Fig. 7
From: Broadband Metallic Planar Microlenses in an Array: the Focusing Coupling Effect
a Simulation results of the focal length and FWHM of the microlenses located in the geometrical center of the array with the scale varying from 2 × 2 to 6 × 6 (a = 0 μm, λ = 0.6 μm, d = 2 μm). b The simulated electric-field intensity of the focal plane of the microlens array for n = 3 and the focusing patterns of A–A and B–B cross sections. c The simulated results for n = 6 and the focusing patterns of C–C and D–D cross sections