Ricoh Company, Ltd.

Hitachi, Ltd.

Vehicle Energy Japan Inc.

Hitachi Metals, Ltd.

Ajinomoto Co., Ltd.

Oki Data Corporation

Fuji Xerox Co., Ltd.

Renesas Technology Corp.

Tokyo Shibaura Denki Kabushiki Kaisha

Sumitomo Metal Industries, Inc.

Kyowa Hakko Kogyo Co., Ltd.

Mitsui Engineering and Shipbuilding Company Limited

Proterial, Ltd.

Yahoo Japan Corporation

Hiatchi, Ltd.

Shuichi Suzuki

Mitsuru Nakajima

Atsushi Sakai

Kenichi Yoshimura

Jun Nakagawa

Koichiro Nakamura

Kishio Hidaka

Tadashi Nakamura

Hidetaka Noguchi

Hidenori Kato

Motofumi Baba

Takashi Ito

Hironori Sasaki

Mitsuo Hayashibara

Tsuyoshi Sunohara

Takeo Yasuda

Naoto Jikutani

Haike Guan

Yuichi Satsu

Hiroyoshi Sekiguchi

Tomoichi Kamo

Shigeaki Imai

Hiroyoshi Funato

Soichiro Yokota

Katsuya Akimoto

Yasuhisa Aono

Tsuyoshi Ueno

Yasufumi Yamada

Makoto Morishima

Yuichi Sato

Yusuke Hayashi

Masahiko Ogino

Shin Aoki

Junichi Saeki

Jun Yoshida

Akihiro Miyauchi

Toshio Abe

Tadashi Fujieda

Takashi Ando

Etsuko Nishimura

Makoto Okai

Kouji Yamada

Masao Koyama

Goichi Akanuma

Osamu Kubota

Hidetoshi Honbo

Ryohhei Nakao

Toru Kosaka

Kazuhiko Adachi

Yasuhiro Satoh

Toshihiro Yamashiro

Yoshiyuki Takamori

Isao Karube

Junichi Azumi

Kenji Kawase

Masayuki Fujishima

Tsuyoshi Hashiguchi

Masashi Suematsu

Hajime Kishimoto

Shinichi Kinoshita

Jun Kawaji

Motohiko Hikuma

Takeshi Miki

Takeo Iwasaki

Nobunari Tsukamoto

Chahn Lee

Suguru Sangu

Kazuma Izumiya

Motoyasu Murai

Hideomi Fujimoto

Haruo Obana

Shu Tanaka

Yuusuke Hayashi

Yuki Takei

Mistuo Hayashibara

Yasuharu Ichinose

Tadashi Shirakawa

Tatsuya Shimokawa

Kenichi Souma

Yukito Sato

Shigeki Makino

Katsutoshi Nakatani

Hiroshi Haruna

Toshiyuki Ikeoh

Mizuki Shinkawa

Takenori Ishizu

Kento Hoshi

Toshiya Teramae

Yoshimichi Numata

Junji Koezuka

Masuo Aizawa

Shunichi Uchiyama

Masanari Oda

Kazuhiko Tsukamoto

Toshiaki Horiuchi

Mitsuhiro Yoda

Atsuhiko Onuma

Masayuki Yanagihashi

Masaki Otoguro

Hiroyuki Nagase

An electrolyte solution for lithium ion secondary cell capable of suppressing a decomposition reaction of a graphite negative electrode by optimizing an amount of a cyclic carbonate, and capable of improving a cell performance in a low temperature range. The electrolyte solution for lithium ion secondary cell of the present invention includes; 10 volume % to 20 volume % of ethylene carbonate (EC) and/or propylene carbonate (PC) as a cyclic carbonate; 0.38 mol/L to 0.75 mol/L of at least one selected from lithium hexafluorophosphate (LiPF6), lithium tetrafluoroborate (LiBF4), or lithium bis(oxalate) borate (LiBOB) as a first lithium salt; and a lithium imide salt. A sum of the lithium imide salt and the first lithium salt is in a range of 0.5 mol/L to 1.5 mol/L, and a mole ratio of the cyclic carbonate/the first lithium salt is in a range of 3 to 5.

