58results about "Hologram recording material" 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.

The invention relates to a method for actively optimizing a playback configuration of a virtual retinal display (16a-d) comprising a light projector (10a-d) and a holographic combiner (12a-d) with at least one holographic-optical element (14a-d). It is proposed that in at least one process step (52a-d) of the process, one or more beam parameters of a light signal (18a-d) emitted by the light projector (10a-d) and / or one or more holographic reconstruction parameters of the holographic combiner (12a-d), in particular during operation of the virtual retinal display (16a-d), are actively modified with the aim of optimizing a hologram efficiency of the holographic-optical element (14a-d), in particular optimizing a hologram-side angular and / or wavelength bandwidth with which a hologram target efficiency can be achieved.

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 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 compound represented by the following formula (1). [In the formula, n represents an integer of 1 to 3. L1 represents an optionally branched (n+1)-valent linking group, excluding linear saturated aliphatic hydrocarbon groups. X represents an oxygen atom or a nitrogen atom optionally having a substituent. R1-1 represents an aromatic ring group optionally having a substituent. m represents an integer of 3 to 5, and a plurality of R1-1 may be the same or different from each other. In the formula, the total number of carbon atoms constituting a plurality of R1-1s represented by -(R1-1)m is 25 to 70. The benzene ring having R1-1 in the formula may further have a substituent other than R1-1. R2 represents a hydrogen atom or a methyl group.]

The present disclosure provides a volume hologram laminate comprising a substrate, and a volume hologram laminate portion placed on one surface of the substrate, wherein the volume hologram laminate portion includes, from a substrate side, a resin layer including transparent resin; an inhibiting layer placed in a pattern form, in contact with the resin layer; and a volume hologram layer, on which an interference fringe is recorded, placed in contact with the resin layer and the inhibiting layer, in this order, and an inhibiting layer-formed region including the inhibiting layer and an inhibiting layer-non-formed region including no inhibiting layer differ in a color of a reproduction image from the volume hologram layer.

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.

A method for manufacturing a diffractive optical element comprising the following steps is provided: - providing a master (3) of the diffractive optical element, wherein a layer of a recordation material (11) covers the master (3), - radiating the master (3) with electromagnetic radiation of a reference beam (2), such that an object beam (17) is generated, and - recording an interference pattern (16) of the electromagnetic radiation of the reference beam (2) and an electromagnetic radiation of the object beam (17) by the recordation material (16). Further, an apparatus for manufacturing a diffractive optical element is provided.

The present disclosure relates to a hologram recording medium and an optical element comprising the same. The hologram recording medium not only has excellent optical recording properties but also can exhibit excellent reliability and high transparency even under high temperature conditions.

An optical master is created by using a nanoimprint alignment layer to pattern a liquid crystal (LC) layer. The nanoimprint alignment layer and the LC layer constitute the optical master. The optical master is positioned above a photoalignment layer. The optical master is illuminated and light propagating through the nanoimprinted alignment layer and the LC layer is diffracted and subsequently strikes the photo-alignment layer. The incident diffracted light causes the pattern in the LC layer to be transferred to the photo-alignment layer. A second LC layer is deposited onto the patterned photo-alignment layer, which subsequently is used to align the molecules of the second LC layer. The second LC layer in the patterned photo-alignment layer may be utilized as a replica optical master or as a diffractive optical element for directing light in optical devices such as augmented reality display devices.

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.

A laminated pane includes first and second panes, a layer stack arranged therebetween including a first thermoplastic intermediate layer, a separating layer, a photopolymer layer with at least one holographic element, a carrier layer, and a second thermoplastic intermediate layer, wherein the photopolymer layer has a thickness of 5 μm to 50 μm, the carrier layer contains polyethylene terephthalate (PET), polyethylene (PE), polymethyl methacrylate (PMMA), polycarbonate (PC), polyamide (PA), polyvinyl chloride (PVC), and / or cellulose triacetate (TAC) and has a thickness of 20 μm to 100 μm, wherein the carrier layer is arranged directly adjacent the photopolymer layer, and the separating layer contains polyethylene (PE), polyvinyl chloride (PVC), and / or polymethyl methacrylate (PMMA) and has a thickness of 10 μm to 300 μm.

