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Related Experiment Video

Updated: Jun 16, 2026

Micro/Nano-scale Strain Distribution Measurement from Sampling Moir&#233; Fringes
06:56

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Published on: May 23, 2017

Lens distortion equation using moiré.

A M Khalil, P Fazio

    Applied Optics
    |February 4, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces moiré fringes to derive lens distortion equations and a correction factor. This method eliminates the need for high-quality lenses in precise strain measurement instrumentation.

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    Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher
    05:14

    Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher

    Published on: February 23, 2018

    Area of Science:

    • Optics
    • Metrology
    • Mechanical Engineering

    Background:

    • Accurate lens distortion correction is crucial for precision measurements.
    • Existing methods often require expensive, high-quality optical components.

    Purpose of the Study:

    • To develop a novel technique for deriving lens distortion equations using moiré fringes.
    • To establish a correction factor equation to enhance measurement accuracy without high-cost optics.

    Main Methods:

    • Utilizing moiré fringe patterns to analyze lens system aberrations.
    • Deriving a mathematical model for lens distortion based on fringe analysis.
    • Developing a correction factor derived from the distortion equation.

    Main Results:

    • Successfully derived the distortion equation of the lens system.
    • Developed a practical correction factor equation.
    • Demonstrated the applicability to strain measuring instrumentation.

    Conclusions:

    • The moiré fringe technique provides an effective method for lens distortion analysis.
    • The derived correction factor enables accurate absolute measurements using standard quality lenses.
    • This approach offers a cost-effective solution for strain measurement applications.