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Related Experiment Video

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Design, Fabrication, and Administration of the Hand Active Sensation Test (HASTe)
07:54

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Published on: September 8, 2015

Null Hartmann and Ronchi-Hartmann tests.

A Cordero-Davila, A Cornejo-Rodriguez, O Cardona-Nunez

    Applied Optics
    |June 26, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Special screens were designed for Ronchi and Hartmann tests, enabling aligned fringes and square patterns. The study found screen filters and observing planes are interchangeable between these optical tests.

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    Area of Science:

    • Optics and optical testing
    • Metrology

    Background:

    • The Ronchi and Hartmann tests are established methods for optical surface analysis.
    • Null tests are crucial for accurate optical metrology, minimizing systematic errors.

    Purpose of the Study:

    • To design specialized screens for Ronchi and Hartmann tests.
    • To achieve aligned straight fringes and square patterns in observed test results.
    • To investigate the interchangeability of optical components between these tests.

    Main Methods:

    • Designing custom screens for Ronchi and Hartmann tests, treating them as null tests.
    • Analyzing the resulting fringe patterns and spatial arrangements.
    • Evaluating the interchangeability of screen filters and observing planes.

    Main Results:

    • Successfully designed screens that produce aligned straight fringes.
    • Achieved a square array for observed patterns in both tests.
    • Demonstrated that screen filters and observing planes can be interchanged between the Ronchi and Hartmann tests.

    Conclusions:

    • The Ronchi and Hartmann tests, when treated as null tests, allow for the design of screens yielding specific, predictable patterns.
    • Component interchangeability offers potential flexibility and efficiency in optical testing setups.