One embodiment provides an apparatus for displaying an image comprising: a first optical substrate comprising at least one waveguide layer configured to propagate light in a first direction, wherein the at least one waveguide layer of the first optical substrate comprises at least one grating lamina configured to extract the light from the first substrate along the first direction; and a second optical substrate comprising at least one waveguide layer configured to propagate the light in a second direction, wherein the at least one waveguide layer of the second optical substrate comprises at least one grating lamina configured to extract light from the second substrate along the second direction; wherein the at least one grating lamina of at least one of the first and second optical substrates comprises an SBG in a passive mode.

A compound represented by the following formula (1).[In the formula, n represents an integer of 1 to 3. L1 represents an optionally branched (n+1)-valent linking group, excluding linear saturated aliphatic hydrocarbon groups. X represents an oxygen atom or a nitrogen atom optionally having a substituent. R1-1 represents an aromatic ring group optionally having a substituent. m represents an integer of 3 to 5, and a plurality of R1-1 may be the same or different from each other. In the formula, the total number of carbon atoms constituting a plurality of R1-1s represented by —(R1-1)m is 25 to 70. The benzene ring having R1-1 in the formula may further have a substituent other than R1-1. R2 represents a hydrogen atom or a methyl group.]

A holographic imaging system for capturing and displaying a high-resolution and polychromatic hologram, the holographic imaging system comprising: a plurality of monochromatic coherent light sources, configured to generate a plurality of monochromatic light input wavelengths; a polarization preserving diffuser configured to receive the plurality of monochromatic light input wavelengths at a first end of the polarization preserving diffuser, and further configured to provide a polychromatic output at a second end of the fiber; and a diffractive optical element configured to receive polychromatic light from the second end of the fiber.

The present application relates to a photopolymer composition, a holographic recording medium, a method for producing the same, and an optical element containing the same. The photopolymer composition can provide a holographic recording medium and an optical element containing the same that not only have excellent optical recording properties but also exhibit excellent reliability and transparency even in high-temperature environments.

In some implementations, an optical master is created by using a nanoimprint alignment layer to pattern a liquid crystal layer. The nanoimprint alignment layer and the liquid crystal layer constitute the optical master. The optical master is positioned above a photo-alignment layer. The optical master is illuminated and light propagating through the nanoimprinted alignment layer and the liquid crystal layer is diffracted and subsequently strikes the photo-alignment layer. The incident diffracted light causes the pattern in the liquid crystal layer to be transferred to the photo-alignment layer. A second liquid crystal layer is deposited onto the patterned photo-alignment layer, which subsequently is used to align the molecules of the second liquid crystal layer. In some implementations, the second liquid crystal layer in the patterned photo-alignment layer may be utilized as a replica optical master or as a diffractive optical element, such as for directing light in optical devices such as display devices, including augmented reality display devices.

An embodiment of the present invention provides a method for manufacturing a holographic optical element including a holographic grating, comprising the steps of: (a) applying a photosensitive resin to one side of a substrate to form a photosensitive substrate; and (b) irradiating laser light onto each of the one side and the other side of the photosensitive substrate to record a holographic grating, wherein the step (a) applies the photosensitive resin so that the height of the applied layer of the photosensitive resin varies along a predetermined direction.

A compound of formula (1):wherein, A1 and A2 are a polymerizable group; n1 and n2 are an integer of 1 to 3; L1 is a single bond or an optionally branched (n1+1)-valent linking group; L2 is a single bond or an optionally branched (n2+1)-valent linking group; X is a single bond, a divalent organic group having 1 to 20 carbons, a sulfonyl group, or a divalent oxygen atom or sulfur atom; R1 and R2 are a fused aromatic ring group optionally having a substituent; and m1 and m2 are an integer of 2 to 4.

