Abstract
To achieve a further extension of the depth of field in wavefront-coded imaging by reducing the impact of focus error in the optical transfer function, we propose the use of a free-form phase mask (FPM) instead of a conventional cubic phase mask (CFM). We optimized the shape of the FPM using the simulated annealing algorithm and confirmed that the optimized FFM provides a much larger focal tolerance and better final images than the CPM in the noise-free case.
Original language | English |
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Pages (from-to) | 1515-1517 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 33 |
Issue number | 13 |
DOIs | |
Publication status | Published - 2008 Jul 1 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics