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Related Experiment Video

Updated: Jun 8, 2026

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
10:16

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

Published on: February 8, 2014

Three-dimensional displacement measurement by a holospeckle interferometry method.

W Z Zhuang, J P Baird, H M Williamson

    Applied Optics
    |September 11, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A new holospeckle interferometry method measures 3D displacement of opaque objects using a single holographic plate. This technique is inexpensive, portable, and suitable for industrial applications.

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    Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
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    Published on: July 5, 2016

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    Last Updated: Jun 8, 2026

    Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
    10:16

    Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

    Published on: February 8, 2014

    Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
    10:28

    Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

    Published on: July 5, 2016

    Area of Science:

    • Optical Engineering
    • Metrology
    • Interferometry

    Background:

    • Traditional holographic interferometry methods for 3D displacement measurement are complex and require high stability, limiting industrial use.
    • Existing techniques like zero-fringe, fringe-localization, and fringe-counting methods involve multiple holographic plates and intricate analysis systems.

    Purpose of the Study:

    • To present a novel holospeckle interferometry method for measuring the three-dimensional displacement of opaque structures.
    • To develop a more accessible and industrially viable alternative to existing interferometric techniques.

    Main Methods:

    • Coupling objective speckle and reflective holographic interferometry.
    • Utilizing a single holographic plate for recording and analysis.
    • Developing an inexpensive and portable recording and analysis system.

    Main Results:

    • Successful measurement of three-dimensional displacement of opaque objects.
    • Achieved good visibility and resolution in displacement measurements.
    • Demonstrated the suitability of the system for industrial environments due to its portability and cost-effectiveness.

    Conclusions:

    • The presented holospeckle interferometry method offers a practical solution for 3D displacement measurement.
    • The technique overcomes the limitations of traditional methods, making it adaptable for widespread industrial application.