New method of road lighting design based on revealing power
Applying a method to derive the luminance difference threshold for non-uniform background, the distributions of Total Revealing Power, as a sum of the Negative Revealing Power for the object darker than the background and the Positive Revealing Powers for the objects higher than the background are derived at many points over the non-uniform luminance road surface area under different road lighting installations. From the distribution of the Total Revealing Power, an Area Ratio of Revealing Power of each lighting installation is calculated. The Area Ratio is defined as extend of the portion or portions of the road surface area over which the Total Revealing Power is higher than a specified value. By comparing relationships between the average road surface luminance and the Total Area Ratio, it will be shown that the geometric arrangements of the luminaires influence noticeably on Total Area Ratio, or general level of the visibility under road lighting. A part of the results will be shown.
road lighting visibility revealing power area ratio
Yoshinori Karasawa Kohei Narisada
Matsushita Electric Works Chukyo University
国际会议
26th Session of the CIE(国际照明委员会（CIE）第26届大会)
北京
英文
702-705
2007-07-04（万方平台首次上网日期，不代表论文的发表时间）