Quotables
"I hate what they've done to my child...I would never let my own children watch it. "
Vladimir Zworykin, television pioneer ; Talking about an invention in which he played a critical role.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8134770 | Reducing speckle pattern in display images A display system includes a coherent light source that can emit a coherent light beam, a de-speckling device configured to distort a wavefront of the coherent light beam to produce a distorted coherent light beam, and a two-dimensional array of light modulators that... | 03/13/2012 |
| 7835057 | Method of calibrating light delivery systems, light delivery systems and radiometer for use therewith In a method of calibrating a light delivery device (10) having a solid state light source (12), for example comprising LEDs of an LED array, and an intensity control unit (16) comprising LED array driver and a dimmer module for generating a cont... | 11/16/2010 |
| 7830579 | Stereoscopic-image display apparatus Mediums that are arranged opposite to an elemental-image display unit, that form two lens arrays having different principal planes together with substrates, and that switches a polarization direction of incident light corresponding to applied voltage, thereby making... | 11/09/2010 |
| 7777930 | Electro-optical light control element and display having a control medium with an optically isotropic phase The invention relates to an electro-optical light control element and to electro-optical displays and display systems, e.g. television screens and computer monitors, which contain elements of this type. The inventive light control elements contain a mesogenic contro... | 08/17/2010 |
| 7633666 | ZScreen® modulator with wire grid polarizer for stereoscopic projection A projection design configured for use with a projector having a projector lens is provided. The device includes at least one pi-cell or pi-cell electro-optical modulator in combination with a wire grid polarizer mounted proximate the pi-cell(s). The design may incl... | 12/15/2009 |
| 7450289 | Low power driver circuit for a polarization scrambler A driver circuit for a polarization scrambler (11) having a number of electrodes (17) is characterized in that the driver circuit comprises at least one pulse source (18) emitting a pulsed signal at a fundamental frequency, that the driver circu... | 11/11/2008 |
| 7443440 | Color separator and imager A color separator includes a polarization converting section for converting an incoming light ray into a linearly polarized light ray such that the polarization direction of the linearly polarized light ray is selectable from a number of predetermined directions, an... | 10/28/2008 |
| 7433558 | Methods for optical isolation in high power fiber-optic systems Methods for optical isolation in high peak power fiber-optic systems prevent damage to a facet within a fiber-optic isolator caused by back-reflected light from, for example, an optical amplifier. Preventing damage to the facet may include expanding a mode area of t... | 10/07/2008 |
| 7426070 | Method and device for attenuating light as a function of intensity An intensity-dependent light modulating device and method involves light successively passing through a polarizer, a first phase retardation plate and a first light modulator. The light then strikes a mirror and then passes once again through the light modulator and... | 09/16/2008 |
| 7407817 | Surface plasmon resonance sensors and method for detecting samples using the same Disclosed is an optical sensing device including a source unit providing a beam of light with continuously modulated phase retardation between p- and s-polarization components of the light by employing a LCM; a reference unit receiving a first part of the light to p... | 08/05/2008 |
| 7405864 | Dimming device and display device incorporating the same A dimming device is provided by using a material which is capable of transitioning between a metallic reflection state and a transmitting state. The dimming device has a layered structure including a first layer and a second layer, such that the light reflectance of... | 07/29/2008 |
| 7382512 | Resistivity phase change material Various devices and methods employing a resistive phase change material are disclosed. ... | 06/03/2008 |
| 7375889 | Apparatus and method for controlling polarization in an optical communications medium A method for resetting a polarization controller includes determining that the phase magnitude is associated with a first range of phase angles and generating a first control signal having a first characteristic if the phase magnitude is increasing, and generating t... | 05/20/2008 |
| 7376291 | Free space optical isolator with stacked parallel polarizers The present invention provides low cost methods and apparatuses for filtering out polarized light reflections in a free space optical isolator. Multiple polarizers having relatively poor extinction ratios can be stacked together as polarizer assemblies having higher... | 05/20/2008 |
| 7376358 | Location specific optical monitoring An optical spike is generated at an arbitrarily selected location within an arbitrary optical link. The optical spike is generated by deriving a spike signal having a plurality of components, and launching the spike signal into the a transmitter end of the optical l... | 05/20/2008 |
| 7355679 | Lithography arrangement and procedure that produces a lithography A lithography arrangement and lithographic method is described which permits exposure of a substrate with radiation simultaneously with good intensity and contrast. A means for generating electromagnetic radiation and for directing the electromagnetic radiation onto... | 04/08/2008 |
| 7343100 | Optical communications based on optical polarization multiplexing and demultiplexing This application describes techniques for optical multiplexing and demultiplexing in optical communication systems based on polarization multiplexing of different signal channels. ... | 03/11/2008 |
| 7339636 | Color display and solar cell device A color display and solar cell device (100, 300, 500), and methods for fabricating and operating the device. The device (100, 300, 500) includes a transparent light source (140, 340, 540) located behind a liquid crystal display (105, 305, 505... | 03/04/2008 |
| 7336323 | Liquid crystal filter with tunable rejection band An optical wavelength filter uses birefringence and polarization to discriminate and block a wavelength stop band. Birefringent elements, each having a fixed retarder and a liquid crystal, are placed along the signal path with the fast and slow axes in each pair bei... | 02/26/2008 |
| 7327913 | Coherent optical detector and coherent communication system and method An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A thir... | 02/05/2008 |
