Nippon Telegraph and Telephone Corporation

Kabushikikaisha Kenwood

Jvc Kenwood Corporation

Mitsubishi Electric Corporation

Hisamitsu Pharmaceutical Company, Inc.

Nomura Research Institute, Ltd.

Toppan Printing Co., Ltd.

Zeon Corporation

Sony Corporation

Ntt Corporation

Air Water Mach Inc.

Nippon Telegraph and Telephone Communications

Masahiro Ueno

Yuichi Akage

Soichi Oka

Takashi Sakamoto

Sohan Kawamura

Tadayuki Imai

Yuji Shirakata

Seiji Toyoda

Kenta Fujii

Yoshihiro Kodama

Tomoaki Shimano

Takao Tomono

Hiroshi Sugimura

Gaku Suzuki

Tianfeng Ma

Masaki Kaneda

Hiromi Uchida

Akihiko Hamanaka

Atsushi Ito

Hideyuki Nagatomo

Yoshihisa Takeyama

Tadashi Sakamoto

Takaya Tanabe

Joji Yamaguchi

Meishin Chin

Yuzo Sasaki

Shoko Tatsumi

Sumio Midorikawa

Hiromi Akiyoshi

Yurina Tanaka

Hideaki Takada

Makoto Mizukami

Manabu Yamamoto

Masahiro Endo

Shiro Suyama

Shogo Yagi

Kazunori Naganuma

Munekazu Date

Yuichi Okabe

Kazuto Noguchi

Tokinobu Mitasaki

Takashi Naito

Masakatsu Senda

Jun Miyazu

Yoshiaki Kurokawa

Kazutoshi Kato

Shigeo Ishibashi

Nobuyoshi Izawa

Yoshihito Kinoshita

Masao Sakai

Yuko Iwami

Youko Mabuchi

Kikuji Katou

Shigetaro Iwatsu

Takeshi Terashima

Yasuhiro Isoda

A first component having a plate shape includes a first incident surface and a first emission surface disposed on the opposite side of the first incident surface. The first component is made of light transmissive material having an electrostrictive effect. The first component further includes a first transparent electrode formed on the first incident surface, and a second transparent electrode formed between the first emission surface and a first reflective film.

Wavelength variable optical filter

An optical deflector has a dielectric of a paraelectric phase and deflects light transmitted through the dielectric by applying a voltage in a direction perpendicular to a transmission direction of the dielectric, the optical deflector including, in order, a first temperature control element, a first conductor on which a first sensor is disposed, the dielectric, a second conductor on which a second sensor is disposed, and a second temperature control element, wherein a voltage is applied between the first conductor and the second conductor, the dielectric is irradiated with excitation light having a substantially uniform intensity in an application direction of the voltage, and a temperature of the first conductor and a temperature of the second conductor are set to predetermined temperatures.

Optical deflector and method for determining control condition of optical deflector

An electro-optical device includes an electro-optic crystal, a first electrode, and a second electrode. A voltage is applied to the electro-optic crystal by the first electrode and the second electrode. The electro-optic crystal has an incident surface and an emitting surface parallel to each other and deflects incident light made incident on the incident surface at an acute incident angle in an electric field direction in which a voltage is applied. A rotation axis of an incident angle is parallel to the electric field direction.

Electro-optical device

An angle measurement device according to the present invention relates to an angle measurement device for measuring an incident angle of an incident light ray, and includes: at least one light deflector; a driving power supply; a light receiver; and a calculation unit. The light deflector is of a transmission type, has an electro-optic effect, and is configured to change an optical path of the light ray by a voltage applied from the driving power supply, and cause the light ray to enter the light receiver. The calculation unit is configured to calculate the incident angle based on the voltage at which an intensity of the light ray detected by the light receiver is maximum.

Angle measurement device and method

An optical deflection apparatus is provided with an optical deflection element and a compensating optical element. The optical deflection element deflects incident light in a first direction (a voltage application direction) in which a voltage is applied (one-dimensional scan). The compensating optical element is an element which has an incidence surface and an emission surface, which compensates for a deflection deviation in a second direction that is perpendicular to the first direction and to an optical axis of the incident light of deflected light having been deflected by the optical deflection element and incident from the incidence surface, and which arranges a direction of travel of compensated light to be emitted from the emission surface on a same plane.

Optical deflection device

In an embodiment, an optical deflection device includes: an electro-optic crystal comprising KTaNbO, the electro-optic crystal having a first surface and a second surface, the first surface and the second surface facing each other; a first electrode on the first surface of the electro-optic crystal; a second electrode on the second surface of the electro-optic crystal; a power source configured to output a control voltage for forming an electric field inside the electro-optic crystal via the first electrode and the second electrode; and a light source configured to emit a pulse laser to be incident on the electro-optic crystal along an optical axis, the optical axis substantially perpendicular to a direction of the electric field formed by the control voltage, wherein a peak power density of the pulse laser output from the light source at a light incidence surface of the electro-optic crystal is less than 800000 W/cm.

