| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 349201000 | Liquid crystal diffraction element | 19 |
| 20080204650 | POLYMERIZABLE LIQUID CRYSTAL COMPOUND, LIQUID CRYSTAL COMPOSITION, OPTICAL ANISOTROPIC MATERIAL AND OPTICAL ELEMENT - To provide a novel liquid crystal compound for preparing, for example, an optical element which can exhibit a proper Rd value depending upon usable wavelength and application and which is excellent in durability against a blue laser beam. | 08-28-2008 |
| 20080278675 | Polarization Gratings in Mesogenic Films - A polarization grating comprising a polarization sensitive photo-alignment layer ( | 11-13-2008 |
| 20080291390 | Color Temperature Conversion Element, Color Temperature Conversion Device and Illuminator - A color temperature conversion element includes a diffractive optical element that includes a polymer and a liquid crystal and diffracts light with a specific wavelength in incident light. | 11-27-2008 |
| 20080304004 | OPTICAL ELEMENT, LIQUID CRYSTAL DEVICE, ELECTRONIC APPARATUS, OPTICAL ELEMENT MANUFACTURING METHOD, AND LIQUID CRYSTAL DEVICE MANUFACTURING METHOD - An optical element includes a diffraction function layer for diffracting at least a part of incident light and a grid disposed on a first surface of the diffraction function layer and including a plurality of wires. The first surface includes a plurality of first areas and a plurality of second areas. The first areas and the second areas are different from each other in a height from a second surface of the diffraction function layer as a surface opposite to the first surface. Steps are provided on boundaries between the first areas and the second areas. | 12-11-2008 |
| 20100110364 | METHOD AND DEVICE FOR SPECKLE REDUCTION - A device and method for speckle reduction are disclosed, wherein a coherent laser beam ( | 05-06-2010 |
| 20100231847 | METHODS OF FABRICATING SWITCHABLE LIQUID CRYSTAL POLARIZATION GRATINGS ON REFLECTIVE SUBSTRATES AND RELATED DEVICES - A method of fabricating a switchable liquid crystal polarization grating includes creating a degenerate planar anchoring condition on a surface of a reflective substrate. An alignment layer may be formed on a transmissive substrate and may be patterned to create a periodic alignment condition therein. The transmissive substrate including the patterned alignment layer thereon may be assembled adjacent to the surface of the reflective substrate including the degenerate planar anchoring condition thereon to define a gap therebetween. A liquid crystal layer is formed on the surface of the reflective substrate including the degenerate planar alignment condition. The liquid crystal layer may be formed in the gap directly on the alignment layer such that molecules of the liquid crystal layer are aligned based on the periodic alignment condition in the alignment layer. Related fabrication methods and polarization gratings are also discussed. | 09-16-2010 |
| 20100302499 | IMAGE DISPLAY DEVICE WITH EXIT PUPIL MOVING FOR TRACKING VIEWER'S PUPIL - An image display device for optically displaying an image is disclosed. This device includes: a light source; an imaging-light generator converting light emitted from the light source, into imaging light representative of the image to be displayed to a viewer, to thereby generate the imaging light; and an exit-pupil controlling unit configured to control a position of an exit pupil of the image display device. The exit-pupil controlling unit includes: an electrically controllable element configured to diffract the imaging light incoming from the imaging-light generator, at an electrically-variable diffraction angle; and a controller configured to electrically control the diffraction angle of diffracted light emitted from the electrically controllable element, to thereby control the position of the exit pupil. | 12-02-2010 |
| 20100315585 | Electro-optical device and method for controlling color - The present invention provides an electro-optical device comprising a cell of polymer-stabilized blue phase (PSBP) liquid crystal under an electrical field and a method of controlling the reflection and transmission of an incident electromagnetic radiation such as visible light, by way of controlling the electrical field. The invention exhibits merits such as cost-effectiveness; simpler manufacturability due to the removal of requirements of polarizer and color filter; and fast switching, among others. | 12-16-2010 |
| 20110109870 | Optical Spectrum Splitting for Black Color Display - A display device is provided for reflecting a black color, as enabled by an optical splitting photonic liquid crystal waveguide. Sets of top and bottom electrodes are formed in a periodic pattern. A first dielectric layer overlies the set of bottom electrodes, made from a liquid crystal (LC) material with molecules having dipoles responsive to an electric field. A plasmonic layer, including a plurality of discrete plasmonic particles, is interposed between the sets of top and bottom electrodes, and is in contact with the first dielectric layer. A voltage potential is applied between the top and bottom electrodes, generating an electric field. Dipole local orientation and non-orientation regions are created in the liquid crystal molecules in response to the electric field, and a wavelength of light outside the visible spectrum is reflected in response to optical spectrum splitting of the incident light. | 05-12-2011 |
| 20110222017 | MULTI-FUNCTIONAL LIQUID CRYSTAL PARALLAX BARRIER DEVICE - A multi-functional liquid crystal parallax barrier device is a liquid crystal device mainly formed by two parallax barrier structures, namely, a double-view vertical strip parallax barrier and a multi-view slant-and-step parallax barrier, in which the two parallax barriers are disposed in the same horizontal display direction, so as to display a double-view 3D image and a multi-view 3D image, in addition to displaying a 2D image, through the control of an appropriate driving voltage and the use of a flat panel display screen. | 09-15-2011 |
