Light efficient imaging with improved resolving ability

Zeev Zalevsky, Eran Sabo, David Mendlovic, Emanuel Marom

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The optical transfer function (OTF) in imaging systems with incoherent illumination is analyzed in order to obtain an optical system, which maintains high light-collection efficiency and acceptable performance. The desired OTF is such that it provides a smaller point spread function needed to obtain an improved spatial resolution without sacrificing the energy collection efficiency of the system. The resolution improvement is associated with a contrast degradation of the output image. The contrast can however be digitally enhanced. The paper includes a theoretical description, computer feasibility studies and performance analysis.

Original languageEnglish
Pages (from-to)69-77
Number of pages9
JournalOptics Communications
Issue number1-6
StatePublished - 1 Apr 2001
Externally publishedYes


  • Coherent transfer function
  • Light efficiency
  • Optical transfer function
  • Point-spread function


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