研究生: |
李英堯 In-Yao Lee |
---|---|
論文名稱: |
應用於光學讀寫頭之靜電式薄膜反射鏡分析與設計 An Analysis and Design of the Electrostatic Membrane Mirror Applied to Optical Pickup Head |
指導教授: |
宋震國
Cheng-Kuo Sung |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 動力機械工程學系 Department of Power Mechanical Engineering |
論文出版年: | 2000 |
畢業學年度: | 88 |
語文別: | 中文 |
論文頁數: | 86 |
中文關鍵詞: | 微機電 、光學讀寫頭 、薄膜 、靜電 、鏡子 |
外文關鍵詞: | MEMS, pickup head, membrane, electrostatic, mirror |
相關次數: | 點閱:3 下載:0 |
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本論文主要是針對目前光碟機讀寫頭因質量重、體積大導致靈敏度低、響應遲鈍的缺點,設計出一款構想創新的光學讀寫頭。其主要改善方式為利用微機電製程製作出一靜電式薄膜反射鏡以替代原讀寫頭內45º反射鏡之功能,並希望能以薄膜聚焦之特性將讀寫頭內之聚焦物鏡移除,以製作出更輕薄短小之光學讀寫頭,使光學儲存技術有所提昇。本論文利用幾何光學分析讀寫頭光路並由板殼理論推導出薄膜形變與工作電壓之關係,設計出最佳之薄膜尺寸參數,並由微機電製程製作出設計之薄膜,再以實驗量測方式驗證此薄膜反射鏡之性能表現並與理論值間作一比較。結果顯示,本文提出之設計分析方法具可行性,此外並建議出未來深入研究的目標。
This research presents a novel design of the optical pickup head for reducing cost as well as improving the dynamic behavior due to its heavy mass and large volume deficiencies. The electrostatic deformable mirror designed and fabricated on the basis of micro-electro-mechanical technique are used to replace the oblique reflection mirror. The focus ability of the deformable mirror may also remove the object lens from in the pickup head. With this design, pickup head can be much lighter and smaller to meet the future trend of the optical storage technology. The relationship between membrane deformation and applied voltage are constructed based on the theory of geometric optics and theory of plates. The static and dynamic behaviors of the deformable mirror are measured by an interfere microscope and laser doppler vibrometer. Good agreement between the experimental and analytical results indicates the correctness of the proposed design method.
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