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.

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