- Wafer-level lenses module with an extended depth of field and imaging device including the lenses module

摘要

Disclosed herein is a wafer-level extended depth of field (EDOF) lens module and an imaging apparatus having the same. The wafer-level focal depth extension lens module includes a plurality of wafer-scale lenses stacked at predetermined intervals. The plurality of wafer-scale lenses includes an effective lens whose profile is modified from an aspheric lens. The ray passing through the central region is focused on an infinite image, The profile of the effective lens is corrected so as to form an image centered on the image in the macro-macro. For example, the corrected effective lens has a first portion with no change in lens shape, a second portion with negative error, and a third portion with positive error from the optimized aspheric lens, Can be defined sequentially.