| 7324257 | Low bias drift modulator with buffer layer The invention relates to an electro-optic modulator structure containing an additional set of bias electrodes buried within the device for applying bias to set the operating point. Thus the RF electrodes used to modulate incoming optical signals can be operated with... | 01/29/2008 |
| 7324760 | Apparatus and method for phase synchronization control in RZ optical transmitter An optical RZ transmitter comprises an optical signal source and a pair of electro-optical modulators in tandem, one arranged to receive a NRZ electrical data signal and the other a clock signal at the data rate of the data signal. The phase difference between the d... | 01/29/2008 |
| 7324256 | Photonic oscillator A photonic oscillator includes an optical transceiver that serves the dual purpose of detecting a feedback RF lightwave signal carried on a laser beam and electrically filtering the RF lightwave signal to modulate the RF lightwave signal in accordance therewith, to ... | 01/29/2008 |
| 7321734 | Digital synthesis of readily compensated optical signals A method and system for mitigating effects of dispersion in an optical link. A pair of digital sample streams are synthesized representing a target optical E-field having a spectrum selected such that the convolution of the spectrum with itself yields a signal havin... | 01/22/2008 |
| 7317845 | Optical modulator having reduced bandwidth requirements and method of operation thereof An optical modulator is overdriven to increase its nonlinearity and therefore improve its response as it pertains to differential phase shift keyed (DPSK) transmission and a method of operating the same. In one embodiment, the MZM includes an MZM drive circuit coupl... | 01/08/2008 |
| 7312917 | Variable focal length electro-optic lens A variable focal length lens includes a plurality of layers of an electro-optic material and alternating stacked substantially transparent conductor layers and substantially transparent resistor layers. Each layer of electro-optic material is sandwiched between a se... | 12/25/2007 |
| 7312913 | Imaging light source with polarization and color recovery The present invention provides a polarized colored light source for a display system in which light of other polarization states and colors are recycled. The color can be scrolled synchronously with a display. In one embodiment, the invention includes a tunnel havin... | 12/25/2007 |
| 7308171 | Method and apparatus for optical isolation in high power fiber-optic systems Methods and apparatus for optical isolation in high peak power fiber-optic systems prevent damage to a facet within a fiber-optic isolator caused by back-reflected light from, for example, an optical amplifier. Preventing damage to the facet may include expanding a ... | 12/11/2007 |
| 7295748 | Variable optical attenuator with wavelength dependent loss compensation The invention relates to compensating for the wavelength dependent loss (WDL) in a variable optical attenuator (VOA) system by using a chromatic dispersion wedge, which is inserted between the mirror and the lens. Different wavelength components, e.g. shorter blue a... | 11/13/2007 |
| 7288770 | Real-time UV spectroscopy for the quantification gaseous toxins utilizing open-path or closed multipass white cells The present invention relates, generally, to a portable system for UV spectroscopy capable of the detection and quantification of chemicals from either open air environments or by insertion of a sample using a sample chamber. The system is capable of simultaneously ... | 10/30/2007 |
| 7286764 | Reconfigurable 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 |
| 7277646 | Duobinary optical transmitter An optical transmitter for generating an optical signal includes: a precoder for coding an electrical signal of binary data; a continuous-wave (CW) light source for generating a continuous wave light; an optical phase modulator for modulating the phase of an optical... | 10/02/2007 |
| 7277603 | Integrated optical waveform modulation A method of modulating an optical carrier. A target carrier modulation is computed based on an input data signal. An effective length of an optical modulator is then controlled based on the target carrier modulation. ... | 10/02/2007 |
| 7272271 | Electro-optical integrated transmitter chip for arbitrary quadrature modulation of optical signals An optical device includes, a first Mach-Zehnder modulator that produces a first output, and a second Mach-Zehnder modulator which produces a second output. A splitter couples the first and second Mach-Zehnder modulators. A combiner combines the first and second out... | 09/18/2007 |
| 7263250 | Optical switch using polarization beam splitters A polarization based optical switch capable of redirecting light signals to a plurality of different output locations. The optical switch utilizes polarization beam splitters to separate each optical channel into multiple polarization portions. Reflection members ar... | 08/28/2007 |
| 7251410 | Variable optical attenuator and optical filter A variable optical attenuator includes an optical fiber on an incident side and an optical fiber on an emission side; a polarization rotator element that includes a liquid crystal layer and a pair of substrates that are arranged in such a manner that the liquid crys... | 07/31/2007 |
| 7244028 | Laser illuminated projection displays A projection video display includes at least one laser for delivering a light beam. The display includes a beam homogenizer and a condenser lens. A scanning arrangement is provided for scanning the light in beam in a particular pattern over the condenser lens in a m... | 07/17/2007 |
| 7245788 | Optical modulator The present invention provides a cost-saving and space-saving optical modulator enabling application of modulation signals with high phase difference accuracy without using a separate component for generating a phase difference outside of the optical modulator, when... | 07/17/2007 |
| 7224906 | Method and system for mitigating nonlinear transmission impairments in fiber-optic communications systems The present invention relates to a method for transmitting data. An optical pulse stream comprising a plurality of return-to-zero optical pulses is prepared by modulating a phase of light output by an optical source to thereby encode data from a data source. The lig... | 05/29/2007 |
| 7218451 | Integrated optical multiplexer and demultiplexer Optical multiplexers and demultiplexers are provided. In one implementation an apparatus is provided. The apparatus includes a first laser diode pair, a second laser diode pair, a polarization rotator coupled between the first and the second laser diode pairs, and a... | 05/15/2007 |
