44results about "Halographic mechanical components" patented technology

The invention relates to a method (1000) for manufacturing a hologram security element (2000) comprising the steps: Capturing (1010) image information; Calculating (1020) a phase image that corresponds to the image information in the far field; Folding (1030) the phase image with the imaging function of at least one optical element to assign the far field image information to a different display position; Arranging a holographic recording material in front of a reflective spatial phase modulator such that one side of the holographic recording material faces the spatial phase modulator, Exposure of the recording material with coherent light (52) from the side facing away from the spatial phase modulator, such that the coherent light incident on the side facing away from the spatial phase modulator interferes in the holographic recording material with the phase-modulated light reflected from the reflecting spatial phase modulator in order to store a hologram in the recording material (1100).

The present application provides a kind of lighting device, wherein the laser from light emitting part (111) is shaped as parallel light via shaping optical system (112), and is irradiated to the incident surface (P2) of diffractive optical element (120) recorded with holographic image.Projection pattern (E) formed by arrow towards specified direction (D) is projected to the illumination object surface (U) on road surface as hologram reproduction image.Optical element driving part (130) makes diffractive optical element (120) rotate around rotation axis (Rx) on rotation plane (P1) perpendicular to the optical axis (C) of parallel incident light (L).Through the rotation, the geometric position relationship of diffractive optical element (120) relative to the illumination object surface (U) changes, so that the direction (D) of projection pattern (E) formed by arrow on road surface can be changed.

A diffuser arranged to rotate around a rotation centre thereof is provided. Each point on the diffuser forms a diffusion profile that is a function of radial distance from the rotation centre but rotationally invariant.

Concealed Individualized Hologram Security Element and Method and Device for Verification The invention relates to a method (1000) for producing a hologram security element (2000) comprising the steps: capturing (1010) image information; calculating (1020) a phase image that corresponds to the image information in the far field; folding (1030) the phase image with the imaging function of at least one optical element to assign the far-field image information to a different display position;Arranging a holographic recording material in front of a reflective spatial phase modulator, such that one side of the holographic recording material faces the spatial phase modulator, exposing the recording material with coherent light (52) from the side facing away from the spatial phase modulator, so that the coherent light incident on the holographic recording material from the side facing away from the spatial phase modulator interferes with the phase-modulated light reflected from the reflective spatial phase modulator in order to store a hologram in the recording material (1100). The invention further relates to a manufacturing device, a verification method and a verification device.

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.

An optical measurement method includes: preparing an optical system for recording a hologram caused by modulating, with a reference beam, an object beam obtained by illumination of a sample with illumination light, the reference beam being coherent to the illumination light; arranging a calibration unit on an optical path of the illumination light in a state where there is no sample, the calibration unit including an optical system that produces a known optical wave distribution; recording a first hologram caused while the calibration unit is producing an optical wave distribution; and calculating information about an optical wave distribution of the reference beam based on information indicating a position where the calibration unit is arranged, the known optical wave distribution, and the first hologram.

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.

The invention relates to a measurement method for determining at least one replication parameter for a replication method using at least one master element. The measurement method involves providing: a master element comprising a reflection hologram; a light source; a detector; and a diffuser. The diffuser is positioned between the master element and the detector. The measurement method also involves irradiating the master element with light by means of the light source, sensing an intensity distribution of the light exiting the diffuser by means of the detector, and determining at least one replication parameter on the basis of the sensed intensity distribution.

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).

To provide a technology that can measure samples with higher accuracy while reducing the effort required for adjustment. [Solution] The optical measurement method includes the steps of: configuring an optical system for recording a hologram generated by modulating object light obtained by illuminating a sample with illumination light using reference light coherent with the illumination light; placing a calibration unit including an optical system that generates a known light wave distribution on the optical path of the illumination light in a state where no sample is present; recording a first hologram generated when the calibration unit is generating the light wave distribution; and calculating information on the light wave distribution of the reference light based on information indicating the placement position of the calibration unit, the known light wave distribution, and the first hologram.

Concealed Individualized Hologram Security Element and Method and Device for Verification The invention relates to a method (1000) for producing a hologram security element (2000) comprising the steps: capturing (1010) image information; calculating (1020) a phase image that corresponds to the image information in the far field; folding (1030) the phase image with the imaging function of at least one optical element to assign the far-field image information to a different display position;Arranging a holographic recording material in front of a reflective spatial phase modulator, such that one side of the holographic recording material faces the spatial phase modulator, exposing the recording material with coherent light (52) from the side facing away from the spatial phase modulator, so that the coherent light incident on the holographic recording material from the side facing away from the spatial phase modulator interferes with the phase-modulated light reflected from the reflective spatial phase modulator in order to store a hologram in the recording material (1100). The invention further relates to a manufacturing device, a verification method and a verification device.

The invention relates to a device for replicating a hologram from a master hologram. The device preferably comprises an intensity-modulating unit and a beam-shaping unit, wherein the intensity-modulating unit is configured for setting the intensity distribution of a light wave with which the beam-shaping unit is subsequently irradiated. The beam-shaping unit is configured for generating a free-form wave with a spatially varying angular distribution for illuminating the master hologram, wherein the angular distribution of the free-form wave can be predetermined by the intensity distribution of the light wave from the intensity-modulating unit incident on the beam-shaping unit.

