Research in Computing Science, Vol. 131, pp. 119-124, 2017.
Abstract: Imaging Fresnel has been extensively studied to focus light in an effective and low-cost way, however, these lenses show low tolerances in alignment when they are coupled with plastic optical fibers (POFs). The principal factor is the high focal point movements produced by slight changes in the incidence angle of the source rays. In order to study these movements and its effects over the coupling between Fresnel lens and POFs, a mathematical analysis using Geometrical Optics and simulations in Zemax OpticStudio® were performed. The results show that the asymmetry of the numeric aperture of the Fresnel lens has higher sensitivity to low incidence angles and the coupling of the focused light to POFs with different fiber lenses at the input have a better performance using a plane face end. The results confirm the low tolerance, <1º, to source angular misalignments and suggest the use of a secondary optical element.
PDF: Radiant Flux Analysis of a System based in Imaging Fresnel Lens and Plastic Optical Fiber with Fiber Lenses
PDF: Radiant Flux Analysis of a System based in Imaging Fresnel Lens and Plastic Optical Fiber with Fiber Lenses