|| List of recent Holographic-related patents
|Method for producing a holographic film|
The invention relates to a method for producing holographic films, in which a photopolymer formulation is provided which comprises as constituents matrix polymers, writing monomers, a photoinitiator system, optionally a non-photopolymerizable component and optionally catalysts, radical stabilizers, solvents, additives and other auxiliaries and/or additives. The photopolymer formulation is applied in a planar manner and in the form of a film on a support film and the photopolymer formulation is dried on the support film at a temperature 60<t<120 deg c., wherein only compounds are selected as components for the photopolymer formulation, the tga 95 values of which are >100 deg c.
|Method for producing holographic media|
The invention relates to a method for producing holographic media, wherein a photopolymer formulation comprising matrix polymers, writing monomers, a photoinitiator system, and optionally auxiliary materials and additives as components is provided, the photopolymer formulation is applied as a coating on the surface of a carrier film and the photopolymer formulation is dried on the carrier film at a temperature xx<t>yy deg c., wherein only those compounds having tga 95 values >100 deg c. And at least 30 deg c.
|Full-parallax acousto-optic/electro-optic holographic video display|
A full-parallax acousto-optic/electro-optic holographic video display includes a control layer and a piezo-electric layer, which includes a substrate and an array of anisotropic waveguide elements. Each waveguide element guides light into a single polarization and includes a horizontal grating, which diffracts light horizontally and comprises surface acoustic waves, and vertical grating, which diffracts light vertically and includes an electro-optic phased array.
|Anisotropic leaky-mode modulator for holographic video displays|
An anisotropic spatial acousto-optic modulator for a holographic display system includes a substrate, an anisotropic waveguide that guides light into a single polarization, and a transducer that generates surface acoustic waves that propagate linearly with the guided, polarized light, converting at least some of the polarized light into a leaky mode of orthogonally polarized light. The acoustic waves may be encoded with holographic information.
|Holographic medium having a protective layer|
This invention relates to a holographic medium comprising a protective layer and a photopolymer film which is bonded to the protective layer and contains polyurethane matrix polymers, acrylate writing monomers and photoinitiators, wherein the protective layer is impermeable to the constituents of the photopolymer film, is optically clear and is transparent to electromagnetic radiation having a wavelength in the range of from 350 to 800 nm. The invention further provides the use of a holographic medium according to the invention in the production of holograms, and a process for the production of a holographic medium according to the invention..
|Chain transfer reagents in polyurethane-based photopolymer formulations|
The present invention relates to photopolymer formulations comprising: matrix polymers (a), obtainable by reacting at least one polyisocyanate component (a) and one isocyanate-reactive component (b); a writing monomer (b); a photoinitiator (c); a catalyst (d); and a chain transfer reagent (e). A holographic medium that contains a photopolymer formulation according to the invention or can be obtained by using it, the use of a photopolymer formulation according to the invention for manufacturing holographic media, and a method for producing a holographic medium by using a photopolymer formulation according to the invention are also subject matter of the invention..
|Grey-scale holographic structure and system for generating a millimeter-wave collimated wavefront in a compact range|
Embodiments of a grey-scale holographic structure and system for generating a collimated wavefront in a compact range are generally described herein. In some embodiments, the grey-scale holographic structure comprising millimeter-wave transmissive material having a surface arranged to provide differing amounts of phase-delay to an incident millimeter-wave wavefront as the incident wavefront passes through the material.
|Holographic image display device and method for driving the same|
Disclosed are a holographic image display device and a method for driving the same which may stabilize luminance of a holographic image and reduce flicker. The holographic image display device includes a laser backlight unit, a surface light converter converting laser light emitted from the laser backlight unit into surface light-type laser light and emitting the surface light-type laser light, a spatial light modulator (slm) implementing an input holographic interference pattern and projecting a holographic image at a viewing point using the surface light-type laser light, and an optical switching unit located between the laser backlight unit and the slm and controlling polarization of the laser light.
