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| Number | Title | Issue Date |
| D654959 | Set of playing cards | 02/28/2012 |
| D654479 | Loudspeaker driver suspension | 02/21/2012 |
| 7995915 | Method and apparatus for testing transmission lines normally propagating optical signals Portable apparatus for measuring parameters of optical signals propagating concurrently in opposite directions in an optical transmission path between two elements, at least one of the elements being operative to transmit a first optical signal (S1) only if i... | 08/09/2011 |
| 7957436 | Laser for providing pulsed light and reflectometric apparatus incorporating such a laser A laser for generating laser light pulses comprises a cavity containing an active optical gain medium (102) and a spectral filtering device (104), a delay device (110) for delaying light by a predetermined delay time (Δt), means (106) fo... | 06/07/2011 |
| 7920253 | Polarization optical time domain reflectometer and method of determining PMD In a method of measuring cumulative polarization mode dispersion (PMD) along the length of a fiber-under-test (FUT), a polarization-sensitive optical time domain reflectometer (POTDR) is used to inject into the FUT plural series of light pulses arranged in several g... | 04/05/2011 |
| 7904039 | Multi-user adaptive array receiver and method An array receiver which reduces complexity and cost by exploiting multiuser information in signals received from a plurality of transmitting users preprocesses (40) samples of antenna signals (x1, x2 . . . , xN) from the anten... | 03/08/2011 |
| 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 |
| 7768177 | Compact size electromechanical translation apparatus A linear electromechanical translation apparatus is provided of the type comprising first and second clamps fixed to a support, first and second elongate movable members each extending through one of the clamps, and an extension actuator connected between the movabl... | 08/03/2010 |
| 7719667 | Estimating loss of mechanical splices interconnecting optical fibers, and connector installation tool First and second optical fibers are spliced by a mechanical splice-based connecting device having a portion whereby light leaked from the splice can leave the connecting device. A reference power level (PREF) of light leaked while only the first fiber is ... | 05/18/2010 |
| 7710552 | Method and apparatus for extracting light from an optical waveguide Apparatus for extracting light from an optical waveguide (12) by bending the waveguide to such an extent that a portion of any light propagating in the waveguide leaks therefrom comprises a bending unit (10) for bending a portion of the waveguide in de... | 05/04/2010 |
| 7623086 | Wireless communication systems and methods and transmitter units for use therein A wireless communication system includes a portable, typically hand-held transmitter which includes RF absorbing material and/or one or more dissipative parasitic antennas for reducing RF fields in close proximity to the operator to such an extent as to substantiall... | 11/24/2009 |
| 7502112 | Colorimetric device and colour determination process A hand-held colorimetric device (101) suitable for use by blind or color-blind individuals to determine the color of a surface-under-test (SUT), for example of a fabric, has an aperture (110) which, in use, is covered by the SUT (113) whose colo... | 03/10/2009 |
| 7426021 | Interferometric optical analyzer and method for measuring the linear response of an optical component An interferometric optical analyzer apparatus comprises a light source, an interferometer and a detection system for determining the linear response, and subsequently any optical parameter, of one or more optical elements using substantially unpolarized light. In on... | 09/16/2008 |
| 7382810 | Widely-tunable laser apparatus A widely-tunable laser apparatus comprises a plurality of tunable lasers having different ranges that overlap to encompass a desired operating range of wavelengths (for example from 1250 nm to 1650 nm) of the widely-tunable laser apparatus. The tunable lasers are tu... | 06/03/2008 |
| 7335901 | Method of calibrating light delivery systems, light delivery systems and radiometer for use therewith A light delivery device (10) having a light source (12) and a variable aperture unit (18) is temporarily connected by a light guide (24; 24, 26) to a radiometer (38) for detecting irradiance of the delivered light. The light delive... | 02/26/2008 |
| 7331699 | Light source unit A light source unit comprises a support for supporting a lamp unit, e.g., a gas discharge lamp or the like. The lamp unit has longitudinal and transversal fiduciary surfaces and the support has guide rails for guiding the lamp unit as it is inserted transversely wit... | 02/19/2008 |
| 7236600 | Transmission of power and/or signalling between an audio distribution unit and a plurality of remote audio transducers A remote-controlled audio system comprises sets of loudspeakers (14A-14D) connected to power amplifier units (22A-22D) in an audio distribution unit (10) to which several audio sources, such as a compact disc unit, a tape deck, etc... | 06/26/2007 |
| 7227645 | Method and apparatus for measuring polarization mode dispersion Apparatus for measuring polarization mode dispersion (PMD) of a device, e.g. a waveguide, comprises a broadband light source (10,12) for passing polarized broadband light through the device (14), an interferometer (20) for dividing and recombini... | 06/05/2007 |
| 7210568 | Apparatus for organizing articles traveling on a conveyor In laner apparatus for automatically arranging articles into lanes on a conveyor, for example for packaging or further processing, the articles are fed onto a conveyor upstream of a fence that extends at an acute angle to the direction of travel of the conveyor. The... | 05/01/2007 |
| 7187861 | Method and apparatus for testing optical networks An instrument for measuring bidirectional optical signals propagating in an optical transmission path between elements one of which will not transmit if continuity of the transmission path is not maintained, for example a branch path between a central offices optica... | 03/06/2007 |
