Optical board, method for manufacturing the same, and optical module structure

A method for manufacturing an optical board comprising:

• a first step of forming a first metal layer on a first main plane of a substrate comprising a plate-shaped resin as well as forming a metal layer on a second main plane;
• a second step of partially removing the first metal layer to expose a strip-shaped portion;
• and
• a third step of irradiating laser beam obliquely to the exposed strip-shaped portion, to form an optical fiber receiving portion and an inclined plane at an end of the optical fiber receiving portion.

An optical module structure, comprising:

• an optical board comprising:
• a substrate including a plate-shaped resin including a first main plane and a second main plane facing each other, and a slit-shaped optical fiber receiving portion which penetrates between the first main plane and the second main plane in a thickness direction;
• a metal layer provided on the second main plane;
• and
• a wiring pattern consisting of metal and provided on the first main plane;
• and
• and a photoelectric conversion device for converting an optical signal to be transmitted through an optical fiber into an electric signal or an electric signal into the optical signal,
• wherein an inclined plane is provided at an end of the optical fiber receiving portion in the substrate, a tilt angle of the inclined plane with respect to the first main plane is an obtuse angle, and a reflective layer is provided on the inclined plane for reflecting a light output from an optical fiber received in the optical fiber receiving portion toward the first main plane,
• wherein the photoelectric conversion device is mounted on the first main plane, to cover the inclined plane.