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| Number | Title | Issue Date |
| 8174759 | Apparatus for gain control in optical amplifiers The invention relates to an apparatus for dynamically controlling the gain of an optically pumped optical amplifier, and the optical amplifier including such apparatus, which utilizes a multiplying digital to analog converter to implement a digitally adjustable anal... | 05/08/2012 |
| 8134277 | Electrostatic comb actuator An electrostatic comb actuator having reduced in-plane rotation of a tiltable element is disclosed. The actuator has a stator comb electrode and a tiltable rotor comb electrode. The rotor comb electrode fingers extend from an anchor wall running parallel to the axis... | 03/13/2012 |
| 8130063 | Waveguide filter A waveguide bandpass filter for use in microwave and millimeter-wave satellite communications equipment is presented. The filter is based on a substrate integrated waveguide (SIW) having several cascaded oversized SIW cavities. The filter is implemented in a printed... | 03/06/2012 |
| 8121483 | Packaging a reconfigurable optical add-drop module A hermetically packaged, MEMS array-based ROADM module is disclosed. The enclosure sidewalls and a top lid are made of Kovar, and the base is made of alumina ceramic AuSn-soldered to the enclosure sidewalls. The MEMS array is attached to the ceramic base. The optics... | 02/21/2012 |
| 8102528 | Particle standard and method of calibrating or validating an optical particle analyzer The present invention provides a particle standard including particles having optical properties similar to those of a carrier in which the particles are dispersed, as well as a method of calibrating or validating a subject optical particle analyzer with respect to ... | 01/24/2012 |
| 8093604 | Engineered structure for solid-state light emitters An engineered structure of a light emitting device comprises multiple layers of alternating active and buffer materials disposed between AC or DC electrodes, which generate an electric field. The active layers comprise luminescent centers, e.g. group IV semiconducto... | 01/10/2012 |
| 8089080 | Engineered structure for high brightness solid-state light emitters Electroluminescent (EL) light emitting structures comprises one or more active layers comprising rare earth luminescent centers in a host matrix for emitting light of a particular color or wavelength and electrodes for application of an electric field and current in... | 01/03/2012 |
| 8081875 | Wavelength switch The present invention relates to a wavelength switch including two switching stages. A single actuation array of reflecting elements of a first switching stage routes sub-beams at different wavelength bands to a plurality of actuation arrays of reflecting elements o... | 12/20/2011 |
| 8072663 | Scanning system for lidar The present invention relates to a scanning system optimized for lidar that includes a nodding mirror, a rotary electromagnetic drive, a rotary optical encoder, and control circuitry. The rotary electromagnetic drive includes a yoke incorporating a permanent magnet,... | 12/06/2011 |
| 8059048 | Rotating antenna steering mount An antenna steering mount includes two basic building blocks which are joined together to form any of the known steering-axis combinations. Each block includes a cylinder cut at an angle to form a cylindrical wedge. The wedges are joined together by bearings at thei... | 11/15/2011 |
| 8049944 | MEMS device and a MEMS device array A two-axis tiltable linear array of MEMS micromirrors is described. The individual micromirrors of the array are flexibly suspended over a common substrate by using two pairs of serpentine hinges coupled by a gimbal ring and are actuated by using tilt and roll elect... | 11/01/2011 |
| 8045854 | M×N wavelength selective optical switch A M×N wavelength selective optical switch (WSS) for switching K wavelength channels is disclosed. The WSS has two MEMS micromirror arrays, a M×K array and a 1×N array, for switching any wavelength channel from any input port to any output port, provided that any ... | 10/25/2011 |
| 8040607 | Surface-relief diffraction grating A bilayer transmission diffraction grating having antireflection lines having rectangular cross-section over grating lines having trapezoidal cross-section is described. The process-dependent grating line profile is accounted for by characterizing the grating line p... | 10/18/2011 |
