Über den Einfluss der Lichtstärkeverteilung von Leuchten und die Leuchtdichte : die Blendung in der Strassenbeleuchtung.

The disability glare caused by street lighting is notably reduced if the luminous intensities within the range of radiation in the vicinity of the horizontal line ( angle 75..90 gr.) are kept very low. A practical example shows how luminance, its regularity and glare vary if the luminance intensities in the upper radiation field are gradually diminished.