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Updated: Jun 8, 2026

Scanning Light Scattering Profiler (SLPS) Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses
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Object illumination angle measurement in speckle interferometry.

T W Ng, F S Chau

    Applied Optics
    |October 12, 2010
    PubMed
    Summary
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    Accurate speckle interferometry relies on precise object illumination angle measurements. A novel moiré effect method provides a fast and accurate solution for determining this critical angle, enhancing fringe interpretation.

    Area of Science:

    • Optical Metrology
    • Interferometry and Speckle Techniques

    Background:

    • Speckle interferometry is sensitive to measurement errors.
    • The object illumination angle is a critical parameter affecting fringe interpretation accuracy.

    Purpose of the Study:

    • To develop a method for accurate measurement of the object illumination angle.
    • To improve the reliability of speckle interferometry data.

    Main Methods:

    • A technique utilizing the moiré effect was developed.
    • The proposed method allows for direct measurement of the object illumination angle.

    Main Results:

    • The moiré effect-based technique provides fast and accurate measurements.
    • Implementation of the method is straightforward.

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    Related Experiment Videos

    Last Updated: Jun 8, 2026

    Scanning Light Scattering Profiler (SLPS) Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses
    06:55

    Scanning Light Scattering Profiler (SLPS) Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses

    Published on: June 6, 2017

    Measuring the Behavioral Effects of Intraocular Scatter
    05:10

    Measuring the Behavioral Effects of Intraocular Scatter

    Published on: February 18, 2021

    Measuring Spatially- and Directionally-varying Light Scattering from Biological Material
    11:57

    Measuring Spatially- and Directionally-varying Light Scattering from Biological Material

    Published on: May 20, 2013

    Conclusions:

    • The proposed method effectively addresses errors in object illumination angle measurement.
    • This technique enhances the accuracy and reliability of speckle interferometry.