Patent ID: 7580605

Claim:
A method of manufacturing a three-dimensional optical waveguide, the three dimensional optical waveguide including at least one optical waveguide, the one optical waveguide guiding light received from an external light source, the method comprising: forming the one optical waveguide within a first glass substrate, the light emitted from the light source being guided through the one optical waveguide; forming a lens integrally within a second glass substrate, the lens focusing light from the one optical waveguide toward an external predetermined light receiving device, the light being guided from the light source to the predetermined light receiving device through the first glass substrate and the second glass substrate; and laminating the second glass substrate on the first glass substrate, wherein a predetermined alignment mark is formed on the second glass substrate during forming of the lens on the second glass substrate, the predetermined alignment mark being utilized for aligning the lens with the one optical waveguide when the second glass substrate is laminated on the first glass substrate.