中文摘要：

提出了一种对大功率LED出射光实现定向控制的投射器设计方法。根据LED的出射光分布以及预定的光分布范围选用折射-全反射（TIR）光学系统。首先利用光学扩展量守恒以及同步多曲面方法求得TIR各折射面和全反射面轮廓曲线上点的坐标,然后再在UG中对坐标点进行曲线拟合得到轮廓曲线,进而得到TIR模型及适合数控加工的面形数据。结果表明：用该种方法设计的投射系统结构紧凑、光能传输效率高;能有效地实现对LED出射光的收集和定向控制;有助于LED的应用和照明系统的后续设计。

英文摘要：

A method of designing directional illumination for high power LED is proposed.An optical system with Total Internal Reflection（TIR） is chosen,according to light distribution of the source and the desired light distribution of emergent rays.Points on profile curves of those refracting and internal reflecting surfaces are obtained with the extended conservation law and the simultaneous multiple surface method.Profile curves are obtained by curve fitting with these points in UG,and then model of the projector ...