Kyocera Corporation

Kousuke Katabe

Yuki Mori

Akira Miyake

Daisuke Sakumoto

Shingo Matsuura

Masakazu Yasui

Tomoya Tabuchi

Emi Mukai

Takashi Sawai

Nobuyuki Takehashi

Mitsugu Uraya

Yuuki Mori

Masayuki Mori

To improve the luminance of light emitted by a light-emitting device, the light-emitting device includes a base () that has an opening part () constituted by a light-reflecting surface () and a bottom surface (), a light-emitting chip () that is mounted on the bottom surface () of the opening part (), a transparent member () that covers the light-emitting chip (), and an optical member () that is disposed on the transparent member (). The transparent member () is disposed on the bottom surface () of the opening part () in a state where the transparent member () is spaced away from the light-reflecting surface () of the opening part ().

Light-emitting device

A light-emitting device includes a substrate, a pair of electrode layers disposed on the substrate, a light-emitting element disposed between the pair of electrode layers to keep a first space with each of the pair of electrode layers while electrically connecting with each of the pair of electrode layers, and a pair of reflection layers, each extending in overlapping relation from one to the other one of the pair of electrode layers as seen in a transparent plan view. The light-emitting element is disposed between the pair of reflection layers to keep a second space with each of the pair of reflection layers.

Light-emitting device with reflection layers

A light emitting device includes a base, a sub-mount substrate, and a frame member. The light emitting device further includes a light emitting element and a wavelength converting member. The sub-mount substrate is disposed on the base, and has an upper surface made of a ceramic sintered body. The frame member has a light reflecting portion made of porous ceramics, is disposed on the base, and surrounds the sub-mount substrate. The light emitting element is mounted on the sub-mount substrate. The wavelength converting member covers the light emitting element and the light reflecting portion of the frame member.

Light emitting device and illumination device

The present invention relates to a reflective member. The reflective member includes a reflective layer formed to be porous using an inorganic material. The reflective layer has a porosity of 15-43%. The reflective layer is formed by partly combining a plurality of inorganic particles with each other.

Reflective member, light-emitting device using same and illuminating device

A method for determining a mixture composition of a plurality of fluorescent materials includes steps of calculating a first function, calculating a second function and determining a secondary mixture composition of the plurality of fluorescent materials. The first function is calculated by comparing an objective spectrum of an objective light with a reference spectrum of a reference light. The second function is calculated by comparing a primary spectrum of the plurality of fluorescent materials mixed at a primary mixture with the reference spectrum composition. The secondary mixture composition is determined on the basis of the result of comparison between the first function and the second function.

Method for determining mixture composition of fluorescent materials and method for manufacturing light-emitting device

A base structure for a light emitting device includes a supporting device for supporting a light emitting element, a connection device for being electrically connected to the light emitting element, and a filler member. The supporting device includes a metallic material. The connection device surrounds the supporting device and includes a metallic material. The filler member fills a gap separating the supporting device from the connection device.

Growing community of inventors

Higashiomi, Japan

Kousuke Katabe