Wang Guangzhen, Wang Lili, Li Fuli, Kong Depeng
State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of the Chinese Academy of Sciences, Xi'an, China.
J Opt Soc Am A Opt Image Sci Vis. 2012 Sep 1;29(9):1877-84. doi: 10.1364/JOSAA.29.001877.
One kind of optical element combining Fresnel lens with microlens array is designed simply for LED lighting based on geometrical optics and nonimaging optics. This design method imposes no restriction on the source intensity pattern. The designed element has compact construction and can produce multiple shapes of illumination distribution. Taking square lighting as an example, tolerance analysis is carried out to determine tolerance limits for applying the element in the assembly process. This element can produce on-axis lighting and off-axis lighting.
基于几何光学和非成像光学原理，简单设计了一种将菲涅尔透镜与微透镜阵列相结合的光学元件，用于LED照明。这种设计方法对光源强度模式没有限制。所设计的元件结构紧凑，可产生多种形状的照明分布。以方形照明为例，进行了公差分析，以确定该元件在装配过程中的公差极限。该元件可产生同轴照明和离轴照明。
