Mitsubishi Electric Corporation

The Furukawa Electric Co., Ltd.

Kohei Tsunetomo

Takashi Ikeda

Junji Yoshida

Naoki Tsukiji

Masahiko Takagi

Makoto Kurihara

Atsushi Kono

Takehiro Hayashi

Takashi Koseki

Naoki Hayamizu

A centrifugal fanincludes a main plate, a shroud, and a plurality of bladesprovided between the main plateand the shroud. The bladeincludes abutting surfaces, andthat respectively abut on abutted surfaces, and another abutted surface formed on at least one of the main plateand the shroud. The abutting surfaces, andincludes projections, andformed thereon, respectively, and extending in a straight or curved line. The abutting surfaces, andand the abutted surfaces, and the other abutted surface are respectively welded to each other by laser beamsandrespectively directed onto and moved along the projectionand the projectionsand

Centrifugal fan, air-conditioning apparatus, and method of manufacturing centrifugal fan

A package accommodates an LD device for emitting laser light with the center wavelength of which is in a range of 1300 to 1440 nm and airtight seals a light path extending from the LD device to an incident end of an optical fiber. The package is filled with a nitrogen gas at a standard atmospheric pressure with the amount of moisture limited to a value lower than 100000 ppm by volume or less. Therefore, the amount of moisture in the light path for laser light within the package is limited to 100000 ppm by volume or less.

Semiconductor laser module, optical measuring method and optical measuring apparatus

Growing community of inventors

Tokyo, Japan

Kohei Tsunetomo