Cross section of a single element of the double-sided MLA. The blue area show a single micro-optical element out of an array of 128×128. The curved surface with a radius of 1935 µm on the frontside constitutes the first microlens, and the small droplet with a radius of 83 µm on the back forms the second microlens. Inserted are the front view, showing the array layout with 100% fill factor, and the rear view, showing the black chromium mask with integrated apertures.