinked structure, so that an optical element made from the holographic photopolymer material can have a crosslinked structure, that is, the optical element can have good heat resistance. The holographic photopolymer material has good heat resistance, or the optical element made from the holographic photopolymer material can have good heat resistance.

An optical information storage medium includes a substrate and a multilayer polymeric film. The multilayer polymeric film has a first surface and an opposite second surface that extend the length of the multilayer polymeric film. The second surface is adhered to a surface of the substrate. The multilayer polymeric film includes a plurality of coextruded alternating polymeric active data storage layers and polymeric buffer layers.