Patent ID: 9443452
Filing Date: 2016-09-13
CPC Classification: G02B,G09F

Claim Text:
1. An information system for displaying information, the system comprising: a light source; an optical element comprising one body having an optical axis, an entrance surface, an exit surface, and a side surface located between the entrance surface and the exit surface, to display information by directing light received at the entrance surface from the light source through the optical element to the exit surface for the light to exit the optical element, and an absorber to absorb sunlight entering the optical element at the exit surface, wherein the system comprises a reflector to reflect sunlight entering the optical element at the exit surface to the absorber to absorb the reflected sunlight, and wherein the reflector is an internal reflector in the optical element to direct the sunlight out of the optical element through the side surface of the optical element by way of total reflection.