Kyocera Corporation

Tomoya Tabuchi

Daisuke Sakumoto

Akira Miyake

Shingo Matsuura

Kousuke Katabe

Hidetaka Katou

Yuki 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

An illuminating device includes a plurality of light-emitting diodes, a plurality of first light-reflecting parts, and a plurality of second light-reflecting parts. Each of the plurality of first light-reflecting parts has a first light reflecting surface surrounding one of the light-emitting diodes. Each of the plurality of second light-reflecting parts has a second light reflecting surface surrounding one of the light-emitting diodes. The shape of the first light reflecting surface is different from that of the second light reflecting surface.

Illuminating device

A light emitting device includes a base on which a wiring conductor is formed from the top surface to the bottom surface or the side face; a light emitting chip mounted on the top surface of the base and electrically connected with the wiring conductor; a first light transmitting member which covers the light emitting chip; a second light transmitting member provided above the first light transmitting member to cover the first light transmitting member, the second light transmitting member being formed of a light transmitting material containing fluorescent materials for converting in wavelength the light emitted from the light emitting chip; and a third light transmitting member provided between the first and second light transmitting members, wherein the refractive index nof the first light transmitting member, the refractive index nof the second light transmitting member and the refractive index nof the third light transmitting member satisfy the relation: n&#x3c;nand n&#x3c;n, thereby achieving higher light extraction efficiency, higher optical intensity of radiation, and higher axial luminosity and brightness.

Growing community of inventors

Higashiomi, Japan

Tomoya Tabuchi