Patent application number | Description | Published |
20130039160 | APPARATUS AND METHOD FOR RECORDING MICRO-HOLOGRAM - An apparatus and method for recording a micro-hologram are provided. The micro-hologram recording apparatus includes a first light source configured to emit a first light, the first light being coherent, a first optical system configured to divide the first light into a signal beam and a reference beam, and supply the signal beam and the reference beam to a location on a hologram recording medium, a second light source configured to emit a second light, the second light being incoherent and not interfering with the signal beam and the reference beam, and a second optical system configured to supply the second light to the same location as the signal beam and the reference beam on the hologram recording medium. | 02-14-2013 |
20130148180 | PHOTOREFRACTIVE COMPOSITE, SPATIAL LIGHT MODULATOR, AND HOLOGRAM DISPLAY DEVICE USING THE SAME - A photorefractive composite, a spatial light modulator and a hologram display device using the same include at least one carborane compound expressed as the following Chemical Formulae 1A through 1C: | 06-13-2013 |
20130148181 | PHOTOREFRACTIVE COMPOSITE, SPATIAL LIGHT MODULATOR, AND HOLOGRAM DISPLAY DEVICE USING THE SAME - A photorefractive composite, a spatial light modulator and a hologram display device using the same include at least one carborane compound expressed as the following Chemical Formulae 1A through 1C: | 06-13-2013 |
20130308170 | HIGH SPEED HOLOGRAM RECORDING APPARATUS AND METHOD - A high speed hologram recording apparatus and method. The hologram recording apparatus includes: a light source for emitting coherent light; a beam splitter for splitting the coherent light emitted from the light source into a signal beam and a reference beam; a signal beam transfer unit comprising an angular deflector that changes a direction of the signal beam according to time, and irradiating the signal beam onto a hologram recording medium; and a reference beam transfer unit irradiating the reference beam at a location of the hologram recording medium where the signal beam is also irradiated. | 11-21-2013 |
20140055830 | PHASE MASK AND HOLOGRAPHIC RECORDING APPARATUS EMPLOYING THE SAME - A phase mask includes a phase modulation layer that modulates a phase of different portions of incident light, differently, such that a different optical phase delay, in a range between 0 and 2π is imparted to different portions of the incident light. A hologram recording apparatus includes a light source; a signal beam optical system that divides a beam emitted from the light source into a reference beam and a signal beam, modulates the signal beam according to hologram pixel information, and radiates the signal beam onto a hologram recording medium. The signal beam optical system includes the phase mask. The hologram recording apparatus also includes a reference beam optical system that radiates the reference beam onto the hologram recording medium. | 02-27-2014 |
20140127611 | PHOTOPOLYMER COMPOSITION FOR RECORDING HOLOGRAM, AND PHOTOPOLYMER LAYER AND HOLOGRAM RECORDING MEDIA INCLUDING THE SAME - A photopolymer composition includes a polymer binder; a monomer for holographic recording; a photoinitiation system including an electron acceptor, at least one of an electron donor and a hydrogen atom donor, and a dye-sensitizer; and a solvent. The monomer for holographic recording includes N-acryloylthiomorpholine. | 05-08-2014 |
20140132999 | OPTICAL HEAD FOR HOLOGRAM OPTICAL APPARATUS AND METHOD OF OPERATING THE SAME - An optical head for a hologram optical apparatus and a method of operating the same are provided. The optical head for the hologram optical apparatus includes a reference light unit for guiding reference light, a signal light unit for guiding signal light, and a light source unit for providing 1 the reference light and the signal light to the reference light unit and the signal light unit, wherein the reference light unit and the signal light unit are stacked. The signal light unit includes: a plurality of optical waveguides stacked sequentially; composite hologram optical elements and lighting hologram optical elements disposed on the plurality of optical waveguides; an optical modulator for modulating light output from the plurality of the optical waveguides; and a lens for condensing light output from the optical modulator onto a recording layer. | 05-15-2014 |
20140133000 | PHOTOREFRACTIVE POLYMER COMPOSITE, AND PHOTOREFRACTIVE DEVICE AND HOLOGRAM DISPLAY DEVICE INCLUDING THE SAME - Provided are a photorefractive polymer composite, and a photorefractive devices and hologram display device including the same. The photorefractive polymer composite includes a photoconductive polymer matrix, a nonlinear optical chromophore, a plasticizer, and a graphite-based photocharge generator. | 05-15-2014 |
20140253997 | ISLANDS-IN-SEA TYPE PHOTOREFRACTIVE POLYMER COMPOSITE, AND PHOTOREFRACTIVE DEVICE AND OPTICAL DEVICE INCLUDING THE SAME - Provided are an islands-in-sea type photorefractive polymer composite, and a photorefractive device and an optical device including the same. The islands-in-sea type photorefractive polymer composite includes at least a photoconductive polymer matrix, a nonlinear optical chromophore, and a plasticizer, as a sea component, and includes at least a photocharge generator as an island component. | 09-11-2014 |
20140285863 | METHOD AND APPARATUS FOR HOLOGRAPHIC RECORDING - Provided is a holographic recording method in which an interference fringe between a reference beam and a signal beam, modulated according to information regarding a plurality of hologram pixels, is recorded on a holographic recording medium, the holographic recording method including multiplexing-recording the interference fringe of the plurality of hologram pixels such that at least a part of the interference fringe recorded of neighboring hologram pixels of the plurality of hologram pixels is overlapped. | 09-25-2014 |