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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
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Published on: May 23, 2017

Generation of surface contours by moiré patterns.

D M Meadows, W O Johnson, J B Allen

    Applied Optics
    |January 16, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Moiré interference patterns can accurately represent surface contours. This study derives conditions for generating these contour patterns, showing their flexibility and usefulness in surface contouring applications with experimental validation.

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    Area of Science:

    • Optics and Photonics
    • Metrology
    • Surface Science

    Background:

    • Moiré interference patterns arise from the superposition of grids.
    • Previous observations noted contour-like patterns from grid shadows.
    • The precise relationship between moiré patterns and surface contours was not fully established.

    Purpose of the Study:

    • To derive the conditions under which moiré interference patterns correspond to planar contours.
    • To suggest systems for generating moiré contour patterns.
    • To demonstrate the utility and flexibility of moiré contouring for surfaces.

    Main Methods:

    • Theoretical derivation of conditions for moiré patterns to represent planar contours.
    • Development of systems for generating moiré contour patterns.
    • Experimental validation of the proposed moiré contouring technique.

    Main Results:

    • Established the theoretical basis for moiré patterns accurately mapping surface contours.
    • Proposed practical systems for generating these contour patterns.
    • Experimental results confirmed the effectiveness and flexibility of moiré contouring.

    Conclusions:

    • Moiré contour patterns offer a valuable and adaptable method for surface contouring.
    • The derived conditions enable precise generation of contour maps using moiré interference.
    • The technique is experimentally validated as a practical tool in metrology.