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Class 348/761 - Liquid crystal


Subclass of Class 348 - Television
Definition: Subject matter wherein the modulator comprises a medium
No. of patents: 130
Last issue date: 09/30/2008


1        
NumberTitleIssue Date
7429111Two-panel color management system
The invention provides a two-panel color management system for projection display applications, wherein color sequencing is accomplished using achromatic beam switching and static color separation. In a preferred embodiment, a liquid-crystal polarization switch alte...
09/30/2008
7390093Projection display with color segmented microdisplay panel
A single panel display may have discrete, dedicated segments associated with each of the primary colors. The segments may not be equally sized in some embodiments. The light from a light source may be split into color portions that are adjusted to accommodate to the...
06/24/2008
7391568Luminous intensity distribution control device and display having the same
A liquid crystal display apparatus including: a liquid crystal display element having a liquid crystal layer; a backlight apparatus arranged at one side of the couple of substrates of the liquid crystal display element; a polarizer arranged between the liquid crysta...
06/24/2008
7289098Display apparatus with adjustable backlight unit and control method thereof
A display apparatus having a backlight unit whose brightness is adjusted according to input image signals. The display apparatus processes input image signals in order for them to be appropriate to a display characteristic in an image signal processing unit and outp...
10/30/2007
7289153Scanning type image pick-up apparatus and a scanning type laser beam receive apparatus
The present invention has an object of realizing highly reliable search with high precision by obtaining a clear view image over a wide view. In particular, a reflection mirror is formed so as to correspond to an image pick-up element at a focus surface of a converg...
10/30/2007
7286764Reconfigurable modulator-based optical add-and-drop multiplexer
An optical add and drop multiplexer system comprising a first module for providing a first signal; a second module for providing a second signal; and a modulator for receiving a channel of the first signal at a first location, the first location configured to actuat...
10/23/2007
7277276Mounting structure of display panel
A mounting structure for attaching a display panel (200) to a cover (100) of a display, comprising: a plurality of attaching portions (210) provided at a circumference of the display panel (200), each of the attaching portions including a...
10/02/2007
7229177Restraining temperature rise in light exiting-side polarizer constituting liquid crystal light valve
Embodiments of the invention restrain temperature rise in a light exiting-side polarizer included in a liquid crystal light valve without limiting the quantity of light incident on the liquid crystal light valve and a projector that has a liquid crystal light valve ...
06/12/2007
7202917Projection type image display device
A light source, an image display panel including multiple pixel regions, each of which modulates light, light control means for focusing light from the light source onto associated pixel regions according to their wavelength ranges, and optical systems that form an ...
04/10/2007
7198376Illumination optical unit liquid crystal projector and production method of liquid crystal projector
A lighting optical unit having an optical system for irradiating light from a light-source lamp on a predetermined object in a uniform and/or convergent manner includes a reflector for reflecting light from the light-source lamp to provide converged light and an opt...
04/03/2007
7196687Swept illumination to reduce LCD lag in front and rear projection displays
Methods for illuminating the display area of a liquid crystal panel (13) are provided. Illumination light (17) is compressed into a stripe which is scanned across the display area in synchronization with the display's refresh cycle. In particular, the ...
03/27/2007
7177081High contrast grating light valve type device
A grating light valve has with a plurality of spaced reflective ribbons are spatially arranged over a substrate with reflective surfaces. The grating light valve is configured to optimized the conditions for constructive and destructive interference with an incident...
02/13/2007
7173760Luminous intensity distribution control device and display having the same
A liquid crystal display apparatus including: a liquid crystal display element having a liquid crystal layer between a couple of substrates; a backlight apparatus arranged at one side of the couple of substrates; a polarizer arranged between the liquid crystal displ...
02/06/2007
7167297Micromirror array
In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimi...
01/23/2007
7147332Projection system with scrolling color illumination
A projection system having an imager panel uses a scrolling prism assembly to illuminate different portions of the imager panel with light of different color simultaneously. The scrolling prism assembly can split light from a white light source into two or more diff...
12/12/2006
7133049Apparatus and method for driving liquid crystal display device
A display device includes a display panel having a plurality of pixels, each pixel including R, G B and W sub-pixels; a color information detecting unit receiving R, G and B sub-pixel video data for each pixel and outputting a detecting signal when one or two of the...
11/07/2006
7118226Sequential color recapture for image display systems
A method for transmitting light in an image display system includes generating a beam of light from a light source. The beam of light is directed at a first segment of an electronically-switchable filter. A first portion of the beam of light is accepted by the first...
10/10/2006
7097306Projection device and liquid crystal panel unit for use in the projection device
A projection device includes on a chassis a liquid crystal panel for irradiation with light from a light source, a polarizing plate opposing the liquid crystal panel, and an optical compensation sheet provided between the liquid crystal panel and the polarizing plat...
08/29/2006
7093941Video display apparatus and video display method
An APL detection unit detects the APL for each unit field time period of an input video signal, and a light source control data production unit produces, depending on the results of the APL detection, a light source control signal at a minimum level which can stably...
