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Keyword: fullcolor

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  • Revolutionary ultra-thin 'meta-lens' enables full-color imaging

    10/03/2018 2:56:16 PM PDT · by BenLurkin · 15 replies
    phys.org ^ | October 3, 2018, | Columbia University School of Engineering and Applied Science
    Columbia Engineering researchers have created the first flat lens capable of correctly focusing a large range of colors of any polarization to the same focal spot without the need for any additional elements. Only a micron thick, their revolutionary "flat" lens is much thinner than a sheet of paper and offers performance comparable to top-of-the-line compound lens systems. The findings of the team, led by Nanfang Yu, associate professor of applied physics , are outlined in a new study, published today by Light: Science & Applications. A conventional lens works by routing all the light falling upon it through different...