Lo Yi-Chien, Cai Jhih-You, Tasi Ming-Shiou, Tasi Zheng-Yu, Sun Ching-Cherng
Opt Express. 2014 Mar 10;22 Suppl 2:A365-75. doi: 10.1364/OE.22.00A365.
A novel light luminaire is proposed and experimentally analyzed, which accurately projects light into a large rectangular area to achieve uniform illumination and a high optical utilization factor at the target. Side-illuminating luminaires for large-scale illuminated area are typically set with an elevated tilt angle to enlarge the illuminated area. However, the light pattern is bent thereby reducing the uniformity and optical utilization factor at the target. In this paper, we propose an efficient and useful approach with a rotationally symmetric projection lens that is trimmed to adjust the bending effect and to form a rectangular illumination light pattern on the ground. The design concept is demonstrated and verified. Several potential applications such as highly uniform illumination with fitting shapes for sport courts are analyzed and discussed.
本文提出了一种新型灯具，并对其进行了实验分析。该灯具能将光精确投射到一个大的矩形区域，以在目标区域实现均匀照明和高光利用率。用于大面积照明区域的侧照式灯具通常设置有较高的倾斜角度以扩大照明区域。然而，光的图案会因此发生弯曲，从而降低目标区域的均匀性和光利用率。在本文中，我们提出了一种高效且实用的方法，即使用一个旋转对称的投影透镜，对其进行修整以调整弯曲效果，并在地面上形成矩形照明光图案。该设计概念得到了论证和验证。分析并讨论了一些潜在应用，如为体育场馆提供形状适配的高度均匀照明。
