The lens pitch (center to center distance between microlenses) on this MLA is random which helps minimize diffraction effects that can hurt performance.
"Many light sources emit a light pattern that is hotter in the center and cooler towards the perimeter of the beam. A constant pitch MLA is often used to transform the beam to create a uniform intensity output. However, the constant pitch of standard MLAs creates moire interference.
We reduce moire interference by non-periodic sequence.
Head Up Display etc.