| Autor: |
van der Gracht, Joseph, Dowski, Edward R., Taylor, Merwyn G., Deaver, Dawne M. |
| Zdroj: |
Optics Letters; July 1996, Vol. 21 Issue: 13 p919-921, 3p |
| Abstrakt: |
We present experimental evidence that demonstrates a greatly increased depth of field in a broadband-illuminated imaging system through the use of a special-purpose phase mask and digital filtering. The phase mask is of a simple rectangularly separable cubic-phase design, whereas the digital filtering used was a simple object-independent least-squares inverse filter. We demonstrate successful operation of the system over a range corresponding to 30 times the Hopkins criterion for allowable misfocus. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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