Sanyo Electric Co., Ltd.

Nsk-warner K.k.

Samsung Electronics Co., Ltd.

Nippon Seiko Kabushiki Kaisha

Sanyo Electronic Co., Ltd.

Nippon Seiko K.k.

Yoshihiro Yokote

Takashi Ikeda

Hideyuki Kanayama

Takashi Miwa

Ryuhei Amano

Kazuhiro Arai

Shinya Matsumoto

Shouichi Yoshii

Yasuo Funazou

Michihiro Okuda

Haruhiko Murata

Kazuo Yamamoto

Katsutoshi Sasaki

Atsushi Sato

Makoto Maeda

Toshiya Iinuma

Koji Ishii

Mineki Taoka

Hideki Imamura

Yuji Tanaka

Yoshitaka Kurosaka

Masutaka Inoue

Osamu Kawai

Tadao Yagi

Takaaki Abe

Shunichi Kishimoto

Tatsuhiro Suwa

Nobuji Sakai

Osamu Konuma

Yoshito Hashimoto

Shigeto Kobori

Tomomichi Kanda

Dai Aoki

Ryoko Kubo

Kazuki Hashizumi

Tsubasa Fujiwara

Reina Iwasaki

Keietsu Sato

Kazutaka Tomite

Atsuki Ueda

Nobuyuki Kondou

A light-diffuser includes a transparent resin and transparent particles dispersed in the transparent resin. The transparent resin has a refractive index different from that of the transparent particles, and at least one portion of an outer perimeter of each of the transparent particles, respectively, is made compatible with the transparent resin disposed in the vicinity of the transparent particles, respectively.

Light-diffuser, light diffusing adhesive, light diffusing hard coat member, light diffusion film, and image forming apparatus including light diffusion film

An optical member, a polarization member, and a display device are provided. The optical member includes a substrate, and a functional layer provided on the substrate, the functional layer including a high refractive layer and a low refractive layer, wherein the high refractive layer has a higher refractive index than that of the substrate and a diffraction grating structure, and the low refractive layer has a lower refractive index than that of the high refractive layer, wherein an interface between the substrate and the high refractive layer and an interface between the high refractive layer and the low refractive layer are in states in which components of the respective layers with the respective interfaces therebetween are compatible with each other.

Optical member, polarization member, and display device

Provided are a light emitting diode capable of improving contrast, a method for manufacturing a light emitting diode, a light emitting diode display device, and a method for manufacturing a light emitting diode display device. The light emitting diode according to an embodiment comprises a package substrate having an electrode provided therein; a light emitting diode chip provided on the package substrate; a power line electrically connecting the light emitting diode chip to the electrode; and a black layer covering the electrode including a part connected to the power line.

Light emitting diode, method for manufacturing light emitting diode, light emitting diode display device, and method for manufacturing light emitting diode display device

The present invention provides a light guide plate for emitting light radiated from a light source disposed at a side of the light guide plate. The light guide layer has a light incidence side for internally introducing light emitted from the light source at the side thereof; a polarization separation layer comprising a first matrix layer and a first fiber having birefringence and disposed more toward the light emission side than the light guide layer; a low refractive index layer having a lower refractive index than the refractive index of the first matrix layer; and an angle improvement layer comprising a second matrix layer having a second fiber disposed inside the second matrix layer.

Light guide plate, planar light apparatus, and display device

A light guide panel includes: a light guide layer having a light incident surface; a polarization separation layer configured to select a desired polarization among light emitted from the light guide layer and to emit light having the polarization; and a light homogenization layer including a plurality of fibers and a supporting medium of the fibers, the light homogenization layer configured to diffuse and scatter light incident on the light guide layer into the light guide layer. The polarization separation layer includes: a plurality of first fibers having birefringence; and a first supporting medium that is isotropic and configured to support the first fibers. The refractive index of the first supporting medium corresponds to at least one of two different refractive indices of the first fibers. The light homogenization layer includes: a plurality of second fibers having birefringence; and a second supporting medium that is isotropic and configured to support the second fibers.

