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Match Document Document Title
US20120013963 HOLDER FOR A HOLOGRAPHIC GRATING  
An adjustable holder (1) for a concave holographic grating (2) for enabling the correct positioning of the grating vis-à-vis a light entrance port (15) and a light exit port (20), characterized...
US20120147443 SOLAR LIGHT CONCENTRATION PLATE  
A solar light concentration plate comprises a plurality of holograms diffracting incident light wherein each of the plurality of the holograms has a thickness, at least one intermediate light...
US20150168625 CURVED VOLUME PHASE HOLOGRAPHIC (VPH) DIFFRACTION GRATING WITH TILTED FRINGES AND SPECTROGRAPHS USING SAME  
The subject matter described herein includes a curved VPH grating with tilted fringes and spectrographs, both retroreflective and transmissive, that use such gratings. A VPH grating according to...
US20140022615 CURVED VOLUME PHASE HOLOGRAPHIC (VPH) DIFFRACTION GRATING WITH TILTED FRINGES AND SPECTROGRAPHS USING SAME  
The subject matter described herein includes a curved VPH grating with tilted fringes and spectrographs, both retroreflective and transmissive, that use such gratings. A VPH grating according to...
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...
US20130167903 ENCAPSULATED SOLAR ENERGY CONCENTRATOR  
A holographic planar concentrator of solar energy employing an array of holographically-recorded diffraction grating elements adjoining the corresponding bifacial or monofacial PV-cell....
US20110122469 HIGH DISPERSION DIFFRACTION GRATING INCLUDING MULTIPLE HOLOGRAPHIC OPTICAL ELEMENTS  
A multi-element diffraction grating is disclosed. The multi-element diffraction grating may be configured to diffract incident radiation with high dispersion using at least two holographic optical...
US20140117260 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...
US20150160393 SOLAR LIGHT CONCENTRATION PLATE  
A solar light concentration plate comprises a first hologram which receives solar light and diffracts incident light in a range of an incident angle, and first and second light guides respectively...
US20120194886 SOLAR LIGHT CONCENTRATION PLATE  
A solar light concentration plate comprises a first hologram which receives solar light and diffracts incident light in a range of an incident angle, and first and second light guides respectively...
US20070041067 Document security strip and secured document  
The present invention concerns a strip for safeguarding a document, comprising a support on which there is formed in the longitudinal direction of the strip an alternation of generally metallised...
US20060039050 Live print scanner with active holographic platen  
This invention relates to the use of holographic optical elements in the design and application of biometric scanning instruments used typically for capturing biometric information such as...
US20050068595 Holographic projection for grave memorial  
A system for conveying information about a deceased individual. The system employs a holographic projector for projecting 3-D visual information and an energy source for powering the holographic...
US20100027085 Adjustable Beam Portable Light  
A lighting device is disclosed which provides for an adjustable beam. The adjustable beam involves the use of a hologram diffuser with areas that have different diffusing properties. The different...
US20090027747 HOLOGRAPHIC MICROSCOPY OF HOLOGRAPHICALLY TRAPPED THREE-DIMENSIONAL STRUCTURES  
A method and system for performing three-dimensional holographic microscopy of an optically trapped structure. The method and system use an inverted optical microscope, a laser source which...
US20100073747 Wavelength-multiplex and space-multiplex holographic storage device  
The present invention discloses a wavelength-multiplex and space-multiplex holographic storage device, which comprises a storage medium, a plurality of signal light beams and at least one...
US20050041273 METHOD FOR CAPTURING A PATTERN PRINTED ON A PRINT MEDIUM AND RELATED APPARATUS  
A method for capturing a pattern, which is printed on a print medium and contains a holographic image, includes providing an image-capturing device comprising a light source for emitting light...
US20090175033 LED night light has laser or hologram element(s)  
The LED night light has laser or hologram optics-means for night time or dark area use for long time period illumination including plug-in wall outlet night light or direct current(DC) operated...
US20060274394 Holographic drive head and component alignment  
The present invention relates to embodiments of: (1) a unitary holographic drive head assembly mounting structure; (2) an assembly comprising a unitary holographic drive head assembly mounting...
US20060279819 Laser mode stabilization using an etalon  
Systems and methods are provided or use with a light source which generates a light beam. These systems may include a detector which detects light beam information regarding a light beam exiting...
US20090002788 VERIFICATION OF DATA STORAGE HOLOGRAMS  
A holographic storage drive of a holographic data storage system is configured to write and read holograms with respect to a plurality of locations of a holographic storage medium; and a control...
US20080231924 Hologram element, illuminator, and projector  
The disclosure is directed to hologram elements, illuminators, and projectors. In one example, a hologram element comprises a relief structure configured to diffract incident light to form a first...
US20050117185 Security element of the hologram type and the like for preventing counterfeiting and falsification for documents in general  
A security element of the hologram type for preventing counterfeiting and falsification for documents in general, which comprises a layer of holographic material and initially can be optionally...
US20120257266 TRANSMISSION TYPE OPTICAL ELEMENT AND ANTI-FORGERY VOLUME HOLOGRAM  
A transmission type optical element comprising a first hologram having a first surface and a second surfaces and a second hologram having a third surface and a fourth surface. The first surface of...
US20110265358 NUMBER PLATE PREFERABLY MOTOR VEHICLE NUMBER PLATE AND METHOD FOR PRODUCTION THEREOF  
An identification plate, in which at least one security sign is arranged within the contours of a cover layer. As a result, the security sign is embedded in the cover layer and thus becomes an...
