Viewing angle is the term used for a display technology to refer to the angle at which brightness or contrast drops below 50% of the maximum. For all display technologies the best viewing angle is face on.

INDOORS:For indoor LED's we normally quote a viewing angle of 160 degrees - to all intents and purposes you can read them from any angle you can read the text from.

OUTDOORS:Outdoor, standard LED's are 30 degree ltrabright. The light is focused into a targeted zone to increase the brightness to a level that allows good legibility & contrast.
In bright daylight the display viewing angle is therefore 30 degrees. But as ambient light levels decrease the viewing angle increases until at night-time it matches that of indoor LED's.

Our larger text displays use Hyperdot LED's with a 70 degree viewing angle. This is vastly superior at only a modest cost increase and allows over 3 times greater viewing audience, or in a parallel drive-by situation 3 x more time for reading.