Patent ID: 8783971

Claim:
An optical transmission apparatus comprising: a first gradient index lens connected to an end of an optical transmission line; an optical receiver that receives light, the optical receiver being provided to an electronic device, the electronic device being mounted on an intermediate substrate, the intermediate substrate being mounted on a wiring substrate, and the intermediate substrate having a through-hole penetrating therethrough in a stacking direction with respect to the wiring substrate; a second gradient index lens arranged between the first gradient index lens and the optical receiver, and at least partly arranged in the through-hole of the intermediate substrate; and a stopper that positions the second gradient index lens with respect to the optical receiver, the stopper being arranged at an end of the through-hole of the intermediate substrate, the end being adjacent to the electronic device, wherein the first gradient index lens and the optical transmission line are arranged in a depression formed in a surface of the wiring substrate that faces the intermediate substrate.