Optical Device, Assembly, Vehicle and Method

An optical device including at least two optical systems comprising a respective light source that is individually controllable. Furthermore, a respective optical system includes a light guide into which the light of the respective light source can be input. Additionally, a respective optical system has a light output side, and the second optical system additionally has a light input side into which light exiting from the light output side of the first optical system irradiates. Moreover, an image mask is arranged between the optical systems, the image mask being provided in the optical path between the light output side of the first optical system and the light input side of the second optical system.