Simple telecentric submillimeter lens with near-diffraction-limited performance across an 80 degree field of view

Mohsen Rezaei, Iman Hasani Nia, Alireza Bonakdar, Hooman Mohseni*

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

A simple and compact telecentric lens based on two hemispheric optical elements arranged in a formation resembling an "hourglass" is proposed and evaluated. Our modeling and experimental results show the ability of this lens in achieving high resolution over a large field of view. A prototype with 500 μm total thickness is built using silicon micromachining methods for a center wavelength of 1500 nm. Experimental measurement shows near-diffraction-limited performance and good telecentricity over an 80° field of view at a numerical aperture of 0.2. All elements of the hourglass lens are in direct contact, and hence the alignment is extremely simple. We believe the proposed lens is a good candidate for compact and low-cost multi-aperture imagers.

Original languageEnglish (US)
Pages (from-to)8752-8756
Number of pages5
JournalApplied optics
Volume55
Issue number31
DOIs
StatePublished - Nov 1 2016

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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