Dial integrated rotation speed measurement instrument for car, has carrying disk including light guide plate in which chromatographically colored ring element is arranged, where light guide plate includes light-scattering nanoparticles

摘要

The instrument (1) has a dial (10) including a display area (13) on a carrying disk (11), where a transparent chromatographically colored ring element (14) surrounds the display area. The carrying disk includes a transparent light guide plate in which the chromatographically colored ring element is arranged, where the light guide plate includes light-scattering nanoparticles (15) in its volume. The carrying disk includes an annular groove (16) surrounding the display area, where the chromatographically colored ring element is embedded in the groove. An independent claim is also included for a method for manufacturing a dial integrated instrument for a car.