The characteristics of Moire signals in diffraction from super-imposed dual gratings

Bin Du

doi:10.1117/12.2294722

1 July 1990 The characteristics of Moire signals in diffraction from super-imposed dual gratings

Bin Du

Proceedings Volume 1230, International Conference on Optoelectronic Science and Engineering '90; 12302D (1990) https://doi.org/10.1117/12.2294722
Event: The Marketplace for Industrial Lasers 1990, 1990, Chicago, IL, United States

Abstract

It is well known that the characteristics of Moire signals: Contrast(C), Sinusoidally(S), and the sensitivity of the light intensity to the variation of air gap between the two gratings(H) are the main factors affecting the accuracy of dual gratings measuring system. The paper presents a general formulation concerning the diffraction light intensity from dual gratings, and discusses the characteristics of diffraction pattern.

Citation Download Citation

Bin Du "The characteristics of Moire signals in diffraction from super-imposed dual gratings", Proc. SPIE 1230, International Conference on Optoelectronic Science and Engineering '90, 12302D (1 July 1990); https://doi.org/10.1117/12.2294722

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