Lenses We embed optoelectronic inside 3D printed planoconvex and plano-concave lenses to better control the directionality
of illumination or optical sensing. The base of the 3D print makes up the planar side of the lens and the curved lens surface is fabricated below the component then smoothed with extra layers of material deposition. Figure 16 shows two identical LEDs embedded with 3D printed planoconvave (a) and plano-convex (b) lenses.