Imagine
giving a presentation that is projected on a conference room wall via
your cell phone! Such a technology may be on its
way, thanks to a new light-bending silicon chip developed by researchers.
The
light-bending silicon chip from at California
Institute of Technology (Caltech) researchers acts as a lens-free projector
and could one day end up in your cell phone. The new chip uses integrated optical phased
array (OPA) to project the image electronically with only a single laser diode
as light source and no mechanically moving parts.