The visibility of moving objects is dependent upon the angular size, speed and luminance of its background and the luminance of the surroundings. A high standard of lighting is required as the small, black and fast-moving puck has to be made to contrast against the ice rink so that the spectators and players can see it. This is especially true when there is a large distance between the ice and the spectators, such as in arenas or halls. As ice acts as a good diffuse reflector there should be no strong patterns of light that could distract from the game. Good lighting uniformity is important for seeing the puck.
