研究生: |
李瑞陽 Jui-Yang Lee |
---|---|
論文名稱: |
殘留雙折射和光學性質量測應用於射出成形之研究 Research of Residual Birefringence and Optical Properties Measured by injection Molding |
指導教授: |
陳炤彰
Chao-Chang Chen |
口試委員: |
楊申語
Sen-Yeu Yang 李世榮 Shah-Rong Lee 黃招財 Chao-Tsai Huang 謝宏麟 Hung-Lin Hsieh |
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: | 2015 |
畢業學年度: | 103 |
語文別: | 中文 |
論文頁數: | 127 |
中文關鍵詞: | 殘留雙折射 、白光光彈 、射出成形 、非球面透鏡 、調制轉換函數 |
外文關鍵詞: | Residual birefringence, White light photoelastic, Injection molding, Aspheric lens, Modulation transfer function |
相關次數: | 點閱:387 下載:9 |
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本研究研發白光光彈軟體對殘留雙折射進行量測,並使用自組式偏光儀量測射出成形之非球面透鏡,探討非球面透鏡殘留雙折射(Residual birefringence)、調制轉換函數(Modulation transfer function, MTF)、有效焦長(Effective focal length, EFL)與曲率半徑誤差(Radius error)。藉由兩階段射出成形實驗,優化射出成形殘留雙折射,實驗結果顯示V/P切換點、保壓壓力以及充填速度為影響殘留雙折射之主要參數。將V/P切換點提前、設定兩段式充填與降低保壓壓力能有效降低最大條紋級數約32.7%。使用自組式MTF量測儀進行量測,得知最大條紋級數小於2.76N時,解像能力MTF50約可提升13.6%,MTF10最大能提升約40%。商用機台於110 lp/mm時可提升約15.4%,由此可知殘留雙折射確實為影響透鏡成像品質的成因之一,而透鏡之曲率誤差與殘留雙折射對EFL與MTF具有影響性,當殘留雙折射愈大時,EFL誤差較低但成像品質較差。研究結果顯示白光光彈軟體能有效量化條紋級數1N以下之光彈條紋,其條紋級數誤差最大約為0.0298N,本研究研發之白光光彈軟體能夠降低幾何輪廓對產品整體殘留雙折射之判斷誤差,因此不同材料及幾何形狀之產品皆可透過白光光彈軟體進行量測,未來可將本研究應用於顯微鏡和手機鏡頭之高解析塑膠射出成形鏡片分析
White light photoelastic theory is used to design residual birefringence analysis software and also used polariscope to measure the aspheric lens fabricated by injection molding. Moreover, the residual birefringence, modulation transfer function, effective focal length and radius error of aspheric lens have been investigated and discussed. Through the two-stage injection molding experiments, it can achieve the residual birefringence optimization. The main parameters include V/P position, packing pressure and filling velocity. Setting V/P position and two stage filling with lower packing pressure, it can reduce fringe order amount 32.7%. Results of self-assemble MTF measurement shows that the fringe order in image quality is less than 2.76N and MTF50 can be promoted to 13.6%, even MTF10 can be promoted to 40%. On the other hand, the commercial MTF measurement in 110 lp/mm the MTF can be improved to 15.4%. Through this result, residual birefringence is one of the factors which can affect lens image quality. Radius error and residual birefringence can also affect EFL and MTF. The larger residual birefringence causes less EFL error and decreases image quality. A white light photoelastic software can been modified and used to quantify fringe order less than 1N and maximize fringe order error approximately 0.0298N. Finally this study can adapt to measure difference material and geometry product. Future study can focus on high-resolution plastic lens for microscopic phone camera.
[1] 黃文盛,“混合PC/PMMA材料應用於LED照明元件射出成形研究”,國立台灣科技大學,機械工程研究所碩士論文,2011。
[2] 葉敬賢,“複合式光學元件於振動式射出壓縮成形之殘留應力及光學品質研究”,國立台灣科技大學,機械工程研究所碩士論文,2011。
[3] 陳思婷,“級進式射壓成形應用於具有次波長微米結構之複合式菱鏡研究”,國立台灣科技大學,機械工程研究所碩士論文,2013。
[4] 陳啟榮,“數位光彈分析偏光儀系統之研發”,國立成功大學,機械工程研究所碩士論文,台灣,2004。
[5] 徐仰億,“數位光彈之應力定量分析”,國立台灣科技大學,機械工程研究所碩士論文,2009。
[6] 陳智榮,“白光光彈術於塑膠成形平板殘留應力分析”,2009機電整合科技應用研討會論文集暨全國大專生機電整合專題論文研討會,2009。
[7] 戴采綸,“應用光彈補償法於射出壓縮成形複合式菱鏡對殘留應力及光學特性研究”,國立台灣科技大學,機械工程研究所碩士論文,2014。
[8] D. Brewster, "Experiments on the Depolarisation of Light as Exhibited by Various Mineral, Animal, and Vegetable Bodies, with a Reference of the Phenomena to the General Principles of Polarisation," Philosophical Transactions of the Royal Society of London, vol. 105, pp. 29-53, 1815.
[9] E. G. Coker, L. N. G. Filon, and H. T. Jessop, A Treatise on Photoelasticity, 1930.
[10] K. Ramesh and S. K. Mangal, "Data acquisition techniques in digital photoelasticity: A review," Optics and Lasers in Engineering, vol. 30, pp. 53-75, 1998.
