UV-Curable 3D Printed Fresnel-Like Scalloped Optical Structure for Oil Degradation Monitoring

Abstract

This research describes a miniaturized optical sensor built by a UV-curable 3D printer to detect motor oil degradation. With carefully controlled process parameters (e.g. curing time, slice height, and lifting height), one can make Fresnel-like scalloped profile for optical sensing. Based on Snell's law, this optical device can be used to detect the oil degradation by monitoring its refractive index and transmittance variations.