Patent ID: 8467640
Filing Date: 2013-06-18
Classification: G02B

Abstract:
1. An optical sensor module, comprising: an optical waveguide unit; and a board unit coupled to the optical waveguide unit and mounted with an optical element; wherein the optical waveguide unit includes an under-cladding layer, a linear core provided on a surface of the under-cladding layer and serving as an optical path, an over-cladding layer covering the core, and a pair of board unit engaging portions provided in laterally opposite portions of the over-cladding layer with respect to a light transmission face of the core; wherein the board unit includes a substrate, an optical element mounted on a predetermined portion of the substrate, a pair of to-be-engaged portions provided at laterally opposite portions of the optical element for fitting engagement with the board unit engaging portions, and a projection protruding laterally from at least one of the to-be-engaged portions and less rigid than the substrate; wherein the optical waveguide unit and the board unit are coupled to each other with the to-be-engaged portions and the projection of the board unit in fitting engagement with the board unit engaging portions of the optical waveguide unit and with the projection being deformed in abutment with a corresponding one of the board unit engaging portions without warpage of the board unit.