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As the adoption of injection molding technology increases, injected-molded optical products require higher dimensional accuracy and optical stability than ever before. In the present study, four kinds of molding methods, i.e., conventional injection molding (CIM), injection/compression molding (ICM), rapid heat and cooling the mold(RHCM) and rapid injection/compression molding (RICM) were selected in order to investigate the optical anisotropy of a 7 inch Light Guide Plate(LGP) by examining the gap-wise distribution of birefringence and the extinction angle. The results indicate that the compression process can decrease flow-induced birefringence over the whole region and that rapid heating can decrease the birefringence level better than conventional molding. In addition, for the combination of compression and rapid heating a reversal flow was detected from the distribution of the extinction angle near the gate.
목차
Abstract
1. 서론
2. 이론적 배경
3. 실험장치 및 방법
4. 실험결과
5. 결론
후기
참고문헌
참고문헌 (6)
참고문헌 신청
1. [학위논문] - T. H. Lin / 2009 / / 박사 / University of Akron
2. [학술지(정기간행물)] - Y. B. Lee / 2002 / Numerical Prediction of Residual Stresses and Birefringence in Injection/Compression Molded Center-Gated Disk. Part II / Polym. Eng. Sci 42 (11) : 2273 ~ 2292
3. [기타자료] - S. Matsuda / 1984 / Heat Cycle Injection Compression Molding Method / US. Patent 4442061
4. [학술지(정기간행물)] - M. C. Jeng / 2010 / Rapid Mold Temperature Control in Injection Molding by using Steam Heating / Int. Commun. Heat Mass Transfer 37 (9) : 1295 ~ 1304
5. [단행본] - E. Hecht / 2002 / Optics / Addison-Wesley : 395 ~ 468
2. [학술지(정기간행물)] - Y. B. Lee / 2002 / Numerical Prediction of Residual Stresses and Birefringence in Injection/Compression Molded Center-Gated Disk. Part II / Polym. Eng. Sci 42 (11) : 2273 ~ 2292
3. [기타자료] - S. Matsuda / 1984 / Heat Cycle Injection Compression Molding Method / US. Patent 4442061
4. [학술지(정기간행물)] - M. C. Jeng / 2010 / Rapid Mold Temperature Control in Injection Molding by using Steam Heating / Int. Commun. Heat Mass Transfer 37 (9) : 1295 ~ 1304
5. [단행본] - E. Hecht / 2002 / Optics / Addison-Wesley : 395 ~ 468
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UCI(KEPA) : I410-ECN-0101-2014-551-000251797