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Large aperture adaptive doublet polymer lens for imaging applications.

Freddie Santiago, Brett Bagwell, Ty Martinez

    Journal of the Optical Society of America. A, Optics, Image Science, and Vision
    |August 15, 2014
    PubMed
    Summary

    Researchers designed and fabricated adaptive doublet polymer lenses using fluidic chambers. These novel lenses offer variable focal length and were validated through finite element modeling and experimental characterization.

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    Area of Science:

    • Optics and Photonics
    • Materials Science
    • Mechanical Engineering

    Background:

    • Traditional optical systems often rely on rigid glass elements, limiting adaptability.
    • Developing adaptive lenses with variable focal lengths is crucial for advanced optical applications.
    • Fluidic lenses offer a promising avenue for creating tunable optical components.

    Purpose of the Study:

    • To present the complete design, fabrication, and characterization process of adaptive doublet polymer lenses.
    • To develop and utilize a first-order model for designing fluidic doublets.
    • To experimentally validate the performance of these adaptive lenses against numerical models.

    Main Methods:

    • Finite element modeling was employed for the lens design.
    • Adaptive doublet lenses were fabricated with two constant-volume fluidic chambers and three flexible membranes.
    • Experimental characterization involved measuring chromatic focal shift over a range of focal lengths.

    Main Results:

    • A variable focal length doublet lens with a 19.0 mm clear aperture was successfully created.
    • Numerical modeling was compared with experimental measurements of chromatic focal shift.
    • The lenses demonstrated a positive focal length range from 55 mm to 200 mm (f/2.89 to f/10.5).

    Conclusions:

    • The study successfully demonstrates a full design-to-characterization workflow for adaptive doublet polymer lenses.
    • The fabricated fluidic lenses exhibit tunable focal lengths, validating the design approach.
    • This work paves the way for adaptable and reconfigurable optical systems using polymer-based fluidic optics.