发光学报, 2018, 39 (3): 403, 网络出版: 2018-04-09   

适用于植物照明的高均匀度LED面光源设计

High Uniformity LED Panel-light for Plant Lighting
作者单位
1 华南理工大学 材料科学与工程学院, 广东 广州 510640
2 华南理工大学 发光材料与器件国家重点实验室, 广东 广州 510640
摘要
针对目前植物照明灯具混光混色均匀度差、难以满足植物工厂高效生产作物产品的问题提出了一种高均匀度的植物面光源的设计方案。利用一种棱锥状的光学元件将LED发出的光线划分为透射、反射和直射3部分,增加了光线的耦合程度,进而提高了出光面上的混光和混色均匀度。进一步采用照度均匀度代替光量子通量密度的均匀度并且联同混色均匀度作为考察指标,利用Taguchi方法设计并进行实验,研究不同因子对光源均匀度的影响,得出实验结果后进行优化,最终获得了一个照度均匀度为92.13%、混色均匀度为89.72%的植物照明面光源。
Abstract
Traditional plant lamps optical structure is easy with poor color uniformity and illumination uniformity. It is not good for plant growing. For this reason, a LED panel light with high color-mixed uniformity and illumination uniformity was designed. The design used a pyramidal optical element to divide the light emitted by the LED into transmission part, reflection part and direct part. This method can increase the light coupling, and improve the uniformity of the mixed light and color on light emitting surface. Furthermore, the illumination uniformity was used to instead of the photosynthetic photon flux density (PPFD) uniformity and conjuncted it with color-mixed uniformity as the examining index. Then, the Taguchi method was used to design and experiment, studying the influence of different factors on light uniformity. Finally, the results were obtained and optimized after the experimental. A plant light source with 92.13% illumination uniformity and 89.72% color-mixed uniformity was gotten.
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张帅, 文尚胜, 马丙戌, 庞培元, 陈浩伟, 蔡明兴, 符民, 侯一曼, 左欣. 适用于植物照明的高均匀度LED面光源设计[J]. 发光学报, 2018, 39(3): 403. ZHANG Shuai, WEN Shang-sheng, MA Bing-xu, PANG Pei-yuan, CHEN Hao-wei, CAI Ming-xing, FU Min, HOU Yi-man, ZUO Xin. High Uniformity LED Panel-light for Plant Lighting[J]. Chinese Journal of Luminescence, 2018, 39(3): 403.

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