在灯具设计中, 特别是开发投光灯、轨道灯等类型灯具时, 经常会遇到系列化设计问题。在不修改基本外形结构的情况下, 要想获得不同发光角度、照度均匀, 提出了一种通过鳞甲片改变出光角度的反射罩设计方案, 包括鳞片参数的计算、基面合理分隔方法、实际仿真模拟。最终给出同样基面, 发散角(FWHM)为20°、40°、60°, 光能利用率均达到75%, 匀光效果85%左右的设计结果, 证明该设计方法可行性。

The serial design of lamps to get different light-emitting angle and good illuminance uniformity without modifying the basic structure is a regular problem, especially in the design of spot lights and track lights. In order to address the issue, a design of reflector with scute to change the light-emitting angle is proposed, including a calculation method of scute parameter, a reasonable approach to divide the cardinal plane and the real simulation. In the end, a series of mail reflectors with 20°、40°、60°light-emitting angle, 75% energy efficiency and about 85% illuminance uniformity is shown to prove the feasibility of the design method.