Mitsumi Electric Company Ltd.

Denki Kagaku Kogyo Kabushiki Kaisha

Denka Company Limited

Konica Minolta, Inc.

Kabushiki Kaisha Toshiba

National Institute for Materials Science

Kabushikikaisha Kenwood

Sei Corporation

Other

Nhk Spring Co., Ltd.

Toda Kogyo Corporation

The University of Electro-Communications

Indian Institute of Technology Kharagpur

Canon Kabushiki Kaisha Mitsumi Electric Co., Ltd.

Mitsumi Electronic, Ltd

Takashi Kawasaki

Atsushi Nishio

Takahiro Shimoyama

Kazuhiro Okazaki

Satoru Karahashi

Masashi Ouchi

Isao Suzuki

Toshiaki Miyauchi

Hiroyuki Sadohara

Taro Mizue

Makoto Murayama

Tsuguhide Sakata

Kaname Suwa

Shinji Saito

Takehiko Sawai

Tsutomu Shimada

Shogo Hagiwara

Masahiro Ibukiyama

Toshio Kawano

Kenji Nomura

Masaharu Suzuki

Yoshiroh Nagai

Katsutoshi Tsurutani

Kazunori Urao

Hidehiko Fujii

Takuya Okada

Yoshiyuki Kikuchi

Go Takeda

Hiroshi Nishikawa

Yoshio Bando

Dmitri Golberg

Hiroaki Tanji

Souichi Takagi

Hiroyuki Hara

Tatsuya Nakano

Yukio Kuroda

Fumihiro Kurokawa

Seitaro Kobayashi

Nobumasa Suzuki

Shojiro Watanabe

Tsutomu Kobari

Seiichi Sato

Keisaku Kimura

Daisuke Hashimoto

Hiroshi Murata

Kenji Konno

Kazuhiro Ito

Hiroshi Yokota

Hideyuki Emoto

Yasushi Abe

Toshihiko Hanamachi

Akihisa Kajiyama

Akira Yoda

Hiroshi Sakashita

Satoshi Hirano

Kazutoshi Matsumoto

Yoshitaka Teraoka

Teruaki Santoki

Arata Tatsumi

Yusuke Hirao

Kenji Sekiya

Ryuta Masaki

Go Takahara

Takashi Sunada

Soju Goto

Satoshi Hiranuma

Soichi Takagi

Daisuke Morita

Kazuki Matsui

Kazuhiro Kobayashi

Masaru Takimoto

Takahiko Sugihara

Tomomi Matsumura

Yoshihito Araki

Takao Inoue

Nobuyuki Yoshino

Mitsuru Kawagoe

Daisuke Shimiya

Motoharu Fukazawa

Isao Sugimoto

Tsuyoshi Wakiyama

Hiroshi Morisaki

Izumi Shibata

Shoichi Hisada

Shinji Nozaki

Kazuo Uchida

Shingo Hanazato

Taro Inada

Tatsunori Horiguchi

Yuki Toyama

Tuhin Saha

Satoshi Anzai

Anil K Bhowmick

Hideo Ueno

Jo Shinbori

Takushi Uda

Syogo Mochida

Provided are an optical system for measuring optical characteristics and a device for measuring optical characteristics capable of acquiring a two-dimensional image close to visual observation in addition to measurement of optical characteristics of a measurement target. The optical system for measuring optical characteristics includes a first optical system () that captures an infinite conjugate image and a second optical system () that captures a conjugate image of a measurement target. The first optical system () and the second optical system () sharing a first lens group (G) are arranged on two optical axes separated by an optical element () that deflects an optical axis, respectively, and are configured as one measuring optical system. Furthermore, an aperture stop of the second optical system () is arranged in the vicinity of an intermediate image. When a distance in an optical axis direction from an image side paraxial focal point of the first lens group (G) to the aperture stop is represented by Δp, and a focal distance of the first lens group is represented by f1, Δp/f1 satisfies −1.0<Δp/f1<3.0.

