1. An apparatus, comprising: an image sensor partitioned into N image sensor regions, wherein the image sensor is attached to a circuit board; a lens array including N lenses disposed proximate to the image sensor, wherein each one of the N lenses is arranged to focus a single image onto a respective one of the N image sensor regions; and a spacer structure stacked between to the lens array and the circuit board to separate the lens array from the image sensor, wherein the spacer structure surrounds a perimeter around all of the N image sensor regions and N lenses such that none of the spacer structure is disposed between any of the N lenses and N image sensor regions of the image sensor.