Patent ID: 7834303
Filing Date: 2010-11-16
Classification: F24S,G01S,H01L,H02S,Y02E

Abstract:
1. A system for concentrating sunlight for energy recovery, storage, or production, said system comprising: an array of reflective elements; at least two photodetectors; a differential tracker; a tracking and control processor; an X-direction control processor; a Y-direction control processor; and a target; wherein each of said array of reflective elements comprises: a rigid slab; a tilt mechanism; wherein said tilt mechanism comprises: an X-direction actuation mechanism; a Y-direction actuation mechanism; wherein said two photodetectors are located at a distance from each other; wherein said target converts sunlight to other forms of energy; wherein said rigid slab comprises a conductive material that has a reflective top surface; wherein said tilt mechanism tilts said rigid slab; wherein said two photodetectors are connected to said differential tracker; wherein said differential tracker generates a differential signal or adjustment signal related to or proportional to the signals from said two photodetectors; wherein said differential signal is fed to said tracking and control processor; wherein said tracking and control processor generates an X-signal and a Y-signal that is fed to said X-direction control processor and said Y-direction control processor, respectively; wherein said X-direction control processor generates −X and +X signals; wherein said Y-direction control processor generates −Y and +Y signals; wherein said −X and +X signals are fed to said X-direction actuation mechanism; wherein said −Y and +Y signals are fed to said Y-direction actuation mechanism; and wherein said rigid slab is tilted by said X-direction actuation mechanism and said Y-direction actuation mechanism.