| 8038582 | Articulated handles for rowing exercise devices A handle for an exercise machine, e.g. a rowing machine, which is mounted on an end of a connecting linkage, e.g. chain, strap or cord, which extends along an axis of force application in the exercise machine. The handle includes first and second arm structures pivo... | 10/18/2011 |
| 8036502 | Stress free mounting of optical bench for WSS An optical bench in a wavelength selective switch (WSS) is mounted using a combination of fixed mounts and stress-free mounts. The WSS is packaged in an enclosure including a base, a sidewall, and a lid. The optical switching engine is attached directly to the base.... | 10/11/2011 |
| 7952778 | Biaxial MEMS mirror with hidden hinge A multi-layer hidden hinge and actuator design for high fill factor biaxial MEMS mirror array for wavelength selective switches (WSS) based on a silicon-on-insulator (SOI) process with wafer bonding and coarsely aligned orthogonal vertical comb and/or parallel plate... | 05/31/2011 |
| 7942193 | Heat recovery ventilator with defrost A defrost system for a heat recovery ventilator/energy recovery ventilator (HRV/ERV), uses the interior space supply air of an integrated fan coil for defrosting a HRV/ERV core without creating negative pressure in the interior space, which wastes energy, without ne... | 05/17/2011 |
| 7923925 | Light emitting device with a stopper layer structure Electroluminescent (EL) devices structures are provided comprising a hot electron stopper layer structure to capture hot electrons and dissipate their energy, thereby reducing damage to the transparent conducting oxide (TCO) layer and reducing other hot electron eff... | 04/12/2011 |
| 7923288 | Zinc oxide thin film electroluminescent devices A thin film electro-luminescent device (TFEL) includes an active layer made of a direct bandgap semiconductor material, e.g. zinc oxide, doped with exciton binding centers, such as aluminum, in small amounts, e.g. 0.001 at % to 30.0 at %. The exciton binding centers... | 04/12/2011 |
| 7912118 | Hybrid domain block equalizer The invention provides a method and device for iterative hybrid time-frequency domain block equalization of signals received via a communication channel subject to multipath interference. The equalization method includes frequency-domain equalization of blocks of re... | 03/22/2011 |
| 7903318 | MEMS micromirror devices with anti-reflective structures Diffractive patterns are disposed on a MEMS substrate in the gaps between the MEMS micromirrors to reduce backreflection of light leaking through the gaps and reflected by the MEMS substrate. The diffractive patterns are silicon surface-relief diffraction gratings o... | 03/08/2011 |
| 7881183 | Recovery from control plane failures in the LDP signalling protocol The invention provides a distributed back-up mechanism and a two-step method for facilitating fast control plane recovery in a switched network. In a preferred embodiment, a Label Information Database (LID) maintained at a control node of a GMPLS network is mirrored... | 02/01/2011 |
| 7874895 | Benchtop end mill grinding center The end mill grinding device of the present invention includes a tool spindle assembly, which enables multi-axis positioning of a rotating cutting tool being sharpened, and a motor tower, which enables multi-axis positioning of a grinding or cutting wheel for sharpe... | 01/25/2011 |
| 7865079 | MWS drift feedback compensator using VOA and input power dithering The invention relates to a compensator of attenuation drift in an optical multi-wavelength switch (MWS) which uses input signal amplitude dither and external VOA dither cancellation to determine relative position of MEMS micro mirror hence indirectly determining att... | 01/04/2011 |
| 7859664 | Plurality of samples and method for selecting a target sample therefrom The present invention provides a plurality of samples, each of which includes particles of a predetermined particle dimension, within narrow predetermined limits, dispersed in a carrier at a predetermined particle concentration. The predetermined particle dimension ... | 12/28/2010 |
| 7856773 | All-in-one modular construction system The invention relates to a modular construction system for full size or toy/model size buildings. The basic structure is made of interconnectable panels, which are grouped into four main types: base panels, wall panels, ceiling panels, and roof panels. Each panel ha... | 12/28/2010 |
| 7839467 | Color Tuneable electroluminescent devices The present invention replaces conventional lighting devices, such as incandescent lamps, fluorescent lamps, and LED lamps, with an integrated electro-luminescent film structure, subdivided into electrically isolated micro-panels. Ideally, the electro-luminescent st... | 11/23/2010 |
