US Patent 8096654 Active contact lens

An active contact lens system (100) and method for fabricating an active contact lens (200) are disclosed. The system comprises an active contact lens (110) worn like a conventional contact lens, and comprising a transparent substrate (112) having a circuit formed of one or more of a semi-transparent display (114), a display drive circuit (116), a data communications circuit (118), one or more biosensors (122), an energy transfer antenna (120) and an interconnect network (124). The substrate may be a conventional contact lens material, such as PMMA or RGP, and the display may be formed from a plurality LEDs. A method for fabricating the active contact lens includes fabricating the template (202), forming solder compatible pads (204), assembling the circuit elements (206) and micro-molding the lens (208). The template is fabricated with an interconnect network and shape-specific recesses for receiving the circuit elements. Preferably, the assembly is done using fluidic self-assembly.