臺灣博碩士論文加值系統

在論文究利用一組微稜鏡陣列板做為雙視角影像擷取元件，即可使CCD拍攝出雙視角的影像。這樣的設計構想下，整體系統使用一台攝影機，就能成功拍攝立體影像對，同時解決位置校準、同步觸發的問題，經實際製作驗證後確實此結構確實有分光能力。
在2008年我們提出在單眼鏡頭相機前加上一微稜鏡陣列板的新型設計，該微稜鏡陣列板預期可以使一般的單眼鏡頭相機拍攝出目標物的左右視角影像對。本研究之目的在於將最初的模擬架構予以實現，即要以射出成型的技術將該微稜鏡陣列片製造出來。
首先利用模流分析軟體Moldex 3D進行模流分析與模具設計。再利用光學影研磨與機械式拋光作出設計的模仁，並使用光學級壓克力Kuraray GH-1000S作為成型材料。利用田口法配合模流分析，經由分析比較後，使用高的成型溫度有助於成型品的複製度、而低射出速度可以減少剪切稀薄的現象，可使整體密度較為均勻，在成型參數由Moldex 3D進行分析確定成品品質後進行射出成型，在射出成型完成後直接進行影像品質效果測試。

This study is aimed developing the technology for manufacture of one of the key components of single-lens stereoscopic: micro-prism array plate. Profile grinder (PG) method is proposed to generate the micro features and then PMMA micro injection molding technique is applied to achieve the final parts. During mold filling, higher shear rate may result in difference in density, which may affect refraction index of the molded parts.
In 2008, we proposed a novel design that had a micro-prism array mounted on the camera to achieve stereoscopic function. This micro-prism array plate was expected to demonstrate right and left images by using only a regular single-lens camera. After verification of the idea, real micro-prism array plates are produced by PMMA micro injection molding technique in this work.
Moldex-3D is used to do the mold flow simulation to help the mold design. The angles and dimensions of the micro-prism are obtained after the optical and flow simulation . The mold cavity with micro features is then manufactured by the profile grinder (PG)method and subsequent polishing process. The material used for molding the micro-prism plates was PMMA (Kuraray GH-1000S). Higher mold temperature not only increase the degree of replication but also help reduce polymer’s viscosity and shear rate and obtain more uniform density of molded parts. The performance of the molded part is tested.
After applying Taguchi’s method in the Moldex-3D simulation, better processing conditions are obtained and used to mold the final parts. The samples are tested and show good stereoscopic function.

中文摘要 ----------------------------------------------------------------------------------- I

英文摘要 ----------------------------------------------------------------------------------- II

誌 謝 ----------------------------------------------------------------------------------- III

目錄 ----------------------------------------------------------------------------------- IV

表目錄 ----------------------------------------------------------------------------------- VI

圖目錄 ----------------------------------------------------------------------------------- VIII

符號說明 ----------------------------------------------------------------------------------- XI

第一章 緒論----------------------------------------------------------------------------- 1
1-1 前言----------------------------------------------------------------------------- 1
1-2 研究動機與目--------------------------------------------------------------- 2
1-2-1 立體像對的拍攝------------------------------------------------- 2
1-2-2 微光學元件製程簡介------------------------------------------------------- 3
1-3 傳統射出成型製程簡介---------------------------------------------------- 4
1-4 成型技術的影響------------------------------------------------------------- 6
1-5 微結構射出成型------------------------------------------------------------- 7
1-6 射出壓縮成型---------------------------------------------------------------- 8
1-7 光學用材料------------------------------------------------------------------- 9
1-7-1 光學玻璃與光學塑膠發展史--------------------------------------------- 9
1-7-2 常用之光學級塑膠材料--------------------------------------------------- 11
1-8 文獻回顧--------------------------------------------------------------------- 13
第二章 研究問題描述--------------------------------------------------------------- 17
2-1 研究動機--------------------------------------------------------------------- 17
2-1-1 光學架構--------------------------------------------------------------------- 17
2-2 研究方向--------------------------------------------------------------------- 19
2-3 射出成型問題描述--------------------------------------------------------- 20
2-4 模流分析--------------------------------------------------------------------- 21
2-5 射出成型之複製度--------------------------------------------------------- 21
2-5-1 整體微結構尺寸的複製度、收縮與翹曲----------------------------- 23
第三章 理論基礎--------------------------------------------------------------------- 25
3-1 射出成型概述--------------------------------------------------------------- 25
3-2 塑膠件之冷卻分析--------------------------------------------------------- 26
3-3 田口品質工程(Taguchis Quality Engineering)-------------------------- 27
3-4-1 望小特性的損失函數------------------------------------------------------ 29
3-4-2 信號雜訊比(Signal to Noise Ratio)--------------------------------------- 30
3-4-3 直交表(Orthogonal Array)應用-------------------------------------------- 31
3-4-4 數據分析流程---------------------------------------------------------------- 33
第四章 實驗設備與方法------------------------------------------------------------- 38
4-1 實驗設備---------------------------------------------------------------------- 38
4-1-1 伺服油壓閉迴路控制射出成型機規格-------------------------------- 39
4-1-2 油冷型模溫機-溫度控制-------------------------------------------------- 40
4-1-3 烘料機------------------------------------------------------------------------- 42
4-2 塑膠原料規格---------------------------------------------------------------- 43
4-3 實驗模具設計---------------------------------------------------------------- 44
4-3-1 模仁微結構製作------------------------------------------------------------- 51
4-3-2 模具表面拋光處理---------------------------------------------------------- 53
4-4 模流分析步驟---------------------------------------------------------------- 57
4-5 射出成型實驗---------------------------------------------------------------- 59
4-5-1 實驗步驟----------------------------------------------------------------------- 60
4-6 成品翹曲量測實驗---------------------------------------------------------- 60
第五章 實驗結果與討論------------------------------------------------------------- 63
5-1 實驗結果與討論------------------------------------------------------------- 63
5-2 射出成型實驗設計------------------------------------------------- 63
5-3 射出成型CAE模擬------------------------------------------------ 64
5-3-1 CAE流動波前之模擬----------------------------------------------- 64
5-3-2 微稜鏡充填、保壓、冷卻分析--------------------------------------------- 65
5-4 收縮翹曲變形之模擬與驗證--------------------------------------------- 70
5-4-1 流動及保壓過程中的收縮行為------------------------------------------ 70
5-4-2 脫模後階段------------------------------------------------------------------- 71
5-5 田口實驗分析--------------------------------------------------------- 71
5-6 微稜鏡複製度檢測---------------------------------------------------------- 80
5-7 實測稜鏡效果------------------------------------------------------- 86
5-8 不同稜鏡翹曲量對拍攝效果之影響------------------------------------ 89
第六章 結論與建議------------------------------------------------------------------- 93
6-1 結論----------------------------------------------------------------------------- 93
文獻回顧 ----------------------------------------------------------------------------------- 94

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