Omron Corporation

Soken & Chemical & Engineering Co., Ltd.

Yoshihiko Takagi

Masayuki Shinohara

Norikazu Kitamura

Yoshimasa Osumi

Junya Fujita

Jun Kishimoto

Yasuhiro Tanoue

Takeshi Kakinuma

Shohei Hisaki

Takahiro Morichi

Gouo Kurata

Takaaki Suzumura

Eiji Muraoka

Mitsuru Okuda

Masanori Mori

Tsuyoshi Arai

Shogo Ikeda

Norihisa Kanzaki

Masaaki Hiramatsu

Yuji Hirose

Yuto Mori

Takuma Iwase

Tomonobu Kato

Takamitsu Ishikawa

Yuki Yamamoto

Kosuke Sanari

Yoshinori Ito

Atsushi Okano

Tetsuya Minobe

An illumination device includes a transparent light guide plate having an end face being an incident surface and a bend between the incident surface and a distal end face opposite to the incident surface, and a light source facing the incident surface. The light guide plate includes first prisms on a first surface extending from the incident surface to the bend to reflect light from the light source entering the light guide plate through the incident surface and emit light through a second surface opposite to the first surface, and second prisms on a third surface extending from the distal end face to the bend to reflect light from the light source entering the light guide plate through the incident surface and emit light through a fourth surface opposite to the third surface.

Illumination device and exhibition apparatus

An optical device includes: a light guide plate having a group of optical-path deflectors configured to change the optical path of light from a first light source to form an image in the space within a first angle range, and change the optical path of light from a second light source to form an image in the space within a second angle range, wherein the first angle range and the second angle range are separated from each other or adjoining each other.

Light guide plate, vehicle lamp

A light guide plate for presenting a stereoscopic image via parallax includes: a plurality of deflectors arranged in rows parallel to an incidence surface through which light from a light source enters the light guide plate, the light totally reflecting inside the light guide plate while being guided therethrough, the plurality of deflectors including a reflection surface for reflecting and causing an emission surface to emit said light; and the reflection surfaces in a row of the plurality of deflectors are all oriented in the same direction with the orientation of the reflection surfaces changing for each row in accordance with distance from the incidence surface.

Light guide plate, light emitting device, display device and game machine

A display device includes a light guide plate that guides light incident from a first light source to cause part of the light to exit from a light exit surface. The light guide plate includes a first outgoing structure region including a plurality of outgoing structures, and the plurality of first outgoing structures have maximum incident directions that make intensity of light exiting in a predetermined direction largest scattered over a first angle range.

Display device with light guide plate having outgoing structure regions

A light emitting device is provided to a vehicle. The light emitting device includes a display portion and a light emitting portion. The display portion includes a first light source and a light guide plate that guides light from the first light source to form a first image in a space. The light emitting portion includes a second light source and a light emitting region that overlaps with the first image in a vehicle front-rear direction at a position close to the first image and emits light from the second light source to the outside of the vehicle.

Light emitting device

A display switching device () is provided, which switches a display image (P) by switching irradiation of lights from positions of a plurality of light sources (). The display switching device includes: a lens array () in which a plurality of lenses are arranged; and a display part () including a plurality of pixel regions () arranged to include a region through which a light, which is formed by condensing each of the lights emitted from the positions of the plurality of light sources () with each of the lenses of the lens array (), passes. A transmittance in each of the pixel regions () is set corresponding to a predetermined stationary pattern. A total area of the pixel regions () in the display part () is 60% or less of a total area of a sum of the pixel regions () and the pixel surrounding regions ().

Display switching device and switch

A display device includes a transparent light guide plate having an incident surface to display a plurality of patterns viewable in different directions and at least one light source facing a part of the incident surface. The light guide plate includes, on a first surface of the light guide plate, a plurality of prisms arranged along each of the plurality of patterns. The plurality of prisms have, for each pattern, reflection surfaces that reflect light emitted from the at least one light source and entering the light guide plate through the incident surface in a direction in which the pattern is viewable.

Display device and exhibition apparatus

A display device includes a light guide platecapable of displaying a plurality of patterns (-to-) and including an incident surface; a plurality of light sources (-to-) disposed opposite to the incident surface and corresponding to the plurality of patterns; a storageconfigured to store a reference table that represents a relationship between a turn-on state number and a combination of light sources to be turned on among the plurality of light sources for each of a plurality of the turn-on state numbers; and a controllerconfigured to specify the combination of light sources to be turned on by referring to the reference table, the combination corresponding to the turn-on state number included in turn-on control information, and control turn-on and turn-off of each light source according to the combination of the light sources. The light guide plateincludes a plurality of prisms arrayed on one of surfaces of the light guide plate along the plurality of patterns, the plurality of prisms reflecting light toward the other surface of the light guide plate, the light being emitted from a light source corresponding to the pattern and being incident on the light guide plate from the incident surface.

