An information system for displaying information, the system including a light source 2, an optical element OP having an optical axis to display information by directing light received at an entrance surface 5 from the light source through the optical element to an exit surface 6 for the light to exit the optical element, and, an absorber 10 to absorb sunlight entering the optical element at the exit surface. The system includes a reflector 12, 13 to reflect sunlight entering the optical element at the exit surface to the absorber 10 to absorb the reflected sunlight.