Catadioptric lenses in Visible Light Communications

23rd Congress of the International Commission for Optics

Garcia-Marquez, J.^1,3 ; Valencia, J.C.^2 ; Perez, H.^3 ; Topsu, S.^3

Laboratoire Commun de Métrologie LNE/CNAM, 1 rue Gaston Boissier, Paris

75724, France^1

Centro de Investigaciones en Optica, Loma del Bosque 115, Leóne

37150, Mexico^2

OLEDCOMM-Lize, 10-12 Avenue de I'Europe, Vélizy

78140, France^3

关键词: Acceptance angle;    Anterior surface;    Bit error ratio (BER);    Catadioptric lens;    Cylindrical coordinates;    Electronic levels;    Preliminary design;    Visible light communications (VLC);   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/605/1/012029/pdf
DOI  :  10.1088/1742-6596/605/1/012029

来源: IOP

【 摘 要 】

Since few years ago, visible light communications (VLC) have experience an accelerated interest from a research point of view. The beginning of this decade has seen many improvements in VLC at an electronic level. High rates of transmission at low bit error ratios (BER) have been reported. A few numbers of start-ups have initiated activities to offer a variety of applications ranging from indoor geo-localization to internet, but in spite of these advancements, some other problems arise. Long-range transmissions mean a high BER which reduce the number of applications. In this sense, new redesigned optical collectors or in some cases, optical reflectors must be considered to ensure a low BER at higher distance transmissions. Here we also expose a preliminary design of a catadioptric and monolithical lens for a LI-FI receiver with two rotationally symmetrical main piecewise surfaces zaand zb. These surfaces are represented in a system of cylindrical coordinates with an anterior surface zawith a central and refractive sector surrounded by a peripheral reflective sector and a back piecewise surface zbwith a central refractive sector and a reflective sector, both characterized as ideal for capturing light within large acceptance angles.