47results about "Substrate with hologram" patented technology

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.

A method for storing data in a holographic medium is provided. The method comprises recording a plurality of holograms in one or more at least partially overlapping regions in a holographic medium. The data is stored in a combination of the plurality of holograms. A system for implementing the method is also provided.

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.

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.

Methods for producing a security or value document (11), - in which at least one upper layer (3) and at least one lower layer (5) are combined to form a document body (6), - in which at least one upper layer (3) forms a top side and at least one lower layer (5) forms a bottom side of the document body (6), - in which a window (12) is provided in the document body (6) in which the document body (6) is transparent to light of a wavelength between the top and bottom, or in which a window section (18) is provided in at least one upper or at least one lower layer (3, 5), - in which a security hologram (16) is positioned between the top and bottom of the document body (6) and is associated with the window (12) or window section (18), - in which at least one cutout (14) is made in at least one inner layer (4) which is arranged between at least one upper and at least one lower layer (3, 5) in the document body (6), - in which a security hologram (16) is punched out with a punching tool (26, 32) with a format which corresponds to the size of the punching out (14) of the at least one inner layer (4), - in which the die-cut format of the security hologram (16) is inserted into the die-cut (14) of at least one inner layer (4), and - in which the at least one inner layer (4) with the security hologram (16) received in the die-cut (14) is supplied to the at least one upper and / or the at least one lower layer (3, 5), and - in which the at least one inner layer (3) with the security hologram (16) inserted in the die-cut (14) and the at least one upper layer (3) and the at least one lower layer (5) are joined together and laminated together, characterized in that - that a track material with several consecutive security holograms (16) is provided, and - that a transmission hologram is incorporated as a security hologram (16) into the document body (6) with a window section (18) that allows light to pass through from the top to the bottom to form the window (12).

The present disclosure relates to an optical element intended to be worn in front of the eye of a wearer. This optical element has two main surfaces and comprises at least one holographic diffusing element having a diffusing property resulting from a spatial variation of the refractive index of said holographic diffusing element. This spatial variation of the refractive index is greater than 0.001 at at least one given wavelength over a distance of less than 30 pm. The present disclosure also includes an optical equipment comprising such an optical element and a method for recording a holographic medium onto an optical lens.

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.

Method for manufacturing a component (6) with a hologram (5), wherein during the manufacturing process of the component (6) a form matrix (1) and a tool matrix (2) having a hologram negative (4) act on the component (6) in a manufacturing tool and the hologram (5) is imprinted in a manufacturing process-integrated manner during a manufacturing step of the component by the action of the manufacturing tool on the component (6), wherein the tool die (2) is designed as an insert in the form die (1) of the manufacturing tool and where the manufacturing tool is an injection mold, thermoforming tool or RTM tool, and wherein the tool die (2) is in direct contact with a surface of the component (6) during a residence time in which a molding compound hardens to form the component, and the hologram (5) of the tool die (2) is transferred to the component (6).

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.

A method for producing a curved substrate panel with a hologram includes producing a curved substrate panel from plastic by forming, injection moulding or injection-compression molding between a first mold half, which defines a predetermined desired geometry of a substrate surface, and a second mold half removing the first mold half from the second mold half and applying a holographic master to a surface of the first mold half, or of a further mold half fixing the first mold half or further mold half on the second mold half such that an empty gap of a predetermined constant thickness remains between the holographic master and the substrate surface, and filling this gap with a hologram-receiving material; and exposing the hologram-receiving layer formed between the substrate surface and the holographic master with a coherent light for forming a hologram defined by the holographic master.

A method of producing an optoelectronic component (10, 20, 30, 40, 50, 60) comprises the following method steps. A carrier (101) is provided with a holographic medium (104) attached to atop side (102) of the carrier (101). An optoelectronic semiconductor chip (105) is arranged at a bottom side (103) of the carrier (101) and the optoelectronic semiconductor chip (105) is connected to the carrier (101) rigidly. The optoelectronic semiconductor chip (105) is designed to emit electromagnetic radiation. A hologram is generated by illuminating the holographic medium (104). The hologram is designed as an optical component for electromagnetic radiation emitted by the optoelectronic semiconductor chip (105).

