2009 Fiscal Year Final Research Report
High-Accuracy Glass Molding Press for Ultrathin Fresnel Lenses
| Project/Area Number |
19360055
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Production engineering/Processing studies
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| Research Institution | Tohoku University |
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Principal Investigator |
YAN Jiwang Tohoku University, 大学院・工学研究科, 准教授 (40323042)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 光学ガラス / フレネルレンズ / プレス成形 / 金型 / 超精密切削 / 微細形状転写 |
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| Research Abstract |
Recently, the needs for glass Fresnel lenses is increasing for the purpose of miniaturization of optical systems. In this study, molds for high-temperature glass molding were developed and molding experiments for ultra-thin Fresnel lenses were performed. The glass flowing mechanism, stress/strain distribution, and the atomic diffusion phenomena at the interface among the glass, the release agent coating and the mold were investigated by experiments and numerical simulation. Process optimization was performed for improving the service life of the molds.
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