Edge lighting system for interactive display surface

摘要

An edge lighting system has a plurality of light sources, such as light emitting diodes (LEDs) mounted at spaced-apart intervals along a rail that is disposed adjacent to an edge of a display surface. Orifices formed in the rail in which the light sources are inserted are sized to enable each light source to move freely into contact with the edge of the display surface when urged by a force provided by a compressed elastomeric member to provide a uniform illumination as the light is internally reflected in the material comprising the display surface. The light sources extend beyond a concave (parabolic) surface on the rail that reflects light from the light sources into the edge. Any object approaching the display surface is illuminated by the light being conveyed within the material.