Electrolyte solution for lithium ion secondary battery

Provided is a positive electrode for a lithium ion secondary battery that suppresses both a decrease in discharge capacity and an increase in internal resistance due to charging and discharging. The positive electrode for the lithium ion secondary battery includes a positive-electrode current collector and a layered structure provided on the positive-electrode current collector, in which the outermost layer of the layered structure contains a first positive-electrode active material represented by LiMOwherein X satisfies −0.15≤X≤0.15, Mrepresents an element group including Ni, Co, and Mn, and the innermost layer of the layered structure contains a second positive-electrode active material represented by LiMOwherein Y satisfies −0.15≤Y≤0.15, and Mrepresents an element group including Ni, Co, and at least one of Mn or Al.

Positive electrode for lithium ion secondary batteries, and lithium ion secondary battery

An optical device includes a light source provided with a plurality of surface-emitting laser elements to emit a laser beam, a scanner to scan the laser beam emitted from the light source, and an optical system disposed in an optical path between the light source and the scanner and to guide the laser beam to the scanner. The optical system includes a first optical element to control a divergence angle of the laser beam emitted from the light source and a second optical element to concentrate the laser beam that has passed through the first optical element onto a to-be-scanned surface of the scanner.

Optical device, range sensor using optical device, and mobile object

An optical device includes a light source section configured to emit light; a converging reflector configured to converge and reflect the light from the light source section to an irradiation surface having a curvature; and a position detector configured to detect a light-receptive position of the light reflected from the irradiation surface.

Optical device, retinal projection display, head-mounted display, and optometric apparatus

An optical deflector includes a mirror configured to reflect light; a pair of support portions each having an end connected to the mirror, and configured to support the mirror; first actuators connected to the respective support portions, and configured to deform the support portions so as to cause the mirror to oscillate about a first axis; a movable frame configured to support the first actuators; and second actuators connected to the movable frame and disposed opposite to the first actuators, with the support portions being interposed between the first actuators and the second actuators. The second actuators are not connected to the support portions. The first actuators and the second actuators bend and deform in the same direction.

Optical deflector, deflection apparatus, distance measuring apparatus, image projecting apparatus, and movable body

The present invention relates to a pinch detection switch () that includes one tubular pressure-sensitive detection member () having a plurality of electrode wires spaced apart from one another, and a cover member () covering the pressure-sensitive detection member. When the cover member () is viewed in cross section, the cover member () includes a base portion (-), a hollow portion (), and a deformation portion (-) provided on the base portion (-) so as to cover the hollow portion (). The pressure-sensitive detection member () is arranged in the deformation portion (-), and a receiving portion () configured to receive the pressure-sensitive detection member () is arranged on the base portion (-). The receiving portion () has at least two receiving surfaces (--) formed at positions facing the pressure-sensitive detection member (), the two receiving surfaces being configured to receive the pressure-sensitive detection member.

Pinch detection switch and pinch detection method

Provided is a positive electrode for lithium ion secondary cell that includes an electrolyte holding layer excellent in electron conductivity, and a lithium ion secondary cell using the same. The present invention relates to a positive electrode for lithium ion secondary cell that includes a positive electrode current collector foil and positive electrode mixture layers laminated on both surfaces of the positive electrode current collector foil. The positive electrode mixture layer includes a first positive electrode active material layer, an electrolyte holding layer, and a second positive electrode active material layer. The first positive electrode active material layer, the electrolyte holding layer, and the second positive electrode active material layer contain positive electrode active materials, binders, and conductive agents containing carbonaceous material. A conductive agent ratio of the electrolyte holding layer is higher than conductive agent ratios of the first positive electrode active material layer and the second positive electrode active material layer. A positive electrode active material ratio and a binder ratio of the electrolyte holding layer are lower than positive electrode active material ratios and binder ratios of the first positive electrode active material layer and the second positive electrode active material layer.

Positive electrode for lithium ion secondary cell, and lithium ion secondary cell using same

A distance measuring apparatus includes a light source to emit light beams, an optical scanner to scan the light beams output from the light source over a predetermined range, a light receiver to receive reflected light obtained as a result of the light beams being reflected by a target object, and to output detection signals, and a control circuit to measure a distance to the target object based on the detection signals. The light source including a plurality of light-emitting device groups that are arranged in a scan direction of a scan performed by the optical scanner, and the control circuit being to make the plurality of light-emitting device groups emit light at respective different timings in a single scan, and to measure the distance to the target object based on a sum of the detection signals.