|Course integral holographic display|
A holographic display system for generating a super hologram with full parallax in different fields of view in the horizontal and vertical directions. The system includes an array of holographic display devices, e.g., spatial light modulators (slms), operable to provide a plurality of holographic images of a scene from differing viewpoints of the scene.
|Cooperative 3d work station|
A display apparatus for depicting a three-dimensional scenario includes a first and a second projection device, and a holographic display device having a first and a second holographic unit. A depiction apparatus includes a number of the display apparatuses for the depiction and cooperative processing of a three-dimensional scenario by a number of users that each observe the three-dimensional scenario from an individually determinable perspective..
|Method and apparatus for holographic recording|
Provided is a holographic recording method in which an interference fringe between a reference beam and a signal beam, modulated according to information regarding a plurality of hologram pixels, is recorded on a holographic recording medium, the holographic recording method including multiplexing-recording the interference fringe of the plurality of hologram pixels such that at least a part of the interference fringe recorded of neighboring hologram pixels of the plurality of hologram pixels is overlapped.. .
|Holographic 3d image display apparatus and illumination unit for the same|
An illumination unit is provided including a coherent light source; a projection optical element which focuses a light beam emitted from the coherent light source onto a focal plane; and a holographic optical element interposed between the coherent light source and the projection optical element, and having an interference pattern formed thereon. The holographic optical element diffracts the light beam emitted from the coherent light source and emits the diffracted light to the projection optical element.
|Holographic user interfaces for medical procedures|
An interactive holographic display system includes a holographic generation module configured to display a holographically rendered anatomical image. A localization system is configured to define a monitored space on or around the holographically rendered anatomical image.
|Image recovery from single shot digital hologram|
Techniques described herein are generally related to high resolution image recovery of objects from digital holograms. The various described techniques may be applied to methods, systems, devices or combinations thereof.
|Spatial light modulator, holographic three-dimensional image display including the same, and method for modulating spatial light|
A spatial light modulator, a holographic image display including the same, and a method for spatially modulating light. The spatial light modulator modulates a phase of light that is incident on a plurality of pixels and includes a variable refractive index layer that has a refractive index which is variable based on one of an optical signal and an electrical signal, and a metal layer that is disposed on the refractive index-change layer, and a high refractive index layer on the metal layer.
|Non-mechanical digital/holographic wide angle control of one or more lasers beams.|
An apparatus including a laser generating a plane wave beam, a first beam splitter splitting the plane wave beam into a first reference laser beam and at least one ideal input beam, at least one second beam splitter, and an angle-magnifying optical element. The at least one second beam splitter reflects the at least one ideal input beam through the angle-magnifying optical element to generate at least one distorted input beam.
|User interaction with a holographic poster via a secondary mobile device|
The invention provides a holographic display device that registers an individual through their mobile device to allow that individual user to control and interact with a holographic display presented by the device. The holographic display device is operable to receive from a mobile device information identifying a user of the mobile device.
|Apparatus and method for holographic poster display|
The invention generally relates to holographic posters and computer controlled systems for communicating information. The invention provides a computer-based holographic poster device that displays holographic images and videos for interacting with interested users via, for example, their motions and gestures or their personal devices such as smartphones.
|Sulphur-containing chain transfer reagents in polyurethane-based photopolymer formulations|
The present invention relates to photopolymer formulations comprising: matrix polymers (a), obtainable by reacting at least one polyisocyanate component (a) and one isocyanate-reactive component (b); a writing monomer (b); a photoinitiator (c) a catalyst (d); and a sulphur-containing chain transfer reagent (e). A holographic medium that contains a photopolymer formulation according to the invention or can be obtained by using it, the use of a photopolymer formulation according to the invention for manufacturing holographic media, and a method for producing a holographic medium by using a photopolymer formulation according to the invention are also subject matter of the invention..
|Light shaping for imaging using holography|
A plurality of light sources of different wavelength bands can be provided. An imaging device can be configured to modulate incoming light according to video image data and output modulated light.
