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姓名 謝敏生(Min-sheng Hsieh) 查詢紙本館藏 畢業系所 光電科學研究所碩士在職專班 論文名稱 高效率藍光碟片讀取頭
(Highly Efficient Optical Pickup Head for Blu-ray Disc)相關論文 檔案 [Endnote RIS 格式]
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摘要(中) 傳統的讀取頭效率不高，主因為雷射光源的垂直發散角與水平發散角不同，垂直方向的發散角比水平方向大的多，為了擷取圓形的雷射光束來利用，準直鏡以水平方向光線強度 的發散角來設計，因此在垂直方向有許多的雷射能量平白地浪費掉。有鑑於此，本論文分別利用水平方向共焦的柱面鏡組，與水平方向傾斜的菱鏡組來進行水平方向擴束，將水平方向光線強度 的雷射光束放大到與垂直方向光線強度 的雷射光束相同，再利用垂直方向的發散角來設計高效率的準直鏡。
本論文首先設計傳統型的藍光碟片讀取頭，涵蓋讀取頭的物鏡設計、準直鏡設計、讀取頭系統的公差分析與聚焦誤差訊號擷取，再模擬雷射光在讀取頭系統中的實際效率。為了提昇效率，導入水平擴束的概念，分別推導設計水平柱面擴束系統與菱鏡擴束系統，同樣涵蓋高效率藍光碟片讀取頭的準直鏡設計、系統公差分析、聚焦誤差訊號擷取與模擬實際效率。最後比較本論文所提出之設計的各項優缺點。摘要(英) The low efficiency of traditional pickup head is limited by the difference of vertical divergent angle and horizontal divergent angle. The vertical divergent angle is much larger than the horizontal one. To get the circular laser beam, the collimating lens is designed with the divergent angle which intensity is in the horizontal direction. Therefore there is a lot of energy wasted. This thesis uses the cylindrical afocal system and the prismatic system to expand the beam separately in the horizontal direction. The expander makes the beam size which intensity is in the horizontal direction as large as the beam size which intensity is in the vertical direction. Then the highly efficient collimating lens is designed with the divergent angle in the vertical direction.
First, this thesis designs traditional Blu-ray Disc pickup head. It covers the design of its objective lens, the design of its collimating lens, tolerance analysis and the focusing error signal, and then simulates the total efficiency. This thesis introduces the concept of beam expanded in the horizontal direction to improve the total efficiency. This thesis designs the cylindrical expander and prismatic expander. It also covers the design of the collimating lens, tolerance analysis and the focusing error signal, and then simulates the total efficiency. At last summarize all of the new designs which are proposed by the thesis.關鍵字(中) ★ 藍光碟片
★ 讀取頭關鍵字(英) ★ optical pickup head
★ Blu-ray Disc論文目次 論文摘要................................................................................і
Abstract.................................................................................................................ii
致 謝 辭..............................................................................................................iii
目 錄..............................................................................................................iv
圖 目 錄..............................................................................................................vii
表 目 錄............................................................................................................ix
第一章 緒論.......................................................................................................1
1-1 前言.........................................................................................................................1
1-2 研究動機.................................................................................................................3
1-3 論文架構.................................................................................................................4
第二章 基本原理...............................................................................................5
2-1 導論.........................................................................................................................5
2-2 系統架構.................................................................................................................8
2-3 讀取頭的對焦.......................................................................................................12
2-4 藍光碟片讀取頭的評價.......................................................................................14
2-5 公差定義...............................................................................................................15
第三章 傳統藍光碟片讀取頭.........................................................................19
3-1 導論......................................................................................................................19
3-2 物鏡設計..............................................................................................................20
3-2-1 材料選擇.......................................................................................................20
3-2-2 初階設計.......................................................................................................21
3-2-3 設計結果.......................................................................................................22
3-3 準直鏡設計..........................................................................................................25
3-3-1 材料選擇.......................................................................................................25
3-3-2 初階設計.......................................................................................................26
3-3-3 設計結果.......................................................................................................27
3-4 讀取頭系統與公差分析......................................................................................30
3-4-1 讀取頭系統...................................................................................................30
3-4-2 公差分析.......................................................................................................31
3-5 S-curve..................................................................................................................34
3-6 效率分析..............................................................................................................40
3-6-1 使用一般分光鏡...........................................................................................40
3-6-2 使用偏極分光鏡與四分之一波片...............................................................41
第四章 柱面鏡水平擴束高效率藍光碟片讀取頭.........................................43
4-1 導論......................................................................................................................43
4-2 高效率準直鏡設計..............................................................................................44
4-2-1 初階設計......................................................................................................44
4-2-2 設計結果......................................................................................................44
4-3 柱面擴束..............................................................................................................47
4-3-1 原理介紹......................................................................................................47
4-3-2 初階設計......................................................................................................48
4-3-3 設計結果......................................................................................................50
4-4 讀取頭系統與公差分析......................................................................................53
4-4-1 柱面擴束讀取頭系統..................................................................................53
4-4-2 公差分析......................................................................................................55
4-5 S-curve..................................................................................................................57
4-6 效率分析..............................................................................................................63
4-6-1 使用一般分光鏡..........................................................................................63
4-6-2 使用偏極分光鏡與四分之一波片..............................................................64
第五章 菱鏡水平擴束高效率藍光碟片讀取頭.............................................65
5-1 導論......................................................................................................................65
5-2 菱鏡擴束..............................................................................................................66
5-2-1 理論推導.......................................................................................................66
5-2-2 初階設計.......................................................................................................68
5-2-3 設計結果.......................................................................................................69
5-3 讀取頭系統與公差分析.......................................................................................71
5-3-1 菱鏡擴束讀取頭系統...................................................................................71
5-3-2 公差分析.......................................................................................................73
5-4 S-curve...................................................................................................................75
5-5 效率分析...............................................................................................................81
5-5-1 使用一般分光鏡...........................................................................................81
5-5-2 使用偏極分光鏡與四分之一波片...............................................................82
第六章 結論.....................................................................................................84
參考資料.............................................................................................................87參考文獻 〔1〕 Blu-ray Disc White Paper: Blu-ray Disc Format, August 2004
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〔24〕 Blu-ray Disc White Paper: Physic Format Specification for BD-ROM, 4th Edotion, November 2005, pp.13-pp.14.指導教授 孫文信(Wen-Shing Sun) 審核日期 2007-7-11 推文 plurk
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