Researchers find a way to fix the purple halo effect in images

The technology comprises a single-layer surface of nanopillars (pictured above), spaced less than a wavelength apart, which can be used to manipulate the phase, amplitude and polarization of light. It’s a simpler, cheaper and more efficient method of correcting chromatic aberrations, and can work alongside traditional refractive optical components in a wide range of high-volume applications.

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