127results about "Hologram recording material" patented technology

The present invention relates to photopolymerizable compositions and elements made therefrom, as well as their use. The photopolymerizable compositions are particularly suitable as recording material for optical elements with refractive index modulation, in particular holograms.

To allow systems for manufacturing waveguide cells in accordance with various embodiments to be configured and implemented in many different ways.SOLUTION: In many embodiments, various deposition mechanisms are used to deposit a layer(s) of an optical recording material(s) onto a transparent substrate. A second transparent substrate can be provided, and the three layers can be laminated to form a waveguide cell. A suitable optical recording material can vary widely depending on a given application. In some embodiments, the optical recording material deposited has a similar composition throughout a layer. In a number of embodiments, the optical recording material spatially varies in composition, enabling formation of optical elements with varying characteristics. Regardless of the composition of the optical recording material, any method of placing or depositing the optical recording material onto a substrate can be utilized.SELECTED DRAWING: Figure 11

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.

Mastering systems and methods of fabricating waveguides and waveguide devices using such mastering systems are described. Mastering systems for fabricating holographic waveguides can include using a master to control the application of energy (e.g. a laser, light, or magnetic beam) onto a liquid crystal substrate to fabricate a holographic waveguide into the liquid crystal substrate. Mastering systems for fabricating holographic waveguides in accordance with embodiments of the invention can include a variety of features. These features include, but are not limited to: chirp for single input beam copy (near i.e. hybrid contact copy), dual chirped gratings (for input and output), zero order grating for transmittance control, alignment reference gratings, 3: 1 construction, position adjustment tooling to enable rapid alignment, optimization of lens and window thickness for multiple RKVs simultaneously, and avoidance of other orders and crossover of the diffraction beam.

To provide a photosensitive composition capable of further improving diffraction characteristics.The present technology provides a photosensitive composition including: at least a compound represented by the following general formula (1); a binder resin; and a photoinitiator.In the general formula (1), X1 represents an oxygen atom, a nitrogen atom, a phosphorus atom, a caron atom, or a silicon atom.Y1 and Y2 each represent a benzene ring or a naphthalene ring, and both Y1 and Y2 do not represent benzene rings.R1 to R3 each represent a hydrogen or a substituent group represented by *—Z1(R4)d (* represents a bonding site).Z1 represents a single bond, a saturated hydrocarbon group having a valence of 2 or higher, or an unsaturated hydrocarbon group having a valence of 2 or higher, and the saturated hydrocarbon group or the unsaturated hydrocarbon group may have an ether bond and / or a thioether bond.R4 represents a hydrogen or a polymerizable substituent group.

The present application relates to a method for manufacturing optical waveguides. A mastering system and methods for manufacturing waveguides and waveguide devices using such a mastering system are described. The mastering system for manufacturing holographic waveguides may include using a master to control the application of energy (e.g., laser, optical, or magnetic beams) to a liquid crystal substrate to manufacture the holographic waveguide within the liquid crystal substrate. The mastering system for manufacturing holographic waveguides according to embodiments of the present invention may include various features. These features include, but are not limited to: chirping for a single input beam replica (i.e., near hybrid contact replicas), double-chirped gratings (for input and output), a zero-order grating for transmission control, an alignment reference grating, a 3:1 configuration, a position adjustment tool to enable rapid alignment, simultaneous optimization of lens and window thicknesses for multiple RKVs, and avoidance of crossover of diffracted beams and other orders.

Mastering systems and methods of fabricating waveguides and waveguide devices using such mastering systems are described. Mastering systems for fabricating holographic waveguides can include using a master to control the application of energy (e.g. a laser, light, or magnetic beam) onto a liquid crystal substrate to fabricate a holographic waveguide into the liquid crystal substrate. Mastering systems for fabricating holographic waveguides in accordance with embodiments of the invention can include a variety of features. These features include, but are not limited to: chirp for single input beam copy (near i.e. hybrid contact copy), dual chirped gratings (for input and output), zero order grating for transmittance control, alignment reference gratings, 3:1 construction, position adjustment tooling to enable rapid alignment, optimization of lens and window thickness for multiple RKVs simultaneously, and avoidance of other orders and crossover of the diffraction beam.

A light guide plate for image display can display clear images even when a resin base is used. The Sight guide plate configured for image display may include a first resin base and a hologram layer. The first resin base may have an MC value of 0.120 or less, obtained by evaluation using shadow contrast, according to expression (1):MC=Lmax-LminLmax+Lmin,(1)wherein Lmax is a maximum value of brightness from a brightness distribution, Lmin is a minimum value of the lightness from the brightness distribution, and MC is an MC value that objectively represents a magnitude of a dip in low brightness portions in the brightness distribution.

The present disclosure relates to a holographic grating which includes a holographic photopolymer, and to an augmented reality / virtual reality apparatus including the same. The holographic grating may include at least one nanoparticle, a light portion, a dark portion, and a holographic photopolymer. The holographic photopolymer may also include a polymer matrix, a writing monomer, and a dye system. The holographic photopolymer may be dispersed throughout the light portion and the dark portion of the holographic grating. In some forms, the light portion may include a first concentration of the nanoparticles and / or the dark portion may include a second concentration of the nanoparticles. The first concentration of the nanoparticles may be greater than the second concentration of the nanoparticles.