Distance measuring apparatus and mobile body including the same

A pinch detection sensor, for detecting the occurrence of pinch during closing of a sliding door, includes a door front edge rubber including a hollow portion inside, to be attached to a front edge portion of the sliding door in a closing movement direction of the sliding door, and a plurality of linear shape pressure sensing members accommodated in the hollow portion, each linear shape pressure sensing member comprising a tubular elastic body and respective conductor wires spaced apart from each other in an inner side of the tubular elastic body. The door front edge rubber includes, in the hollow portion, a plurality of housing spaces, which accommodate the plurality of linear shape pressure sensing members, respectively. Movements of the linear shape pressure sensing members between the plurality of housing spaces are restricted by a partitioning portion.

Pinch detection sensor

A data management device is provided, which includes an interpreting unit that interprets an input record, and convert the input record to abstract expression by which a correspondence relation between a data item and data itself is recognizable; and a converting unit that stores, in a storage unit, a data set, in which the data itself and index information capable of identifying the record are associated, as column data for each of the data items.

Data management device, data management method, and non-transitory computer readable storage medium

The life of a secondary battery has not been able to be prolonged due to deterioration of the secondary battery. In one step, whether a difference between an average value of a negative electrode capacity deviations calculated in a different step and a negative electrode capacity deviation calculated in another step is larger than a predetermined value is determined. In a case where the average value of the measured negative electrode capacity deviations is larger than the ideal negative electrode capacity deviation, and deterioration of the negative electrode capacity deviation is proceeding, a secondary battery is controlled to operate at a high voltage in a further step. With the control, the deterioration of the negative electrode capacity deviation is suppressed and the life of the secondary battery is prolonged.

Secondary battery control device

An optical device includes a light source that emits light to irradiate an object, a light emission driver that drives the light source to emit light at a predetermined light emission period, a position detector that outputs a detection signal corresponding to reflected light that is the light reflected by the object, and a signal extractor that extracts, from the detection signal, a signal with a period corresponding to the light emission period by using a reference signal with a period corresponding to the light emission period, and outputs the extracted signal.

Optical device, retinal projection display, head-mounted display, and input device

A pinch detection device, for detecting the occurrence of pinch during closing of one pair of sliding doors, is composed of a first door front edge rubber to be attached to an edge portion in a closing movement direction of one sliding door of the one pair of sliding doors, and a second door front edge rubber to be attached to an edge portion in a closing movement direction of an other sliding door of the one pair of sliding doors. The first door front edge rubber includes a recessed portion, which is open toward the second door front edge rubber, with a linear shape pressure sensitive sensor, which is sensitive to a pressure in the event of pinch, being disposed in that recessed portion.

A door leading edge sensor has a door leading edge elastic member which is attached to a front end portion of a door in a door closing direction and includes a cavity extending in a direction intersecting with the closing direction; a linear pressure sensitive sensor is attached to the door leading edge elastic member and is disposed along the extending direction of the cavity. The pressure sensitive sensor has an insulator tube having such an elasticity as to be deformed in accordance with an elastic deformation of the door leading edge elastic member and has plural conductive members fixed to an inner surface of the insulator tube. The plural conductive members are in a non-contact state when the insulator tube is not deformed and are in contact with each other when the insulator tube is deformed.

Door leading edge sensor

A movable diffraction element and a spectroscope. The movable diffraction element includes a movable component having a comb-like shape, a supporting unit configured to support the movable component, a first cantilever actuator coupled to the supporting unit, a displacement determiner coupled to an edge of the first cantilever actuator, and a second cantilever actuator disposed parallel to the first cantilever actuator. In the movable diffraction element, a slope generated when the second cantilever actuator deforms is approximately equivalent to a slope generated at the first cantilever actuator. The spectroscope includes the movable diffraction element.

Movable diffraction element and spectroscope

Growing community of inventors

Tokyo, Japan

Shuichi Suzuki