Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Three-dimensional Holographic Display with Twin Image Noise Rejection Using Off-axis Hologram Converting

탈 축 홀로그램 합성을 이용한 쌍 영상 잡음 제거와 3차원 홀로그램 디스플레이

  • Kim, You-Seok (Department of Optical Engineering, Sejong University) ;
  • Kim, Tae-Geun (Department of Optical Engineering, Sejong University) ;
  • Kim, Jin-Tae (Department of Photonic Engineering, Chosun University)
  • 김유석 (세종대학교 광전자공학과) ;
  • 김태근 (세종대학교 광전자공학과) ;
  • 김진태 (조선대학교 광기술공학과)
  • Published : 2009.12.25
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Abstract

We proposed a three-dimensional holographic display technique without twin image noise by converting a complex hologram to an off-axis hologram. To implement the proposed technique we record the complex hologram of a three dimensional object that is composed of two slides located with different depth locations. We added spatial carrier to the complex hologram and after that, extract the real part of the spatial-carrier-added hologram. This converts the complex hologram to an off-axis hologram. We also reconstruct the off-axis hologram using a spatial light modulator for three dimensional display.

본 논문에서는 복소수 홀로그램을 탈 축 홀로그램으로 변환해 쌍 영상 잡음 없이 3차원 홀로그램 디스플레이를 구현하는 방법 을 제안하고 실연하였다. 이러한 기술을 구현하기 위해, 서로 다른 깊이에 위치하는 슬라이드 패턴으로 구성된 3차원 물체의 복소수 홀로그램을 광 스캐닝 홀로그램 시스템을 이용해 추출한 후, 추출된 복소수 홀로그램에 공간 캐리어를 수치적인 방법으로 인가하고 실수 부분만을 추출해 복소수 홀로그램을 탈 축 홀로그램으로 변환한다. 변환된 탈 축 홀로그램을 진폭만을 변조하는 공간 광 변조기에 인가하고, 시준된 레이저 빔을 공간 광 변조기에 투사하여 탈 축 홀로그램을 복원하는 방식으로 3차원 디스플레이를 구현한다.

Keywords

References

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  2. Speckle-Free Digital Hologram with Conversion to Off-Axis Horizontal-Parallax-Only Hologram vol.25, pp.2, 2014, https://doi.org/10.3807/KJOP.2014.25.2.085