대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제32권10호
  • /
  • Pages.784-790
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  • 2008
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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디지털 입자 홀로그래피의 입자 초점면 결정에 관한 실험적 검증

Validation Experiments for the Determination of Particle Focal Positions in Digital Particle Holography

  • 양얀 (전남대학교 기계공학과) ;
  • 강보선 (전남대학교 기계시스템공학부)
  • 발행 : 2008.10.01
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초록

The feasibility and the accuracy of the correlation coefficient(CC) method for the determination of particle positions along the optical axis in digital particle holography were verified by alidation experiments. A traverse system with capable of high precision was used to move the particle objects by exact known distances between several different positions. The particle positions along the optical axis were calculated by the CC method and compared with their exact values to obtain the errors of the focal plane determination. The tested particles were 2D dots in a calibration target along with different sized glass beads and droplets that reflected and caused a three-dimensional effect. The results show that the CC method can work well for both the 2D dots and the 3D particles. The effect of other particles on the focal plane determination was also investigated. The CC method can locate the focal plane of particles with a high precision, regardless of the existence of other particles.

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참고문헌

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