Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Single-exposure holographic lithography of ultra-high aspect-ratio microstructures.

Nature communications·2026
Same author

Diffraction-free orbital angular momentum holography.

Optics express·2025
Same author

Extended depth-of-focus femtosecond laser pulses for flexible micromachining.

Optics letters·2025
Same author

Fresnel zone plate outperforms the metalens at high NA.

Optics express·2025
Same author

Computational wide-field imaging of poplar embolism and wound-response with a deployable microscope.

The Review of scientific instruments·2025
Same author

Dynamic spectral fluorescence microscopy via event-based & CMOS image-sensor fusion.

Optics express·2025
Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026
Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026
Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026
Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026
Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026
Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026
See all related articles

Related Experiment Video

Updated: Sep 11, 2025

Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging
07:14

Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging

Published on: April 11, 2025

765

Low-cost, high-volume, manufacturable 0.88 NA multi-wavelength diffractive lens array for optical document security.

Apratim Majumder, Tina M Hayward, Robert Stewart

    Applied Optics
    |August 12, 2025
    PubMed
    Summary
    This summary is machine-generated.

    We developed a novel multi-wavelength diffractive microlens array (MLA) for advanced anti-counterfeiting. This high-numerical-aperture MLA offers extended depth of focus and enables cost-effective, high-volume production for secure documents.

    More Related Videos

    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
    08:48

    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

    Published on: November 22, 2019

    7.7K
    Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
    07:22

    Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

    Published on: February 3, 2023

    6.3K

    Related Experiment Videos

    Last Updated: Sep 11, 2025

    Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging
    07:14

    Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging

    Published on: April 11, 2025

    765
    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
    08:48

    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

    Published on: November 22, 2019

    7.7K
    Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
    07:22

    Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

    Published on: February 3, 2023

    6.3K

    Area of Science:

    • Optics and Photonics
    • Materials Science
    • Nanotechnology

    Background:

    • Refractive microlens arrays (MLAs) face limitations in achieving high-numerical-aperture (NA) and multi-wavelength focusing.
    • Existing solutions for document security lack the integration of advanced optical features for robust anti-counterfeiting.

    Purpose of the Study:

    • To design, manufacture, and characterize a high-NA, multi-wavelength diffractive MLA.
    • To demonstrate the application of this MLA in color-integral imaging for anti-counterfeiting purposes.
    • To highlight the advantages of diffractive MLAs over refractive ones for specific applications.

    Main Methods:

    • Fabrication of a multilevel diffractive microlens array (MLA) using UV casting on a polymer film.
    • Characterization of the MLA's optical performance, including numerical aperture (NA=0.88), multi-wavelength focusing (480 nm, 550 nm, 650 nm), and depth of focus (DoF).
    • Integration of the MLA with high-resolution banknote prints for anti-counterfeiting demonstrations.

    Main Results:

    • Achieved multi-wavelength focusing with a DoF twice the diffraction-limited value.
    • Focused light at three design wavelengths into a spot with a full width at half maximum (FWHM) of approximately 310 nm.
    • Demonstrated effective color-integral imaging for anti-counterfeiting on banknotes with minimum feature widths of 10-15 µm.

    Conclusions:

    • The developed diffractive MLA offers superior performance compared to refractive MLAs for high-NA, multi-wavelength applications.
    • UV casting enables low-cost, high-volume production of these advanced flat optics.
    • The MLA is highly suitable for enhancing security features in banknotes and documents.