Ricoh Company, Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Dai Nippon Printing Co., Ltd.

Shimano Inc.

Masafumi Tanaka

Takashi Ikeda

Tatsuya Fujii

Toshihiko Takahashi

Shigekazu Yamagishi

Kazuo Sakamoto

Takaya Masuda

Takafumi Suzuki

Ryo Fukui

Gen Furui

Hironori Kamiyama

Yukimitsu Iwata

Yuichi Miyazaki

Koubun Sakagami

Jun Tsujimoto

Eiichi Maeda

Kazuo Matsufuji

Michiaki Takei

Takafumi Shibata

Keisuke Ikeda

Yoshihiro Fukui

Yuri Shimozaki

Satoshi Shahana

Yutaka Sato

Masahiro Nakakura

Takafumi Nishino

Kazuki Koshiyama

Hitoshi Takayama

Shingo Sakurai

Hiroki Sugiyama

Kentaro Hoshi

Masaaki Nishi

Yukihiro Imai

Youichirou Oohashi

Nobu Masubuchi

Yasuhiro Nakashima

Kazuki Tsukiyama

An optical film having high anti-glare properties and favorable fingerprints wiping off properties is provided. The optical film has a first surface, and a second surface which is a surface opposite to the first surface, wherein the optical film comprises an anti-reflection layer and an anti-glare layer in this order from the first surface to the second surface, the first surface has a profile of depressions and projections, the first surface has an arithmetic mean height Sa of 0.05 μm or more specified in ISO 25178-2:2012, and the first surface satisfies the relation represented by the following Expression 1: Sw×Vmp≤2.00 (Expression 1) wherein 'Sw' represents a tilt angle (degrees) of 30 μl pure water droplet flowing down on the first surface; and “Vmp” represents a value of a peak material volume (ml/m) of the first surface specified in ISO 25178-2:2012.

Optical film, and polarizing plate, surface plate, image display panel and image display device using the optical film, and method for producing the optical film, and method for selecting optical film, and evaluation method of finger print wiping property

A bicycle electric component comprises a wireless communicator, a casing, and an electromagnetic shield. The wireless communicator is configured to receive a wireless signal. The casing has an internal space. The wireless communicator is disposed in the internal space of the casing. The electromagnetic shield includes a shield member to cover at least a part of the wireless communicator. The shield member of the electromagnetic shield is a separate member with respect to the casing.

Bicycle electric component

An electronic controller and a control system are provided that allow the rider to comfortably ride a human-powered vehicle. The electronic controller includes at least one processor configured to control a notification device based on environmental information related to a surrounding environment of a human-powered vehicle.

Controller and control system

A bicycle electric component comprises a wireless communicator, a power source, and a switcher. The wireless communicator is configured to receive a wireless signal. The power source is configured to supply a first electric power to the wireless communicator. The switcher is configured to change an electric connection state between the wireless communicator and the power source. The switcher includes an electric generator configured to generate a second electric power by an external input to a bicycle.

The present invention aims to provide an adhesive composition which enables achievement of highly strong adhesion between a lightweight composite resin and a lightweight metal member, and which can maintain excellent adhesive strength even in cases where the ambient temperature largely changes or the adhesive composition is in contact with water or a snow-melting agent, and an adhesive sheet using it. The above object can be achieved with an adhesive composition containing at least an epoxy resin, an acrylic particle, and a curing agent, wherein the acrylic particle is a core-shell structure containing a butadiene-based rubber, and polymethacrylate or polyacrylate. The adhesive sheet is constituted such that an adhesive layer formed with the adhesive composition is present between a first release film and a second release film.

Adhesive composition and adhesive sheet using same

A lighting device of the present disclosure includes: an excitation light source; a phosphor for receiving an excitation light from the excitation light source and emitting a fluorescent light; a spreader for supporting the phosphor; and a reflective layer disposed between the phosphor and the spreader and reflecting the fluorescent light. The phosphor is a plurality of phosphor pieces disposed to be adjacent to each other and having the same characteristic.

Lighting device and projection display apparatus

The phosphor disc disclosed here includes the following structural elements: a disc-shaped metal plate; a phosphor layer disposed circumferentially on the metal plate; and a bonding layer for bonding the phosphor layer to the metal plate. The metal plate curves convexly toward the phosphor layer.

Phosphor disc, phosphor wheel, light source device, projection display apparatus, and manufacturing method of phosphor disc

A phosphor wheel module includes a substrate and a phosphor region disposed on a surface of the substrate. The phosphor region includes a phosphor that is disposed on at least a part of a circumference of a circle with a first radius from a rotation center of the substrate. The substrate includes a ventilation region and a heat conduction region. The ventilation region includes a plurality of openings that is located closer to the rotation center of the substrate than the phosphor region. The heat conduction region is located farther away from the rotation center of the substrate than the phosphor region.

Phosphor wheel module, light source device, and projection display apparatus

A bicycle electric component comprises a wireless communicator and a detector. The wireless communicator is configured to receive a wireless signal. The wireless communicator has a first operating mode and a second operating mode. A power consumption of the second operating mode is lower than a power consumption of the first operating mode. The detector is to detect an operational state of a bicycle. The wireless communicator is configured to change from the second operating mode to the first operating mode in a state where the wireless communicator receives the wireless signal and the detector detects the operational state of the bicycle.

A phosphor wheel includes a disc-shaped substrate and a phosphor ring fixedly bonded to the substrate. At least three cut-out sections or openings are formed on a rim of the substrate. The shortest length from the center of the substrate to inner edges of the cut-out sections or inner edges of the openings is generally equal to a radius of an outer circumference of the phosphor ring.

Phosphor wheel, light source device, and projector-type image display apparatus

A phosphor wheel includes: a substrate; a light reflection layer disposed on one surface of the substrate; a phosphor layer; and a bonding layer which is located between and bonds the light reflection layer and the phosphor layer, wherein the bonding layer contains a particle which is higher in thermal conductivity than a base material of the bonding layer and higher in light reflectance than the light reflection layer.

Phosphor wheel, light source device, and projection image display apparatus

In order to improve the scratch resistance of an antireflective article having a moth-eye structure, an antireflective article is provided that has fine protrusions densely arranged therein, and has the interval between adjacent fine protrusions being no more than the shortest wavelength in the wavelength band for antireflection. At least some of the fine protrusions are fine protrusions having a plurality of apexes.

Antireflective article, image display device, production mold for antireflective article and production method for antireflective article production mold

In order to improve the scratch resistance of an antireflective article having a moth-eye structure, an antireflective article is provided that has fine protrusions densely arranged therein, has the interval between adjacent fine protrusions being no more than the shortest wavelength for an electromagnetic wavelength band for antireflection, and wherein: the fine protrusions are arranged in a non-lattice shape in the planar view; and mesh division lines formed upon the valley sections between each adjacent fine protrusions and surrounding each fine protrusion match Voronoi tessellation having the center of gravity of the fine protrusions, in the planar view as the generating point therefor, in at least one area of the antireflective article.

Antireflective article, image display device, and production mold for antireflective article

Growing community of inventors

Osaka, Japan

Masafumi Tanaka