US20110085116 DUAL LAYER HOLOGRAPHIC COLOR FILTER AND TRANSMISSIVE LIQUID CRYSTAL DISPLAY USING THE SAME  
A dual layer holographic color filter and a transmissive liquid crystal display using the same. The dual layer holographic color filter includes a first hologram, which is provided between a light...
US20060146385 Visual effect based on a micro-optical grid structure  
A micro-optical grid structure formed on a substrate, a method for producing the grid structure, and a product that includes one or several pattern areas formed by the grid structure. The grid...
US20050195456 Artificial star generation apparatus and method for telescope systems  
This invention describes an apparatus and method for generating artificial stars for the simple collimation of catoptric, dioptric, and catadioptric telescopes using a light source along with an...
US20130286452 CONTAINER WITH DIFFUSE REFLECTION IN A TRANSITION AREA  
The present invention relates to a container comprising a multilayer sheet, the multilayer sheet comprising a substrate layer with an optical element being formed by a reflective microstructure,...
US20080247167 DIFFRACTION OPTICAL ELEMENT, LIGHTING DEVICE, AND PROJECTOR  
A diffraction optical element includes: a first diffraction pattern which diffracts entering light to produce illumination light for illuminating a first area; and a second diffraction pattern...
US20130155477 AUTOSTEREOSCOPIC DISPLAY ASSEMBLY BASED ON DIGITAL SEMIPLANAR HOLOGRAPHY  
This invention relates to autostereoscopic display assemblies, in particular for hand-held devices such as tablets, i-Pads, mobile phones, etc., wherein a stereoscopic effect is achieved by...
US20090207467 Single Laser Illuminating and Pointing Systems  
Dual-function laser systems and methods are disclosed. In one implementation, an apparatus includes a laser source configured to emit a beam; an optical element spaced apart from the laser source;...
US20080094675 Volumetric imaging of holographic optical traps  
A method and system for manipulating object using a three dimensional optical trap configuration. By use of selected hologram on optical strap can be configured as a preselected three dimensional...
US20120262769 HOLOGRAPHIC SOLAR COUPLER  
A method of focusing radiation with an array of lenses, which includes modifying the angles of propagation and convergence and/or divergence with transmission and reflection holographic optical...
US20080117485 Home protection detection system featuring use of holograms  
A security system comprises an intrusion detector for detecting an intruder on a premises, and a hologram image generator which produces a hologram image of a live object such as a person or guard...
US20080204836 HOLOGRAPHIC OPTICAL ELEMENT AND COMPATIBLE OPTICAL PICKUP DEVICE INCLUDING THE SAME  
An optical pickup device is compatible with first and second information storage media having different thickness, and includes a light source to emit light; a holographic optical element having...
US20120223219 EXTENDED AND KNOTTED OPTICAL TRAPS IN THREE DIMENSIONS  
The present invention is directed toward a system and method for projecting holographic optical traps whose intensity maxima are extended along specified paths in three dimensions with specified...
US20100033779 TRANSMISSION TYPE OPTICAL ELEMENT AND ANTI-FORGERY VOLUME HOLOGRAM  
A transmission type optical element 10 includes a first hologram 1′ having a first surface 1a and a second surfaces 1b and a second hologram 2′ having a third surface 2a and a fourth surface 2b,...
US20060109534 Ultra-flat reflective MEMS optical elements  
The present invention relates to producing ultra flat micro surfaces suitable, for instance, for micro-mirrors. In particular, it relates to low pressure chemical mechanical planarization (CMP) of...
US20120194887 HOLOGRAM FABRICATION PROCESS AND FABRICATED HOLOGRAM  
A volume hologram recording material is located on the side of a reflection type volume hologram master onto which copying illumination light is incident, and the copying illumination light...
US20080062490 Holographic Storage System  
A holographic storage system. A low over-sampling technology and an adaptable gain-controlling unit are used in the holographic storage system for unequally amplifying signals generated by a...
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...
US20120002197 Method and Apparatus Using Volume Holographic Wavelength Blockers  
The invention disclosed here teaches methods to fabricate and utilize a non-dispersive holographic wavelength blocker. The invention enables the observation of the Raman signal near the excitation...
US20080283733 Contactless switches  
Switch including a support control organ in motion relative to a fixed device, the organ and the support being in such a relationship that a plurality of distinct relative positions produce...
US20140185286 APPARATUS FOR CONDENSING LIGHT FROM MULTIPLE SOURCES USING BRAGG GRATINGS  
There is provided a colour sequential illumination device comprising in series: first and second light sources; a condenser lens; and a grating device. The grating device comprises at least one...
US20100053711 DEVICE FOR SELECTION OF LIGHT IN A REFRACTION ARRANGEMENT  
A device for the selection of light of at least one diffraction order comprises a light modulator device comprising a hologram. The light modulator device emits modulated light, where the light...
US20080094674 Holographic Lithography  
A method of generating a holographic diffraction pattern and a holographic lithography system are disclosed. The method involves defining at least one geometrical shape; generating at least one...
US20140016051 COMBINED LIGHT MODULATION DEVICE FOR TRACKING USERS  
For comfortable viewing of a 3-D scene at various viewing angles, a display having a large tracking range for a variable viewer distance is required. A controllable light-influencing element...
US20080043302 Color dispersion compensated holographic light guide plate  
A holographic light guide plate has a transparent substrate and a plurality of diffraction patterns formed thereon. The diffraction patterns are arranged on one of a top surface and a bottom...
US20080309997 Hologram Screen  
The present invention provides a holographic screen having high durability and high diffraction efficiency due to a modulated refractive index structure having a large refractive index change Δn....

Matches 1 - 50 out of 308 1 2 3 4 5 6 7 >