3D printed lens prototypes are the latest innovation in automotive lighting system applications. One3D uses them for companies including HELLA, Varroc and MSV Elektronika rail vehicle parts. The companies use the lenses as a visual aid to confirm designs before going into large-scale production. Companies are moving away from the high lead times and production costs of PMMA and turning to 3D printing to produce new lens design prototypes for future development and innovation concept products.