153results about "Halographic mechanical components" patented technology

Holographic volume gratings in waveguide cells can be recorded using many different methods and systems in accordance with various embodiments of the invention. 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 and when the movable 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.

The present invention relates to systems and methods for high throughput recording of holographic gratings in waveguide cells, wherein a number of different methods and systems can be used to record holographic volume gratings in waveguide cells. One embodiment includes a holographic recording system comprising at least one laser source configured to emit a recording beam, 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, and when the movable 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.

A flying-over beam pattern scanning hologram microscope device includes: a scan beam generation unit which converts of a first beam and a second beam to a first spherical wave; a scanning unit, which includes a spatial modulation scanner for controlling the scan beam in the horizontal direction, and a translation stage for moving an object in the vertical direction at the rear end of the projection unit; the projection unit projecting the scan beam onto an object plane; and a light collection unit which detects a beam that has passed through the objective lens again after being reflected or fluoresced from the object.

Different examples relate to techniques in order to actively or passively stabilize the temperature of a holographic optical element. To this end, heat-conducting elements, e.g. silver nanowires or carbon nanotubes, are provided.

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.

Holographic volume gratings in waveguide cells can be recorded using many different methods and systems in accordance with various embodiments of the invention. 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 and when the movable 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.

A replication method for producing a hologram copy by simultaneous exposure of a master hologram and a copy carrier comprising a photosensitive material is provided. The contact body is brought into contact with the copy carrier during the exposure, the contact body and the copy carrier directly touching one another in a part through which exposure light is radiated during the exposure. The contact body is transparent to the exposure light, and the refractive index of the contact body is matched to the refractive index of the copy carrier. Also provided is a device for realizing the replication method.

The invention relates to a device for replicating a plurality of holograms. The apparatus comprises: a first carrying device for arranging a series of master elements of a plurality of master elements based on a plurality of holograms to be replicated in such a way that upper surfaces of the master elements are aligned in a horizontal plane; and a lamination module for removably laminating the photosensitive composite web onto the aligned upper surface of the master element. Further, the apparatus comprises: an exposure module for exposing the master element so as to copy the master hologram into the web of photosensitive composite; and a separation module for separating the exposed composite web from the master mask element. The master elements are removably incorporated in the first carrier device such that the sequence and / or composition of the master elements for replicating the plurality of holograms is variable. Furthermore, the master elements are merged in the first carrier such that two or more faces of the master elements are optically accessible for exposure.

An optical assembly is provided for use in holographic display of a replay image. The optical assembly may be of particular use is an augmented reality headset. The optical assembly includes a light-modulation element arranged to be illuminated off-axis by a light beam. The light-modulation element modulates the incident light to generate a replay image and generates a zero-order light beam. A focusing system is arranged after the light-modulation element. A light remover is positioned after the focussing system and is configured to remove the zero-order light beam from the light focussed by the focussing system. The focussing system is configured to focus zero-order light from the light-modulation element in a first plane different from a second plane which is the plane of focus of parallel light of the replay image. The light remover removes the zero-order light in the first plane.

The invention relates to a device for continuously replicating holograms, comprising: a coating module arranged to coat a liquid photopolymer onto a first carrier film; a lamination module arranged to apply a second carrier film onto the first carrier film coated with the photopolymer in order to obtain a photopolymer composite comprising a liquid photopolymer layer between the two carrier films; an exposure module, the exposure module having a light source and a master element comprising a master hologram to be replicated, the master element being mounted so as to be axially rotatable, and the exposure module being arranged such that a photopolymer composite is in optical contact with the master element, simultaneously exposing the master hologram onto the region of the photopolymer composite by the light source to obtain a duplicated hologram; and a securing module arranged to cure the replicated hologram in the photopolymer composite.

The invention relates to a method for replicating a polychromatic hologram combination, comprising the following steps: providing a first master hologram which is designed for a first wavelength range, and providing a second master hologram which is designed for a second wavelength range; providing a replication combination comprising a first light-sensitive layer on a replication substrate; exposing the first master hologram to obtain a first replicated hologram in the first light-sensitive layer by means of light of the first wavelength range; fixing the first replicated hologram in the first light-sensitive layer; applying a second light-sensitive layer onto the first light-sensitive layer; exposing the second master hologram to obtain a second replicated hologram in the second light-sensitive layer by means of light of a second wavelength range; fixing the second replicated hologram in the second light-sensitive layer. The invention also relates to a replication combination comprising at least a first and a second replicated hologram, which replication combination can be produced by means of the method according to the invention.

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 invention relates to a method for replicating a hologram into a light-sensitive composite web, comprising the following steps: Providing a master element comprising a substrate part and at least one master hologram; optionally providing an incoupling element; providing an adhesive composite web comprising a light-sensitive composite web and an optical adhesive film; applying the adhesive composite web to a surface of the master element or a surface of the optional incoupling element; exposing the master element in order to replicate the at least one master hologram into the light-sensitive composite web, the optical adhesive film establishing optical contact between the light-sensitive composite web and the master element, or between the light-sensitive composite web and an incoupling element, wherein an incoupling element is optionally used for the exposure; and detaching the adhesive composite web from the master element or the incoupling element.

