LED光型及平面照度之模擬分析及實驗驗證

On Simulation and Experimental Verification of LED Angular and Planar Illumination Distribution

林丕軒(Pi-Hsuan Lin)

指導教授 ： 林穀欽

崑山科技大學/工程學院/機械工程研究所/碩士(2010年)

https://doi.org/10.6828/KSU.2010.00018

摘要

LED技術近年正蓬勃發展，且廣泛應用於戶內外照明、建築物照明、醫療照明以及其他各種應用，LED於應用時往往需藉由光學模擬及驗證，因此LED各別元件之光學特性如光型及發光強度等，均為元件之重要特徵尺寸及參數，且該等參數需於照明模擬及驗證前需個別予以建立。
本文探討單一LED之光型量測以及平面照度分佈之模擬及驗證。為此，本研究於實驗室建立自動LED光型及平面照度量測系統，本系統中，使用光照度計固定於XY平台上，待測LED光源固定於角度分度盤。LED光型量測時，藉由調整角度分度盤，以測得LED之光型資訊；LED平面照明量測時，光照度計將於平台上做平面之位移，以量得照度之分佈。本研究採用SolidWorks 3D繪圖軟體及TracePro光學分析軟體，進行LED 3D建模及光學分析，另撰寫LabVIEW程式以整合上述自動量測之功能。
本文舉例LED光型及平面照度模擬及實驗驗證，模擬及實驗結果顯示其定性及定量上比較均頗為吻合，因此本研究所建立LED元件可直接用於多顆且複雜配置LED之光學模擬分析。

關鍵字

LED ； 光型 ； 平面照度

並列摘要

LED technology is under vigorous development in the recent years, and used extensively in applications for indoor/outdoor lighting, building illumination, medical lighting and other applications. Optical simulation and experimental verification is usually required in each of the above applications. Thus, the optical characteristics of individual LEDs such as the angular and spatial illumination intensity are important parameters for measure. The information must be built with the simulation software for analysis.
This study focuses on measurement the angular distribution of candela and planar distribution of lux for a single LED with experimental verification. For this, an automatic system is built in a lab to measure the distribution of intensity. In the system, a light meter is installed on a xy table while the light source for measurement is installed on a disk of angular regulator. For angular measurement, the disk is regulated to get the angular distribution of intensity of the source. For planar measurement, the light meter is moved in a planar motion to get the illumination distribution of the source. SolidWorks and TacePro are used for LED 3D modeling and illumination analysis. The automatic system contains mechatronics and optical devices, and it is integrated under the LabVIEW programming environment.
Examples of measurement of angular and planar illumination distribution of two LEDs by simulation and experiment are included in this article. The results of the simulation and experiment agree with each other qualitatively and quantitatively well. This proves the adequacy of the proposed approach for measuring the optical characteristics of LEDs. By this, a library of various LEDs can be built for simulation and design studies for multi-LEDs display in practical applications.

並列關鍵字

LED ； Angular Distribution of Candella ； Planar Distribution of Lux

參考文獻

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