Design and optimization of microlens array based high resolution beam steering system.
High-resolution imaging and beam steering using 3 microlens arrays (MLA) is demonstrated. Small lateral displacement of one microlens array is sufficient for large angle beam steering. A prescan lens is added to the system to overcome the discrete addressing problem associated with microlens scanning systems. A hybrid method that uses both geometrical ray tracing optimization and physical optics simulation is introduced for the design and optimization of the MLA system. Feasibility of 1880 x 1880 resolution using f/2 aspherical MLAs and 752 x 752 resolution using f/5 spherical MLAs are demonstrated assuming 100 microm microlens pitch and 2mm clear aperture. The system is compact and suitable for endoscopic imaging and agile steering of large beams.
Akatay
Ata
A
Department of Electrical Engineering, Koc University, Sariyer, Istanbul 34450, Turkey.
Urey
Hakan
H