| 7167655 | Measurement system for wide dynamic range optical power meter A measurement system for wide dynamic range operation in optical power measurement applications is disclosed. The system provides amplification over a wide dynamic range without glitch, signal loss or transient effect during range switch. This is achieved by combini... | 01/23/2007 |
| 7163769 | Photosensitive material and process of making same A photosensitive material, suitable for image-wise recording, e.g., holographic recording of data or other information, comprises an organic species in an organic-inorganic matrix, the organic species comprising a material having a refractive index which changes upo... | 01/16/2007 |
| 7151789 | External-cavity lasers An external-cavity laser, suitable for producing a coherent and highly-polarized optical emission, particularly at communication wavelengths, is enabled by a novel wavelength selective element based on a waveguide technology that supports a long-range plasmons polar... | 12/19/2006 |
| 7130507 | Light source unit for use with a light guide and lamp mounting arrangement A light source unit, for supplying light via a light guide to a remote location, comprises a support for supporting a light source and a light guide in a prescribed alignment relative to each other, the support comprising a first part for supporting the light source... | 10/31/2006 |
| 7116848 | Optical spectrum analyzer using a diffraction grating and multi-pass optics A polarization independent optical spectrum analyzer comprises a diffraction grating, input and output slit means and polarization-maintaining multi-pass optics for directing a light beam to and fro across the diffraction grating while maintaining its linear state o... | 10/03/2006 |
| D523806 | Light source system | 06/27/2006 |
| 7050004 | Multiple frequency antenna An antenna having a resonant structure, comprises an antenna element (11) and an adjacent electrode (17A) and control means (22,25) for changing a resonance frequency of the antenna element. The control means may comprise a conductive membrane (... | 05/23/2006 |
| 7043134 | Thermo-optic plasmon-polariton devices A waveguide structure comprises a thin strip of material having a relatively high free charge carrier density surrounded by material having a relatively low free charge carrier density. The width and thickness of the strip are dimensioned such that optical radiation... | 05/09/2006 |
| 7035269 | Method and apparatus for distributed synchronous clocking A method and an apparatus are provided for synchronizing clock signals in spatially distributed nodes in large, synchronous electronic, optical, optoelectronic or wireless systems, such as systems comprising arrays of microprocessors and memories, and telecommunicat... | 04/25/2006 |
| 7026701 | Schottky barrier photodetectors A Schottky barrier photodetector comprises a waveguide structure formed by a thin strip of material having a relatively high free charge carrier density, for example a conductor or certain classes of highly-doped semiconductor, surrounded by material having a relati... | 04/11/2006 |
| 7019648 | Intruder/escapee detection system A detection system for detecting intruders moving in the vicinity of a defined path comprises a distributed antenna, for example an open transmission line, extending along the path, and an array of discrete antennas extending alongside the distributed antenna and wi... | 03/28/2006 |
| 7016566 | Lightguides In a light delivery system comprising a lightguide coupled to an optical apparatus for delivering substantially uniform light to a predetermined plane within the apparatus, images of non-uniformities caused by imperfections at or near an outlet end of the lightguide... | 03/21/2006 |
| 6992828 | Optical attentuator system A uniform optical attenuation system for high power detection comprises a detector unit (11), a plurality of diffusing elements (14, 15, 16, 17) for receiving and diffusing input light and an apertured plate (18, 19) for limiting light received ... | 01/31/2006 |
| 6975666 | Interference suppression in CDMA systems A receiver of the present invention addresses the need for improved interference suppression without the number of transmissions by the power control system being increased, and, to this end, provides a receiver for a CDMA communications system which employs interfe... | 12/13/2005 |
| 6959056 | RFI canceller using narrowband and wideband noise estimators In an adaptive filter for cancelling common-mode noise in digital subscriber loops, a narrowband noise estimator is used to detect one or more noisy frequency bands of the common mode signal and derive therefrom a first noise estimation signal. A wideband noise esti... | 10/25/2005 |
| 6944257 | Phase error cancellation circuit and method for fractional frequency dividers and circuits incorporating same A frequency divider circuit (11) has an input port for an input signal (Fo) to be divided, an output port for a divided signal (FDIV), and means (12-19) for providing a variable division-ratio control signal (N+C) and a residual q... | 09/13/2005 |
| 6940973 | Method and apparatus for cancelling common mode noise occurring in communications channels In order to overcome problems when using an adaptive filter for cancellation of common-mode noise in digital subscriber loops, caused by a portion of the differential signal being converted to common mode, which degrades the performance of the filter, a noise cancel... | 09/06/2005 |
| 6930776 | High optical rejection optical spectrum analyzer/monochromator A dual-channel, double-filtering, multi-pass OSA having a narrow spectral linewidth response and high ORR comprises a diffraction grating (DG), two input ports (P1′, P1″) for directing first and second input light beams (LR, LT) onto the grating; a... | 08/16/2005 |
| 6914999 | Electro-optic modulators A low loss, low drive voltage plasmon-polariton electro-optic modulator based on mode cutoff comprises a waveguide structure formed by a thin metallic strip surrounded by material having a relatively low free charge carrier density. The metallic strip has finite wid... | 07/05/2005 |
| 6907272 | Array receiver with subarray selection An array antenna system comprising an array of antenna elements and a receiver which uses a subset of the signals from the antenna elements, the selection of the subset of signals which should be used for a particular user is made on the basis of measurements of pot... | 06/14/2005 |