The present invention relates to a system for replicating an object in holography, comprising: means for irradiating the object with a beam at a set angle of incidence; means for adapting an extent of the beam before the beam is incident on the object, based at least in part on the set angle of incidence. Furthermore, the invention relates to a corresponding device and method and a corresponding computer program.

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.

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 invention relates to a system (1) for digital holographic imaging, comprising at least the following components: a beam splitter (2) that defines four sides with a beam splitter surface (2a), a retroreflector array (3) that is arranged on the second or the third side (22, 23) and comprises a plurality of retroreflector elements (30), and a reference mirror (4) that is arranged on an adjacent side (23, 22) to the retroreflector array (3), wherein the system (1) is configured to impress wavelength-dependent phase shifts on object light (100) for each retroreflector element (3), said phase shifts being different for a plurality of retroreflector elements (3).

A volumetric display system including a volumetric display for displaying a scene viewable as a three-dimensional floating-in-the-air scene in a display space, enabling a user to reach a first object into the display space, a location determination unit locating real objects in the display space, providing a location of the first object when the first object is inserted into the display space, and a computer for receiving the location of the first object, detecting when the location of the first object is at a location where an object is displayed in the three-dimensional scene, thereby determining that the first object is viewable as touching the displayed object following a detection of the first object viewable as touching the displayed object, producing a new three-dimensional scene displaying the displayed object as if manipulated by the first object. Related apparatus and methods are also described.

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.

The invention relates to a method for replicating a hologram in a photosensitive composite web. The method according to the invention preferably comprises providing a master element comprising a substrate body and at least one master hologram, applying a photosensitive composite web on a surface of the master element, exposing the master element to copy the at least one master hologram into the photosensitive composite web, and separating the exposed composite web from the master element. The method further includes temporarily applying an optical adhesive film between the photosensitive composite web and a surface of the master element. The optical adhesive film enables optical contact between the master element and the photosensitive composite web during exposure. In another aspect, the invention relates to a method of replicating a hologram in a photosensitive composite web using an input coupling element wherein an optical adhesive film is introduced between the composite web and the input coupling element.

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.

A three-dimensional holographic display device includes a light emitting diode (LED) array including a plurality of light sources controlled to sequentially output light according to a preset pattern, a lens configured to refract light incident from the LED array, a spatial light modulator (SLM) configured to modulate light incident from the lens, and a processor configured to generate a plurality of holographic signals each comprising depth information adjusted according to an arrangement location of each of the plurality of light sources, and for each of the plurality of light sources, control the SLM to modulate the light based on a holographic signal corresponding to the light source.

A microscopy system and method use super-resolution to generate the equivalent of a digital holographic image. Through super-resolution, images of nanoscale sized objects may be captured without interrupting the object (for example, a virus) or the object's environment. The information gathered through super-resolution techniques may be transformed into holographic replications of the object which may be analyzed with greater accuracy of the object.

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.

The invention relates to a device for replicating a plurality of holograms. The device comprises a first carrier means for arranging a sequence of master elements from multiple master elements according to a plurality of holograms to be replicated, so that upper faces of the master elements are aligned in a horizontal plane, and a lamination module for detachably laminating a light-sensitive composite web onto the aligned upper faces of the master elements. The device also comprises an exposure module for exposing the master elements in order to replicate the master holograms into the light-sensitive composite web, and a detachment module for detaching the exposed composite web from the master elements. The master elements are detachably inserted in the first carrier means, so that a sequence and / or composition of the master elements can be varied for the replication of the plurality of holograms. In addition, the master elements are inserted in the first carrier means in such a way that two or more faces of the master elements are optically accessible for the purpose of exposure.

The present disclosure provides a collapsible pyramid holographic projection imager (3) and a packaging box including the same. The collapsible pyramid holographic projection imager (3) includes a pyramid imaging member (32) and a bottom fixing member (31), where the pyramid imaging member (32) includes two support plates (321) and a holographic projection film (322); a middle of the support plate (321) is shaped as a "crisscross" framework; the holographic projection film (322) is fixed between the two support plates (321); four pre-cuts (311) are formed in the bottom fixing member (31); in response to a collapsed state of the collapsible pyramid holographic projection imager (3), the pyramid imaging member (32) and the bottom fixing member (31) are placed independently in a sheet manner; and in response to an expanded state of the collapsible pyramid holographic projection imager (3), the collapsible pyramid holographic projection imager (3) assists an image generation device, and a video or an image played by the image generation device is projected to the collapsible pyramid holographic projection imager (3) to form a three-dimensional (3D) image.

Provided is a holographic printer using a mechanical shutter having adjustable exposure time and no vibration. The holographic printer according to an embodiment of the present invention comprises: a light source; a modulator for generating a holographic fringe pattern in hogel units; a stage on which a hologram recording medium is placed; a driving part for moving the position of the stage in hogel units; and a shutter for periodically exposing an object light due to the holographic fringe pattern generated by the modulator to the hologram recording medium. The shutter comprises: a rotation plate having formed therein an arc-shaped opening which exposes the object light due to the holographic fringe pattern; and a motor for rotating the rotation plate. Therefore, the exposure period and exposure time of the shutter can be variously adjusted by adjusting the rotational state of the rotation plates having the arc-shaped opening formed therein.