Matches 1 - 50 out of 161 1 2 3 4 >


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US20060238843 VIDEO HOLOGRAM AND DEVICE FOR RECONSTRUCTING VIDEO HOLOGRAMS USING A FRESNEL TRANSFORM  
A display device generates a holographic reconstruction of a three dimensional scene from a hologram; the device is operable such that the holographic reconstruction is the Fresnel transform of...
US20090199900 THIN FILM HOLOGRAPHIC SOLAR CONCENTRATOR/COLLECTOR  
In various embodiments described herein, a device comprising one or more light guides that is optically coupled to one or more photocells is described. The device further comprises one or more...
US20060291024 In-line holographic mask for micromachining  
A method of patterning a workpiece comprises providing a source of illumination, a workpiece, a holographic mask and an optical element. The optical element is positioned in the optical path...
US20090323144 ILLUMINATION DEVICE WITH HOLOGRAPHIC LIGHT GUIDE  
An illumination device includes a holographic film and a light source, such as a point light source. The point light source is positioned at an edge of the holographic film and has a light...
US20080088895 Article With Micro Indicia Security Enhancement  
The invention provides an article having an enhanced security feature provided by association of first indicia imaged directly on a substrate or an additional layer supported thereby, and second...
US20100238529 DITHERED HOLOGRAPHIC FRONTLIGHT  
A reflective or transmissive hologram may be used to extract light from a waveguide. The hologram may be formed by separately exposing each of a plurality of areas of a holographic medium with...
US20150198438 DIFFRACTIVE OPTICAL ELEMENT AND MEASURING METHOD  
A diffractive optical element (50) with a substrate (52) and a diffractive structure pattern (54) arranged thereon. The diffractive structure pattern is configured to convert a plane or spherical...
US20110002019 HOLOGRAPHIC IMAGE DISPLAY SYSTEMS  
The invention relates to techniques for speckle reduction in holographic optical systems, in particular holographic image display systems. We describe a holographic image display system for...
US20090237761 Direction of Optical Signals by a Movable Diffractive Optical Element  
A method and apparatus particularly useful for telecommunications applications, such as switching (Add/Drop), multiplexing and demultiplexing, is disclosed. The method commences by directing a...
US20050036182 Methods for implementing page based holographic ROM recording and reading  
According to one aspect, methods and systems for recording and reading holographic storage media are provided. In one aspect, a method includes illuminating a data mask with a beam and recording a...
US20100214635 DISPLAY DEVICE, DISPLAY METHOD AND HEAD-UP DISPLAY  
A display device, generating light flux containing image information and making the light flux incident to one-eye of an image viewer by controlling an angle of divergence of the light flux is...
US20070195392 Adhesive Chromagram And Method Of Forming Thereof  
An optical structure is provided wherein a windowed demetallized hologram is hot stamped on to an optically variable foil and wherein the demetallized hologram optionally has a coating of...
US20150378080 VOLUME HOLOGRAM FOR OPTIC ILLUMINATION  
An optical system includes an illumination source, a volume hologram, and an image-forming optic. The illumination source is configured to emit coherent light, and the volume hologram is...
US20120299808 Image Display Device  
An image display device which enables tracking of a viewer and is convertible into a 2D display mode without loss of viewing angle, includes an image panel to emit a 2-dimensional (2D) image, a...
US20080266524 Autostereoscopic projection system  
The invention relates to an autostereoscopic projection arrangement, comprising at least one projector (4) and at least one filter array (F1, F2), which has a multitude of filter elements arranged...
US20080084592 Molded Article Incorporating Volume Hologram  
A molded article is formed by molding a holographic recording material into a shape that is determined by the function of an molded article and a volume hologram is formed in the molded article....
US20070195391 REFLECTION TYPE DIFFUSE HOLOGRAM, HOLOGRAM FOR REFLECTION HOLOGRAM COLOR FILTERS, ETC, AND REFLECTION TYPE DISPLAY DEVICE USING SUCH HOLOGRAMS  
A method of fabricating a hologram having a pattern made up of pixels in which a photosensitive material for forming a hologram is stacked on either a reflection-type hologram or a transmission...
