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| Number | Title | Issue Date |
| 7982848 | Variable transmission light quantity element with dielectric layers and projection display A variable light transmission device and projection display apparatus which does not generate vibrations and noises but is superior in light blocking property to a variable aperture using polymer-dispersed liquid crystal and can reduce a color change of a projected ... | 07/19/2011 |
| 7944544 | Liquid crystal device having a diffraction function layer that includes a flat portion and a non-flat portion with a grid disposed in the non-flat portion 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 ar... | 05/17/2011 |
| 7728949 | Electro-active lens Embodiments of the present invention relate to a cholesteric liquid crystalline material which may be usable in an electro-active element for providing fail safe operation, polarization insensitivity, low electrical power consumption requirements, and a small number... | 06/01/2010 |
| 7692759 | Polarization gratings in mesogenic films A polarization grating comprising a polarization sensitive photo-alignment layer (2) and a liquid crystal composition (3) arranged on said photo-alignment layer is provided. An alignment pattern, corresponding to the polarization pattern of a hologram,... | 04/06/2010 |
| 7511796 | Film and optical anti-counterfeiting element The invention concerns a film, in particular an embossing film, a laminating film or a sticker film, and an optical security element. The film has a carrier layer and a replication layer. The film also has a layer of a liquid crystal material, which is applied to th... | 03/31/2009 |
| 7492439 | Liquid crystal devices especially for use in liquid crystal point diffraction interferometer systems Liquid crystal point diffraction interferometer (LCPDI) systems that can provide real-time, phase-shifting interferograms that are useful in the characterization of static optical properties (wavefront aberrations, lensing, or wedge) in optical elements or dynamic, ... | 02/17/2009 |
| 7436471 | Display device, viewing angle control device, electronic display device, and multiple image display device A display device includes: a main LCD; a SW LCD, disposed on an optical path of light transmitting through the main LCD, for electrically switching a visible image between a single image display mode and a multiple image display mode; a first polarizer; and a second... | 10/14/2008 |
| 7423719 | Optical film using diffraction grating and display device using the same An optical diffusion film comprises a plurality of diffraction grating cells formed on a substrate, each cell comprising a plurality of curved gratings disposed in parallel with each other and containing the same profile. Such film can be manufactured by embossing, ... | 09/09/2008 |
| 7420733 | Electrically switchable polymer-dispersed liquid crystal materials including switchable optical couplers and reconfigurable optical interconnects A new photopolymerizable material allows single-step, fast recording of volume holograms with properties that can be electrically controlled. Polymer-dispersed liquid crystals (PDLCs) in accordance with the invention preferably comprise a homogeneous mixture of a ne... | 09/02/2008 |
| 7420737 | Reconfigurable zone plate lens A reconfigurable zone plate lens is disclosed. Some embodiments may include a central annular element having a first a first circumference centered about a central axis. Embodiments may also include a plurality of concentric annular elements of increasing circumfere... | 09/02/2008 |
| 7417706 | Beam steering device A beam steering device uses a liquid crystal with an array of back electrodes. Voltages are applied to the array to cause a desired phase distribution across the array, the distribution being selected to steer a beam incident upon the array into a desired direction.... | 08/26/2008 |
| 7417796 | Wavelength discrimination filter for infrared wavelengths An optical comb filter has polarizers placed before and after two or more birefringent elements, each having a fixed retarder and an aligned tunable liquid crystal. The birefringent elements are equal in birefringence and thickness and are tuned in unison. Wavelengt... | 08/26/2008 |
| 7382360 | Methods and systems for changing the appearance of a position sensor with a light effect Methods and systems are provided for producing a light effect on a touchpad or other position sensor. In one aspect, a position sensor for detecting a position of an object suitably includes a sensor, a light source, and a light conductor at least partially located ... | 06/03/2008 |
