Whang Allen Jong-Woei, Chen Yi-Yung, Yang Shu-Hua, Pan Po-Hsuan, Chou Kao-Hsu, Lee Yu-Chi, Lee Zong-Yi, Chen Chi-An, Chen Cheng-Nan
Department of Electronic Engineering, National Taiwan University of Science and Technology, #43, Section 4, Keelung Road, Taipei, 106, Taiwan.
Appl Opt. 2010 Dec 10;49(35):6789-801. doi: 10.1364/AO.49.006789.
In recent years, green energy has undergone a lot of development and has been the subject of many applications. Many research studies have focused on illumination with sunlight as a means of saving energy and creating healthy lighting. Natural light illumination systems have collecting, transmitting, and lighting elements. Today, most daylight collectors use dynamic concentrators; these include Sun tracking systems. However, this design is too expensive to be cost effective. To create a low-cost collector that can be easily installed on a large building, we have designed a static concentrator, which is prismatic and cascadable, to collect sunlight for indoor illumination. The transmission component uses a large number of optical fibers. Because optical fibers are expensive, this means that most of the cost for the system will be related to transmission. In this paper, we also use a prismatic structure to design an optical coupler for coupling n to 1. With the n-to-1 coupler, the number of optical fibers necessary can be greatly reduced. Although this new natural light illumination system can effectively guide collected sunlight and send it to the basement or to other indoor places for healthy lighting, previously there has been no way to manage the collected sunlight when lighting was not desired. To solve this problem, we have designed an optical switch and a beam splitter to control and separate the transmitted light. When replacing traditional sources, the lighting should have similar characteristics, such as intensity distribution and geometric parameters, to those of traditional artificial sources. We have designed, simulated, and optimized an illumination lightpipe with a dot pattern to redistribute the collected sunlight from the natural light illumination system such that it equals the qualities of a traditional lighting system. We also provide an active lighting module that provides lighting from the natural light illumination system or LED auxiliary sources, depending on circumstances. The system is controlled by a light detector. We used optical simulation tools to design and simulate the efficiency of the active module. Finally, we used the natural light illumination system to provide natural illumination for a traffic tunnel. This system will provide a great number of benefits for the people who use it.
近年来，绿色能源得到了很大的发展，并成为许多应用的主题。许多研究都集中在利用阳光照明作为节能和创造健康照明的一种手段。自然光照明系统有收集、传输和照明元件。如今，大多数日光收集器使用动态聚光器；这些包括太阳跟踪系统。然而，这种设计成本太高，不具有成本效益。为了制造一种可以轻松安装在大型建筑物上的低成本收集器，我们设计了一种棱柱形且可级联的静态聚光器，用于收集阳光以进行室内照明。传输部件使用大量光纤。由于光纤成本高昂，这意味着系统的大部分成本将与传输相关。在本文中，我们还使用棱柱形结构设计了一种用于将n耦合到1的光耦合器。通过n对1耦合器，可以大大减少所需光纤的数量。尽管这种新型自然光照明系统可以有效地引导收集到的阳光并将其发送到地下室或其他室内场所进行健康照明，但以前在不需要照明时没有办法管理收集到的阳光。为了解决这个问题，我们设计了一个光开关和一个分束器来控制和分离传输的光。在替换传统光源时，照明应具有与传统人工光源相似的特性，如强度分布和几何参数。我们设计、模拟并优化了一种带有点状图案的照明光管，以重新分配来自自然光照明系统的收集到的阳光，使其等同于传统照明系统的质量。我们还提供了一个主动照明模块，根据情况提供来自自然光照明系统或LED辅助光源的照明。该系统由光探测器控制。我们使用光学模拟工具来设计和模拟主动模块的效率。最后，我们使用自然光照明系统为一条交通隧道提供自然照明。该系统将为使用它的人们带来诸多益处。