US20050248820 System and methods for spectral beam combining of lasers using volume holograms  
Volume holographic gratings are used to spectrally combine the emissions from multiple sources into a single output beam. Transmission or reflection gratings are utilized with either laser diode...
US20140376207 OPTICAL APPARATUS FOR ILLUMINATING A PIXEL MATRIX AND/OR A CONTROLLABLE SPATIAL LIGHT MODULATOR FOR A DISPLAY  
The invention relates to optical device for illuminating a pixel matrix and/or a controllable spatial light modulator for a display, in particular a stereoscopic or holographic 3D display, wherein...
US20100180946 INCREASING THE ANGULAR RANGE OF LIGHT COLLECTION IN SOLAR COLLECTORS/CONCENTRATORS  
In various embodiments described herein, a device comprises an angle turning layer disposed over a light guiding layer that is optically coupled to a photocell. A plurality of surface features is...
US20120120467 HYBRID LIGHT GUIDE WITH FACETED AND HOLOGRAPHIC LIGHT TURNING FEATURES  
The present disclosure provides systems, methods and apparatus to illuminate displays. In one aspect, an illumination device with a light guide can include both faceted and holographic light...
US20110228267 REFLECTION GRATING, AND SPECTROGRAPH AND PULSE SHAPER USING THE REFLECTION GRATING  
A reflection grating includes a transmission hologram layer for diffracting incident light, a reflection member in contact with the transmission hologram layer, and a reflection plane for...
US20070279718 Reflective features with co-planar elements and processes for making them  
The invention relates to a reflective feature, e.g., reflective security feature or reflective decorative feature, comprising a first element at least partially coplanar with a second element. The...
US20060087710 Image display  
Apparatus for displaying an image comprises a liquid crystal display 12, a lenticular lens array 14 for directing different portions of the image in different directions and mirrors 16 for...
US20100027084 HOLOGRAM OPTICAL ELEMENT AND SURFACE LIGHT SOURCE DEVICE USING THE HOLOGRAM OPTICAL ELEMENT  
A hologram optical element having a thin form and a high degree of light transmittance, moreover that provides superior handling ease, as well as a surface light source device employing this...
US20100020374 HOLOGRAM OPTICAL ELEMENT AND SURFACE LIGHT SOURCE DEVICE USING THE HOLOGRAM OPTICAL ELEMENT  
A hologram optical element having a thin form and a high degree of light transmittance, moreover that provides superior handling ease, as well as a surface light source device employing this...
US20160077338 Compact Projection Light Engine For A Diffractive Waveguide Display  
The technology provides a waveguide display having a compact projection light engine and a diffractive waveguide. The diffractive waveguide includes input diffraction gratings with rolled...
US20150147685 SYSTEM AND METHOD FOR HOLOGRAPHY-BASED FABRICATION  
A system and method may utilize holography to facilitate fabrication techniques such as 3D printing and lithography. The system may include a light source, a hologram of an original object or...
US20170082975 LENSLESS IMAGING DEVICE AND ASSOCIATED METHOD OF OBSERVATION  
The invention describes a device allowing the observation of a sample, comprising particles, for example biological particles, by lensless imaging. The sample is disposed against a substrate, the...
US20110019250 Image displaying apparatus and optical Apparatus  
The image displaying apparatus includes an image production apparatus, a first light conduction section and a second light conduction section. The first light conduction section includes a first...
US20120140182 Autostereoscopic Projection System  
An autostereoscopic projection arrangement, comprising at least one projector and at least one filter array, in which arrangement bits of partial information from views of a scene or object are...
US20120082943 DIFFRACTIVE PHOTO MASKS AND METHODS OF USING AND FABRICATING THE SAME  
An exemplary embodiment of the present invention provides a diffractive photo-mask comprising a body element, a plurality of interference/image-forming hologram gratings, and a zero-order beam...
