应用于助航系统的赋形曲面光学系统研究

非对称式光度系统技术可以实现光能量的收集与再分配,已经广泛应用于照明领域。基于非成像光学理论的自由曲面照明光学设计具有体积小、设计自由度高、出光光形准确可控等优点。通过采用自由曲面对LED进行合理的二次配光,可以实现绿色环保的照明,给未来照明行业的发展指明了新的方向。本文通过对关于LED自由曲面的光学设计进行研究,提出了一种满足侧边发光照明方式的自由曲面透镜设计方法。将得到的自由曲面透镜实体模型作为立式滑行道边灯透镜设计的基本结构。仿真与实验结果表明,仅用一颗LED光源即可实现联邦航空局(FAA)对立式滑行道边灯的光强分布要求。

Research on Optical System of Shaped Surface Applied to Navigation Aid System

Asymmetric photometric system technology can realize the collection and redistribution of light energy, which has been widely used in the field of illumination. Free-form surface illumination optical design based on non-imaging optical theory has the advantages of small size, high design freedom, accurate and controllable light pattern. By using a free-form surface to properly change the light distribution of the LED, green lighting can be realized, which indicates a new direction for the development of the future lighting industry. In this paper, through the research on LED free-form optics design, a design method of free-form surface lens that satisfies the side-light illumination mode is proposed. The obtained free-form lens solid model is taken as the basic structure of the elevated taxiway edge light lens design. Simulation and experimental results show that the light intensity distribution requirements of the Federal Aviation Administration (FAA) for the elevated taxiway edge light can be achieved with only one LED light source.