A laminated pane includes an outer pane having an outer surface and an interior surface, an inner pane having an outer surface and an interior surface, a first intermediate layer, and a hologram element having at least one hologram, wherein the first intermediate layer is arranged between the outer pane and the inner pane, the hologram element is arranged between the outer pane and the first intermediate layer or between the inner pane and the first intermediate layer, and wherein a UV protection layer is arranged on the interior surface of the outer pane.

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.

A method of displaying a Computer Generated Holographic (CGH) image by a display, including setting pixel values of a Spatial Light Modulator (SLM) included in a Head Mounted Display (HMD), producing a interference based holographic image at a first location by projecting coherent light onto the SLM, and re-imaging the holographic image from the first location to form a holographic image in front of an eye of a viewer wearing the HMD. Related apparatus and methods are also described.

Exterior lighting device (30) for a motor vehicle (40), wherein the exterior lighting device (30) comprises a design cover (31) and at least one detection device (10) with an image detection device (35) and a carrier medium (12), wherein the carrier medium (12) is designed as a light guide on which an input area (16) and an output area (18) are provided, wherein - the carrier medium (12) with the coupling area (16) and the coupling area (18) is designed as a planar detection element (11) adapted to a surface shape (33) of the design aperture (31) for the design aperture (31); - the coupling area (16) is designed as a holographic element (14) with a first deflection structure (20) designed to couple light (100) falling from an environment onto the first deflection structure (20) into the carrier medium (12); - the carrier medium (12) is designed to transfer the coupled light (100) from the coupling area (16) to the coupling area (18) by means of internal reflection; - the coupling area (18) is designed as a holographic element (14) with a second deflection structure (22) designed to couple the transmitted light (100) falling on the second deflection structure (22) out of the carrier medium (12); - the image acquisition device (35) is designed to capture the light (100) coupled out from the acquisition element (11) at the coupling area (18) and to provide it as image data that correlates with the captured light (100); and - the external lighting device (30) comprises two detection devices (10) which are spatially separated from each other and arranged on two opposing edge areas of the design panel (31).

A system for displaying a holographic image of an object behind a real object surface, including a computing unit for computing data for displaying a three-dimensional image of an object, a location measurement unit for measuring a location of a surface of a real object, a display for displaying the three dimensional image of the object, wherein the computing unit is adapted to compute data to display the three-dimensional image of the object at least partly behind the surface of the real object. Related apparatus and methods are also described.

A holographic data storage medium shaped as tape is provided. The holographic data storage medium has a thickness of 60μm or less. A holographic tape cartridge for use with a holographic data storage system is also provided. A system for receiving a holographic tape cartridge comprising a holographic data storage medium is also provided. A holographic tape library is also provided.

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.

Provided is an augmented reality device. The augmented reality device includes a first projection assembly and a first display assembly. The first display assembly is disposed on a light exit side of the first projection assembly. The first projection assembly includes a first scanner, a first laser, and a first lens group. The first display assembly includes a first holographic diffraction grating and a first lens. An exposure device is also provided.

A head mounted display (HMD) system employs a holographic element in the optical path of the HMD to direct light to a user's eye. The HMD includes a micro-display, a lightguide, and a holographic element coupled to the lightguide. The holographic element is coupled to a polarization film, and together the element and film reflect and transmit light of different polarities in a specified pattern to assist the lightguide in directing light to the user's eye. For example, the hologram and polarization film can be configured to pass R-polarized light and reflect L-polarized light, thereby directing light from the waveguide along a specified path.

The invention relates to a method for producing an optical element, in particular for use in fluorescence microscopy and / or fluorescence measurement, preferably in molecular diagnostic systems, most preferably as a radiation filter and / or radiation separator, comprising the process steps of providing a transparent support element (2), in particular a glass plate, wherein the support element has opposing surfaces (2.1, 2.2) and providing a first holographically active material (3.1) on the first surface (2.1) and providing a second holographically active material (3.2) on the second surface (2.2) and performing an exposure of at least the support element (2) and the first and / or second holographically active material (3.1, 3.2) with a laser beam (4).

The invention relates to a method for actively optimizing a reproduction configuration of a virtual retinal display (16a-d) comprising a light projector (10a-d) and a holographic combiner (12a-d) having at least one holographic optical element (14a-d). According to the invention, at least one method step (52a-d) of the method involves actively modifying 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), with the aim of optimizing a hologram efficiency of the holographic optical element (14a-d), in particular optimizing a hologram-side angle and / or wavelength bandwidth enabling a hologram target efficiency to be achieved.