[11] A. Ajovalasit, S. Barone, and G. Petrucci, "Towards RGB photoelasticity: Full-field automated photoelasticity in white light," Experimental Mechanics, vol. 35, pp. 193-200, 1995.
[12] A. Ajovalasit and G. Petrucci, "Developments in RGB photoelasticity," Applied Mechanics and Materials, vol. 3-4, pp. 205-210, 2005.
[13] A. Ajovalasit, G. Petrucci, and M. Scafid, "RGB Photoelasticity: Review and Improvements," Strain, vol. 46, pp. 137-147, 2010.
[14] A. Ajovalasit, G. Petrucci, and M. Scafid, "RGB photoelasticity applied to the analysis of membrane residual stress in glass," Measurement Science and Technology, vol. 23, 2012.
[15] A. Ajovalasit, G. Petrucci, and M. Scafid, "A critical assessment of automatic photoelastic methods for the analysis of edge residual stresses in glass," Strain Analysis for Engineering Design, vol. 49, pp. 361-375, 2014.
[16] K. Ramesh, T. Kasimayan, and B. N. Simon, "Digital photoelasticity – A comprehensive review," Strain vol. 46, pp. 245-265, 2011.
[17] D. Swain, J. Philip, and S. A. Pillai, "A modified regularized scheme for isochromatic demodulation in RGB photoelasticity," Optics and Lasers in Engineering, vol. 61, pp. 39-51, 2014.
[18] A. Ajovalasit, G. Petrucci, and M. Scafid, "Phase shifting photoelasticity in white light," Optics and Lasers in Engineering, vol. 45, pp. 596-611, 2007.
[19] S. Yoneyama and M. Takashi, "A new method for photoelastic fringe analysis from a single image using elliptically polarized white light," Optics and Lasers in Engineering, vol. 30, pp. 441-459, 1998.
[20] Y. C. Chen, C. H. Chen, and S. C. Chen, "Effects of processing conditions on birefringence development in injection molded parts. II. Experimental measurement," Polymer International, vol. 40, pp. 251-259, 1996.
[21] M. D. Chidley, K. D. Carlson, R. R. Richards-Kortum, and M. R. Descour, "Design, assembly, and optical bench testing of a high-numerical-aperture miniature injection-molded objective for fiber-optic confocal reflectance microscopy," APPLIED OPTICS, vol. 45, pp. 2545-2554, 2006.
[22] C. Weng, W. B. Lee, and S. To, "Birefringence techniques for the characterization of residual stresses in injection-moulded micro-lens arrays," Polymer Testing, vol. 28, pp. 709–714, 2009.
[23] 湯峻清,“非球面陣列透鏡之射出成形研究”,國立台灣科技大學,機械工程研究所碩士論文,2011。
[24] S. Y. Pak, S. Y. Kim, S. H. Kim, and J. R. Youn, "Measurement of residual stresses in polymeric parts by indentation method," Polymer Testing, vol. 32, pp. 946-952, 2013.
[25] P. Xie, F. Guo, Z. Jiao, Y. Ding, and W. Yang, "Effect of gate size on the melt filling behavior and residual stress of injection molded parts," Materials and Design, vol. 53, pp. 366-372, 2014.
[26] A. G. Morales and U. F. Lo´pez, "Residual stresses in injection molded products," Journal of Materials Science, vol. 49, pp. 4399-4415, 2014.
[27] S. H. Youn, H. S. Son, D. L. Marks, J. M. Shaw, P. O. McLaughlin, S. D. Feller, et al., "Optical performance test and validation of microcameras in multiscale gigapixel imagers," Optics EXPRESS, vol. 22, pp. 3712-3723, 2014.
[28] 張庭,“自動化影響處理之穿透式光彈儀”,中華民國專利M394457,2010。
[29] 林瑞璋,王永成,何祥裕,“定量性應力應變偏光測定機”,中華民國專利I349769,2011。
[30] 張奇偉,“光彈法檢測方法與運用於構件之殘餘應力檢測方法”,中華民國專利I368024,2012。
[31] 洪光民,“圓盤與長條樑之理論解析與實驗光學全場量測”,國立臺灣大學,機械工程研究所博士論文,2002。
[32] S. Kale and K. Ramesh, "Advancing front scanning approach for three-fringe photoelasticity," Optics and Lasers in Engineering, vol. 51, pp. 592-559, 2013.
[33] C. Weng, W. B. Lee, S. To, and B. Y. Jiang, "Numerical simulation of residual stress and birefringence in the precision injection molding of plastic microlens arrays," International Communications in Heat and Mass Transfer, vol. 36, pp. 213-219, 2009.
[34] 李佳柔,“整合次波長微結構之菲涅爾聚光元件於射出成形研究”,國立台灣科技大學,機械工程研究所碩士論文,2012。
[35] 詹家銘,“多尺度非球面陣列透鏡之振動式射出壓縮成形研究”,國立台灣科技大學,機械工程研究所碩士論文,2012。
[36] 王志豪,“振動式射壓於複合式光學元件射出成型之研究”,國立台灣科技大學,機械工程研究所碩士論文,2010。
[37] J.W.Dally, Experimental Stress Analysis, 1991.
[38] 楊力權,“光學追跡應用於塑膠非球面模造鏡片收縮誤差補償分析”,國立台灣科技大學,機械工程研究所碩士論文,2007。