| 7822147 | Self-calibrating multi-port circuit and method The invention provides a type-based method to compensate for distortions in circuits operating on a plurality of input modulated signals to form one or more output modulated signals. Steps of the method include low-rate sampling of the output signal to obtain a stat... | 10/26/2010 |
| 7817331 | MEMS device with an angular vertical comb actuator A vertical comb electro-static actuator for rotating a micro-electro-mechanical micro-mirror device about a tilt axis or rotation. The rotor comb fingers of the comb drive extend from a sub-frame of the micro-mirror, which includes a prestressed layer for bending th... | 10/19/2010 |
| 7813040 | Multi-stage optical isolator A double stage isolator is formed of face-to-face slabs or sheets of materials that will suitably split, combine, non-reciprocally rotate to ensure isolation in a reverse direction from output ports to respective input ports of any light launched into the input port... | 10/12/2010 |
| 7804915 | Distortion compensation circuit and method The invention relates to methods and circuits for compensating linear in-band distortions such as those occurring in RF circuits of broad band communication systems. A low-rate sampling is used to collect statistical information about a modulated signal after it pas... | 09/28/2010 |
| 7800117 | Pixel structure for a solid state light emitting device A light emitting device includes an active layer structure, which has one or more active layers with luminescent centers, e.g. a wide bandgap material with semiconductor nano-particles, deposited on a substrate. For the practical extraction of light from the active ... | 09/21/2010 |
| 7782514 | Pivoting micro-mirror MEMS device with a sandwiched structure and a closed cellular core A large micro-mirror, e.g. 3 mm by 4 mm, in accordance with the present invention has sufficient rigidity to ensure a low mirror curvature, e.g. a radius of curvature greater than 5 meters, and a low mass in order to ensure a high oscillation frequency, e.g. greater... | 08/24/2010 |
| 7749049 | Submerged fluid jet polishing Fluid jet polishing (FJP) is a method of contouring and polishing a surface of a component by aiming a jet of a slurry of working fluid from a nozzle at the component and eroding the surface to create a desired shape. During erosion, the end of the nozzle and the co... | 07/06/2010 |
| 7725027 | Multi-unit wavelength dispersive device The multi-unit wavelength switch enables multiple independent wavelength switching of a plurality of incoming multiplexed optical beams simultaneously on the same optical platform. The different units can have similar functionality or provide disparate functionality... | 05/25/2010 |
| 7723810 | Integrated electrical cross-talk walls for electrostatic MEMS To reduce cross-talk between adjacent hot electrodes, the present invention provides a ground plane, which extends beneath each side of a MEMS mirror platform covering opposite edges of a hot electrode along each side thereof. The ground plane includes an overhang s... | 05/25/2010 |
| 7720335 | Hybrid planar lightwave circuit with reflective gratings The present invention relates to a hybrid planar lightwave circuit in which a silicon reflective diffraction grating etched with a highly accurate deep reactive ion etching process is mounted in a trench formed in a high optical performance silica on silicon wavegui... | 05/18/2010 |
| 7715076 | Micromirror device with a hybrid actuator A hybrid electro-static actuator for rotating a two-dimensional micro-electro-mechanical micro-mirror device about two perpendicular axes includes a vertical comb drive for rotating the micro-mirror about a tilt axis, and a parallel plate drive for rotating the micr... | 05/11/2010 |
| 7713178 | Skating simulation exercise device The invention relates to a skating simulating exercise device including a force transmission means, which exponentially increases the amount of force required to spin a flywheel as the user approaches the limits of ovoid shaped boundaries, thereby eliminating abrupt... | 05/11/2010 |
| 7712405 | Variable containment vessel An explosion containment vessel includes an inner frame structure for surrounding a potential explosive device, and an outer expandable containment vessel, which expands with the explosion, thereby mitigating potential damage that a bomb blast could do. In addition,... | 05/11/2010 |