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.

There is provided an optical film (10) including a recording surface (14) on which a plurality of unit blocks (12) are disposed at regular intervals. For these unit blocks (12), phase components of light from a reconstruction point (22) are calculated. The recording surface (14) includes a calculated element region (16) provided with an array of the unit blocks (12) for which phase components of light from the reconstruction point (22) are calculated for reproduction of an image. A first image is a monotone reconstruction image having even brightness, and a second image is a grayscale image having brightness gradation.

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.

To provide mastering systems and methods for fabricating waveguides, and waveguide devices using such mastering systems.SOLUTION: A mastering system for fabricating holographic waveguides may employ a step of using a master to control application of energy (e.g., laser, light, or magnetic beam) onto a liquid crystal substrate to fabricate a holographic waveguide into the liquid crystal substrate. Mastering systems for fabricating holographic waveguides according to embodiments of the present invention may include a variety of features.SELECTED DRAWING: Figure 5

The invention relates to a benzopyrylium dyestuff of formula (I), wherein R200,R201, R202, R203, R204, R205, R206, R207 and R208 each independently represent hydrogen, C1- to C16-alkyl, C4- to C7-cycloalkyl C7- to C16-aralkyl, C6- to C10-(het)aryl, hydroxy, C1- to C6- alkoxy, or dialkylamino , wherein the dialkylamino is selected from the group consisting of diethylamino, dimethylamino, diisopropylamino, a six-membered, saturated ring linked via the N of the amino group, which can also include an N or O and can be substituted by non-ionic random groups 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 together form a -CH=CH-CH=CH-bridge, with A representing a -CH2or a -CH2-CH2-bridge, wherein the anion Ann- has a molecular weight of ≥ 200 g / mol and contains no halogen atom.

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.

The present invention relates to a hologram recording medium and an optical clement comprising the same. The hologram recording medium not only has excellent optical recording properties but also can exhibit transparent optical properties and excellent reliability even in high temperature and high humidity environments.

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.]

Optical article (200) comprising at least: - a substrate (201), and - a holographic waveguide (202) covering at least part of the substrate (201) and comprising : - two main surfaces (203, 204), at least one of them conforming to a surface (201a) of the substrate (201), and - at least first and second zones (Z1, Z2) that are configured so that light incoming on one of the first and second zones (Z1; Z2) is at least partially guided towards the other of said first and second zones (Z2; Z1).

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 hologram recording medium, a preparation method thereof, and an optical element including the same. As the hologram recording medium satisfies a specific element ratio, it not only is excellent in optical recording characteristics, but also exhibits excellent durability against heat and moisture, and can exhibit appropriate adhesive force to transparent adhesives and high transparency.

A compound represented by formula (1). [In formula (1), A1 and A2 are polymerizable groups. And n1 and n2 are integers from 1 to 3. And L1 represents a single bond or an optionally branched (n1 + 1)-valent linking group. L2 represents a single bond or an optionally branched (n2 + 1)-valent linking group; and X represents a single bond, a divalent organic group having 1-20 carbon atoms, a sulfonyl group, or a divalent oxygen atom or sulfur atom. R1 and R2 each represents a fused aromatic ring group which may have a substituent. And m1 and m2 are integers from 2 to 4. ]

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.

Laminated pane (100), at least comprising a first pane (1), a second pane (2) and a stack of layers arranged in between, at least comprising the following layers in the order from the first pane (1) to the second pane (2): a first thermoplastic intermediate layer (3), a separating layer (5), a photopolymer layer (4) with at least one holographic element, a carrier layer (7) and a second thermoplastic intermediate layer (6), wherein - the photopolymer layer (4) has a thickness of 5 µm to 50 µm, - the carrier layer (7) 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 (7) is arranged directly adjacent to the photopolymer layer (4), and - the separating layer (5) contains polyethylene (PE), polyvinyl chloride (PVC) and / or polymethyl methacrylate (PMMA) and has a thickness of 10 µm to 300 µm.

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.

Techniques disclosed herein relate to modifying refractive index modulation in a holographic optical element, such as a holographic grating. According to certain embodiments, a holographic optical element or apodized grating includes a polymer layer comprising a first region characterized by a first refractive index and a second region characterized by a second refractive index. The holographic optical element or apodized grating includes a plurality of nanoparticles dispersed in the polymer layer. The nanoparticles have a higher concentration in either the first region or the second region. In some embodiments, the nanoparticles may be configured to increase the refractive index modulation. In some embodiments, the nanoparticles may be configured to apodize the grating by decreasing the refractive index modulation proximate to sides of the grating. The refractive index may be modulated by applying a monomer reservoir buffer layer to the polymer layer, either before or after hologram fabrication.

Embodiments herein describe a sub-micron 3D diffractive optics element and a method for forming the sub-micron 3D diffractive optics element. In a first embodiment, a method is provided for forming a sub-micron 3D diffractive optics element on a substrate without planarization. The method includes depositing a material stack to be patterned on a substrate, depositing and patterning a thick mask material on a portion of the material stack, etching the material stack down one level, trimming a side portion of the thick mask material, etching the material stack down one more level, repeating trim and etch steps above 'n' times, and stripping the thick mask material from the material stack.