研究生: |
游育諭 Yu-yu YOU |
---|---|
論文名稱: |
利用一次與二次光學設計解決黃圈現象之探討 The Study of Solution for Yellow-Ring Phenomenon with Primary optics and Secondary optics |
指導教授: |
胡能忠
Neng-chung Hu |
口試委員: |
陳鴻興
Hung-shing Chen 吳錦銓 Chin-chuan Wu |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
論文出版年: | 2013 |
畢業學年度: | 101 |
語文別: | 中文 |
論文頁數: | 80 |
中文關鍵詞: | 黃圈現象 、擴散粒子 、微結構擴散板 、ACCTD |
外文關鍵詞: | Yellow -Ring phenomenon, diffusing particles, microstructure diffuser plate, ACCTD |
相關次數: | 點閱:182 下載:0 |
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隨著白光LED照明在整個照明市場中的重要性大幅上升,LED固態照明的一些優點與缺點也隨之被拿來放大檢視,LED最大的優點即為本身有非常高的發光效率,是符合節能減碳的一個新興照明,然而最大的缺點亦是LED本身的特性,由於白光LED目前主流作法為藍色晶片加上黃色YAG螢光粉,因此市面上的白光LED多具有明顯的黃圈現象,而普遍的解決方法為在二次光學設計上加上一層傳統擴散板,但這卻會嚴重降低白光LED的發光效率,因此本論文提出結合一次光學與二次光學的方式,除了在白光LED螢光粉層加入TiO2擴散粒子外,並在二次光學上加上微結構擴散板,以此完美解決黃圈現象,使得最終Angular CCT deviations (ACCTD)只有140K。
With the white LED lighting in the lighting market surged in importance. Some advantages of LED solid-state lighting and disadvantages also will be used to enlarge view. The biggest advantage is the LED itself has a very high luminous efficiency, energy saving and carbon reduction is in line with an emerging lighting. But the biggest drawback is also the characteristics of the LED itself, because of the white LED current mainstream approach to blue chip plus yellow YAG phosphor, so it will make the obvious yellow-ring circle phenomenon of white LED. And universal solution is adding conventional diffuser plate by secondary optics. But it will seriously reduce white LED luminous efficiency, therefore we propose a combination of Primary optics and Secondary optics approach, in addition to add TiO2 particles in white LED phosphor layer diffusion outside, and coupled microstructure diffuser plate in the secondary optics, thus the perfect solution to a yellow circle phenomenon, making the final ACCTD only 140K.
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