Koito Manufacturing Company, Ltd.

Tokyo University of Science

Akihiro Nomura

Yukihiro Onoda

Hidemichi Sone

Yuzo Maeno

Satoshi Yamamura

Takayuki Yagi

Tsukasa Tokida

Toshiaki Tsuda

Yuichi Shibata

Shogo Sugimori

Kazuhiro Ohkawa

Akira Hirako

A sintered compact includes a wavelength conversion region containing a phosphor material that performs wavelength conversion of primary light and emits secondary light, and a holding region provided to be in contact with the wavelength conversion region. The wavelength conversion region and the holding region are integrated.

Sintered compact and light emitting device

A vehicle lamp includes a semiconductor laser element configured to emit laser light;

Vehicle lamp

In a semiconductor device, a YAG substrate is formed as a single-crystal substrate of any of surface orientations (100), (110), and (111). In the fabrication of the semiconductor device, a TMAl gas is first fed onto the YAG substrate so as to form a nucleation layer made of aluminum, which is a group-III element. Then, an NHgas is fed onto the nucleation layer. This turns the surface of the nucleation layer into a group-V element and then forms a group-III-V compound layer of AlN. Then, a mixed gas of TMAl gas and NHgas is fed onto the group-III-V compound layer so as to form another group-III-V compound layer. Finally, a group-III nitride semiconductor layer is crystal-grown on the group-III compound layer.

Light emitting ceramic substrate including group-III nitride

The light emitting module includes a plurality of light emitting elements; a fluorescent substance resin layer containing a fluorescent substance which is excited by light emitted from the plurality of light emitting elements to emit visible light; a reflective surface configured to reflect light emitted from the plurality of light emitting elements and the fluorescent substance resin layer; and a light guiding body layer provided between the reflective surface and the fluorescent substance resin layer, and configured to guide light emitted from the plurality of light emitting elements or the fluorescent substance.

Light emitting module

Growing community of inventors

Shizuoka, Japan

Akihiro Nomura