| 20110285956 | Phase-type diffraction device, manufacturing method thereof and image pick-up apparatus - A phase-type diffraction device is provided, which includes a transparent substrate having a front surface and a rear surface, and a solidified liquid crystal layer formed on the front surface of the transparent substrate and constituted by a continuous film includes at least a liquid crystal compound. The solidified liquid crystal layer is constituted by first and second regions arranged periodically. The first region is optically anisotropic and the second region is optically isotropic. The first region differs in in-plane average refractive index from the second region. | 11-24-2011 |
| 20120086903 | POLARIZATION GRATINGS IN MESOGENIC FILMS - A polarizer including a polarization grating comprising a polarization sensitive photo-alignment layer and a liquid crystal composition arranged on said photo-alignment layer. An alignment pattern, corresponding to the polarization pattern of a hologram, is recorded in the photo-alignment layer, and the liquid crystal composition is aligned on the photo-alignment layer. | 04-12-2012 |
| 20120086904 | INFRARED-LIGHT REFLECTIVE PLATE AND INFRARED-LIGHT REFLECTIVE LAMINATED GLASS - An infrared-light reflective plate reflects an infrared-light ≧700 nm including a substrate of which fluctuation of retardation in plane at a wavelength of 1000 nm, Re(1000), ≧20 nm, on a surface of the substrate, at least two light-reflective layers, X1 and X2, formed of a fixed cholesteric liquid crystal phase, and, on another surface of the substrate, at least two light-reflective layers, Y1 and Y2, formed of a fixed cholesteric liquid crystal phase. The reflection center wavelengths of X1 and X2 are both λ | 04-12-2012 |
| 20120314181 | PATTERNED RETARDATION FILM - A patterned retardation film including a base substrate, a patterned resin layer and a liquid crystal layer is provided. The patterned resin layer having plurality of first areas and a plurality of second areas is disposed on the base substrate. The combination of the first and second areas is a grating-like stripe structure. The patterned resin layer includes an aligning micron structure. The aligning micron structure includes a plurality of first sub micron grooves and a plurality of second sub micron grooves respectively located in the first areas and the second areas. The liquid crystal layer is disposed on the patterned resin layer and aligned with the aligning micron structure. The liquid crystal layer disposed above the first areas provides a first phase retardation. The liquid crystal layer disposed above the second areas provides a second phase retardation. | 12-13-2012 |
| 20130300997 | Apparatus for reducing laser speckle - There is provided a device for reducing laser speckle comprising: a first transparent substrate; a second transparent substrate; an SBG sandwiched between said substrates; and transparent electrodes applied to said substrates. The first substrate is optically coupled to a laser source. The face of the second substrate in contact with the SBG is configured as an array of prismatic elements. | 11-14-2013 |
| 20140016081 | LIGHT DIFFRACTION ELEMENT AND OPTICAL LOW PASS FILTER - A light diffraction element comprising a transparent substrate and a first orientation layer that is formed on one surface of the substrate and includes anisotropic polymers and a first pattern of an orientation direction arranged periodically in a first direction along the primary plane of the substrate. The first pattern includes three or more small regions that are arranged in the first direction and in which the orientation direction of the polymers included in the first orientation layer are different from each other, and generates diffracted light as a result of interference between light passed respectively through the three or more small regions. | 01-16-2014 |
| 20140071394 | OPTICAL DIFFRACTION ELEMENT, OPTICAL PICKUP, AND OPTICAL DIFFRACTION ELEMENT MANUFACTURING METHOD - Provided is an optical diffraction element that restricts overall thickness of the element while maintaining strength. The optical diffraction element comprises a substrate; an orientation layer that is formed on one surface of the substrate and includes anisotropic polymers that are oriented perpendicular to or inclined relative to a surface of the substrate in at least a partial region of the orientation layer; and a liquid crystal layer formed on the orientation layer. The liquid crystal layer includes a plurality of orientation patterns that are formed periodically and include liquid crystal molecules having different orientation directions, and the orientation direction for at least some of the orientation patterns is perpendicular to or inclined relative to the surface of the substrate, as a result of aligning with the orientation of the orientation layer formed on a bottom surface of the orientation patterns. | 03-13-2014 |
| 20140211145 | CYCLOIDAL DIFFRACTIVE WAVEPLATE AND METHOD OF MANUFACTURE - A cycloidal diffractive waveplate ( | 07-31-2014 |
| 349202000 | For beam steering | 1 |
| 20120300168 | OPTICALLY TRANSPARENT CONDUCTORS - An optically transparent electrically conductive structure having: an optically transparent substrate; an optically transparent buffer and barrier layers; a plurality of optically transparent, two-dimensional electron gas (2-DEG) carrier layers disposed on the substrate. A barrier layer is disposed over a corresponding one of the carrier layers. One of the carrier layers comprises: a GaN channel layer and wherein the barrier layer is Al | 11-29-2012 |
