Optical sensor used for e.g. monitoring, optical sensing, distance measurement or in optical barrier, comprises joined pair of Fresnel lenses formed by plastic injection molding

摘要

The plastic injection molding (9) is used in an optical system. It has first and second segments designed as Fresnel lenses (9a, 9b) which form the transmitted beam (3) and/or the received beam (5). The lenses are connected by a continuous bridging section, part of the injection molding. An additional light path provides visible optical signals from a light-emitting diode.