Matches 1 - 31 out of 31


Match Document Document Title
9041897 High extinction ratio liquid crystal optical switch  
An optical switch for performing high extinction ratio switching of an optical signal includes a beam polarizing element and one or more optical elements. The optical elements are configured to...
8917375 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...
8755023 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...
8243216 Display  
A display device for displaying an image includes a display cell with a first cell wall and a second cell wall opposed to the first cell wall. The cell walls enclose a layer of a display medium...
8174645 Electronic display device comprising polarizing switch and pattern polarizer  
An electronic display device including a display unit for displaying an image and a light controller disposed in front of the display unit. The light controller includes a polarizing switch for...
7932962 Liquid crystal display device and defect repairing method for the same  
A liquid crystal display device includes a pixel electrode, a thin film transistor, a gate line electrically coupled to the pixel through the thin film transistor and a first auxiliary layer...
7877265 System and method for automated customer feedback  
A system and method for automated customer feedback allows for automatically collecting and analyzing customer feedback data regarding customer satisfaction and customer task completion with...
7564504 Phase plate and an optical data recording/reproducing device  
A phase plate having a reduced size and a reduced weight and having accurately parted regions while it has the same function as a conventional two-parted optical rotation plate and an optical data...
7298444 Reflection type liquid crystal display  
A reflective liquid crystal display disclosed herein includes a transistor substrate, a color filter substrate, a first lower electrode, a first upper electrode, a first transparent insulator, a...
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...
6992749 Flat panel display and a method of fabrication thereof  
Provided herein is a logic tree for steering electromagnetic energy. The logic tree includes a plurality of stages. The first stage includes a branch for directing energy to a similar branch in...
6954252 Optical switch including two integrated multiphase SLM's and a wave-plate the wave-plate providing an optical retardance of (2n+1)λ/4  
An optical switch uses a polarization insensitive spatial light modulator operating by a double pass through a liquid crystal cell. The switch includes two such modulators in a cross bar...
6950171 Liquid crystal color switch and method of manufacture  
This invention involves one kind of liquid crystal color light switch, made especially from cholesteric liquid crystals. By changing the voltage applied, the reflection wavelength of the color...
6870595 Optical filter device and method of making same  
The optical waveguide includes an optical waveguide layer, and a filter element including an ultraviolet curing liquid crystal layer disposed in a position which divides the optical waveguide...
6859573 Double pass arrangement for a liquid crystal device  
An optical device for rerouting and modifying an optical signal that uses a double pass through a liquid crystal modulator is disclosed. The optical device includes a first polarizer for providing...
6124920 Optical device and directional display  
An optical device includes a plurality of picture elements the phase and/or amplitude transmission of which vary in the lateral direction of the optical device reducing the level of diffraction...
5132822 Optical switch  
An optical switch for arbitrarily polarized light having low cross-talk is made in which an input beam is split into its TE (s wave) and TM (p wave) polarization components, the TM component is...
5128061 Phenyl-pyrimidine liquid crystal materials  
Substituted-hydrocarbylthio phenyl-pyrimidines are disclosed which exhibit smectic A phases over a wide temperature range and are useful in formulating smectic A compositions. The liquid-crystal...
5058999 Liquid crystal device having distinguishing means  
A liquid crystal device (10) includes at least two layers of encapsulated thermochromic, e.g., liquid crystal, material (14, 16) for providing a color response with respect to temperature, the...
4954288 Side chain liquid crystalline polymers exhibiting nonlinear optical response  
This invention provides novel side chain liquid crystalline polymers. An invention polymer exhibits nonlinear optical response, and has utility as a transparent nonlinear optical component in...
4917452 Liquid crystal optical switching device  
A pair of transparent trapezoidal prisms each having angled endfaces with the larger bases in juxtaposition with respect to each other forming an interface therebetween are provided with at least...
4913509 Fail-safe port for use with an optical fiber  
A fail-safe port apparatus includes a low loss liquid crystal optical switching device providing first and second light paths, the first path providing a failure, or default, mode path and the...
4813769 Liquid crystal wave division device  
A liquid crystal wave division device includes first and second polarization changing cells, the polarization changing cells utilize homogeneously aligned nematic liquid crystal material to effect...
4792212 Liquid crystal switching device  
A liquid crystal switching device includes first and second polarization reorienting cells disposed such that a polarized component of an incident light beam is incident normal to the cell.
4790633 Liquid crystal switching apparatus  
A liquid crystal switching apparatus includes a plurality of juxtaposed liquid crystal switching devices, each such device being capable of selectively reorienting the polarization of a polarized...
4784470 Optical switching device  
An optical switching device includes first and second polarization changing cells, the polarization changing cells utilize twisted nematic liquid crystal material to effect the change of...
4781426 Optical fiber collimator/switch including liquid crystal polarizing material  
A collimator includes a transparent base member defined by a planar surface and a spherical reflecting surface and includes an opening therein whereby an optical fiber may be terminated in the...
4779961 Polymers with pendant side chains exhibiting non-linear optical response  
This invention provides novel polyvinyl polymers with pendant side chains which exhibit nonlinear optical response. The polymers have utility as a transparent optical component of optical switch...
4768864 Liquid-crystal-based optical power limiter  
A broad-band optical light detector having a detector cell, a system for focusing light on the cell, and a liquid crystal positioned in the light path, the liquid crystal being prepared so that it...
4702557 Optical branching device using a liquid crystal  
The invention relates to an optical branching device which may be used as an optical isolator, circulator or switch. The device comprises two polarization-sensitive beam splitters. Each beam...
4278327 Liquid crystal matrices  
The improved electrooptical devices provide means for switching pluralities of polarized or unpolarized optical signals between input and output multimode single strand light guides. The...

Matches 1 - 31 out of 31