A device for continuously replicating a hologram has a coating module to coat a liquid photopolymer onto a first carrier film, a lamination module to apply a second carrier film to the first carrier film coated with the photopolymer to obtain a photopolymer composite including a liquid photopolymer layer between two carrier films, an exposure module having a light source, and a master element with a master hologram to be replicated, and a fixing module to cure the replicated hologram in the photopolymer composite. The master element is axially rotatably mounted, and the exposure module is designed to bring the photopolymer composite in optical contact with the master element, while the light source exposes the master hologram to obtain a replicated hologram in a region of the photopolymer composite.

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.

The application discloses a kind of object light beam imaging systems and preparation method thereof, object light beam imaging system includes image source, optical path modulation device and holographic plate, setting optical path modulation device includes sequentially located on the first lens group, second lens group and holographic optical element of object light beam propagation path of image source emission;By setting the common focal plane of first lens group and second lens group and setting the center of second lens group deviates the central axis of first lens group, play the role of converging object light beam, further set holographic optical element includes photopolymer layer, for converging object light beam in a point pixel, utilize holographic plate to carry the point pixel of holographic optical element convergence, secondary imaging to holographic plate, using the imaging mode of two lens groups and holographic optical element combination, continuous hologram can be obtained in observation field of view, improve the energy utilization of holographic imaging mode, improve hologram observation field of view angle and improve the display effect of holographic imaging.

A method for continuously replicating a hologram by a device having a coating module, a lamination module, an exposure module and a fixing module involves coating a first carrier film with a liquid photopolymer using the coating module, applying a second carrier film to the coated first carrier film using the lamination module to obtain a photopolymer composite including a liquid photopolymer layer between two carrier films, bringing a region of the photopolymer composite in contact with an axially rotatable master element including a master hologram to be replicated in the exposure module, and exposing the region of the photopolymer composite to a light source, such that the master hologram is replicated on the photopolymer composite, and curing a replica hologram contained in the liquid photopolymer in the fixing module.

The present invention relates to a photopolymer composition comprising a) a matrix polymer, b) a write monomer, c) at least one photoinitiator system, d) optionally at least one non-photopolymerizable component, and e) optionally catalysts, radical stabilizers, solvents, additives and other auxiliary and / or additional materials, wherein the at least one photoinitiator system c) consists of at least one colorant and at least one coinitiator, at least one of the colorants having a structure according to Formula (I). [Formula 1] TIFF2025507602000048.tif40150

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 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 polyurethane matrix may comprise a mesh size and a storage modulus. In some embodiments, the polyurethane matrix may comprise a liquid additive. In some embodiments, the storage modulus of the polyurethane matrix increases from about 10² Pa to about 5x10⁵ Pa as the mesh size decreases. In some embodiments, an augmented reality / virtual reality (AR / VR) apparatus comprising the holographic photopolymer is described.

An optical master is created by using a nanoimprint alignment layer to pattern a liquid crystal layer. The nanoimprint alignment layer and the liquid crystal layer constitute the optical master. The optical master is positioned above a photo-alignment layer. The optical master is illuminated and light propagating through the nanoimprinted alignment layer and the liquid crystal layer is diffracted and subsequently strikes the photo-alignment layer. The incident diffracted light causes the pattern in the liquid crystal layer to be transferred to the photo-alignment layer. A second liquid crystal layer is deposited onto the patterned photo-alignment layer, which subsequently is used to align the molecules of the second liquid crystal layer. The second liquid crystal layer in the patterned photo-alignment layer may be utilized as a replica optical master or as a diffractive optical element for directing light in optical devices such as augmented reality display devices.

The invention relates to a method for replicating a multi-color hologram stack, comprising the steps of: providing a first master hologram configured for a first wavelength range and a second master hologram configured for a second wavelength range; providing a replica stack having a first photosensitive layer on the replica substrate; exposing the first master hologram with light of a first wavelength range to obtain a first replicated hologram in the first photosensitive layer; fixing the first replicated hologram in the first photosensitive layer; applying a second photosensitive layer on the first photosensitive layer; exposing the second master hologram with light of a second wavelength range to obtain a second replicated hologram in the second photosensitive layer; a second replicated hologram is fixed in the second photosensitive layer. The invention also relates to a replica stack comprising at least a first replica hologram and a second replica hologram, wherein the replica stack can be produced by the method according to the invention.