Optical waveguide with light-emitting element and optical touch panel with the same

摘要

In an optical waveguide (10) with a light-emitting element of the present invention, a core (13) includes: a main path (14); and a plurality of branched paths (15) branched at a plurality of branched points (16) from the main path (14). The main path (14) has two sides (14a, 14b) faced to each other, in which one side (14a) has a plurality of branched points (16) and the other side (14b) does not have any branched points. The plurality of branched points (16) are provided on a straight line substantially parallel to a light guiding direction (17) of the main path (14). The width of the main path (14) becomes narrower as the main path (14) moves away from a light-emitting element (11). An angle ¸ formed by the other side (14b) without branched points and the light guiding direction (17) of the main path (14) is 0.3 to 1.7°.