研究生: |
王志豪 Chih-hao Wang |
---|---|
論文名稱: |
振動式射壓於複合式光學元件射出成形之研究 Research on Hybrid Optical Elements by Vibratile Injection Compression Molding |
指導教授: |
陳炤彰
Chao-Chang A. Chen |
口試委員: |
楊申語
Sen-Yeu Yang 黃國政 Kuo-Cheng Huang 沈永康 Yung-Kung Shen 林紀穎 Chi-Ying Lin |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2010 |
畢業學年度: | 98 |
語文別: | 中文 |
論文頁數: | 163 |
中文關鍵詞: | 複合式光學元件 、振動式射壓 、非球面形狀誤差 、微溝槽成形率 |
外文關鍵詞: | Hybrid Optical Element, Vibratile Injection Compression Molding, aspheric form error, Groove Filling Ratio. |
相關次數: | 點閱:246 下載:14 |
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本研究主要是要發展振動式射壓(Vibratile Injection Compression Molding, V-ICM)搭配變模溫技術(Varithermo Mold Temperature, VMT),並進行複合式光學元件之射出成形實驗了解相關參數對於微結構及非球面的影響,同時比較PMMA及COP 480R在成形上的差異,以及了解不同塑料間殘留應力的分析,再利用此製程所得到的複合式光學元件,進行光學色像差(Chromatic Aberration)及MTF圖形的比較。研究中整合利用V-ICM搭配VMT,以達到提升微溝槽的複製性,同時維持非球面表面輪廓精度的目的,並將所成形的複合式光學元件進行光學性質、微結構成形率、非球面形狀誤差及殘留應力分佈情形的比較。研究顯示V-ICM確實可有效的提升微溝槽成形率。此外,在固定模溫,不同的啟動時機點下,其微溝槽成形率有明顯的提升,並且維持住非球面的形狀誤差,而在使用COP 480R塑料於V-ICM搭配VMT的製程當中,在高模溫下的微溝槽成形率可達98.09%,非球面的形狀誤差為7.26μm,本研究成果可有效提升多尺度複合式透鏡的精度,未來可應用於成形精密度高且同時具有不同尺寸特徵的非球面或自由曲面的複合式透鏡。
This research is to develop Vibratile Injection Compression Molding (V-ICM) and integrate the Varithermo Mold Temperature (VMT) technology for increasing the Groove Filling Ratio (GFR) and reduce aspheric form errors of hybrid optical elements. PMMA and COP 480R have been used to investigate the difference in processing, and to understand the residual stress, chromatic aberration (CA) and the Modulation Transfer Function (MTF) graph for comparison. Groove filling ratio (GFR), aspheric form error and the distribution of residual stress have been studied and discussed. Results have shown that the V-ICM can enhance the GFR effectively. In addition, the fixed mold temperature and different trigger time points affect the GFR significantly under the same aspheric form errors. The GFR can achieve nearly 98.09% and aspheric form error is about 7.26μm with high mold temperature in the COP 480R processing with V-ICM and VMT technology. The results of this study can effectively enhance the accuracy of multi-scale hybrid optical elements. In the future, this technology can apply to produce the high accuracy and also have the aspheric form with different multi-scale sizes, or freeform optical elements.
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