Light guide panel, surface light source apparatus including light guide panel, and flat panel display including surface light source apparatus

A projection-type image display device includes an image light generator configured to generate image light, a projection optics configured to project the image light onto a screen. The projection optics includes a reflection mirror configured to reflect the image light toward the screen, the image light outputted from the image light generator. A projection-type image display device includes a protective cover provided on an optical path of the image light reflected by the reflection mirror. The protective cover has a transmissive region transmitting the image light reflected by the reflection mirror.

Projection-type image display device and projection-type image display system

An optical device includes a main body having a light incident surface, a light emitting surface provided facing the light incident surface, and a light-reflecting side surface provided from a periphery of the light incident surface to a periphery of the light emitting surface. In the optical device, the light incident surface, the light emitting surface and the light-reflecting side surface are mirror-finished, and a supporting portion configured to support the main body is provided on the light-reflecting side surface.

Optical device and projection-type image display apparatus

An image display device includes a light source which emits laser light; an optical element which is operable to switch between a first state for reducing a coherence of the laser light and a second state for substantially maintaining the coherence of the laser light; a switching control circuit which controls the optical element; an imager which modulates the laser light transmitted through the optical element; and a modulation control circuit which controls the imager based on an image signal. The modulation control circuit causes the imager to render an image pattern for generating an image by changing alight amount at each pixel position when the optical element is in the first state, and causes the imager to render a hologram pattern for generating an image by diffraction when the optical element is in the second state.

Image display device and portable terminal device

An illumination apparatus includes; a first solid-state light source, a second solid-state light source, a first arrangement member provided with a first arrangement surface, a second arrangement member provided with a second arrangement surface, an optical unit configured to reduce a dispersion angle of a light beam. The first solid-state light source emits a light beam having a first directivity. The second solid-state light source emits a light beam having a second directivity greater than the first directivity. A distance from the second arrangement surface to the second light-entering surface is longer than a distance from the first arrangement surface to the first light-entering surface.

Illumination apparatus and projection display apparatus

There are provided a write light valve for generating image-writing light by modulating write light, a driver for writing images into the write light valve based on image data, read light valves for each color for generating respective color image lights by modulating each received color illumination light, an imaging lens group for guiding the image-writing light emitted from the write light valve to the respective read light valves, a dichroic cube for combining together color image lights emitted from the respective read light valves, a projection lens for projecting each color image light combined together. The imaging lens group has a distortion aberration which reduces or cancels out a distortion aberration of the projection lens.

Projection type video display

A projection lens unit and a projection mirror unit are moved relative to an illumination optical system, between a first position where an image is projected in a shape that is longer along a direction of projection onto a projection plane and a second position where an image is projected in a shape that is longer along a direction perpendicular to the direction of projection onto the projection plane. When the projection lens unit and the projection mirror unit are located in the first position, a vertically long image is projected onto the projection plane (portrait display). In this state, when the projection lens unit and the projection mirror unit are moved to the second position, a horizontally long image is projected onto the projection plane (landscape display).

Projection display device in which positions of projection lens unit and projection mirror unit relative to illumination optical systems are switched

An illumination device includes a light source part for emitting light with an intensity distribution approximately uniform in a first direction and a fly-eye lens into which the light is entered. The light source part and the fly-eye lens are arranged such that the first direction is inclined with respect to vertical and horizontal directions of arrangement of lens cells in the fly-eye lens. Since illumination light is entered into the fly-eye lens in a state of inclining with respect to the fly-eye lens, the number of superimposition patterns on the fly-eye lens is increased and illuminance non-uniformity in illumination light is suppressed.

Illumination device and projection display device

An optical device includes a light source, a light valve and a projection lens configured to enlarge an image to be displayed on the light valve. The light valve is disposed in the vicinity of an object plane of the projection lens. The light source illuminates a peripheral portion more brightly than an optical axis portion, in a plane parallel to the object plane located in the vicinity of the object plane of the projection lens. The optical axis portion is a portion where an optical axis passes through and the peripheral portion is a portion located in the periphery of an optical axis portion.

Optical device and projection type video display including optical device

Growing community of inventors

Yokohama, Japan

Yoshihiro Yokote