|Sensor-monitored, 3d, interactive holographic freespace control unit (hfcu) and associated components|
A sensor/camera-monitored, virtual image or holographic-type display device is provided and called a sensor-monitored, 3d, interactive holographic freespace control unit (hfcu). This invention allows user interactions with the virtual-images or holograms without contacting any physical surface; it is achieved via the use of a visually bounded freespace both with and without holographic-type assistance.
|High-power, phase-locked, laser arrays|
High-power, phased-locked, laser arrays as disclosed herein utilize a system of optical elements that may be external to the laser oscillator array. Such an external optical system may achieve mutually coherent operation of all the emitters in a laser array, and coherent combination of the output of all the lasers in the array into a single beam.
|Annulus scattering diffuser for display with reflective surface|
This disclosure provides systems, methods and apparatus for enhancing the brightness and/or contrast ratio of display devices. In one aspect, the display devices can include an annular diffuser that is configured to scatter light into a ring shaped region.
|Digital hologram recording system and numerical reconstruction method for hologram|
The present invention provides a digital hologram recording system and a numerical reconstruction method for a hologram, which are used for capturing an image of an object and recording it as a holographic data. Said system comprises: signal light, formed after irradiating the object with a light source; an image detector, for recording interference fringes of the signal light; and a light pipe, arranged in a path of the signal light and located between the object and the image detector, wherein the light pipe has a reflection surface, and a part of the signal light enters the image detector after reflected by the reflection surface of the light pipe.
|Holographic exposing and capturing screens|
This invention offers the construction of the holographic screen exposing and capturing three-dimensional video images. Exposing holographic screen is the construction comprising two screens placed on the certain distance from each another.
|Solar concentration system using volume holograms|
An electromagnetic wave concentrating system, comprising a photovoltaic material and at least one holographic concentrator. The holographic concentrator includes at least two stacked holographic optical elements (hoe).
|Optical head-mounted display with mechanical one-dimensional scanner|
An optical head-mounted display includes an eyeglass frame, a holographic optical element supported by the eyeglass frame to be confronted by an eye of a wearer, and a projector mounted on the eyeglass frame to project image information on the holographic optical element. The projector includes a led light source, a beam-splitting polarizer, a spatial light modulator, a lens set and a mechanical one-dimensional scanner.
|Container seal with removal tab and security ring seal|
A holographic sealing member for a container comprises a heat actuated sealant or adhesive layer that secures the sealing member to a container, a metal foil sealing layer over and covering and adhesively bonded to the heat actuated sealant or adhesive layer, a holographic layer over and covering and adhesively bonding to the metal foil layer having an upper plastic layer and a lower embossed image layer, and a tab over and covering and adhesively bonded to the upper plastic layer that may be pulled to remove the tab and the plastic layer from a container, thereby exposing the lower embossed image layer which must then be perforated to gain access to the contents of the container.. .
|Digital holographic microscopy apparatus and method for clinical diagnostic hematology|
An apparatus, method, and apparatus for hematology analysis comprising using a holographic microscope, in one embodiment a transmission-type holographic microscope. In one aspect, laser light is provided and split into first and second sample beams, the first sample beam for imaging with a first magnification, the second sample beam for imaging with a second magnification.
A substrate includes a diffracting structure providing a hologram (20, 6). The diffracting structure encodes a holographic image so that thatholographic image is produced in response to reference light being incident on a major surface of the substrate at an angle of incidence with respect to the said major surface of the substrate, wherein the angle of incidence is no more than 20°..
|Holographic storage medium and method of making holographic storage medium|
Articles for recording a holographic image are described. The articles include a holographic recording medium having a plurality of surfaces, having a transparent polymeric binder and a photochemically active dye, the holographic recording medium having a holographic image recorded therein formed by exposed areas of the photochemically active dye and unexposed areas of the photochemically active dye; and a first light-blocking layer or material over a first surface of the holographic recording medium from which surface the holographic image is viewed, the light blocking layer or material absorbing light in the wavelength range to which the photochemically active dye is sensitive and allowing transmission of light in a different wavelength range for viewing the holographic image..