Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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Proposed Approaches on Durability Enhancement of Small Structure fabricated on Camera Lens Surface

카메라 렌즈 표면에 형성된 미세 패턴의 내구성 향상 기법 제안

  • Park, Hong Ju (Dept. of optics and mechatronics engineering, Pusan National University) ;
  • Choi, In Beom (Dept. of optics and mechatronics engineering, Pusan National University) ;
  • Kim, Doo-In (Opto-mechatronics Research Institute, Pusan National University) ;
  • Jeong, Myung Yung (Dept. of optics and mechatronics engineering, Pusan National University)
  • 박홍주 (부산대학교 광메카트로닉스공학과) ;
  • 최인범 (부산대학교 광메카트로닉스공학과) ;
  • 김두인 (부산대학교 광메카트로닉스연구소) ;
  • 정명영 (부산대학교 광메카트로닉스공학과)
  • Received : 2019.05.22
  • Accepted : 2019.09.02
  • Published : 2019.09.30
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Abstract

In this study, approached to improve durability of the multi-functional nano-pattern fabricated on the curved lens surface using nanoimprint lithography (NIL) was proposed, and the effects of the proposed methods on functionality after wear test were examined. To improve the mechanical property of ultraviolet(UV)-curable resin, UV-NIL was conducted at the elevated temperature around $60^{\circ}C$. In addition, micro/nano hierarchical structures was fabricated on the lens surface with a durable film mold. Analysis on the worn surfaces of nano-hole pattern and hierarchical structures and measurements on the static water contact angle and critical water volume for roll-off indicated that the UV curing process with elevated temperature is effective to maintain wettability by increasing hardness of resin. Also, it was found that the micro-scale pattern is effective to protect nano-pattern from damage during wear test.

Keywords

Acknowledgement

Supported by : 부산대학교

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