Patent application number | Description | Published |
20110109262 | WIRELESS ENERGY TRANSFER ANTENNAS AND ENERGY CHARGING SYSTEMS - A resonant wireless energy transfer system comprises first and second antennas made up of dual parallel wire helixes wherein the wires are terminated by short wires. Voltage controlled variable capacitors are connected into the antennas to permit progressive variation between folded dipole and normal dipole operating modes such that optimum energy transfer can be achieved between the antennas over a wide range of antenna separation distances. A vehicle battery charging system using the above-described antennas is provided including an installation which allows purchase of battery charging power by members of the general public. In-vehicle energy transfer for sensors, computers, cell phones and the like is also described. | 05-12-2011 |
20110139234 | GRATING STRUCTURE FOR DIVIDING LIGHT - A grating structure and a solar cell assembly. In one aspect, the grating structure suppresses the zero order transmission to near 0%. In another aspect, the solar cell assembly has improved absorption due to coupling with a grating structure. | 06-16-2011 |
20110181956 | OPTICAL DEVICE USING DIFFRACTION GRATINGS - A double-sided grating divider acts as a light switch where the upper and lower grating dividers are arranged to accommodate a relative lateral shift therebetween of about one-fourth of the period of the diffraction grating elements and where the critical refraction angles of the grating dividers are more than about 43.6°. Lateral shift may be achieved by various devices including MEMS and metal couplers having a known/calibrated thermal coefficient of expansion over a temperature range of interest. | 07-28-2011 |
20110181957 | OPTICAL LIGHT SWITCH USING DOUBLE-SIDED DIFFRACTION STRUCTURE - A light switch (or valve) made up of two mutually inverted, substantially identical diffraction gratings with a liquid medium therebetween, arranged to allow the grating substrates to be shifted laterally relative to one another so as to align and mis-align the grating elements. When aligned, incident-polarized light passes through the switch and when misaligned, light does not pass through the switch but is reflected. | 07-28-2011 |
20110205617 | REFLECTION-MINIMIZED PHOTONIC CRYSTAL AND DEVICE UTILIZING SAME - A photonic crystal structure that is composed of a host media having periodic dielectric holes disposed in the media at a period of a | 08-25-2011 |
20120006404 | SOLAR CELL ASSEMBLY WITH DIFFRACTION GRATINGS - A solar cell structure using either a dye-sensitized or organic absorber is provided with a diffraction grating on at least one side to enhance the travel of first order diffraction components through the photo sensitive material. A two-sided cell uses diffraction gratings both top and bottom wherein the periodic diffraction elements of one grating are shifted by one-quarter of the grating period relative to the other. | 01-12-2012 |
20120038987 | OPTICAL DEVICE USING DOUBLE-GROOVE GRATING - Optical devices using double-groove diffraction gratings having periodic sets of TiO | 02-16-2012 |
20120075703 | OPTICAL DEVICE USING LATERALLY-SHIFTABLE DIFFRACTION GRATINGS - A double-sided grating divider acts as a light switch where the upper and lower grating dividers are arranged to accommodate a relative lateral shift therebetween of about one-fourth of the period of the diffraction grating elements and where the critical refraction angles of the grating dividers are more than about 43.6°. Lateral shift may be achieved by various devices including MEMS and metal couplers having a known/calibrated thermal coefficient of expansion over a temperature range of interest. | 03-29-2012 |
20120174980 | SOLAR CELL WITH DOUBLE GROOVE DIFFRACTION GRATING - Double groove diffraction gratings are used in combination with various types of photoelectrodes including dye-sensitized and organic photoelectrodes to increase absorption efficiency as well as to provide one or more of a variety of functions including transparency and reflectivity. | 07-12-2012 |
20120206001 | MAGNETIC FIELD FOCUSING FOR ACTUATOR APPLICATIONS - A switched reluctance motor includes a stator and a rotor, the stator having stator poles supporting a magnetic field focusing device such as a near field plates on each stator pole tip. An example near field plate has a spatially modulated surface reactance configured so as to focus magnetic flux extending from each pole tip within at least one region of increased magnetic field proximate the pole tip. | 08-16-2012 |
20120206226 | MAGNETIC FIELD FOCUSING FOR ACTUATOR APPLICATIONS - The magnetic force between the electromagnet and plunger of a magnetic actuator, the electromagnet including a coil generating magnetic flux when the coil is energized, can be increased by locating a near field plate on the electromagnet. The near field plate has a spatially modulated surface reactance configured to focus the magnetic flux within a region of the plunger, such as the central portion of an end portion of the plunger proximate the electromagnet, so as to increase the magnetic force between the electromagnet and plunger. Examples also include permanent magnet based actuators and the use of other magnetic field focusing devices. | 08-16-2012 |
20120250140 | ACOUSTO-OPTIC SCANNER - An acousto-optic laser beam scanner of improved scanning angle scope is provided by introducing a controllable compound acoustic waveform into a light transmissive body wherein at least binary and binary diffraction grating patterns of both positive and negative sense can be introduced into the body, the period of the waveform determining the refraction angle magnitude and the order of the pulses determining the refraction angle direction. | 10-04-2012 |
20130265004 | WIRELESS ENERGY TRANSFER ANTENNAS AND ENERGY CHARGING SYSTEMS - A resonant wireless energy transfer system comprises first and second antennas made up of dual parallel wire helixes wherein the wires are terminated by short wires. Voltage controlled variable capacitors are connected into the antennas to permit progressive variation between folded dipole and normal dipole operating modes such that optimum energy transfer can be achieved between the antennas over a wide range of antenna separation distances. A vehicle battery charging system using the above-described antennas is provided including an installation which allows purchase of battery charging power by members of the general public. In-vehicle energy transfer for sensors, computers, cell phones and the like is also described. | 10-10-2013 |
20130271838 | OPTICAL DEVICE USING DOUBLE-GROOVE GRATING - Optical devices using double-groove diffraction gratings having periodic sets of TiO | 10-17-2013 |
20140144506 | GRATING STRUCTURE FOR DIVIDING LIGHT - A grating structure and a solar cell assembly. In one aspect, the grating structure suppresses the zero order transmission to near 0%. In another aspect, the solar cell assembly has improved absorption due to coupling with a grating structure. | 05-29-2014 |
20140327301 | WIRELESS ENERGY TRANSFER ANTENNAS AND ENERGY CHARGING SYSTEMS - A resonant wireless energy transfer system comprises first and second antennas made up of dual parallel wire helixes wherein the wires are terminated by short wires. Voltage controlled variable capacitors are connected into the antennas to permit progressive variation between folded dipole and normal dipole operating modes such that optimum energy transfer can be achieved between the antennas over a wide range of antenna separation distances. A vehicle battery charging system using the above-described antennas is provided including an installation which allows purchase of battery charging power by members of the general public. In-vehicle energy transfer for sensors, computers, cell phones and the like is also described. | 11-06-2014 |