博碩士論文 100226601 詳細資訊




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姓名 加西亞(Rodolfo Garcia Camacho)  查詢紙本館藏   畢業系所 光電科學與工程學系
論文名稱
(Beam-shaping design with high-uniformity illumination based on power LEDs)
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摘要(中) 本論文中,我們建立複眼透鏡系統之模型,其該系統可將發光二極體所
發射出之光線進行分配,用以得到高均勻的照明光形。首先,我們根據中場
原理對歐司朗的光源CQAR 以及CR7P 建立光源模型。接著依據我們所建立
的光源模型,設計出光整合系統並分析在不同種條件下,如何獲得一均勻的
照明光形。藉由模擬與實驗結果的比較,我們驗證所建立系統模型的準確性。
最後,我們針對尚未通過複眼透鏡時的非均勻的照明光形,進行光整合系統
的優化,用以得到最佳均勻度的光形。
摘要(英) In this thesis, we model a system that uses fly’s eye lens to redistribute light
from an LED source to obtain high uniformity illumination. First, we establish
successfully two optical models for Osram CQAR and CR7P based on mid-field
concept. By using these two light source models, we design the beam integrator
system and we analyze several parameters for the system to get a uniform pattern.
We demonstrate our model by comparing our simulations with a real optical system.
At last, we optimize the system to get the best uniformity when the light pattern
before the fly’s eye lens is not smoothing
關鍵字(中) ★ LED
★ Beam shaping
★ irradiance pattern
★ collimator
關鍵字(英) ★ LED
★ Beam shaping
★ Irradiance pattern
★ Collimator
★ Fly’s eye lens
論文目次 Contents:
Abstract . . . . . . . . . . . . . . . . . . . . . . . . . i
Contents . . . . . . . . . . . . . . . . . . . . . . . . .ii
List Figures . . . . . . . . . . . . . . . . . . . . . . iii
List of tables . . . . . . . . . . . . . . . . . . . . . vi
1. Introduction 1
1.1 History of light sources . . . . . . . . . . . . . . . 1
1.2 Light emitting diodes . . . . . . . . . . . . . . . . 7
1.3 LEDs evolution . . . . . . . . . . . . . . . . . . . .13
1.5 Overview of the thesis. . . . . . . . . . . . . . . . 15
2. Important concepts 16
2.1 Geometric optics. . . . . . . . . . . . . . . . . . . 16
2.2 Radiometry. . . . . . . . . . . . . . . . . . . . . . 19
2.3 Mid-field Concept . . . . . . . . . . . . . . . . . . 21
3. Optical Modeling for LEDs 22
3.1 Modeling Process . . . . . . . . . . . . . . . . .. . 22
3.2 LED modeling for OSRAM OSLON CQAR . . . . . . . . . . 24
3.3 LED modeling for OSRAM OSLON CR7P . . . . . . . . . . 29
4. Optical design for beam-shaping optical system 33
4.1Opt i c a l de s ign . . . . . . . . . . . . . . . . . 33
4.2 Experimental verification and analysis. . . . . .. . .38
4.3 Uniformity optimization . . . . . . . . . . . . . . . 46
5. Summary 53
References . . . . . . . . . . . . . . . . . . . . . . . .55
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指導教授 孫慶成(Dr. Ching-Cherng Sun) 審核日期 2013-7-31
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