Transcript 陣列式LED之光學元件設計分析與開發(pptx檔案)

Precision Manufacturing Laboratory
陣列式LED之光學元件設計
分析與開發
Analysis on design and fabrication of optical
elements for LED array
計畫編號：NSC 99－2622－E－011 －013－CC3
陳炤彰1、詹家銘1、王瀅智2、湯峻清1 、許育豪1
Chao-Chang A. Chen, Chia-Ming Chan 1, Ying-Chih Wang 2 , Jyun-Cing Tang1 , Yu-Hao Hsu1
1國立台灣科技大學
機械工程學系
2洋鑫科技股份有限公司
中華民國一零一年十一月十三日
National Taiwan University of Science and Technology
Department of Mechanical Engineering
Content
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Precision Manufacturing Laboratory
研究背景
實驗設備與流程
實驗結果與討論
結論與建議
應用實例
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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研究背景(1/2)
Precision Manufacturing Laboratory
隨著LED照明需求日益增進，而使得在亮度、均勻度方面也日
益增加，所以在LED的要求方面也隨之改變，已從過往的單一
LED chip慢慢地轉變成由多顆LED chip所構成之陣列式分佈型
式，故在鏡片方面也漸漸的由一曲面型式，轉變成由數個曲面
所構成之陣列式LED光學元件。
http://www.glaciallight.com/
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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研究背景(2/2)
Precision Manufacturing Laboratory
• 研究目的
本研究對 Multifaceted reflector, MR照明燈具模組之二次光
學元件進行相關研究，期望在提升發光效率及照度的目標
下，達到所要求之光束角。
• 研究方法
以光學設計軟體TracePro ，配合Moldex3D 模流分析軟體
進行二次光學元件模擬與分析，並由射出成形方式模造成
形，最後進行成形與光學品質檢測探討。
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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實驗流程
Precision Manufacturing Laboratory
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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光學設計
Precision Manufacturing Laboratory
表1 光學模擬參數表
Type
Flux (lumens)
Total Rays
Material
Ref. Index
Recive distance (m)
NICHIANS6W083BT
300
27000
PMMA
1.49
2
Lens
6
National Taiwan University of Science and Technology
Department of Mechanical Engineering
成形材料
Precision Manufacturing Laboratory
• ASAHI PMMA DELPET 80N (模擬)
黏度與剪切率圖
pvT圖
• ASAHI PMMA DELPET 80NH (射出成形)
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Department of Mechanical Engineering
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射出成形設備及模具
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Thermometer
PMMA
Drying equipment
Mold
Injection molding machin
Mold temperature controller
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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量測設備
Precision Manufacturing Laboratory
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綠干涉儀(Talysurf CCI)
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配光曲線儀
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積分球
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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結果與討論
Precision Manufacturing Laboratory
經由優化後之陣列式光學元件發光角度為30o
光束角30o
配光曲線
中心照度值: 140 lux、總光通量: 224 lm
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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模流分析
Precision Manufacturing Laboratory
• Filling: melt front time
• Cooling temperature
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Department of Mechanical Engineering
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模流分析
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Precision Manufacturing Laboratory
Warpage: zx axis displacement • Warpage: ytotal
axisdisplacement
displacement
Shrinkage
0.00978
0.000155mm
mm
0.000242
0.0519 mm
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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短射實驗
Parameters
Mold Temperature
Melt Temperature
Injection Speed
Cooling time
11 ㎜
14 ㎜
Precision Manufacturing Laboratory
Stage
1st
Value
95
240
80
60
Unit
℃
℃
mm/s
s
17 ㎜
75%
20 ㎜
90%
23 ㎜
100%
30%
55%
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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微結構轉寫率量測
0~1結構
高度
(μm)
2~3結構
高度
(μm)
平均結
構高度
(μm)
模仁
59.43
58.97
59.20
成品
57.17
57.27
57.22
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平均結
構複製
率(%)
96.65
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Department of Mechanical Engineering
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光學量測
Precision Manufacturing Laboratory
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(a)840cd
暖色系燈具發光角度量測- 32°
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(b) 冷色系燈具發光角度量測- 30°
980cd
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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光學量測
Precision Manufacturing Laboratory
暖色系
冷色系
Voltage:12Vdc
Current:0.339A
Input Power:4.07W
Electrical Characteristics
Correlated Color
Temperature(CCTٕ )
3072 K
5038 K
Color Rendering Index
(CRI)
85 Ra
66.5 Ra
暖色系
冷色系
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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結論與建議
Precision Manufacturing Laboratory
• 成功利用射出成形製造出陣列式光學元件，建立陣列式二次光
學元件之光學設計方法及整合模流分析軟體進行模具設計，並
檢測成品光學性質。
• 光學模擬設計值與實際量測之光束角結果相當接近，其軟體輔
助具有相當之可靠性。
• 本研究開發之陣列式光學元件，成品厚度差異變化甚大，需要
較長冷卻時間，導致成形週期甚長，未來可對模具進行修改，
結合變模溫技術(Varithermo Mold Temperature, VMT)，以減少
成形週期、收縮及翹曲的發生。
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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應用實例
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National Taiwan University of Science and Technology
Department of Mechanical Engineering
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Acknowledgement
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• 感謝國科會NSC-99-2622-E-011-013-CC3計畫與洋
鑫科技股份有限公司提供相關技術資料及經費協
助，另有教育部顧問室數位化模具計畫使本論文
得以順利進行，特此致上感謝之意。
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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Precision Manufacturing Laboratory
Thank you!
National Taiwan University of Science and Technology
Department of Mechanical Engineering
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