Ricoh Company, Ltd.

Other

Yasuo Katano

Tsuneo Kurotori

Shigenobu Hirano

Yukimichi Someya

Tomoyasu Hirasawa

Yuko Arizumi

Kenji Kameyama

Nobuyuki Yanagawa

Naoki Nakamura

Kazuyoshi Matsumoto

Satoru Tomita

Masahiro Itoh

Yoshifumi Sudoh

Yasuhisa Kato

Takashi Maki

Kakuji Murakami

Hiroshi Yamazaki

Tomoko Takahashi

Tomoaki Sugawara

Masamichi Yamada

Kiyofumi Nagai

Takuro Sekiya

Tohru Yashiro

Naomi Sugimoto

Toshihiro Ishii

Takeshi Takemoto

Tohru Hasegawa

Satoshi Yamamoto

Shinya Nakayama

Masanori Horike

Daisuke Goto

Yohichiroh Watanabe

Ryota Inoue

Shunichi Abe

Hiroaki Kobayashi

Tamotsu Horiuchi

Toshiya Sagisaka

Akiyoshi Sabu

Shin Kayahara

Masanori Saitoh

Shinji Tanaka

Noriyasu Takeuchi

Yoshihiro Moriya

Kyuhachiro Iwasaki

Takashi Kimura

Shingo Sakashita

Mamiko Inoue

Takeshi Saitoh

Mie Yoshino

Takuma Nakamura

Hidenori Tomono

Hiromichi Komai

Norikazu Igarashi

Fuminari Kaneko

Hidekazu Yaginuma

Minoru Morikawa

Manabu Izumikawa

Aino Hasegawa

Aino Noguchi

Minori Ichimura

Takahiko Matsumoto

Shigeo Takeuchi

Susumu Momma

Ikue Kawashima

Kiyoshi Tanikawa

Tadashi Saito

Kohji Takeuchi

Satomi Tanaka

Atsushi Ohshima

Shinji Imoto

Sukchan Kim

Keiichiroh Yutani

Mitsuo Hasebe

Takuro Isayama

Toshio Kawakubo

Shuzo Matsumoto

Kei Hara

Eiichi Ohta

Yoshikazu Kaneko

Hiroyuki Horiguchi

Yuuma Usui

Minoru Ameyama

Yasutada Shitara

Seiji Hoshino

Yoshio Watanabe

Yukiko Nakajima

Kazuaki Tsuji

Shun Goto

Masato Shinoda

Masafumi Yamada

Nobuaki Kondoh

Yuichi Aoyama

Tetsurou Sasamoto

Megumi Kawahara

Shinji Tezuka

Masaaki Tsuda

Kiyohiko Shinomiya

Kohji Matsuoka

A light guide includes light guiding members including first and second light guiding members, an optical entrance having a plane on which the light is incident, a light guiding unit to guide the light incident on the optical entrance with repeated reflection, a light beam ejection unit to eject the light to an outside of the light guide, and an extraction unit to reflect the light guided by the light guiding unit toward the light beam ejection unit. The light guiding members guide and eject a light, and the second light guiding member is bonded to, at least, the light guiding unit of the first light guiding member.

Light guide and virtual-image display device

A light guide member () includes a boundary surface () configured to reflect image light guided to the boundary surface () and emit the image light outside the light guide member (), an opposing surface () parallel to the boundary surface (), the opposing surface () facing the boundary surface (), a first inclined surface () having an inclination in which a distance between the first inclined surface () and the boundary surface () decreases in a guiding direction of the image light, and a second inclined surface () between the opposing surface () and the first inclined surface (), the second inclined surface () inclined at a different angle with the first inclined surface () in the guiding direction.

Light guide member and display device

A propagation optical system includes: a first optical system; an intermediate optical element; and a second optical system. The first optical system, the intermediate optical element, and the second optical system being sequentially arranged in a direction from the image display element toward the light guide member along an optical axis. The intermediate optical element has a non-rotationally symmetric curved surface, of which shape is non-rotationally symmetric about the optical axis. A cross-sectional shape, of the non-rotationally symmetric curved surface, in a first plane including the optical axis is non-arc shape. The first plane is a plane in which the non-rotationally symmetric surface has a strongest positive power among planes including the optical axis. The propagation optical system is configured to form, between the first optical system and the second optical system, an intermediate image corresponding to an image displayed on the image display element.

Propagation optical system and virtual image display device

A virtual image display device includes: an image display element that displays an image to be displayed as a virtual image; a propagation optical system that propagates light from the image display element; and a light guide member that guides the light propagated by the propagation optical system. The light guide member includes: a light beam incident part that introduces light including image information from the propagation optical system into the light guide member; an image extractor that extracts the light including image information from an inside of the light guide member; and an image emitter that emits the light including image information to an outside of the light guide member. The propagation optical system includes one or more optical members each having a curved surface shape that is non-rotationally symmetric with respect to an optical axis.