| 7372547 | Process and apparatus for achieving single exposure pattern transfer using maskless optical direct write lithography The present invention provides methods and apparatus for accomplishing a phase shift lithography process using a off axis light to reduce the effect of zero order light to improve the process window for maskless phase shift lithography systems and methodologies. A l... | 05/13/2008 |
| 7362485 | Image display medium, image writing device, and image forming apparatus An image display medium comprising: a display layer; a pair of substrates that retain the display layer therebetween, with at least parts of the pair of substrates configuring a frame portion to which an electrical connection connector for electrical connection to t... | 04/22/2008 |
| 7343064 | Optical switch and optical add/drop multiplexer To provide a wavelength-selection optical switch able to select a light with a certain wavelength and an optical add/drop multiplexer using the same. An optical switch comprising: a silicon substrate; a glass substrate arranged to face a surface of the silicon subst... | 03/11/2008 |
| 7342254 | Light-emitting device having a diffractive film on its light-output face and manufacturing method therefor Affords efficiently and at low cost practical, tiny light-emitting devices having an optically diffractive film on their light-output face. A light-emitting device (LD) includes a diffractive film (DF) formed on its light-output face; the diffractive film includes a... | 03/11/2008 |
| 7339638 | Micro-lens substrate, liquid crystal display element having same, and projection-type liquid crystal display device A liquid crystal panel unit (2) includes, on its side from which light enters, a micro-lens substrate (1) having: a first micro-lens array including a first lens (5) for converging, for converging, on aperture sections (17R•17Gâ€... | 03/04/2008 |
| 7336411 | Spatial light modulator and display device A spatial light modulator is disclosed that can be fabricated easily and is able to prevent degradation of a contrast ratio by suppressing a fringe effect. The spatial light modulator includes a light transmission substrate, a liquid crystal layer, a pixel array, an... | 02/26/2008 |
| 7330178 | Display-input apparatus for a multi-configuration portable device A portable electronic device includes a display-input apparatus (108) for displaying alternate character sets, in correspondence with a selected mode of operation of the device. The display-input apparatus uses first and second cholesteric display layers (... | 02/12/2008 |
| 7327508 | Display device using light modulator and having improved numerical aperture of after-edge lens system A display device using a light modulator and having an improved numerical aperture (NA) of an after-edge lens system is disclosed. The display device includes an illumination lens, a diffractive light modulator, an NA improvement unit, a filter system and a projecti... | 02/05/2008 |
| 7324690 | Metal mask for light intensity determination and ADC calibration An apparatus and method for controlling gain characteristics in a CMOS imager and for calibrating light intensity and analog to digital conversion in a pixel array. A mask with varying sized apertures is provided over pixels of an array outside the active area for u... | 01/29/2008 |
| 7321412 | Liquid crystal display apparatus having alignment control for brightness and response A liquid crystal display apparatus including a pair of substrates having electrodes and vertical alignment layers. A liquid crystal having a negative anisotropy of dielectric is inserted between the substrates. Each substrate has linearly arranged alignment control ... | 01/22/2008 |
| 7317281 | Method for manufacturing electrooptical device and apparatus for manufacturing the same, electrooptical device and electronic appliances The present invention provides a method of manufacturing an electrooptical device including a first member on which an electrooptical element is disposed, and a second member covering the electrooptical element. The method includes (a) feeding an adhesive material t... | 01/08/2008 |
| 7315345 | Electro-convective diffractive device A method for producing a diffraction grating is provided. First, a mixture including nematic liquid crystal, dopant, and polymerizable precursor is introduced between two electrically conductive substrates having alignment layers for inducing orientation of the liqu... | 01/01/2008 |
| 7311951 | Phoretic display A phoretic display having a liquid crystal suspension medium and a relief structure alignment layer comprising a relief structure surface incorporating a plurality of indentations. The relief structure alignment layer is adapted to generate a preferred alignment of ... | 12/25/2007 |