A method of displaying a Computer Generated Holographic (CGH) image by a display, including setting pixel values of a Spatial Light Modulator (SLM) included in a Head Mounted Display (HMD), producing a interference based holographic image at a first location by projecting coherent light onto the SLM, and re-imaging the holographic image from the first location to form a holographic image in front of an eye of a viewer wearing the HMD. Related apparatus and methods are also described.

Methods and systems for forming holographic gratings are described herein. The methods and systems may decrease the amount of haze produced during exposure of a holographic recording medium. In some embodiments, the methods and systems include a holographic recording medium; a master hologram containing a grating; and a light source and moveable deflector configured to diffract light through the master hologram into the holographic medium to form a holographic interference pattern. The moveable deflector is configured to move in a direction parallel to the extending direction of the grating. Advantageously, moving the light in this direction allows the holographic interference pattern to remain stationary while there is a spatio-temporal displacement and cancellation of unwanted intensity nonuniformities.

The invention relates to a method for producing a carrier coated with a photopolymer film, wherein the photopolymer film is suitable for forming a holographic optical element (HOE) in a sub-region of the total surface thereof. The method product can be used in a composite glass for building glazing or in vehicle windows.

A method, computer program, and computer system are provided for correcting holographic content to be displayed on a foldable mobile device. The method, computer program, and computer system may include identifying holographic content to be displayed on two display regions of a foldable mobile device. An angle between the two display regions of the foldable mobile device is calculated, and a determination is made as to whether the holographic content on each of the two display regions overlaps based on the calculated angle. The holographic content to be displayed is updated based on applying one or more geometric transformations to the holographic content corresponding to determining the holographic content overlaps, and the updated holographic content is displayed as a three-dimensional holographic image.

A display panel (1) comprising a body of optical material, the body having at least one optical image recorded therein in an encoded manner, wherein the image is selectively reconstructable and viewable (5, 6, 7) by illuminating the panel (1) using at least one light source (3a, 3b, 3c) under selected illumination conditions, wherein the image is reconstructable and viewable (5, 6, 7) such that at least one first optical property or parameter of the reconstructed image (e.g. its geometry, position in space, colour, its dynamic appearance) is selectable in value from amongst variable values of the at least one first optical property or parameter, or whose value is actively modifiable over time, as a function of or in dependence on the value of at least one second optical property or parameter of the illumination conditions of the at least one light source (e.g. its / their position(s) or spacing(s) relative to the panel (1), its / their colour, brightness / optical intensity, polarisation, direction of light ray propagation, application of a scanning technique to illuminate the panel (1)) which is selectable from amongst variable values thereof or which is actively modifiable in value over time.

The invention relates to a functionalised disk for a vehicle. The disk (1) comprises a transparent base body (6) which has a front side (7) and a rear side (8). The base body (6) has a semitransparent incoupling region (4) and an outcoupling region (5), which is arranged at a distance from the incoupling region in a first direction (R1). The incoupling region (4) has a diffactive structure which deflects only one part of radiation coming from an object to be detected and impacting upon the front side (7), in such a way that the deflected part propagates as incoupled radiation in the base body (6) up to the outcoupling region (5) by means of reflections and impacts upon the outcoupling region (5). The outcoupling region (5) deflects at least one part of the incoupled radiation impacting upon the outcoupling region (5) in such a way that the deflected part exits the base body (6) via the front side (7) or the rear side (8) in order to impact upon the detector system (2).

The present disclosure relates to a holographic device and a method of forming a holographic device for a virtual retinal display, the holographic device comprising: a transparent substrate; and a holographic element disposed on the substrate; wherein the holographic element comprises a phase pattern, and the phase pattern is a predefined optical coma that is configured and arranged to diffract light from a light source to form a plurality of images at an image plane of the holographic element. The present disclosure relates to a virtual retinal display comprising a holographic device. The invention relates to an augmented reality system. The augmented reality system comprises a virtual retina device and a pair of smart glasses.

A holographic optics module having a main body having a first surface, and two or more area elements each having a holographic structure is provided, wherein the two or more area elements are arranged on the first surface of the main body such that they form a coherent area that provides a predetermined optical function.