Techniques Utilizing Diffractive Masks Having Structures with a Period Limited Randomness

  • Alex Zlotnik
  • Zeev Zalevsky
  • David Mendlovic
  • Jonathan Solomon
  • Bahram Javidi
Part of the SpringerBriefs in Physics book series (SpringerBriefs in Physics)


In many high resolving optical systems, resolution is limited not by the optics but by the sensor’s nonzero pixel size. As a result, overall resolution is decreased. Here, a novel approach for enhancing resolution beyond the limit set by the sensor’s pixels is proposed. This method does not involve additional mechanical elements, such as those used for microscan. In this scheme, neither the sensor nor additional elements are moved. The geometrical super resolving procedure is based on code division multiplexing access (CDMA) approach with all of its inherent benefits, such as relative noise immunity to single tone interference. A setup is proposed for coherent and incoherent illumination, with slight modifications for the latter. A theoretical analysis of the setup is presented and later compared with empirical results.


Input Image Image Retrieval Optical Setup Original Input Super Resolution 
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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Alex Zlotnik
    • 1
  • Zeev Zalevsky
    • 1
  • David Mendlovic
    • 2
  • Jonathan Solomon
    • 2
  • Bahram Javidi
    • 3
  1. 1.School of EngineeringBar-Ilan UniversityRamat-GanIsrael
  2. 2.Department of Electrical Engineering – Physical Electronics, Faculty of EngineeringTel-Aviv UniversityRamat AvivIsrael
  3. 3.Department of Electrical and Computer EngineeringUniversity of ConnecticutStorrsUSA

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