| 主权项 |
1. An input device comprising:
an optical waveguide in a sheet form including an under cladding layer in a sheet form, an over cladding layer in a sheet form, and a plurality of linear cores arranged in a lattice form, the cores being held between the under cladding layer and the over cladding layer; a light-emitting element connected to one end surface of the cores of the optical waveguide; and a light-receiving element connected to the other end surface of the cores, wherein light emitted from the light-emitting element passes through the cores of the optical waveguide and is received by the light-receiving element, wherein a surface region of the over cladding layer corresponding to part of the cores arranged in the lattice form of the optical waveguide serves as an input region, wherein a position pressed with a tip input part of an input element in the input region is specified, based on the amount of light propagating in the cores which is changed by the pressing with the tip input part, wherein the cores have an elasticity modulus equal to or higher than those of the under cladding layer and the over cladding layer, and wherein gaps between adjacent ones of the linear cores arranged in the lattice form are in the range of 10 to 300 μm to prevent the cores from being cracked due to the pressing with the tip input part. |
