Kabushiki Kaisha Toshiba

Toshiba Lighting & Technology Corporation

Harison Toshiba Lighting Corporation

Toshitake Kitagawa

Naotada Okada

Takayoshi Fujii

Makoto Sakai

Shinji Saito

Kei Kaneko

Rei Hashimoto

Hiroki Iwanaga

Haruhiko Okazaki

Taisuke Sato

Tsutomu Kakuno

Daigo Suzuki

Hidefumi Yasuda

Michinobu Inoue

Yuko Kato

Kazufumi Shiozawa

Toshihiro Kuroki

Tomoko Morioka

Ryuji Tsuchiya

Hirozumi Nakamura

The present embodiment provides a composition containing a rare earth complex and a fluorine-based solvent, which can also be used in a fluorescent flaw inspection method. A rare earth complex-containing composition according to the present embodiment is a rare earth complex-containing composition that contains a rare earth complex containing: a rare earth ion; two or more phosphine oxide ligands having different structures; and a β-diketone ligand, the rare earth complex being dissolved in a fluorine-based solvent. The present embodiment also relates to a fluorescent flaw inspection method using the same.

Rare earth complex-containing composition and fluorescent penetrant inspection method using same

According to one embodiment, a light emitting device includes a base, a light emitting element, and a fluorescent body-containing layer. The light emitting element is installed on the base, has an upper surface and a lower surface, and includes a light emitting unit on the upper surface. The fluorescent body-containing layer is provided on the light emitting element and has a lower surface having an area smaller than an area of the light emitting unit and an upper surface having an area larger than an area of the light emitting unit.

Light emitting device

A lens includes a first lens section and a second lens section, which are integrally formed. The first lens section is formed in a hemispherical shell shape including a first recess opened toward one side of an optical axis direction in which light from a light source is made incident. The second lens section is formed in a hemispherical shell shape including a second recess opened toward the other side of the optical axis direction.

Bulb-type lamp

A self-ballasted lamp includes a base body, a light source unit attached to one side of the base body, a lens attached to the light source unit, a cap provided on the other side of the base body and a lighting circuit arranged in the space provided by the base body and the cap. The light source unit includes a light source constituted by semiconductor light emitting elements. The lens has a lens body facing the light source and an attachment leg for attaching the lens body to the light source unit. A claw portion to be secured to the light source unit can be provided on the attachment leg.

Self-ballasted lamp and lighting fixture

According to one embodiment, a semiconductor light emitting device includes a substrate, a first semiconductor layer, a light emitting layer, a second semiconductor layer, and a translucent electrode. The substrate includes a first region provided along periphery of a first major surface and a second region provided on center side of the first major surface as viewed from the first region. The first semiconductor layer is provided on the first major surface of the substrate. The light emitting layer is provided on the first semiconductor layer. The second semiconductor layer is provided on the light emitting layer. The translucent electrode is provided on the second semiconductor layer. A reflectance in the second region is higher than a reflectance in the first region.

Semiconductor light emitting device and method for manufacturing semiconductor light emitting device

A backlight for a liquid crystal display device includes a plurality of point light sourcesarranged linearly, a light guide platehaving a light incident surface, a reflection surfaceand a light emitting surfacefor emitting the light reflected by the reflection surface. A light scattering patternis formed on the reflection surface. A light control patternis formed on the reflection surfaceat almost entire portions except for the light scattering patternis formed for reflecting the light introduced and for outputting from the light emitting surface. A pattern less area is formed on the reflection surfaceat a boundary portion between the light scattering patternand the light control pattern

Backlight for liquid crystal display device

An illumination apparatus includes: a light guide plate composed of a plurality of aligned blocks; and a plurality of light sources, each being provided for one of the blocks and emitting light to the one block. A gap of 0.1 microns or more is formed in at least part of a region between the adjacent blocks. An inside of the gap serves as an air layer.

Illumination apparatus comprising a light guide plate divided by wedge-shaped grooves having an apex angle of 15 degrees or less and a ratio of depth to thickness in a range of 0.4 to 0.7

The backlight device includes a plurality of packages, and a light guide plate. The package includes a housing for package, and a plurality of light sources. The housing for package includes a tubular part having a wall surrounding the circumference, a bottom wall provided at one end of the tubular part, and a passing part provided at the other end of the tubular part for passing the light from inside to outside of the tubular part. The plurality of light sources are contained in the housing for package and disposed in the bottom wall, and emit light. The plurality of packages are arrayed in one direction. At least part of the layout of light sources relative to the incident plane is different from mutually adjacent packages.

Backlight device and liquid crystal display device

A lens comprises a single lens, both surfaces of the lens is a meniscus-shaped and aspheric lens, and side surface side thereof is a convex surface, and, when a refractive index of the lens is represented by n, a central thickness thereof is represented by t, a radius of curvature of a concave face thereof is represented by r , the radius of curvature of the convex face thereof is represented by r , and a focal length thereof is represented by f, the lens satisfies the following equations:

Growing community of inventors

Kanagawa-ken, Japan

Toshitake Kitagawa