Realizing Large Area Diffractive Lens using Multiple Sub-Aperture Diffractive Lenses and Computational Reconstruction

Shivasubramanian Gopinath, Agnes Pristy Ignatius Xavier, Praveen Periyasamy Angamuthu, Tauno Kahro, Oskar Tamm, Andrei Bleahu, Francis Gracy Arockiaraj, Daniel Smith, Soon Hock Ng, Saulius Juodkazis, Kaupo Kukli, Aile Tamm, Vijayakumar Anand

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Manufacturing large area diffractive lenses (DLs) is a challenging task, as in many cases, the outermost zone width surpasses the photolithography limit and even the wavelength limit. In this study, a computational imaging method is proposed which allows realizing a single large area strong DL with multiple sub-aperture weak DLs. The sub-aperture DLs collect light and focus it into multiple points within the area of the image sensor instead of a single point which increases the width of the zones of the DL. A computational reconstruction method was applied to reconstruct a high-resolution image from the multiple low-resolution images.

Original languageEnglish
Title of host publicationHolography
Subtitle of host publicationAdvances and Modern Trends VIII
EditorsAntonio Fimia, Miroslav Hrabovsky
PublisherSPIE
ISBN (Electronic)9781510662681
DOIs
StatePublished - 1 Jan 2023
EventHolography: Advances and Modern Trends VIII 2023 - Prague, Czech Republic
Duration: 24 Apr 202325 Apr 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12574
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceHolography: Advances and Modern Trends VIII 2023
Country/TerritoryCzech Republic
CityPrague
Period24/04/2325/04/23

Keywords

  • Computational imaging
  • diffractive lens
  • Golay telescope
  • holography
  • Lucy-Richardson-Rosen algorithm
  • sub-aperture

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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