US20100103488 DISPLAY DEVICE WITH DIFFRACTIVE OPTICS  
Light modulator displays may be illuminated using a light guide comprising diffractive optics that directs light onto an array of light modulators. A holographic light turning element may be...
US20060203338 System and method for dual stacked panel display  
A system for display of three dimensional images and video utilizing flat panel technology, such as liquid crystal technology, wherein the left and right images are separated by polarization and...
US20050248819 Wavelength stabilized lasers with feedback from multiplexed volume holograms feedback  
A laser utilizes feedback from a multiplexed volume holographic grating (VHG) as a stand alone element or integrated in a collimating lens as a wavelength standard to lock the laser output...
US20060215244 Vehicle display system  
System for displaying an incident image for an operator of a vehicle, the system including an optical assembly receiving the incident image from an image source, and a planar optical module...
US20050270607 System and methods for refractive and diffractive volume holographic elements  
A laser utilizes feedback from a volume holographic grating integrated in a collimating lens as a wavelength standard to lock the laser output wavelength to its desired value. This feedback is...
US20070081209 Image display device  
An image display device provided with a rectangular panel having a substrate 6 composed of glass or resin, a foreside laminated body 2 provided on the viewer side of the substrate 6 and a backside...
US20080049280 DISPLAY DEVICE AND BACKLIGHT UNIT  
A display device is provided, including: a display panel; a hologram part that is disposed behind the display panel; and a laser light source part that is behind the hologram part and provides...
US20070064289 Holographic recording medium  
A holographic recording medium according to the present invention includes a holographic material layer in which information is to be recorded by irradiating the same region with information light...
US20060119915 Display panel and display device  
Ultraviolet light, which has propagated through an optical waveguide, propagates in a direction changed by prisms and is emitted from a light-emitting surface to a liquid crystal display panel....
US20050259302 Holographic light panels and flat panel display systems and method and apparatus for making same  
An illumination panel for illuminating an object, comprising a substrate, a light diffractive grating and a light source. The substrate is made from an optically transparent material having first...
US20100014136 Holographic Projection System Using Micro-Mirrors for Light Modulation  
The invention relates to a holographic projection system wherein light modulator means SLM with electromechanically moved micro-mirrors modulate a light wave front LWmod. According to the...
US20090040580 OPTICAL DEVICE, AND VIRTUAL IMAGE DISPLAY  
There is provided an optical device including an optical waveguide upon which a group of parallel light beams different in traveling direction from each other are incident and from which the group...
US20080225361 Light Source Device, and Two-Dimensional Image Display Device  
There is provided a light source device which can miniaturize a two-dimensional image display device as small as possible. The light source device is provided with three coherent light sources...
US20160041323 LIGHT EXTRACTING DIFFUSIVE HOLOGRAM FOR DISPLAY ILLUMINATION  
This disclosure provides systems, methods and apparatus for illumination, such as for illuminating displays, including reflective displays. An illumination device may include a light-extracting,...
US20110117477 Photopolymerizable Compositions  
Currently known holographic recording media and sensors have a number of disadvantages, for example, silver halide-based recording media is expensive to produce and unsuitable for use in certain...
US20090115011 Solid-state imaging device and production method thereof  
A solid-state imaging device includes a plurality of photodiode regions arranged in an array, a non-transparent border region existing around each photodiode region, and a microlens array...
US20130208256 LDV with Diffractive Optical Element for Transceiver Lens  
A transceiver device that includes one or more light sources configured to emit a light beam that includes one or more different wavelengths, and includes a diffractive optical element configured...
US20150147684 SYSTEM AND METHOD FOR HOLOGRAPHY-BASED FABRICATION  
A system and method may utilize holography to facilitate fabrication techniques such as 3D printing and lithography. The system may include a light source, a hologram of an original object or...

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