Halo illumination is where LED modules emit light from the back of a letter to the surface behind, creating a halo glow.
Typically, halo lettering will be stood off from the wall around 30mm allowing the light behind to be seen.
When coloured illumination is required, translucent film can be applied to the acyrlic back tray.
Alternatively, there are a range of self-coloured translucent acrylics available.
A dimming unit can be incorporated to allow the intensity of the light to be changed to suit.