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8168271 |
Optical film assembly and display device
Microstructured optical films, assemblies of films including at least one microstructured optical film, and (e.g. illuminated) display devices including a single microstructured optical film or...
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8120718 |
Parallax barrier device for viewing three-dimensional images, method for fabricating the same and display apparatus including a parallax barrier device
A parallax barrier device includes a pair of transparent-electrode substrates each provided with a transparent electrode. A barrier light-shielding part and a light-transmitting part are formed in...
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8064035 |
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,...
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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...
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7982828 |
Polarization switching liquid crystal element and image display apparatus having the same
The present invention provides a polarization switching liquid crystal element 1 having TN liquid crystal 7 retained between two transparent substrates 2a and 2b for transmitting at least visible...
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7972017 |
Optical element having a diffractive layer and a relief pattern with concave and convex portions
An optical element, includes: a diffractive functional layer which diffracts at least part of incident light; and a grid formed on a first surface of the diffractive functional layer, the grid...
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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...
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7940457 |
Energy-efficient optoelectronic smart window
In an aspect, described herein is a dynamically controllable optoelectronic smart window which utilizes a diffraction grating for selective transmission or rejection of a specific region of the...
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7940340 |
Multilayer body with electrically controllable optically active systems of layers
A multilayer body (1) having an optically active first layer system (10) is described, in which case the first layer system (10) is an optically variable device (OVD), and the optical effect of the...
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7925124 |
Electro-optical tunable filter and manufacturing process
An electro-optical filter made of a support in which an optical guide with a diffused channel waveguide and of a cover, that are created in borosilicate glass, and which includes a gap obtained by...
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7907331 |
High speed beam steering
The use of spatial light modulators to steer light beams is disclosed. A dual frequency liquid crystal spatial light modulator can be controlled so as to form a blazed phase grating thereon that...
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7868952 |
Parallax barrier device, method for fabricating the same and display apparatus including a parallax barrier device
A parallax barrier device includes a pair of transparent-electrode substrates each provided with a transparent electrode. A barrier light-shielding part and a light-transmitting part are formed in...
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7859640 |
Method and apparatus for spatially modulated electric field generation and electro-optical tuning using liquid crystals
A variable optical device for controlling the propagation of light has a liquid crystal layer (1), electrodes (4) arranged to generate an electric field acting on the liquid crystal layer, and an...
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7787063 |
Optical element and optical pickup
On one side of a liquid crystal layer, a first electrode is provided, and, on the other side of the liquid crystal layer, a second electrode, composed of a plurality of individual electrodes, and a...
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7778508 |
Image display optical system, image display unit, illuminating optical system, and liquid crystal display unit
Image display optical systems are disclosed that extend the angle of view longitudinally and transversely while saving space. The image display optical system includes a prism-shaped substrate...
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7764354 |
Multi-layer diffraction type polarizer and liquid crystal element
A multi-layer diffraction type polarizer is formed by laminating at least two polarizing diffraction gratings each having a birefringent material which straightly transmits incident light having a...
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7755014 |
Optical pickup device
An optical pickup device is equipped with a diffraction element (8) that includes liquid crystal, two transparent electrodes sandwiching the liquid crystal, and a liquid crystal control portion...
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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...
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7722194 |
Optical element having a reflected light diffusing function and a polarization separation function and a projection display device
An optical element, includes: a diffractive functional layer which diffracts at least part of incident light; and a grid formed on a first surface of the diffractive functional layer, the grid...
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7710535 |
Liquid crystal lens element and optical head device
A liquid crystal lens element having a lens function capable of stably correcting spherical aberration containing a power component corresponding to focus change of incident light according to the...
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7710536 |
Liquid crystal diffraction lens element and optical head device
A liquid crystal diffraction lens element and an optical head device, which can switch focal lengths of both of outgoing light and returning light by a single element, are provided. The liquid...
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7697109 |
Stereoscopic image conversion panel and stereoscopic image display apparatus with liquid crystal lens having periodically fluctuating lower voltage applied to lower parallel electrodes and same voltage applied to upper parallel electrodes perpendicular to lower electrodes
In a stereoscopic image conversion panel for enhancing display quality and a stereoscopic image display apparatus having the panel, the stereoscopic display panel includes lower and upper...
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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,...
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7675593 |
Display pixel using electroactive polymer and display apparatus employing the same
Provided are a display pixel using an electroactive polymer and a display apparatus employing the display pixel. The display pixel includes: an electroactive polymer layer, of which shape and/or...
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7633671 |
High speed beam steering
The use of spatial light modulators to steer light beams is disclosed. A dual frequency liquid crystal spatial light modulator can be controlled so as to form a blazed phase grating thereon that...
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7630027 |
Display device having a metal polarizing layer disposed between a first substrate and a common electrode which itself is disposed between a liquid crystal layer and the first substrate
The invention is directed to the higher contrast in a display device with a lighting device as a front light and a reflective LCD. A lighting device is disposed, being opposed to a front surface of...
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7623291 |
Polarized diffractive filter and layered polarized diffractive filter
A polarized diffractive filter contains cyclic concave/convex portions formed as a diffractive grating on a transparent substrate. The concave portions are filled with an optical material. At least...
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7618690 |
Polymerizable liquid crystal compound, liquid crystal composition, optical anisotropic material and optical element
A liquid crystal compound represented by the formula CH2═CR1—COO-(L)k-E1-E2-E3-E4-R2 wherein R1: a hydrogen atom or a methyl group; R2: a C1-8 alkyl group; k: 0 or 1; L: —(CH2)pO— or —(CH2)q...
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7605882 |
Optimizing performance parameters for switchable polymer dispersed liquid crystal optical elements
Described herein are the materials, mechanisms and procedures for optimizing various performance parameters of HPDLC optical devices in order to meet differing performance requirements. These...
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7551258 |
Patterned light modulating device
A repeated pattern layer having areas for imparting different electro-optic characteristics to a light modulating device is disclosed. The repeated pattern is arranged so that any pixel area formed...
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7542669 |
Diffraction display device and viewfinder display device
A diffraction display device includes a diffraction optical element that comprises a diffraction display portion and a non-display portion disposed between a pair of substrates, and an illuminating...
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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...
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7499608 |
Apparatus and method for optical switching with liquid crystals and birefringent wedges
An optical switch includes an optical waveguide to route an input optical beam. At least one polarization switch receives the input optical beam from the optical waveguide. At least one...
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7499138 |
Panel and a liquid crystal display including the panel
An LCD according to the present invention includes lower and upper panels facing each other and a liquid crystal layer interposed therebetween. The upper panel includes a black matrix formed on an...
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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...
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7486350 |
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...
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7436471 |
***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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