Optical system for measuring optical characteristics and device for measuring optical characteristics

An electrical connector contains a first contact group arranged on a first contact plane, a second contact group arranged on a second contact plane and a ground plate located on a ground plane. The ground plate is located between horizontally extending portions of the contacts of the first contact group and horizontally extending portions, downwardly extending portions and terminal portions of the contacts of the second contact group in addition to between contacting portions and the horizontally extending portions of the contacts of the first contact group and contacting portions and the horizontally extending portions of the contacts of the second contact group.

Electrical connector and electronic device

An ultraviolet optical system includes an objective lens group that captures ultraviolet light for each angle from an ultraviolet light source and forms an intermediate image, and an imaging lens group that re-images the intermediate image. Neither the objective lens group nor the imaging lens group has a cemented surface, and all lenses included in the objective lens group and in the imaging lens group are single lenses that transmit ultraviolet light having a wavelength of 300 nm or shorter. A light distribution measuring apparatus includes the ultraviolet optical system and a sensor, and outputs light distribution of the ultraviolet light source by using a signal obtained by the sensor. The ultraviolet optical system is positioned such that the intermediate image is re-imaged on a light receiving sensor surface, and the sensor has light receiving sensitivity to ultraviolet light having a wavelength of 300 nm or shorter.

Ultraviolet optical system and light distribution measuring apparatus

A spectrophotometer having a light-receiving optical system that images light to be measured from a position for measurement and generates imaged light to be measured; a slit formation including a slit that causes the imaged light to be measured to pass and that generates light to be measured, which travels along a measurement optical path; a grating that diffracts the light to be measured, which travels along the measurement optical path, and generates diffracted light; a sensor that receives the diffracted light and outputs a signal representing a spectral spectrum; and an observation light source that is disposed on an optical path of zeroth light among the diffracted light and that emits observation light toward the grating at a time of observing the position for measurement.

Spectrophotometer

A method for producing an acrylic rubber, the method including dividedly adding 80% to 100% by mass of the total mass of a monomer component containing 100 parts by mass of an acrylic acid alkyl ester having an alkyl group having 1 to 3 carbon atoms, 20 to 160 parts by mass of an acrylic acid alkyl ester having an alkyl group having 4 to 8 carbon atoms, and 0.1 to 10 parts by mass of a crosslinking seat monomer containing a carboxyl group, and performing emulsion polymerization at a polymerization temperature of 20&#xb0; C. to 60&#xb0; C. The monomer component may further contain a methacrylic acid alkyl ester having an alkyl group having 1 to 4 carbon atoms, and ethylene.

Method for producing acrylic rubber, acrylic rubber, acrylic rubber composition, vulcanized substance thereof, and application for vulcanized substance

A small diameter sheath heater with improved reliability is provided. The sheath heater according to one embodiment of the present invention includes a metal sheath, a heating wire having a band shape, the heating wire arranged with a gap within the metal sheath so as to rotate with respect to an axis direction of the metal sheath, an insulating material arranged in the gap, and connection terminals arranged at one end of the metal sheath, the connection terminals electrically connected with both ends of the heating wire respectively.

Sheath heater

An optical characteristic measurement device has a measurement opening, includes a first optical measurement unit and a second optical measurement unit that measure different optical characteristics with different geometries with respect to a measurement target facing the measurement opening, and further includes a processing unit that corrects a measurement value obtained in the second optical measurement unit based on a measurement value obtained in the first optical measurement unit. The first optical measurement unit includes an illumination optical system that illuminates the measurement target facing the measurement opening, a first light receiving optical system that collects light reflected by the measurement target, and a first light receiving unit that receives light collected by the first light receiving optical system and outputs the light as a measurement signal, and has a diffuse reflection surface that diffuses and reflects incident light to the illumination optical system or the first light receiving optical system. The second optical measurement unit includes a light projecting optical system that projects light from a direction inclined by a predetermined angle with respect to a normal line of a measurement surface of the measurement target facing the measurement opening, a second light receiving optical system that collects light reflected by the measurement target in a regular reflection direction, and a second light receiving unit that receives light collected by the second light receiving optical system and outputs the light as a measurement signal.