The present invention includes an optical deflector that changes a deflection angle depending on an applied voltage, a voltage control unit that applies a voltage to the optical deflector, and a storage unit that stores a value of a voltage to be output by the voltage control unit. The voltage control unit outputs a voltage of a value stored in the storage unit to the optical deflector. The storage unit stores a goal voltage V=g(t), which provides a deflection angle θ with the goal time dependency θ=θ(t).

Control method of optical deflector, and optical deflection device

Provided is a seal material having excellent non-adherence to metal surfaces. The seal material is formed of a cross-linked rubber that is obtained through cross-linking of a cross-linkable rubber composition containing a binary fluororubber, a carbon material, and a polyol cross-linker. The carbon material includes one or more carbon nanotubes. The cross-linked rubber has an adhesion strength of 2 N or less to a metal surface after being heated at 250° C. for 70 hours while in contact with the metal surface.

Seal material

A swept light source of the present invention keeps a coherence length of an output beam long over an entire sweep wavelength range. A gain of a gain medium is changed with time in response to a wavelength sweep and the coherence length is kept maximum. The gain of the gain medium is kept close to a lasing threshold and an unsaturated gain range of the gain medium is narrowed over the entire sweep wavelength range. An SOA current waveform data acquiring method of driving while keeping the coherence length long, a novel coherence length measuring method, and an optical deflector suitable for the swept light source are also disclosed.

Swept light source and drive data generation method and optical deflector for swept light source

A parameter measurement device of a light deflector includes a photodetector that receives output light from the light deflector, a biaxial translation automatic stage that moves the photodetector to a plurality of positions, and a signal processing device that calculates the wavelength of the output light of a wavelength sweeping light source for each time, calculates the wavelength of the light received from the light deflector by the photodetector based on the output signal of the photodetector and a previously-calculated wavelength, and calculates the incident angle of the output light beam of the wavelength sweeping light source onto the diffraction grating and an angle formed by an L-axis and a line perpendicular to the surface of the diffraction grating by performing fitting so that the coordinates of the photodetector that are obtained for each position of the photodetector and the wavelength of the light conform to a prescribed relational expression.

Optical deflector parameter measurement device, method, and program

An optical deflector includes an electro-optical material in a paraelectric phase and having a trap for accumulating charges inside the electro-optical material; an electrode pair formed on facing surfaces of the electro-optical material; a first and second conductor hold units provided so as to hold the electro-optical material and the electrode pair therebetween; a temperature sensor that measures at least one of temperatures of the conductor hold units; and a temperature control unit that controls the temperatures of the conductor hold units, based on the measurement temperature, and the optical deflector sets an optical axis of incident light into the electro-optical material so as to be orthogonal to the electric field direction, applies between the electrode pair an alternating current voltage on which a direct current bias voltage is superimposed, and thereby deflects the incident light, in which the temperatures of the first and second conductor hold units are controlled so as to give the electro-optical material a temperature gradient to make a charge density in the electro-optical material substantially uniform.

Light deflector

There is provided an electric-power conversion apparatus in which smoke emission, a burnout, and short-circuiting between a melted material and a peripheral member can be suppressed even when a fuse portion is melted by an excessive current. An electric-power conversion apparatus includes an electric power semiconductor device, an electrode wiring member, a case, a fuse portion formed in the electrode wiring member, a fuse resin member disposed between the fuse portion and the case, and a sealing resin member that seals the electric power semiconductor device, the electrode wiring member, the fuse portion, and the fuse resin member in the case.

Electric-power conversion apparatus

A collection and assignment unit collects attribute information for each file and assigns attribute information to a file to which attribute information is not assigned, when checking a file in a present information processing device. A reception unit receives attribute information of a tracking target file from a distribution device that distributes a pattern file. A search unit searches for a file associated with the attribute information of the tracking target file that is received. A transmission/procedure unit transmits, when there exists information regarding the file associated with the attribute information, the information regarding the file associated with the attribute information of the tracking target file to the distribution device and/or performs a procedure on the file.

Security measure program, file tracking method, information processing device, distribution device, and management device

Disclosed is a rubber composition which comprises a rubber, fibrous carbon nanostructures and a filler, wherein, in a state where the filler is dispersed in the rubber composition, the filler is mainly present as aggregates each formed of a plurality of primary particles aggregated with each other, and the aggregates have an average maximum diameter of 100 nm or more and 1,000 nm or less.

Rubber composition

Growing community of inventors

Tokyo, Japan

Masahiro Ueno