솔벤트 증기처리 Reflow를 이용한 폴리머 마이크로 렌즈 제작 및 특성고찰Fabrication and Characterization of Polymer Microlens using Solvent-vapor-assisted Reflow
- Other Titles
- Fabrication and Characterization of Polymer Microlens using Solvent-vapor-assisted Reflow
- Authors
- 양승우; 김신형; 김보현; 조영학
- Issue Date
- Mar-2015
- Publisher
- 한국정밀공학회
- Keywords
- Microlens (마이크로 렌즈); Hot-embossing (핫-엠보싱 공정); Solvent-vapor-assisted reflow (솔벤트 증기처리 리플로우); Light concentrating ratio (집광도)
- Citation
- 한국정밀공학회지, v.32, no.3, pp.299 - 305
- Journal Title
- 한국정밀공학회지
- Volume
- 32
- Number
- 3
- Start Page
- 299
- End Page
- 305
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/8882
- ISSN
- 1225-9071
- Abstract
- In this paper, we propose a simple and low-cost fabrication method of polymer microlens using solvent-vapor-assisted reflow (SVAR). Metal molds for replication of polymer were fabricated using micro milling and the cylindrical shape of polymer was imprinted using hot-embossing process. The cylindrical shape of polymer was changed to hemispherical lens shape by SVAR. The characteristics of fabricated microlens were evaluated according to the condition of SVAR such as temperature and time. The focal length of polymer microlens could be controlled more easily in low-temperature and long-time condition than in high-temperature and short-time condition. That is, the level of concentrated light to focal point could be improved through the control of temperature and time. Also, we confirmed that toluene was more appropriate solvent than acetone in fabrication of PMMA polymer microlens using SVAR.
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