Omron Corporation

Tetsuro Kubota

Akihiko Sano

Naoki Yoshitake

Junichiro Yamada

Yoshitaka Tatara

A light guide includes a core made of material having translucency and an optical path conversion mirror for reflecting the signal light from the optical element and converting the optical path of the signal light formed on at least the core. The signal light is transmitted through the core by the reflection at the optical path conversion mirror. The optical path conversion mirror surface has an inclination angle &#x3b1; formed with a bottom surface of the core changing in the X-direction in a cross-sectional shape in which the core is cut at a YZ plane, the Y-direction being an optical axis direction of the optical element, the Z-direction being an advancing direction of the signal light of the light guide, and the X-direction being a direction perpendicular to both the Y-direction and the Z-direction.

Light guide, light transmission module, electronic device, and manufacturing method of light guide

A method for producing the optical coupler includes mounting a first conversion element on an upper surface of a first terminal plate, mounting a second conversion element on an upper surface of a second terminal plate, supplying a translucent primary mold resin in a fluidized state to the upper surfaces of the first terminal plate and the second terminal plate such that the first conversion element and the second conversion element are covered with the primary mold resin, curing the primary mold resin while inverting vertically the first terminal plate and the second terminal plate to retain the primary mold resin in a state in which the primary mold resin hangs from the first terminal plate and the second terminal plate, and covering a surface of the primary mold resin with a secondary mold resin having a refractive index lower than that of the primary mold resin.

Growing community of inventors

Kyoto, Japan

Tetsuro Kubota