Sanyo Electric Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Matsushita Electric Industrial Co., Ltd.

Matsushita Electronics Corporation

Nec Corporation

Sanyo Electronic Co., Ltd.

Ricoh Optical Industries Co., Ltd.

Vision3d Technologies, LLC

Sakai Chemical Industry Co., Ltd.

Takashi Ikeda

Hideyuki Kanayama

Junji Kojima

Ryuhei Amano

Yoshihiro Yokote

Makoto Maeda

Takashi Miwa

Yoshitaka Kurosaka

Masafumi Tanaka

Toshiyuki Iwao

Kohichi Morimoto

Shigekazu Yamagishi

Koji Ishii

Kiyoshi Ikeuchi

Ken Mashitani

Haruhiko Murata

Kazuhiro Arai

Shinya Matsumoto

Yasuo Funazou

Shinichi Okuno

Shunichi Kishimoto

Takaharu Adachi

Takahisa Ando

Yusaku Nishikawa

Koichi Morimoto

Toshio Obase

Naohiro Mikamoto

Goro Hamagishi

Yukio Mori

Satoshi Takemoto

Toshiya Iinuma

Toshiyuki Okino

Haruo Yamazaki

Katsumi Terada

Yoshiro Ogata

Teruhiro Yamada

Osamu Nagase

Shouichi Yoshii

Yasuo Funazo

Yoshitsugu Kohno

Yusuke Itoh

Mineki Taoka

Kiyoko Tsuji

Azusa Takeuchi

Akira Tanaka

Seiji Okada

Masutaka Inoue

Yukinori Kuwano

Akihiro Maenaka

Susumu Tanase

Atsuki Terabe

Hiroki Sugiyama

Minoru Takahashi

Manabu Okuno

Toshikatsu Umaba

Hideto Fujita

Hidezoh Akutsu

Keiichi Kanatani

Masahiro Sakata

Daisuke Takemori

Shugo Yamashita

Yoshiki Tanaka

Hidekazu Uchida

Kazuki Hashizumi

Kenji Tateishi

Kazutaka Tomite

Kazuhiko Takeuchi

Hiroyuki Yagi

Eiichi Nakazawa

Tomohiko Iwasaki

Tadahiko Aiba

Shigeo Yoshida

Johji Ikeda

Kensuke Konishi

Kazuhisa Takahashi

Taiki Bessho

Yasuto Shiroi

Masato Arisawa

Keietsu Sato

A phosphor wheel device includes a motor having a rotation shaft, a phosphor wheel substrate attached to one end side of the rotation shaft, and a balancer fixed to the phosphor wheel substrate. The balancer has at least one opening that is open to an outside of the phosphor wheel device.

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

A wavelength conversion element includes a first phosphor region and a second phosphor region. The second phosphor region is disposed in a thickness direction of the first phosphor region and has a phosphor particle with a particle size different from a particle size of a phosphor particle positioned in the first phosphor region.

Wavelength conversion element, phosphor wheel, light source device, and projection display apparatus

A phosphor wheel of exemplary embodiment in the present disclosure includes a substrate, a phosphor region circularly provided on one surface of the substrate, a light processing region circularly provided on an other surface of the substrate and entered by incident light, a light processing body provided in the light processing region, a light-transmissive region provided in the substrate, and a drive device rotating the substrate.

Phosphor wheel including a light absorption processing body provided in a light processing region, light source device including the phosphor wheel, and projection display apparatus including the phosphor wheel

A light source device includes a phosphor wheel, a light source, a color separating-and-mixing element, and a light-guide optics. The phosphor wheel includes a base plate having a first light passage area and a second light passage area as a pair of light passage areas being annularly and point symmetrically arranged with respect to a center of the base plate, a phosphor area annularly formed on the base plate, and a motor that rotates the base plate. The color separating-and-mixing element disposed between the light source and the phosphor wheel changes a direction of traveling of fluorescence created as a result of light having being incident on the phosphor area and been converted in wavelength. The light-guide optics is provided to cause light from the light source to travel through the first light passage area, then through the second light passage area, and finally enter into the color separating-and-mixing element.

Light source device and projection display apparatus

A phosphor wheel of a first exemplary embodiment in the present disclosure includes a base plate, an annular phosphor provided on the base plate, and a reflective coating provided on a partial area of the annular phosphor. Further, a phosphor wheel of a second exemplary embodiment includes a base plate, an annular phosphor layer that is provided on the base plate and constituted by a plurality of phosphor segments, and a reflective coating provided on a partial area of the annular phosphor layer.

Phosphor wheel, light source device, and projection display apparatus

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 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

An image display unit, such as a projection-type image display apparatus, displays a first image and a second image, having a predetermined parallax relative to the first image, onto a predetermined display region by dividing the first image and the second image temporally or spatially. First eyeglasses are to be worn by a first viewer to see the first image and the second image displayed on the display region. Second eyeglasses are to be worn by a second viewer to see the first image and the second image displayed on the display region, and the second viewer faces the first viewer in a direction parallel to the plane of display. The first eyeglasses perform a function of having the right eye of the first viewer see the first image and having the left eye of the first viewer see the second image. The second eyeglasses perform a function of having the right eye of the second viewer see the second image and having the left eye of the second viewer see the first image.

Stereoscopic image display system and projection-type image display apparatus

An image signal storing unit stores an image signal provided from the outside. An image processing unit appropriately processes the image signal stored in the image signal storing unit in accordance with the instruction from an adjusting unit. A projecting unit projects, onto a display area, light corresponding to an image created by the image processing unit. A display size determination unit computes the display size of the picture plane displayed on a screen based on an image captured by the camera provided adjacent to the projection-type video-image display device. The display size determination unit then determines whether or not the display size of the picture plane is equal to or larger than a predetermined upper-limit size.

Stereoscopic display device projecting parallax image and adjusting amount of parallax

Disclosed are a projection display apparatus and a projection optics provided in the projection display apparatus. The projection optics has a refractive optics and a reflective optics. In the refractive optics, a lens (non-circular lens) provided on a reflective optics side has a non-circular shape forming part of an imaginary circular region whose center is an optical axis center of the refractive optics. In other words, the non-circular lens has a shape of a cut-out portion of an imaginary circular lens having an optical axis center coinciding with the optical axis center of the refractive optics.

Refractive optics and projection display apparatus

Growing community of inventors

Osaka, Japan

Takashi Ikeda