Study of Four Cavities Injection Molding for Plastic Aspherical Lens
碩士 === 國立虎尾科技大學 === 光電與材料科技研究所 === 95 === It is well-known that the silhouette of a plastic aspherical lens is delicately related to the plastic injection flow condition. For example, even a slight shrinkage of molten plastic (owing to some undesirable temperature variations), or a mere imbalance in...
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ndltd-TW-095NYPI51240032019-09-22T03:40:56Z http://ndltd.ncl.edu.tw/handle/xr6et5 Study of Four Cavities Injection Molding for Plastic Aspherical Lens 一模四穴塑膠非球面鏡片成型之研究 Ying-ching Wu 吳盈慶 碩士 國立虎尾科技大學 光電與材料科技研究所 95 It is well-known that the silhouette of a plastic aspherical lens is delicately related to the plastic injection flow condition. For example, even a slight shrinkage of molten plastic (owing to some undesirable temperature variations), or a mere imbalance in the fluency of the material flow can all result in severe distortion in the output lenses. As a matter of fact, the lens shape practically determines the ultimate optical and image qualities to such an extent that the shape variations among a given type of lenses produced from parallel multiple injection cavities become a dominant cost factor. This work thus intends to address the R&D, manufacturing and mass production phases of the plastic injection process established for the making of lenses for high-pixel cameras to be equipped on the portable phones. In particular, two key issues are attacked, namely, under several pre-determined injection conditions the relationship between the plastic flow imbalance and the lens surface profile distortion. Finally, a conclusion will be drawn from conducted experiments, and based on this a new perspective will be offered. Lih-horng Shyu 徐力弘 2007 學位論文 ; thesis 89 zh-TW |
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碩士 === 國立虎尾科技大學 === 光電與材料科技研究所 === 95 === It is well-known that the silhouette of a plastic aspherical lens is delicately related to the plastic injection flow condition. For example, even a slight shrinkage of molten plastic (owing to some undesirable temperature variations), or a mere imbalance in the fluency of the material flow can all result in severe distortion in the output lenses. As a matter of fact, the lens shape practically determines the ultimate optical and image qualities to such an extent that the shape variations among a given type of lenses produced from parallel multiple injection cavities become a dominant cost factor. This work thus intends to address the R&D, manufacturing and mass production phases of the plastic injection process established for the making of lenses for high-pixel cameras to be equipped on the portable phones. In particular, two key issues are attacked, namely, under several pre-determined injection conditions the relationship between the plastic flow imbalance and the lens surface profile distortion. Finally, a conclusion will be drawn from conducted experiments, and based on this a new perspective will be offered.
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author2 |
Lih-horng Shyu |
author_facet |
Lih-horng Shyu Ying-ching Wu 吳盈慶 |
author |
Ying-ching Wu 吳盈慶 |
spellingShingle |
Ying-ching Wu 吳盈慶 Study of Four Cavities Injection Molding for Plastic Aspherical Lens |
author_sort |
Ying-ching Wu |
title |
Study of Four Cavities Injection Molding for Plastic Aspherical Lens |
title_short |
Study of Four Cavities Injection Molding for Plastic Aspherical Lens |
title_full |
Study of Four Cavities Injection Molding for Plastic Aspherical Lens |
title_fullStr |
Study of Four Cavities Injection Molding for Plastic Aspherical Lens |
title_full_unstemmed |
Study of Four Cavities Injection Molding for Plastic Aspherical Lens |
title_sort |
study of four cavities injection molding for plastic aspherical lens |
publishDate |
2007 |
url |
http://ndltd.ncl.edu.tw/handle/xr6et5 |
work_keys_str_mv |
AT yingchingwu studyoffourcavitiesinjectionmoldingforplasticasphericallens AT wúyíngqìng studyoffourcavitiesinjectionmoldingforplasticasphericallens AT yingchingwu yīmósìxuésùjiāofēiqiúmiànjìngpiànchéngxíngzhīyánjiū AT wúyíngqìng yīmósìxuésùjiāofēiqiúmiànjìngpiànchéngxíngzhīyánjiū |
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1719254079728779264 |