Fig. 2: Simulation results of multifocal reconstruction.

a Actual positions of the simulated microlens focal spots. b Reconstructed image of the simulated microlens array pattern when the pitch is acoustically resolvable. c Reconstructed image of the simulated pattern when the pitch is not acoustically resolvable. d Quantification of the minimum separation distance required to separate two spots in the MFOR-PAMER image at various transducer central wavelengths. Min., minimum; Norm., normalized