Display device and game machine

To achieve more natural image expression. A display device () is provided with a light guide plate () which displays a predetermined image having a tone caused by changing the amount of light emitted from each of pixel regions including one or more light exit structures (), and the amount of light emitted from the pixel regions displaying the tone in a predetermined range is randomly set so as to be a first light amount value or a second light amount value greater than the first light amount value.

An optical device includes a planar-image forming unit configured to emit light that forms a planar image of a predetermined shape in a space, and an outline-image forming unit configured to emit light that forms an outline image with a light intensity different from the light intensity of the planar image at the outer-edge region of the planar image.

Optical device and method of three-dimensional display

A display device includes a light guiding panelhaving an incoming surfaceformed on one of side surfaces, a plurality of light sources (-to-) respectively corresponding to a plurality of patterns that can be displayed, and a controllerfor controlling on and off of the plurality of light sources. The light guiding panelhas a first reflective surface () formed on the other side surface of the light guiding panelthe first reflective surface reflecting light emitted from a first light source and entering the light guiding panelthrough the incoming surfaceand changing the propagation direction of the light, and a plurality of prismswhich is formed on one surfaceof the light guiding panel, is oriented toward light emitted from a light source corresponding to the pattern, entering the light guiding panelthrough the incoming surfaceand directed to the pattern, and reflects the light so that the light is emitted through the other surfaceof the light guiding panel.

Display device and light guiding panel

A light guide plate formed from a panel transparent to visible light has a first incidence surface provided to form a sidewall of the light guide plate that faces a light source configured to emit visible light, and a plurality of prisms provided in a predetermined region on one surface of the light guide plate. The prisms include a reflection surface that reflects the visible light emitted from the light source and entering the light guide plate from the first incidence surface toward another surface of the light guide plate. The predetermined region is divided into a plurality of local regions corresponding to a plurality of tones in the predetermined region when seen from a predetermined viewpoint, and in each local region, the orientation of the reflection surface of the prisms distributed in the local region is established in accordance with the tone corresponding to that local region.

Light guide plate, display device and game machine

A light guide plate is transparent to visible light and is formed into a plate shape. The light guide plate includes a plurality of prismsprovided in a first regionon one surfaceof the light guide plate, each of the plurality of prismsincluding a reflection surfacethat reflects the visible light, which is emitted from the light sourceand enters the light guide platethrough an incoming surface, toward the other surfaceof the light guide plate. Then, for each of a plurality of first partial regions (-to-) in the first region, at least one of a direction of the reflection surfaceof each prismarranged in the first partial region and a ratio of a total of areas of the reflection surfacesof each prismto the first partial region is set according to an amount of light traveling from the first partial region toward a predetermined viewpoint such that brightness of the first regionchanges spatially irregularly as seen from the predetermined viewpoint.

Light guide plate, display apparatus, and game machine

A display device includes a light guide platehaving at least one incoming surface and a plurality of light sources (-to-) arranged to face any of the incoming surfaces. The light guide platehas a plurality of prismsthat is arrayed along each pattern in a plurality of patterns (to) displayed on one surfaceof the light guide plate and reflects light emitted from a light source corresponding to the pattern and entering the light guide plate through the incoming surface toward a direction within a prescribed range of angles with reference to a direction normal to the other surfaceof the light guide plate. Each prismis formed as a triangular pyramid groove in one surface of the light guide plate, and one of inclined surfaces of the triangular pyramid groove is formed as a reflective surfacethat reflects light emitted from a light source corresponding to a pattern along which the prism is arrayed and entering the light guide plate.

Display device and light guide plate

An optical device includes a light guide plate configured to guide light within a plane parallel to an emission surface, and a plurality of deflectors configured to deflect light guided thereto by the light guide plate, causing light forming an image in a space outside the light guide plate to exit from the emission surface. Each deflector in the plurality of deflectors cause the light to exit from the emission surface toward a direction substantially converging onto a single convergence point or convergence line in the space, or to substantially radiate from a single convergence point or convergence line in the space. The convergence point or the convergence line is mutually different among the plurality of deflectors with a grouping of a plurality of the convergence points or the convergence lines forming the image in the space.

Growing community of inventors

Kyoto, Japan

Yoshihiko Takagi