Micro-lens array with micro-lens subsets displaced from a regular lattice pattern

摘要

A micro-lens array for an imaging device has micro-lenses located on the micro-lens array relatively to a regular lattice. The micro-lens array has micro-lens subsets, each sub-set having a two dimensional array of micro lenses, wherein micro-lenses of each sub-set are displaced relative to the regular lattice according to a common pattern, the common pattern defining different displacements for each micro-lens of the sub-sets. Each micro-lens of the subset may have a focal distance f. Micro-lenses of each sub-set may be displaced relative to the regular lattice according to a displacement pattern, which defines the displacement of each micro-lens as integer multiples (k, l) of unit vectors, said unit vectors having a magnitude which is a function of f /N.