Dai Nippon Printing Co., Ltd.

Canon Kabushiki Kaisha

Kabushiki Kaisha I.s.t.

Other

Q.p. Corporation

Masahiro Goto

Hiroshi Sekiguchi

Takahiro Inoue

Toshio Miyamoto

Koichi Hiroshima

Koichi Suwa

Shinichi Tsukida

Manabu Takano

Satoru Izawa

Junichi Kato

Hiroshi Yamamoto

Makoto Takeuchi

Yoji Serizawa

Daijiro Kodama

Yozo Hotta

Masahiko Suzumi

Yukihide Ushio

Akio Noguchi

Tsukasa Kuge

Wataru Tokuhara

Masaki Ojima

Koichi Tanigawa

Seiji Uchiyama

Kazuro Yamada

Shimpei Matsuo

Isamu Sakane

Yuki Katsura

Katsunori Takahashi

Hideyuki Yano

Hiroto Hasegawa

Hiromichi Yamada

Hitomu Watanabe

Kumpei Oda

Yuko Ohkama

Makoto Honda

Yasushi Sato

Hiroshi Sasame

Tatsunori Ishiyama

Tomoya Kawashima

Kumiko Kambara

Eiji Asano

Yuko Okama

Yoshiki Takahashi

Yukio Taniguchi

Tatsuya Kobayashi

Hiroshi Hashimoto

Shunji Nakamura

Keiji Kashima

Kazuo Kishino

Shunichi Masuda

Takashi Nakahara

Norihito Naito

Eiji Uekawa

Tetsuo Saito

Koji Nihonyanagi

Kenjiro Hori

Junji Araya

Kenji Kanari

Masaaki Sakurai

Akira Hayakawa

Mitsuru Iida

Takao Aoki

Hideaki Kobayashi

Satoshi Akiyama

Yoshiki Yoshida

Yohji Tomoyuki

Kouichi Okuda

Yasuyuki Oyagi

Masami Takeda

Toshio Yoshimoto

Kenji Nagata

Futoshi Osawa

Kenji Takeda

Kazunobu Ogawa

Michio Shigenobu

Tetsuya Sadahiro

Yoshimi Kuramochi

Kouichi Suwa

Yuko Tanaka

Fumitaka Aoki

Akiko Tomita

Hirokazu Ikenoue

Marii Nishikawa

Hiroyuki Takeda

Iichiro Yamamoto

Yu Morioka

Junichi Sawanobori

Toshihiko Yamanaka

Hiromichi Tsujii

Hiromiichi Yamada

Akiko Goto

Saturo Izawa

Yukiyoshi Kobayashi

Shunsuke Wakami

A planar light source device includes a light diffusing portion and a light reflecting portion in this order. The light diffusing portion has light transmissivity and light diffusivity. Reflectance of the light reflecting portion with respect to light of a particular wavelength entering at an angle of incidence of 0° is 80% or higher. The reflectance of the light reflecting portion with respect to at least part of light of the particular wavelength entering at an angle of incidence of which an absolute value is greater than 45° is less than 50%.

Diffusing member, manufacturing method of diffusing member, planar light source device, display device, and dielectric multilayer film

This reflective screenreflects a part of image light beam projected from an image source LS, to display an image. The reflective screenis provided with: a first optical shape layerwhich has optical transparency and has a plurality of unit optical shapesarranged on a rear surface thereof; and a reflective layerwhich is formed in at least some of the unit optical shapesand by which a part of incident light is reflected and at least the other part of the incident light is transmitted, wherein a light diffusing action in the direction in which the unit optical shapesare arranged is larger than a light diffusing action in a direction perpendicular to the arrangement direction.

Reflective screen and image display device

A display device comprised by being provided with: an image source for emitting image light; a lens for enlarging the image light and emitting the image light to the viewer side; and an optical sheet disposed between the image source and the lens or on the viewer side of the lens, wherein the optical sheet comprises at least two or more layers, a plurality of convex shapes are formed at interfaces between the layers, a difference &#x394;n in refractive index between the layers adjacent to each other satisfies 0.005&#x2264;&#x394;n&#x2264;0.1, a half-value angle &#x3b1; of the optical sheet satisfies 0.05&#xb0;&#x2264;&#x3b1;&#x2264;0.2&#xb0;, and a diffusion angle &#x3b2; of the optical sheet at which a maximum brightness becomes 1/20 satisfies &#x3b2;&#x2264;5&#xd7;&#x3b1;.

