Fresnel lens sidewall design for imaging optics T. Fujii, A. Goulet, K. Hattori, K. Konno, A. Tanaka, R. Bosmans, M. Sawada and H. Yazawa J. Eur. Opt. Soc.-Rapid Publ., 10 (2015) 15017 Published online: 28 March 2015 DOI: 10.2971/jeos.2015.15017