Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Shohei Aoki

Yasuhiro Kabetani

Seiji Hamano

Tomotaka Furuta

Nobuo Hara

Takashi Urashima

Provided is a winding apparatus that is provided with a splitter that splits radiant light from a light source unit into measurement light applied to a side face part of a first sheet and a second sheet and reference light applied to a reference surface, an interference detector that detects interference light formed by interference between the reference light reflected by the reference surface and the measurement light reflected by the side face part, a position detector that detects the position of the first sheet and the position of the second sheet on the basis of the detected interference light, and a decision processor that decides the quality of the wound body on the basis of the detected positions of the first sheet and the second sheet.

Winding device, winding method, inspection device and structure manufacturing method in which a position of stuck together first and second wound sheets are detected via interference light generated using reflected reference light from a reference surface

Winding device, winding method, inspection device and structure manufacturing method

A laser welding apparatus includes: a first optical element that coaxially emits, to a welded part, a laser beam emitted from a laser light source and an object beam having a different wavelength from the laser beam; a second optical element that causes the spot diameter of the object beam to be larger than the spot diameter of the laser beam on the welded part; an optical interferometer that emits the object beam to the first optical element, detects through the first optical element the object beam reflected on the welded part, and generates an electric signal based on the detected object beam; and a measuring unit that measures a penetration depth of the welded part based on the electric signal.

Laser welding apparatus

Growing community of inventors

Osaka, Japan

Shohei Aoki