Sub-wavelength and non-periodic holes array based fully lensless imager

Aviram Gur, Ran Aharoni, Zeev Zalevsky, Vladimir G. Kutchoukov, Vicente Mico, Javier Garcia, Yuval Garini

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We present a novel concept for microscopic imaging. The proposed microscope-like device does not include an objective lens neither a condenser. Instead, a metallic plate of sub-wavelength hole-array with a varying pitch is used to illuminate the inspected object that is mounted very close to it. As a result, the transmitted spectrum through each hole differs from the others and therefore, each spot of the detected object is illuminated with a unique spectrum. By measuring a single spectrum that is the sum of all the spectra that are transmitted through the sample and by using spectral decomposition algorithms, the spatial transmission pattern of the object can be extracted.

Original languageEnglish
Pages (from-to)3509-3517
Number of pages9
JournalOptics Communications
Volume284
Issue number14
DOIs
StatePublished - 1 Jul 2011

Keywords

  • Fourier transform optics
  • Image processing and restoration
  • Nano-plasmonics

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