Matsushita Electric Industrial Co., Ltd.

Masahiro Kuwabara

Masami Ito

Koji Funami

Seiji Kumazawa

Tomotaka Furuta

Toshiyuki Okada

Yohei Takechi

Yosuke Kawahito

A ratio of a length of resin flow-in to a radius of an optical component is not larger than 0.25, and gas is blown directly against a laser irradiated part radially and diagonally downward from an upside position corresponding to a center of the optical component. A laser line beam having longer sides extending in a direction along an inner wall is cast by a laser radiation device while being moved in the direction of the longer sides.

Optical component unit, laser joining method and apparatus for joining optical component

Positioned on a block is a filter for reflecting light &#x3bb;and transmitting another light &#x3bb;. First and second light guides are positioned on the block in an aligned relation to each other so that their angled ends oppose to each other. An adhesive is applied to the angled ends of the light guides for holding a filter. Light &#x3bb;is introduced in the light guides for adjusting the position of the light guides so that a predetermined amount of light is discharged from the light guide. A light receiver is positioned on the block through the adhesive and then light is introduced in the light guide for adjusting the position of the light receiver relative so that a predetermined amount of light is received by the light receiver. In particular, the adhesive has the same refractive index as the light guides.

Apparatus and method for transmitting and detecting light

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Moriguchi, Japan

Masahiro Kuwabara