The invention relates to a method (1000) for manufacturing a hologram security element (2000) comprising the steps: Capturing (1010) image information; Calculating (1020) a phase image that corresponds to the image information in the far field; Folding (1030) the phase image with the imaging function of at least one optical element to assign the far field image information to a different display position; Arranging a holographic recording material in front of a reflective spatial phase modulator such that one side of the holographic recording material faces the spatial phase modulator, Exposure of the recording material with coherent light (52) from the side facing away from the spatial phase modulator, such that the coherent light incident on the side facing away from the spatial phase modulator interferes in the holographic recording material with the phase-modulated light reflected from the reflecting spatial phase modulator in order to store a hologram in the recording material (1100).

A method of manufacturing a thin film optical apparatus includes providing a substrate and applying an alignment layer over the substrate. The alignment layer ranges from about 50 to 100 nm in thickness. The method includes imprinting a hologram with a desired optic pattern onto the alignment layer and applying at least one layer of mesogen material over the alignment layer.

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.

In some embodiments, holographic presentations despite using holographic displays having limited viewing angles may be facilitated. In some embodiments, a user may be detected via one or more sensors associated with a holographic display system, where the holographic display system being configured with a first viewing angle. Based on the detection of the user, a direction of the user may be determined. The first viewing angle of the holographic display system may also be determined. For example, the holographic display system may determine a current first viewing angle. Based on the direction of the user, the first viewing angle may be adjusted such that the user becomes within the adjusted first viewing angle of the holographic display system.

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.

The invention relates to a method for replicating a hologram in a replication assembly with an exposure module. The exposure module comprises at least one light source and a master element comprising a master hologram to be replicated, and is configured to bring the replication assembly into optical contact with the master element. The at least one light source illuminates the master hologram onto a region of the replication assembly to obtain a replicated hologram. The method includes providing a beam-shaping unit, adjusting the intensity distribution of a light wave with which the beam-shaping unit is irradiated, and generating a free-form wave with a spatially varying angular distribution by means of the beam-shaping unit, wherein the angular distribution is determined by the intensity distribution of the light wave.The invention further relates to a method for determining an intensity distribution of a light wave, an intensity-modulating unit for the exposure of a master hologram with a desired free-form wave and its use for the replication of a master hologram in a replication network.

A holographic projector comprises a display device arranged to form a holographic wavefront by spatially modulating light in accordance with a hologram of a picture displayed thereon. The projector co

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.

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.

The present disclosure provides an apparatus and method for fabricating optical devices. The apparatus includes a support table having process chambers and a laser used to direct a beam along a propagation path to each of the process chambers. A central mirror is centrally disposed among the process chambers and is rotatable to reflect the beam to each of the process chambers for processing. A beam splitter is disposed within each of process chambers, each beam splitter is used to receive beams from the central mirror and emits a first beam in a first direction and a second beam in a second direction. A first mirror directs the first beam to a device and a second mirror directs the second beam to the device. Each of the first and second mirror is rotatable in at least three axes.

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.

The invention relates to techniques for producing a holographic optical element (HOE) by replication of a master HOE. In particular, the invention relates to techniques for flexibly adjusting the diffraction efficiency of the HOE. An adjustable optical element (54) can be used to modify the intensity and / or the polarisation of light during the exposure process.

A (phase-delay) kinoform (2200), arranged for rotation (centred at 2210), divided into a plurality of concentric zones (2220, 2230), each concentric zone sub-divided into a plurality of phase-delay ar

The present disclosure concerns an imaging system for imaging a sample immersed in a controlled environment. The system comprises - at least one enclosure configured to hold at least one imaging sensor or camera inside the enclosure, the enclosure including at least one opening and at least one transparent window for imaging the sample; and - a flexible channel comprising a first extremity and a second extremity, the first extremity being connected to the enclosure at said at least one opening and the second extremity being configured to be connected to a wall of the hermetic chamber, the flexible channel defining or enclosing a passage extending through the flexible channel and to or into the enclosure.

A method for producing a holographic back reflector using an exposure device comprises arranging a photopolymer film in a beam path of the exposure device. The beam path includes a divergent section between a focusing point and a concave mirror, as well as a convergent section superimposed on the divergent section. By emitting coherent light along the beam path, the two components of the light interfere in the region of the photopolymer film, thereby forming a holographic-optical element in the film. This method enables the production of a high-quality holographic back reflector.

The holographic volume grating in the waveguide cell can be recorded using many different methods and systems in accordance with various embodiments of the invention.SOLUTION: One embodiment includes a holographic recording system including at least one laser source configured to emit recording beams, and a movable platform configured to move between a first position and a second position, wherein when the movable platform is in the first position, the at least one laser source is configured to emit a first set of one or more recording beams toward a first set of one or more stations; When the moveable platform is in the second position, the at least one laser source is configured to emit a second set of one or more recording beams toward a second set of one or more stations.SELECTED DRAWING: Figure 11B

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.