Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Uniformity of Concentration Factor and Back Focal Length in Molded Polymer Microlens Arrays

Not Accessible

Your library or personal account may give you access

Abstract

An array of polymer microlenses, made of 32×32 individual elements spaced by a 50-µm pitch, is used in connection to an array of 32×32 6-µm diameter SPADs (Single Photon Avalanche Detector), with the aim of mitigating the loss in sensitivity due to the area fill-factor. The lens array is fabricated by polymer casting in a photoresist replica mold. Results about repeatability of concentration factor and back focal length are reported. At C= 35 and a focal length F=40 µm, the spread of concentration is < 6%, and that of BFL is <0.5 µm.

© 2010 Optical Society of America

PDF Article
More Like This
Uniformity of Concentration Factor and BFL in Microlens Array for Image Detectors Applications

Giuseppe Martini, Enrico Randone, Mohammad Fathi, and Silvano Donati
FWG5 Frontiers in Optics (FiO) 2009

Focal plane pixel energy redistribution and concentration using microlens arrays

William H. Southwell
WA.4 Optical Design for Photonics (ODP) 1993

One step non-contact fabrication of polymer microlens arrays by thermocapillary lithography

Euan McLeod and Sandra M. Troian
CML3 CLEO: Science and Innovations (CLEO:S&I) 2011

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved