Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Masa-aki Suzuki

Seiji Nishiwaki

Tsuguhiro Korenaga

Yoshio Kishimoto

Takashi Hashida

Shin-ichi Wakabayashi

Yuka Yamada

Nobuyasu Suzuki

Hidehiro Sasaki

Yasunori Morinaga

Fumihiro Inagaki

Takamasa Ando

Tomoko Suzuki

Masahiro Deguchi

Tatsuya Nakamura

Atsushi Omote

Takayoshi Ueno

Yuka Okada

Jyunpei Matsuzaki

Hideo Nagai

Masao Hiramoto

Akira Taomoto

Eiji Ando

Norihisa Takahara

Tadaaki Ikeda

Yuji Kudoh

Motoshi Shibata

Kazuya Yonemoto

Toyokazu Ozaki

A transparent sheet usable in the state where one of surfaces thereof is adjacent to a light emitting body, wherein the other surface of the sheet is divided into a plurality of tiny areas &#x3b4; having such a size that a maximum circle among circles inscribed thereto has a diameter of 0.5 &#x3bc;m or greater and 3 &#x3bc;m or less with no gap; the tiny areas &#x3b4; include a plurality of tiny areas &#x3b4;randomly selected from the plurality of tiny areas &#x3b4;, and the remaining plurality of tiny areas &#x3b4;; the tiny areas &#x3b4;each include an area &#x3b4;along a border with the corresponding tiny area &#x3b4;, and the remaining area &#x3b4;; the tiny areas &#x3b4;each include an area &#x3b4;along a border with the corresponding tiny area &#x3b4;, and the remaining area &#x3b4;; the height of the tiny areas &#x3b4;is d/2; the height of the tiny areas &#x3b4;is between zero to d/2; the depth of the tiny areas &#x3b4;is d/2; the depth of the tiny areas &#x3b4;is between zero to d/2; and d is in the range of 0.2 &#x3bc;m or greater and 3.0 &#x3bc;m or less.

Sheet, light emitting device, and method for producing the sheet

A surface of a transparent substratewhich is adjacent to a light emitting body has a surface structurethat is defined by dividing the surface into a plurality of linear segments of width w which are inclined so as to extend in a specific direction in a plane of the surface and dividing the linear segments into minute regions aligned along the longitudinal direction of the linear segments such that the largest inscribed circle of the minute regions has a diameter from 0.2 &#x3bc;m to 1.5 &#x3bc;m. Each of the minute regions is formed by a raised or recessed portion formed in the surface of the transparent substrate. The proportion of the raised portions and the proportion of the recessed portions, P and 1&#x2212;P, are determined such that P is in the range of 0.4 to 0.98.

Optical sheet, light-emitting device, and method for manufacturing optical sheet

An imaging photodetection device () includes: a plurality of photodetectors () that are arrayed on a substrate () at least along a first direction; a transparent low refractive index layer () that is formed above the plurality of photodetectors; and a plurality of transparent high refractive index sections () that are embedded in the transparent low refractive index layer along the first direction. On a cross-section of the transparent high refractive index sections orthogonal to the substrate and along the first direction, central axes () of the transparent high refractive index sections are bent stepwise. Light that enters the transparent low refractive index layer and the transparent high refractive index section passes therethrough to be separated into 0-order diffracted light, 1-order diffracted light, and &#x2212;1-order diffracted light. Thereby, improvement in the efficiency of light utilization and pixel densification can be realized.

Imaging device with columnar or plate-like transparent refractive index layers

A sheet of the present invention is a sheet which is to be used such that light from a light emitting body impinges on one of surfaces of the sheet and outgoes from the other surface. The other surface of the sheet includes a plurality of minute regions, a largest inscribed circle of the minute regionshaving a diameter from 0.2 &#x3bc;m to 2 &#x3bc;m. Each of the plurality of minute regionsis adjoined by and surrounded by some other ones of the plurality of minute regions. The plurality of minute regionsinclude a plurality of minute regionswhich are randomly selected from the plurality of minute regionsso as to constitute 20% to 80% of the minute regionsand a plurality of minute regionswhich constitute the remaining portion of the minute regions. Light transmitted through the plurality of minute regionsand light transmitted through the plurality of minute regionshave a phase difference of &#x3c0;.

Sheet and light emitting apparatus

A diffractive optical element () includes a substrate (), a protective film (), and a diffraction grating () disposed between the substrate () and the protective film (), wherein the diffraction grating () is formed of a composite material containing a resin and inorganic particles, a volume ratio of the inorganic particles with respect to the composite material is equal to or smaller than 50% by volume, and the diffraction grating () has a thickness of equal to or smaller than 20 &#x3bc;m. Since the diffractive optical element () uses the composite material containing the resin and the inorganic particles as a material for the diffraction grating (), which is relatively difficult to process, the moldability improves compared with the conventional case of using glass, etc.

Diffractive optical element with improved light transmittance

A diffractive imaging lensincludes a surface on which a diffraction grating pattern is formed. The diffraction grating pattern is formed of a plurality of steps formed concentrically with an optical axis () at a center. The diffraction grating pattern is formed such that a first portion where amounts (di) of the steps are substantially the same in a radial direction of concentric circles and a second portion, outside of the first portion, where amounts (di) of the steps decrease with distance from the optical axisare provided, or such that the amounts (di) of the steps decrease with distance from the optical axisover the entire diffraction grating pattern.

