Patent ID: 8023779

Claim:
An optical touch panel comprising: a coordinate input region; a light-emitting element which emits light in a near-infrared region; a light-receiving element which receives light in visible and near-infrared regions; a light-emitting sided-optical waveguide connected to the light-emitting element and having an output end; and a light-receiving sided-optical waveguide connected to the light-receiving element and having an input end, wherein the output end of the light-emitting sided-optical waveguide and the input end of the light-receiving sided-optical waveguide are located on opposite sides of the coordinate input region; the light-receiving sided-optical waveguide has an organic colored layer provided on at least part of a surface thereof; and the organic colored layer has a lower light transmittance in a visible light region than in a near-infrared region.