Switchable near-eye integral imaging display with difunctional metalens array

摘要

A difunctional metalens array is proposed by combining geometric phase and propagation phase for near-eye integral imaging display. We present the systematic design principle of the difunctional metalens array. The focal length and pitch of the metalens array can be switched based the polarization state of the incident light. Thus, the viewing resolution and diameter of exit pupil can be tuned. Microscopic electromagnetic simulation and macroscopic ray tracing simulation results show the effectiveness of the proposed method.