均匀照明反射面设计中的系数计算

很多照明场合都需要均匀照明,为了达到均匀照明的要求,在光源附近增加一个反射面,使反射光与直接照射光叠加在一起达到均匀照明的效果。根据光源的发光特性,建立起关于反射面空间坐标的微分方程,并求解了反射面的曲面方程。给出了部分系数的表达式。利用这些系数,针对LED光源设计了反射面,光线追迹表明,该结果是正确的,方法是可行的。本文解决了均匀照明中反射面设计的系数计算问题,文中的结果可用于各种灯具设计。

Coefficient Calculation of Reflective Surface Design for Uniform Lighting

Uniform illumination is required for some occasions. In order to reach uniform illumination, a new method is proposed, a free-form reflector is designed near the light source, and it makes the direct light and reflected light superpose each other to reach the uniform illumination requirement. According to the luminous characters of light source, the equations about the spatial coordinates of reflecting surface are established, and reflective surface equations are solved. Some coefficient expressions are given, the reflective surface of LED is designed by using these coefficients, and the result of the ray tracing shows the coefficients is correct, it means the method is feasible. This paper has worked out the coefficients of reflector designing in uniform illumination, and the result can be applied to all kinds of luminaires design.