Fresnel lenses have been found by some optical systems designers to be useful in combination with a main lens to provide quality telecentric images. Aspheric Fresnel lenses are an ideal choice for this application because they achieve a high degree of telecentricity across the entire field of view and introduce very little distortion. In a telecentric system consisting of an aspheric Fresnel lens and an off the shelf non-telecentric main lens, the design parameters are few. Aberration theory, constraints on the visibility of the grooves, and physical constraints can effectively be used to quickly determine if a solution exists for a given application and identify the solution space if it does.

Date Published: 27 September 2016
PDF: 11 pages
Proc. SPIE 9949, Polymer Optics and Molded Glass Optics: Design, Fabrication, and Materials 2016, 99490H (27 September 2016); doi: 10.1117/12.2240137

Published in SPIE Proceedings Vol. 9949:
Polymer Optics and Molded Glass Optics: Design, Fabrication, and Materials 2016
David H. Krevor; William S. Beich; Michael P. Schaub; Alan Symmons, Editor(s)