题名: |
High-Beam and Low-Beam Headlighting Patterns in the U.S. and Europe at the Turn of the Millennium |
作者: |
Schoettle, B.; Sivak, M.; Flannagan, M. J. |
关键词: |
Vehicle lighting devices; Head lamps; Europe; United States; Passenger vehicles; Motor vehicles; Photometry; Low beams; High beams |
摘要: |
This study was designed to provide photometric information about current U.S. and European high- and low-beam headlamps. The sample included 20 headlamps manufactured for use on the 20 best-selling passenger vehicles for model year 2000 in the U.S., and 20 headlamps manufactured for use on the 20 best-selling passenger vehicles for model year 2000 in Europe. The vehicles samples represent 49% and 47% respectively of all vehicles sold in the U.S. and in Europe. The lamps were purchased directly from vehicle dealerships. The photometric information for each lamp was weighted by the sales figures for the corresponding vehicle. The results are presented both in tabular form for the 25th-percentile, the median (50th-percentile), and the 75th-percentile luminous intensities, as well as in graphical form (for the median luminous intensities), both for high- and low-beam headlamps. |
总页数: |
38p |
报告类型: |
科技报告 |