A rescue braking system provides a smoother elevator car movement by mechanically lifting or applying the brake. The at least one optical component can be pivoted into the beam path and back out of the beam path about a pivot axis extending substantially parallel to a longitudinal axis of the housing, the at least one optical component being arranged on a support which is pivotable about the pivot axis. The transparent light emitting layer is configured to display image in the first mode and be disabled in the second mode.