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Related Experiment Video

Updated: Apr 22, 2026

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Segmented bimorph mirrors for adaptive optics: segment design and experiment.

Renaud Bastaits, David Alaluf, Mihaita Horodinca

    Applied Optics
    |October 17, 2014
    PubMed
    Summary
    This summary is machine-generated.

    We developed lightweight segmented bimorph mirrors using silicon and piezoceramic actuators for adaptive optics in space. These mirrors demonstrate controlled morphing capabilities, crucial for advanced optical systems.

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    Area of Science:

    • Optics and Photonics
    • Materials Science
    • Aerospace Engineering

    Background:

    • Adaptive optics systems require precise mirror control.
    • Lightweight and robust mirror designs are essential for space applications.
    • Segmented mirrors offer advantages in scalability and manufacturability.

    Purpose of the Study:

    • To introduce and evaluate a novel lightweight segmented bimorph mirror design.
    • To explore the technological feasibility of these mirrors for space missions.
    • To experimentally assess the morphing capabilities and deformation characteristics.

    Main Methods:

    • Design and fabrication of a single mirror segment using monocrystal silicon and piezoceramic (PZT) actuators.
    • Integration of honeycomb electrodes for PZT actuation.
    • Experimental evaluation of the segment's morphing performance and analysis of local deformations (dimples).

    Main Results:

    • Successful demonstration of a lightweight segmented bimorph mirror demonstrator.
    • Experimental validation of the segment's morphing capability.
    • Identification and analysis of electrode-induced local deformations.

    Conclusions:

    • The developed segmented bimorph mirror is a promising technology for space-based adaptive optics.
    • The design addresses critical technological aspects for space applications.
    • Further research into deformation mitigation can enhance performance.