Extended-depth-of-field imaging with an ultra-thin folded lens
Lehan Zhang,
Shuo Wang,
Dachao Li
et al.
Abstract:Optical systems with extended depth of field (EDOF) are crucial for observation and measurement applications, where achieving compactness and a substantial depth of field (DOF) presents a considerable challenge with conventional optical elements. In this paper, we propose an innovative solution for the miniaturization of EDOF imaging systems by introducing an ultra-thin annular folded lens (AFL). To validate the practical feasibility of the theory, we design an annular four-folded lens with an effective focal … Show more
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