| 摘要 |
An apparatus, an optical touch panel, a waveguide, and a process for producing a double layered waveguide structure are provided. The apparatus includes a waveguide having a plurality of transmission waveguide elements and a plurality of reception waveguide elements; a light source coupled to the waveguide; a light detector coupled to the waveguide; and a reflector, spaced apart from the waveguide, the reflector reflecting light emitted from the plurality of transmission waveguide elements towards the reception waveguide elements. The waveguide includes a substrate, a first cladding layer, a reception waveguide, a second cladding layer, a transmission waveguide, and a third cladding layer. The optical touch panel includes a waveguide section comprising a waveguide; a mirror; a surface emitting laser; and a detector. |