Display device

A semi-transmissive reflection sheet is provided, including a first optical shape layer including unit optical shapes, and a second optical shape layer laminated on the first optical shape layer from a side of a surface formed by the unit optical shapes. The unit optical shape has a first surface that is inclined with respect to a light emergent side surface of the second optical shape layer. The light emergent side surface is opposed to the first optical shape layer. The unit optical shape also has a second surface that is not parallel to the light emergent side surface. A reflection layer that reflects at least a part of image light traveling in the semi-transmissive reflection sheet is provided on the first surface.

Semi-transmissive reflection sheet, light guide plate and display device

A light guide plate has a light exit surface, a back surface opposed to the light exit surface, and a light entrance surface consisting of at least part of a side surface. The light guide plate also has a body portion, and a light exit-side layer formed from an ionizing radiation curable resin. The light exit-side layer includes an optical element portion which defines the light exit surface. The optical element portion includes unit shaped elements arranged in one direction intersecting a light guide direction, each unit shaped element extending linearly in a direction intersecting the one direction.

Light guide plate, method for producing light guide plate, surface light source device, and liquid crystal display device

A light guide plate includes an extracting light guide layer having a pair of main surfaces. The extracting light guide layer includes a base portion having a pair of main surfaces, and a plurality of light diffusing portions provided in the base portion. The light guide plate can obscure extracting elements for extracting light.

Light guide plate and illumination apparatus

A light guide platehas a number of back surface-side unit optical structuresarranged in a back surfacealong a light guide direction. Each back surface-side unit optical structureis tapered in a direction away from a light exit surface, and has a first inclined surfacelying on the light entrance surface side, a second inclined surface () lying opposite the first inclined surface and which totally reflects at least part of incident light, and a top surface regionlying between the first inclined surfaceand the second inclined surface, and located farthest from the light exit surface. The top surface regionseach include a plurality of surfacestowhich are parallel to the light exit surfaceand have different heights 'h' in the direction away from the light exit surface

Light guide plate, surface source device and transmission-type display device

A light guide plate includes a body portion, and a plurality of unit shaped elements defining a light exit surface and arranged on one-side surface of the body portion side by side in an arrangement direction intersecting a light guide direction. Each unit shaped element extends in a direction intersecting the arrangement direction. A light exit surface angle &#x3b8;a, which is the angle of the contour of each unit shaped element with respect to the one-side surface, is more than 10&#xb0; and not more than 30&#xb0; in a zone of the contour of each unit shaped element, the width of the zone along the arrangement direction being not less than 35% and not more than 70% of the full width of the unit shaped element.

Light guide plate, surface light source device, and display device

An optical module includes a polarizing plate and a light emitter disposed in a position facing the polarizing plate. The polarizing plate includes a polarizer and a protective film joined to the polarizer. The protective film has a light control function that changes the traveling direction of light. The light emitter is disposed in a position directly facing the protective film of the polarizing plate.

Optical module and display device

A light guide plate includes a body portion, first unit optical elements extending on the body portion in the light guide direction, and second unit optical elements disposed in between the first unit optical elements on the body portion. The width of each first unit optical element gradually decreases from that at the center to that at each end in the light guide direction. The ratio of the height to the width in each first unit optical element at the center is higher than the ratio of the height to the width in each second unit optical element.

Light guide plate with tapering unit optical elements

An optical sheet is incorporated in a direct type surface light source device including a light source and is configured to allow light emitted from the light source to exit after changing a travel direction of the light. The optical sheet has a light exiting side lens part including unit lenses juxtaposed to one another and each unit lens is convex toward a light exiting side. A light scattering layer, configured to scatter the light, is provided to each unit lens. The light scattering layer extends along a light exiting side surface of each convex unit lens and constitutes the light exiting side surface of the unit lens. A thickness of the light scattering layer around an apex portion of each unit lens is greater than the thickness of the light scattering layer around each end portion of the unit lens.

Optical sheet, surface light source device, and transmission display device

An array-type display apparatus includes display devices each including a display section and a non-display area located around the display section, and transparent plates disposed on the viewer side. Each transparent plate has: a light exit-side deflection portion, provided in a position corresponding to the non-display area, for allowing at least part of light from the display section to exit the transparent plate in the front direction of the display section; and corner deflection portions, provided at the corners of the viewer-side surface, for allowing at least part of light that has passed through the transparent plate to exit it in the front direction. The width of the light exit-side deflection portion is larger than the width of the non-display area.

Array-type display apparatus

An optical member includes a first optical sheet, and a second optical sheet disposed on the light exit side of the first optical sheet. The optical sheets each include a body portion, and unit shaped elements arranged side by side on the body portion. The ratio of the height of the unit shaped elements relative to the arrangement pitch of the unit shaped elements in the first optical sheet is smaller than that in the second optical sheet.

Surface light source device, optical member, and display device

Growing community of inventors

Tokyo, Japan

Masahiro Goto