LED導光圈之分光結構設計並分析其對光分佈均勻度之影響

Design of Light Splitting Structures in LED Light Guide Systems and Analyzing the Influences on the Uniformity of Light Distribution

陳偉銘(Wei-Ming Chen)

指導教授 ： 莊為群

國立虎尾科技大學/電機資訊學院/光電與材料科技研究所/碩士(2014年)

https://doi.org/10.6827/NFU.2014.00096

摘要

本研究主要探討LED的光源在發光之後，進入導光圈內，於V型(翼型)分光結構部分的損耗與其對導光效果的影響。研究的進行首先係利用幾何光學的方式，將光線發光之後進入光圈內部的物理現象，寫成數學式來進行分析，並利用MATLAB將之寫成程式來進行計算，計算完畢後使用 UG(Unigraphics)繪圖軟體將MATLAB中所求出的角度繪製成直線，並將直線的交點利用雲線方式將之連成一條平順的曲線，接著再用這條曲線來建立V型分光結構， 匯至LucidShape光學模擬軟體中來進行模擬實驗。
接著利用Lucid Shape光學模擬軟體先進行原廠設計的損耗模擬與其傳導率，藉由模擬光圈V型分光結構上、與光圈斷面三處sensor的光通量來判定光通過的多寡，來判定光損耗率、與經過V型分光結構後的傳導率，接著將我們所設計的多組不同V型分光結構參數放進LucidShape內進行模擬找出其傳導率最好的一個，再用此設計與原廠設計件做比較，最後再將原設計分光面與設計過的V型分光結構分別放在條件相同的光圈上，比較其均勻度，最後將實際成品以NC加工製作模型以成品實際比對其功效，最終實際成品與模擬結果相同 ，其均勻度較原廠件為佳，並改善了原廠前端過亮問題。

關鍵字

導光 ； 光圈 ； UG ； MATLAB ； LucidShape ； 全反射

並列摘要

This study focused on the LED light source after light, into the guide aperture , in V -type ( wing ) spectral losses and their impact on the structural part of the light guide effect . First, the Department conducted the study using the geometric optics approach, after the light -emitting aperture into the interior of the physical phenomena , written mathematical formulas to analyze and use matlab to write a program to calculate the use of UG (Unigraphics) drawing After the calculation software matlab obtained will be drawn in the perspective of a straight line , and the line to the intersection of the use of cloud -line connected into a smooth curve , and then using it to create a V-shaped curve spectral structure , and different angles of the V- spectral structure, exported to LucidShape optical simulation software to simulate experiments.
Then use Lucid Shape optical simulation software first performed the original design and its conductivity loss simulation , simulation by the V-shaped aperture spectral structure , and the aperture section three flux sensor to determine the amount of light to pass through , to determine its V- optical spectral structure at the attrition rate , and after a v -type conductivity spectral structure , then we have designed multiple sets of V-shaped structure into the LucidShape spectral simulation to find out the best one conductivity , then this design and original design pieces for comparison, and finally the original design of smooth and designed V-shaped spectral structures were placed on the same conditions aperture , comparing its uniformity , and finally the actual NC finished with the actual manufacture of finished model than its effectiveness , and ultimately the same as the actual finished with the simulation results , the uniformity is better than the original pieces , there is no genuine issue front too bright .

並列關鍵字

Light Guide ； MATLAB ； LucidShape ； Total Reflection

參考文獻

[5]羅梃方，2010，”薄型化導光板設計之研究-楔型導光板斜面之發光效率-”國立交通大學工學院精密與自動化工程學程碩士論文

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[18] J.E. Harvey,1976,“Light-Scattering Properties of Optical Surfaces”, Ph.D. Dissertation, U.Arizona.

[1] www.elecfans.com

[2] auto.tw.msn.com