Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Design of a Bar-type TIR Lens Having a Freeform Surface for Forming a Line Beam Using an LED Light Source

LED 광원 사용 시 line beam 형성을 위한 자유 곡면 bar type의 TIR lens 설계

  • Seo, Jin-Hee (Department of Nano-optical Engineering, Korea Polytechnic University) ;
  • Lee, Jeong-Su (Department of Nano-optical Engineering, Korea Polytechnic University) ;
  • Kim, Seo-Young (Department of Nano-optical Engineering, Korea Polytechnic University) ;
  • Jeong, You-Jin (Department of Nano-optical Engineering, Korea Polytechnic University) ;
  • Park, Hye-Jin (Department of Nano-optical Engineering, Korea Polytechnic University) ;
  • Nam, Deuk-Young (Department of Nano-optical Engineering, Korea Polytechnic University) ;
  • Jung, Mee-Suk (Department of Nano-optical Engineering, Korea Polytechnic University)
  • 서진희 (한국산업기술대학교 나노-광공학과) ;
  • 이정수 (한국산업기술대학교 나노-광공학과) ;
  • 김서영 (한국산업기술대학교 나노-광공학과) ;
  • 정유진 (한국산업기술대학교 나노-광공학과) ;
  • 박혜진 (한국산업기술대학교 나노-광공학과) ;
  • 남득영 (한국산업기술대학교 나노-광공학과) ;
  • 정미숙 (한국산업기술대학교 나노-광공학과)
  • Received : 2017.10.30
  • Accepted : 2017.11.10
  • Published : 2017.12.25
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Abstract

In this paper, we have studied a method of forming a line beam using a UV LED. The existing linear-type UV LED curing optical system is composed of several cylindrical lenses, but problems such as optical system alignment, enlargement of the module, efficiency, etc. may arise in the future. As an alternative to these problems, a bar-type TIR lens having a freeform surface only in the y-axis direction is designed, to verify that it shows advantages in maximum illuminance, uniformity of illuminance, and flux efficiency.

본 논문은 UV LED를 이용한 line beam 형성 방법에 대한 연구를 진행하였다. 기존의 linear type UV LED 경화기 광학계는 여러 매의 cylindrical lens로 구성되어 있는데 추후 광학계의 align, 모듈의 대형화, 효율 등에서 문제가 발생할 수 있다. 이런 문제점들의 해결을 위한 대안으로서 cylindrical lens와 마찬가지로 Y축 방향에 대해서만 자유 곡면을 가지는 bar type의 TIR lens를 설계하여 최대조도, 조도 균일도, 광속 효율 등에서의 이점이 있음을 검증하였다.

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References

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