| 7301601 | Optical switching device using holographic polymer dispersed liquid crystals A thin holographic optical switch used in a liquid crystal display device contains opposing transparent substrates transparent electrodes between the substrates and a diffraction grating between the electrodes. The diffraction grating contains regions of transparent... | 11/27/2007 |
| 7283291 | High speed beam steering/field of view adjustment The use of spatial light modulators to steer light beams and/or vary a field of view is disclosed. A dual frequency liquid crystal spatial light modulator can be controlled so as to form a blazed phase grating thereon that effects desire deflection of incident light... | 10/16/2007 |
| 7265882 | Switchable polymer-dispersed liquid crystal optical elements Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches... | 09/04/2007 |
| 7255448 | Pixelated color management display A display system includes a light source, a spatial light homogenizer, and imaging optics. The spatial light modulator has a plurality of modulator pixels. The display system also includes a pixelated plate illuminated by the light source. The pixelated plate has a ... | 08/14/2007 |
| 7253873 | Dynamic gain equalizer A dynamic gain equalizer (1) comprises a spectroscope (4) for separating a light entering from an incoming end, a liquid crystal optical switch (5) for receiving spectral components separated by the spectroscope (4), and a lens system ( | 08/07/2007 |
| 7247356 | Privacy screen for a display A privacy screen for a display (e.g., a LCD) includes having a polarizing film and a birefringent film is described. The privacy screen transmits substantial amounts of light emanating from the display in an orthogonal (or near-orthogonal) direction while not transm... | 07/24/2007 |
| 7245329 | Substrate for a liquid crystal display device comprising second thin-film transistors for applying a voltage to pixel electrodes for polymerizing the monomer A substrate for a liquid crystal display device comprises a TFT substrate for holding opposing substrates arranged opposed to each other as well as a liquid crystal composition obtained by mixing a monomer into liquid crystals. A plurality of bus lines are formed on... | 07/17/2007 |
| 7236444 | Wavefront aberration correcting device and optical pickup equipped with the same An object of the present invention is to provide a wavefront aberration correcting device comprising a liquid crystal device that maximizes transmittance and minimizes light transmittance fluctuations even when the liquid crystal is driven by voltage. Disclosed is a... | 06/26/2007 |
| 7227688 | Apparatus for applying optical gradient forces An apparatus and method for manipulating small dielectric particles. The apparatus and method involves use of a diffractive optical element which receives a laser beam and forms a plurality of light beams. These light beams are operated on by a telescope lens system... | 06/05/2007 |
| 7227540 | Image display unit and method of manufacturing the same An MEM unit according to the invention comprises an Si (silicon) substrate 1 having such a thickness as to transmit a visible light therethrough, an insulating layer 2 formed in contact with the upper surface of the Si substrate 1, a lower elect... | 06/05/2007 |
| 7226172 | Illumination attenuation system Provided are several apparatus and methods to attenuate illumination light in a projector. Illumination light may be attenuated by directing polarized light toward a liquid crystal (LC) attenuation panel. The panel selectively modulates some, all, or none of the pol... | 06/05/2007 |
| 7215850 | Waveguide plate and process for its production and microtitre plate A waveguide plate and a process for making the waveguide plate with a plate-like glass substrate (1), carrying a waveguiding layer (2), with at least one coupling grating on the surface carrying said waveguiding layer (2), which coupling grating... | 05/08/2007 |
| 7209097 | Optical device and three-dimensional display device An optical device includes a transparent material layer having a desired curved surface configuration, a layer including a variable refractive index material having a dielectric constant anisotropy, at least two transparent electrodes arranged to sandwich the transp... | 04/24/2007 |
| 7209212 | Tunable optical integrated element using liquid crystal as active layer The present invention discloses a tunable optical integrated element using liquid crystal as an active layer, which is applied to filters, couplers or optical add/drop multiplexer. The present invention includes a layer of liquid crystal as an active layer, a first ... | 04/24/2007 |