Optical characteristic measurement device

Creating a model calibrating spectral apparatus having an optical system that converts light to be measured into a spectrum, and a light-receiving sensor including a plurality of sensors that outputs signals, the sensors include sensors that output signals indicating respective energy amounts of a plurality of wavelength components. The model shows where a linear function of an indicator indicating a mechanical error in the spectral apparatus, expresses deviation of an indicator indicating spectral sensitivity of the sensor from the indicator indicating the reference spectral sensitivity of the sensor. The method comprises: a) acquiring reference spectral sensitivity; b) acquiring an indicator indicating the reference spectral sensitivity of the sensor acquired at a); and c) creating the model where the linear function of the mechanical error indicator expresses deviation of the spectral sensitivity indicator from the indicator indicating the reference spectral sensitivity of the sensor, acquired at b).

Method of calibrating spectral apparatus and method of producing calibrated spectral apparatus

Observation light can be applied to a position for measurement without providing large space in a spectrophotometer, and the position for measurement can be easily known. A slit is disposed at a position optically conjugate with the position for measurement in the spectrophotometer. Light from an object to be measured passes through the slit, travels along a measurement optical path, and is subject to wavelength dispersion by a wavelength dispersing element. An observation light source is retracted outside the measurement optical path at the time of measuring a spectral spectrum. At the time of observing the position for measurement, the observation light source is inserted into the measurement optical path, and emits observation light toward the slit. Alternatively, light from an object to be measured passes through the slit, and is diffracted by a grating. The observation light source is disposed on an optical path of zeroth light. The observation light source emits observation light toward the grating at the time of observing the position for measurement.

Provided are an acrylic rubber composition having higher tensile properties and higher heat resistance and a vulcanizate thereof. An acrylic rubber composition includes 1 to 25 parts by mass of a layered clay mineral relative to 100 parts by mass of an acrylic rubber. The acrylic rubber is a copolymer of a (meth)acrylic acid alkyl ester and a curesite monomer.

Acrylic rubber composition

Provided is positive electrode material for a highly safe lithium-ion secondary battery that can charge and discharge a large current while having long service life. Disclosed are composite particles comprising: at least one carbon material selected from the group consisting of (i) fibrous carbon material, (ii) chain-like carbon material, and (iii) carbon material produced by linking together fibrous carbon material and chain-like carbon material; and lithium-containing phosphate, wherein at least one fine pore originating from the at least one carbon material opens to outside the composite particle. Preferably, the composite particles are coated with carbon. The fibrous carbon material is preferably a carbon nanotube with an average fiber size of 5 to 200 nm. The chain-like carbon material is preferably carbon black produced by linking, like a chain, primary particles with an average particle size of 10 to 100 nm.

Composite particles, manufacturing method thereof, electrode material for secondary battery, and secondary battery

Spectral apparatus includes sensors that output signals indicating the respective energy amounts of a plurality of wavelength components. For each of the sensors, its reference spectral sensitivity is acquired, and an indicator indicating the reference spectral sensitivity of the sensor, is acquired. The deviation of an indicator indicating the spectral sensitivity of the sensor from the indicator indicating the reference spectral sensitivity of the sensor, is expressed by a linear function of an indicator indicating a mechanical error in the spectral apparatus. The indicator indicating the mechanical error in the spectral apparatus, is acquired to adapt a spectral sensitivity set of sensors to a signal set output by the sensors. For each of the sensors, the deviation of the indicator indicating the spectral sensitivity of the sensor from the indicator indicating the reference spectral sensitivity of the sensor, is acquired, so that the spectral sensitivity of the sensor is acquired.

Growing community of inventors

Tokyo, Japan

Takashi Kawasaki