新型矿灯二次配光系统的仿真研究

将光纤照明技术运用到矿灯领域中,需要根据光纤照明的特点设计相应的二次配光系统,以满足实际配光的需求。利用光学仿真软件TracePro开展了对新型光纤LED矿灯系统的二次配光问题的仿真研究。配光器件主要采用单个反光腔、透镜及其组合。从反光腔形状、深度和口径、透镜类型和尺寸等方面入手,探讨了各个因素对配光效率、光斑大小、光照均匀度的影响。通过对仿真结果的比较和分析发现,反光腔主要影响配光效率,而透镜主要影响光照均匀度和光斑大小。得到了合适的新型光纤-矿灯的二次配光系统,即锥形腔配合菲涅尔透镜。结果表明,该组合具有配光效率高、光照度均匀、光斑大小适中、实际尺寸小、方便井下作业等优点。     

Development trends in silicon photonics

Silicon photonics has become one of the major technologies in this very information age. It has been intensively pursued by researchers and entrepreneurs all over the world in recent years. Achieving the large scale silicon photonic integration, particularly monolithic integration, is the final goal so that high density data communication will become much cheaper, more reliable, and less energy consuming. Comparing with the developed countries, China may need to invest more to develop top down nanoscale integration capability (more on processing technology) to sustain the development in silicon photonics and to elevate its own industry structure.