08/22/2006
7092055Liquid crystal device and electronic apparatus
Ambient light incident upon a polarizer 105 passes through a liquid crystal layer 103 and is then reflected by reflective films 116 via transparent electrodes 115. The reflected light passes again through the liquid crystal layer 103
08/15/2006
7066605Color recapture for display systems
A sequential color display system using a white light source to create a full color image projected onto an image plane. A dynamic filter, typically a series of moving dichroic filters, generates a series of primary colored light beams that are swept across the surf...
06/27/2006
7068372MEMS interferometer-based reconfigurable optical add-and-drop multiplexor
The interferometer comprises a beam splitter, a mirror and a phase modulator. The beam splitter splits a signal into a first portion and a second portion. The mirror reflects the first portion. The first portion includes an optical path length, which is fixed. The p...
06/27/2006
7054515Diffractive light modulator-based dynamic equalizer with integrated spectral monitor
An integrated device of the present invention comprises free-space optics, a bi-directional multiplexor/de-multiplexor, a diffractive light modulator, a beam splitter, an optical performance monitor, and a controller. The free-space optics collimate, transform and i...
05/30/2006
7049164Microelectronic mechanical system and methods
The current invention provides for encapsulated release structures, intermediates thereof and methods for their fabrication. The multi-layer structure has a capping layer, that preferably comprises silicon oxide and/or silicon nitride, and which is formed over an et...
05/23/2006
7042611Pre-deflected bias ribbons
A modulator for and a method of modulating an incident beam of light including means for supporting a plurality of active elements and a plurality of bias elements, each active and bias element including a light reflective planar surface with the light reflective pl...
05/09/2006
7040766Illumination optical system and projection-type display apparatus
The illumination optical system for guiding a light emitted from a light source to an object to be illuminated along an optical path includes a first reflecting mirror reflecting a part of a light which is moving in a forward direction along the optical path to move...
05/09/2006
7027202Silicon substrate as a light modulator sacrificial layer
An optical MEM device is fabricated with a patterned device layer formed on a silicon wafer. Preferably, the patterned device layer is patterned with plurality of ribbons and/or access trenches. The central portion of the ribbon is released from the silicon wafer us...
04/11/2006
7023606Micromirror array for projection TV
In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimi...
04/04/2006
7011414Highly efficient projection system and color scrolling method therefor
A highly efficient projection system and a color scrolling method are provided. In the color scrolling method, first, an optical splitter splits a beam emitted from a light source into individual color beams. Next, a rectangular light valve is disposed such that its...
03/14/2006
7012731Packaged micromirror array for a projection display
In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimi...
03/14/2006
7008063Use of distorting optics in imaging systems
An optical detection system for forming an image of a field of view in an object plane onto an image plane in which the electromagnetic radiation image is transmitted to a detector array at the image plane via an optical distorting element such as a reflector 11
03/07/2006
7006275Packaged micromirror array for a projection display
In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimi...
02/28/2006
6997564Digital projection display
A digital projection display includes a light source producing a light beam, and an integrator, an illumination lens, an illumination fold mirror, a light director, and a digital light modulator which sequentially process the light beam. The digital projection displ...
02/14/2006
6970074Wireless remote vehicle signal indicator for supplementing existing vehicle signal indicators
A remote motor vehicle signal indicator system consists of a transmitter coupled to a vehicle indication signal drive line. The transmitter wirelessly transmits a receiver activation signal corresponding to a vehicle indication signal of the vehicle indication signa...
11/29/2005
6967759Pulse width modulation sequence generation
A system and method for addressing and synchronizing a spatial light modulator (SLM) device and a scrolling color recovery (SCR) illumination system. This method applies all the colors to a single SLM simultaneously and recaptures light rejected by the color filters...
11/22/2005
6959978Sensor cleaning apparatus for ink-jet printer
A sensor cleaning apparatus for an ink-jet printer is capable of preventing a sensing error by wiping scattered ink from a surface of a sensor that is attached to a carriage. The sensor cleaning apparatus has a sensor wiper wiping the surface of the sensor, and a wi...
11/01/2005
6956878Method and apparatus for reducing laser speckle using polarization averaging
A method and apparatus for reducing speckle uses polarization averaging. A polarizing beam splitter divides a first polarized laser output into a second polarized laser output and a third polarized laser output. A plurality of mirrors creates an optical path differe...
10/18/2005
6956995Optical communication arrangement
An arrangement for optical communication comprises an optical coupler, an opto-electronic board, and an optical fiber. The optical fiber comprises a first refraction surface, a second refraction surface, and an internal reflector. The first refraction surface has a ...
10/18/2005
6953253Vehicle photosensing control system
A vehicle photosensing system includes a photosensor array that is disposed within the interior cabin of the vehicle and having a field of view forward through the windshield of the vehicle. The photosensing system further providing a control for either controlling ...
10/11/2005
6947613Wavelength selective switch and equalizer
A device comprising a light modulator including a plurality of elements wherein each element is selectively operable such that the plurality of elements are dynamically configurable to combine selected ones of a plurality of grating periods such that selected portio...
09/20/2005
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