Design of reflector using zoned method based on non-imaging optics
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摘要: 应用非成像光学的原理，介绍一种简单、实用的旋转对称反射器的自由曲面设计方法环带法。提出环带法的设计思路，将光源的出光分布和灯具光学组件的出光分布分别按一定的角度间隔平均划分为不同的环带区间，根据不同环带区的光通量值差异进行一系列的对比分析，从而确定光源出射光线与灯具出射光源的对应关系，最终确定反射面的斜率，求解由斜率构成的二元一次方程组便可得到反射曲线的线形。描述了环带法的详细设计步骤和细节，并通过针对LED光源的具体应用实例加以验证，最终实现对光源的精确配光，设计吻合程度可达98.4%。Abstract: A brief and fundamental method for design of rotational symmetric reflector, called zoned method, was introduced based on non-imaging optics. The design idea of zoned method was presented: the light distribution of light source and luminaire were divided into pieces of zone bands by equal angle interval, the comparative analysis of flux difference of these two series of zone was did, and the relation between rays from light source and that from luminaire was determined, then the slope of the reflective curve at each reflective points was confirmed, finally the total shape of reflective curve was shown in 3D software. Moreover, detail design steps were described, and the precise design of reflector was verified with a high design matching ratio of 98.4%, by taking a special application for LED source for example.
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Keywords:
- non-imaging optics /
- reflector design /
- zoned method /
- free form surface /
- LED lightdistribution
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