Theoretical analysis of light deflection effect on quantitative evaluation in holographic interferometry

Seizo Kato; Naoki Maruyama

doi:10.1117/12.135315

1 January 1992 Theoretical analysis of light deflection effect on quantitative evaluation in holographic interferometry

Seizo Kato, Naoki Maruyama

Proceedings Volume 1553, Laser Interferometry IV: Computer-Aided Interferometry; (1992) https://doi.org/10.1117/12.135315
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

The light deflection characteristics of the measuring beam rays passing through the laminar thermal boundary layer developing along a heated flat plate is theoretically analyzed, and the additional fringe order shift and fringe displacement are compensated to estimate exact values of temperature and Nusselt number. The obtained values compensated for the deflection effect agree with the exact ones of a laminar forced convective heat transfer. The optimum image focal position of the TV-camera taking real-time interferograms is also determined to minimize the measurement error, and is found to be not fixed but to depend on the thermal condition.

Citation Download Citation

Seizo Kato and Naoki Maruyama "Theoretical analysis of light deflection effect on quantitative evaluation in holographic interferometry", Proc. SPIE 1553, Laser Interferometry IV: Computer-Aided Interferometry, (1 January 1992); https://doi.org/10.1117/12.135315

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