The presented work contains an empirical study for required luminous intensities for active headlamp systems. The detectability of objects with the light function glare free high beam was investigated. Two different traffic situations were simulated. The preceding traffic was presented in a distance of 200 m. The oncoming traffic was presented in a distance of 100 m and 200 m. This experiment was statically accomplished on a dark, plane and long lane. To simulate the light distribution three digital projectors were used, which had a maximum luminous intensity of 175000 cd. Two different visual targets were used, an animal preparation and a dark clothed person. As reference object served a gray card (40 cm x 40 cm) with a reflectance of 5 %. The detection objects were positioned beside the simulated traffic. The task of the test subjects was the detection of these objects while the luminous intensity was increased. The explorative data analysis is based on percentiles of object detection, which were determined in a field test. For each traffic situation the required luminous intensity for a detection probability of 50 % and 75 % are presented.
Required luminous intensities for headlamps with glare free high beam
2009
5 Seiten, 2 Bilder, 2 Tabellen, 2 Quellen
Aufsatz (Konferenz)
Englisch
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