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  • Researchers confront optics and data-transfer challenges with 3D-printed lens

    Illinois researchers developed a spherical lens that allows light coming into the lens from any direction to be focused into a very small spot on the surface of the lens exactly opposite the input direction. This is the first time such a lens has been made for visible light.

    Illinois researchers developed a spherical lens that allows light coming into the lens from any direction to be focused into a very small spot on the surface of the lens exactly opposite the input direction. This is the first time such a lens has been made for visible light.

    Graphic by Michael Vincent

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  • Editor’s notes:

    To reach Paul Braun, call 217-244-7293; email: pbraun@illinois.edu.

    To reach Lynford Goddard, call 217-244-0799; email: lgoddard@illinois.edu.

    The paper “Direct laser writing of volumetric gradient index lenses and waveguides” is available online and from the U. of I. News Bureau. DOI: 10.1038/s41377-020-00431-3