Virtual image display device

A head-mounted display device includes an image display unit () configured to emit image light, a light guide member () configured to guide the image light and emit the image light to eyes of a wearer who wears the head-mounted display device, and a relay optical system () arranged between the image display unit and the light guide member, and configured to relay the image light from the image display unit to the light guide member, and form an intermediate image at least once before the image light enters the light guide member.

Head-mounted display device containing relay optical system between image display unit and light guide member and display system

A head-mounted display device includes a display element to display an image; a light guide member to emit the image displayed on the display element to an eye of a wearer; a housing including an optical system to guide image light of the image displayed on the display element to the light guide member; and an adjustment member provided on a side of the light guide member opposite to the optical system, and to bend the housing on a side opposite to a face of the wearer.

Head-mounted display device with adjuster

A display apparatus that enhances a response speed while suppressing reduction in durability even when the transmittance control is performed. The display apparatus includes a display, a plurality of light adjustment devices, and a controller. The display is configured to be attached to a head of a user to display information to the user. Each of the plurality of light adjustment devices is configured to change a transmittance to adjust an intensity of light incident from outside. The controller is configured to independently control the transmittances of the plurality of light adjustment devices separately from each other.

Display apparatus and display method

A monocular image display device includes a virtual image former to display an image in front of one eye of a user and a primary light amount adjuster being in front of another eye of the user. The primary light amount adjuster is disposed closer to the one eye of the user than an optical axis of the another eye of the user is.

Monocular image display device

A management server communicable with a plurality of terminal devices, including a first terminal device, includes: a receiver to receive, from the first terminal device, shared information to be shared between the plurality of terminal devices, the shared information including first location information indicating a current location of the first terminal device, direction information indicating a direction that the first terminal device faces, and distance information indicating a distance from the first terminal device to a target destination; circuitry to generate target destination information including second location information indicating a location of the target destination based on the shared information received from the first terminal device; and a transmitter to transmit the target destination information to the plurality of terminal devices for display at the plurality of terminal devices.

Apparatus, system, and method of information sharing, and recording medium

A head-mounted display apparatus () includes an image display part () configured to display an image, an optical unit () configured to lead the image to an eye of a wearer of the display apparatus (), a light intensity detector () configured to detect light intensity (A) of external light, a dimmer filter () configured to vary transmittance to adjust the intensity (B) of the external light reaching the eye of the wearer, and a controller () configured to adjust the transmittance of the dimmer filter () and the light intensity (C) of a light source of the image display part () based on the light intensity (A) of the external light obtained by the light intensity detector ().

Head-mounted display apparatus, and display method

An electrochromic dimming device is provided. The electrochromic dimming device includes an electrochromic element, a color development power source, a color discharge powder source, and a variable resistance. The color development power source supplies electric power to the electrochromic element when the electrochromic element develops color. The color discharge powder source supplies electric power to the electrochromic element when the electrochromic element discharges color. The variable resistance is disposed on a first current path without being disposed on a second current path. The first current path is formed from the color development power source through a ground via the electrochromic element, and the second current path is formed from the color discharge power source to the ground via the electrochromic element.

Electrochromic dimming device and electrochromic driving device

An electrochromic device including: first substrate; first electrode-layer on the first substrate; electrochromic layer on the first electrode-layer; second substrate facing the first substrate; second electrode-layer formed on surface of the second substrate at side of the first substrate; electrolyte layer formed between the electrochromic layer and the second electrode-layer and curable at least with ultraviolet rays; first extraction electrode to electrically connect between the first electrode-layer and power source and including region that does not transmit ultraviolet rays in at least part of the first extraction electrode; and second extraction electrode to electrically connect between the second electrode-layer and the power source and including region that does not transmit ultraviolet rays in at least part of the second extraction electrode, the region in the first extraction electrode and the region in the second extraction electrode being arranged not to overlap with each other.

Electrochromic device and electrochromic dimming device

To provide an electrochromic device including: a support; a first electrode formed on the support; a second electrode facing the first electrode, where through-holes are formed in the second electrode; an electrochromic layer disposed in a space between the first electrode and the second electrode; a first electrolyte layer disposed in the space between the first electrode and the second electrode; a second electrolyte layer disposed to communicate with the first electrolyte layer through the through-holes; an inorganic protective layer, which is disposed on a surface of the second electrolyte layer not facing the second electrode, and is configured to shield oxygen and water vapor; and an organic protective layer disposed on a surface of the inorganic protective layer that does not face the second electrolyte layer.

Electrochromic device and method for producing electrochromic device

To provide a toner which contains a binder resin, a colorant, and capsules, wherein the binder resin contains a thermoplastic elastomer, and wherein the capsules each encapsulate a plasticizer capable of softening the thermoplastic elastomer and the capsules are fractured upon application of predetermined pressure.

Toner, developer, toner container, image forming apparatus, image forming method, and process cartridge

Disclosed is a fixing liquid containing a softening agent that softens resin-containing fine particles by dissolving or swelling at least a part of the resin; a C12-C18 fatty acid; and a C12-C18 fatty acid salt. The fixing liquid is mixed with water serving as a dilution solvent.

Fixing liquid, fixing method, fixing unit, image forming method, and image forming apparatus

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Kanagawa, Japan

Yasuo Katano