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首页> 外文会议>Fourth International Conference on Solid State Lighting >Performance of phosphor coated LED optics in ray trace simulations
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Performance of phosphor coated LED optics in ray trace simulations

机译：磷光涂层的LED光学器件在光线轨迹模拟中的性能

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In commercial high brightness phosphor coated (PC) LED packages the phosphor is put down on the die in the center of the hemispherical encapsulation, representing a quasi-point source that provides convenient optical control in lighting fixture design. However, specific applications may benefit from other package geometries and beam shapes regarding efficiency, color uniformity and thermal management. In order to examine optical arrangements the solid model of an InGaN LED die and the optical system including the phosphor were simulated using Monte-Carlo forward ray tracing technique. Photoluminescence was implemented as two separate processes: short wavelength LED emission and phosphor absorbtion was traced first, followed by re-emission of the down-converted radiation by the phosphor layer, optical properties of existing phosphors were used. Output parameters of the two ray traces were combined and evaluated for the geometries examined.
机译：在商用高亮度荧光粉涂层（PC）LED封装中，荧光粉被放置在半球形封装中心的管芯上，代表准点光源，可在灯具设计中提供方便的光学控制。但是，在效率，颜色均匀性和热管理方面，其他封装的几何形状和光束形状可能会受益于特定的应用。为了检查光学布置，使用蒙特卡洛前向射线追踪技术模拟了InGaN LED芯片的实体模型和包括磷光体的光学系统。将光致发光实现为两个独立的过程：首先跟踪短波长LED的发射和磷光体的吸收，然后再通过磷光体层重新发射下转换后的辐射，并使用现有磷光体的光学特性。合并两条射线轨迹的输出参数，并评估所检查的几何形状。

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