Hideo S Iizuka

8098430, Jan 17, 2012

May 1, 2009

12/434202

Hideo Iizuka - Ann Arbor MI, US
Nader Engheta - Berwyn PA, US

Toyota Motor Engineering and Manufacturing North America, Inc. - Erlanger KY
The Trustees of the University of Pennsylvania - Philadelphia PA

G02B 5/18
G02B 5/30
G02B 27/28

359569, 35948906, 362 19

A grating structure having a fused silica base includes alternating ridges and grooves. The ridges and grooves form a fused silica to air interface. The ridges and grooves are configured such that the grating has a ratio between the effective refractive index difference between s-polarization and p-polarization of about 1/3. As such, for non-polarized light with an incident angle θof between 40 and 90 and a wavelength λ=350-1600 nm, the grating directs both s-polarization and p-polarization components of the incident light to the −1order diffraction mode.

8264773, Sep 11, 2012

May 1, 2009

12/434269

Hideo Iizuka - Ann Arbor MI, US
Nader Engheta - Berwyn PA, US

Toyota Motor Engineering and Manufacturing North America, Inc. - Erlanger KY
The Trustees of the University of Pennsylvania - Philadelphia PA

G02B 5/18

359569, 35948906, 3594892

A grating structure for splitting light. The grating structure including alternating ridges and grooves. The ridges and grooves are configured such that the grating directs p-polarization components of incident light to the −1order diffraction mode and s-polarization components of incident light to the 0order diffraction mode.

8369000, Feb 5, 2013

Feb 19, 2010

12/708860

Hideo Iizuka - Ann Arbor MI, US
Nader Engheta - Berwyn PA, US

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY

G02F 1/29

359322

A photonic crystal structure that is composed of a host media having periodic dielectric holes disposed in the media at a period of a. Each dielectric hole has a radius r. The host media has an absolute refractive index expressed as |n| that is less than 0. 2. The photonic crystal structure has at least one reflection minimization layer disposed at an air/photonic crystal interface. The reflection minimization layer has periodic dielectric holes disposed therein at a period awith each dielectric hole having a radius rsuch that a=aand r>rand a beam steerable device including the photonic crystal structure. The device having a scanning rate of larger than 1 KHz and a scanning angle up to 25 degrees.

8400706, Mar 19, 2013

Apr 4, 2011

13/079441

Hideo Iizuka - Ann Arbor MI, US
Nader Engheta - Berwyn PA, US
Hisayoshi Fujikawa - Seto, JP

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY

G02F 1/33

359305, 359313, 359314

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.

8451080, May 28, 2013

Feb 16, 2011

13/028609

Jaewook Lee - Ann Arbor MI, US
Debasish Banerjee - Ann Arbor MI, US
Hideo Iizuka - Ann Arbor MI, US
Ercan Mehmet Dede - Ann Arbor MI, US

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY

H01F 3/00
H01F 7/08

335281, 335297, 335229, 335236, 335244, 335296, 335304

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.

8466660, Jun 18, 2013

Nov 6, 2009

12/613791

Hideo Iizuka - Ann Arbor MI, US
Jae Seung Lee - Ann Arbor MI, US
Paul Donald Schmalenberg - Ann Arbor MI, US
Brian Joseph Robert - St. Clair Shores MI, US

Toyota Motor Engg. & Mfg. North America, Inc. - Erlanger KY

H02J 7/00
H04B 5/00
H04B 1/38

320137, 320108, 455 411, 455573

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.

8467643, Jun 18, 2013

Aug 13, 2010

12/855844

Hideo Iizuka - Ann Arbor MI, US
Nader Engheta - Berwyn PA, US

Toyota Motor Engineering & Mfg. North America, Inc. - Erlanger KY
Trustees of the University of Pennsylvania - Philadelphia PA

G02B 5/18
G02B 6/34

385 37, 359575

Optical devices using double-groove diffraction gratings having periodic sets of TiOelements on one or more surfaces of an SiOsubstrate are disclosed. First order components of incident polarized light coupled into the substrate are reflected so as to propagate through the substrate to terminus points where they either change direction for further propagation or exit the substrate. A windshield display system using the principles of the invention is disclosed.

20110139234, Jun 16, 2011

Dec 15, 2009

12/638334

Hideo Iizuka - Ann Arbor MI, US
Nader Engheta - Berwyn PA, US
Yasuhiko Takeda - Aichi, JP

Toyota Motor Engineering and Manufacturing North America, Inc. - Erlanger KY
The Trustees of the University of Pennsylvania Office of Research Services - Philadelphia PA
Toyota Central Research and Development Laboratories, Inc. - Aichi

H01L 31/00
G02B 5/18
B44C 1/22

136256, 359569, 216 24

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.