Engineered phase window for extended depth of focus

摘要

Wavefront coding is successful at decreasing the focus dependence of an optical system. These systems require image processing and additional optical surfaces. We develop a phase surface placed near the image plane to engineer the point spread function into a similar shape. The resulting system contains a beam shaping optic that utilizes the already-present detector window and provides more flexibility to enhance resolution in systems that are inherently aberrated.