Diffractive imaging lens, diffractive imaging lens optical system, and imaging apparatus using the diffractive imaging lens optical system

The present invention provides a water photolysis system comprising: a casinginto which incident sunlight L can enter from the outside and a photolytic layerwhich is disposed inside the casingwherein the photolytic layerhas a light-transmissive porous materialand photocatalyst particlessupported thereon; a water layercontaining water in its liquid state is disposed below the photolytic layerwith a first spacedisposed between the water layer and the photolytic layer; a sealed second spaceis formed above the photolytic layerin the casingvapor generated from the water layeris introduced into the photolytic layervia the first spaceand the vapor is decomposed into hydrogen and oxygen by the photocatalyst particleswhich are excited by the sunlight L.

Water photolysis system and process

A composite material () includes a resin (), and first inorganic particles () dispersed in the resin and containing at least zirconium oxide. The composite material has a refractive index at the d line nof not less than 1.60 and an Abbe's number &#x3bd;of not less than 20, and satisfies a relationship n&#x2267;1.8&#x2212;0.005 &#x3bd;. This composite material exhibits both a high refractive index and low dispersion in good balance, and has excellent workability. Accordingly, using this composite material makes it possible to realize a small optical component having favorable wavelength characteristics.

Composite material and optical component using the same

A diffractive optical element that can be molded readily, an imaging apparatus incorporating the diffractive optical element, and a method for manufacturing the diffractive optical element are provided. A diffractive optical element () includes a substrate () that is made of a first material containing a resin and has a surface () on which a diffraction grating pattern () is formed, and a coating film () that is made of a second material containing a resin and is disposed so as to be in contact with a portion of the diffraction grating pattern (), and at least one material selected from the first material and the second material is a composite material containing inorganic particles.

Diffractive optical element and method for manufacturing the same, and imaging apparatus using the diffractive optical element

A light-emitting device () having a base () and a light-emitting element () placed on the base () includes a first sealing material layer () covering the light-emitting element () and a second sealing material layer () surrounding a side surface of the first sealing material layer (), wherein the refractive index of the first sealing material layer () and the refractive index of the second sealing material layer () are different from each other. The light-emitting device () is capable of controlling a radiation pattern from the light-emitting element () by controlling the refractive index of the first sealing material layer () and the refractive index of the second sealing material layer (). This can facilitate the miniaturization and reduction in thickness of the light-emitting device (), and prevent the decrease in a light output efficiency of the light-emitting device ().

Light-emitting device

Disclosed is a semiconductor light-emitting device having improved light-extraction efficiency. Specifically disclosed is a semiconductor light-emitting device () comprising a semiconductor light-emitting element (), a phosphor layer () which is so formed as to cover at least a part of the semiconductor light-emitting element (), and an outer layer () which is so formed as to cover at least a part of the phosphor layer (). The phosphor layer () contains a binder () and a phosphor () dispersed in the binder (), and the outer layer () contains a porous material (). Consequently, the semiconductor light-emitting device is improved in light-extraction efficiency.

Semiconductor light-emitting device

The primary object of the present invention is to provide an electrode with which an efficient electrode reaction will occur. The present invention relates to a porous electrode which is an electrode composed of a porous material having electron conductivity, wherein (1) the porous material comprises a three-dimensional skeleton, (2) a substance having one or more proton affinity groups is present on all or part of the three-dimensional skeleton surface, and (3) a catalyst for separating hydrogen into protons and electrons is further included, with the catalyst being supported on the substance.

Porous electrode, and electrochemical element made using the same

Conventional porous carbon materials obtained by carbonizing an organic gel were prone to shrinkage during their manufacture, in the course of which the density rose and the specific surface area decreased. Another problem was that density and specific surface area were difficult to control after an organic gel had already been formed. In the present invention, a carbon material with a large specific surface area is formed by forming a composite porous material having a reticulated skeleton and composed of a dry gel of an inorganic oxide, and taking advantage of the reaction of this dry gel of an inorganic oxide as a structural support. In one method, a carbon material is formed in this reticulated skeleton in a state in which the characteristics of a dry gel of an inorganic oxide with a large specific surface area are maintained. In another method, the specific surface area of a carbon material is further increased by removing the inorganic oxide of the reticulated skeleton in which the carbon material was formed.

Porous material and method for manufacturing same, and electrochemical element made using this porous material

It is a principal object of the present invention to provide a dielectric having a high relative dielectric constant and dielectric loss minimized in high frequency bands. That is, the present invention relates to a composite dielectric comprising conductive particles dispersed in a porous body of inorganic oxide, wherein 1) the relative dielectric constant &#xa5;r of the dielectric in high frequency bands of 1 GHz or more is 4 or more, and 2) the dielectric loss tan&#x3b4; of the dielectric in high frequency bands of 1 GHz or more is 2&#xd7;10or less, and to a manufacturing method therefor.

Composite dielectric and manufacturing method therefor

It is an object of the present invention to provide a porous body containing an oxide semiconductor in which more efficient photocatalytic reactions and photoelectrode reactions occur. The present invention relates to a porous body having a network structure skeleton wherein 1) the aforementioned skeleton is composed of an inner part and a surface part, 2) the aforementioned inner part is substantially made of carbon material, and 3) all or part of the aforementioned surface part is an oxide semiconductor, and to a manufacturing method therefor.

Growing community of inventors

Osaka, Japan

Masa-aki Suzuki