has the fewest white dots per unit area since the surface 40 has the fewest white dots per unit area and each succeeding surface 42 through surface 50 having respectively more white dots per unit area the surface 40 will have the lowest reflectivity while each succeeding surface 42 through surface 50 will have a respectively higher reflectivity while the preferred embodiment varies the quantity of white dots per unit area in order to vary reflectivity a fixed quantity and spacing of dots per unit area could be established and the shape and size of the dots varied both methods will work equally well the percentage of white dots per unit area for each of the reflective surfaces 40 50 is selected so that the resulting reflectivity of each surface is inversely proportional to the square of the light path distance from the surface to the light source 30 and so that light from the light source 30 will reflect from each of the surfaces 40 50 with substantially equal intensity in operation light from the lamp 30 enters the extremity 22 of the light pipe 20 and spreads throughout the entire interior of the light pipe as the light moves away from the extremity 22 toward the other end of the light pipe 20 its intensity diminishes the reflective surfaces 40 through 50 reflect this light.