Patent ID: 7116879
Filing Date: 2006-10-03
Classification: G02B

Abstract:
1. An optical waveguide comprising a bonded member of a core layer and a cladding layer, and being configured so as to guide a portion of an incident light coming into said core layer towards a light emission side thereof, wherein: a light propagation preventive means for preventing a portion of an incident light coming into said cladding layer from propagating therethrough towards the light emission side of the optical waveguide is formed in said cladding layer, and wherein said light propagation preventive means is provided partially between opposing edges or on a diagonal line between opposing angles in a width-wise direction and a thickness-wise direction of said cladding layer, and wherein said light propagation preventive means being provided partially comprises a first continuous layer extending respectively from said opposing edges or from said opposing angles, and a second continuous layer provided inside said opposing edges, so that said first and second continuous layers overlap with each other with respect to a direction of propagation of light.