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Related Concept Videos

Total Internal Reflection Fluorescence Microscopy01:05

Total Internal Reflection Fluorescence Microscopy

Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
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A Stable Phantom Material for Optical and Acoustic Imaging
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High-sensitivity reflection-transmission moire deflectometer.

O Kafri, L Glatt

    Applied Optics
    |June 5, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel moire deflectometer with an integrated telescope offers high-sensitivity optical testing. This versatile setup accurately measures both phase objects and specular surfaces, including large components.

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    Area of Science:

    • Optics and Optical Engineering
    • Metrology

    Background:

    • Traditional moire deflectometry has limitations in testing large optical components and diverse surface types.
    • Existing setups may require significant modifications for different measurement applications.

    Purpose of the Study:

    • To introduce a new moire deflectometer design incorporating a telescope.
    • To demonstrate its suitability for measuring both phase objects and specular surfaces with minimal adjustments.
    • To enable high-sensitivity testing of large-aperture optical systems.

    Main Methods:

    • Development of a novel moire deflectometer incorporating a built-in telescope.
    • Adaptation of the setup for measurements of phase objects.
    • Adjustment of the setup for measurements of specular surfaces.

    Main Results:

    • The proposed setup effectively measures both phase objects and specular surfaces.
    • Minimal adjustments are required to switch between measurement types.
    • High-sensitivity testing of large optical components (2.54-cm aperture) is achieved.

    Conclusions:

    • The telescope-based moire deflectometer is a versatile and sensitive instrument.
    • This design simplifies the testing of various optical elements.
    • It offers a practical solution for metrology of large optical systems.