Patent ID: 8233759
Filing Date: 2012-07-31
Classification: G02B,G06F

Abstract:
1. An optical waveguide comprising: a core having a distal end from which light is emitted or on which light is incident; an under-cladding layer for supporting the core; and an over-cladding layer wherein the core is embedded, the optical waveguide being arranged in contact with a frame body of an optical touch panel, and the over-cladding layer has a convex lens portion having a side sectional shape of substantially a quarter of a circle and a concave portion to be fitted into the frame body of the optical touch panel, wherein the concave portion is located outside a fan-shaped region surrounded by line segments to connect from the center of the distal end of the core to an upper end and a lower end of the convex lens portion of the over-cladding layer and a circle of the convex lens portion.