Metalens Mona Lisa Figure (IMAGE)
Caption
The UW team's metalens, coupled with computational processing, can capture images for a variety of light wavelengths with very low levels of chromatic aberrations. For this black-and-white image of the Mona Lisa (at top), the first row shows how well a green-optimized metalens captures the image for green light, but causes severe blurring for blue and red wavelengths. The UW team's improved metalens (second row) captures images with similar types of aberrations for blue, green and red wavelengths, showing uniform blurring across wavelengths. But computational filtering removes most of these aberrations, as shown in the bottom row, which is a substantial improvement over a traditional metalens (first row), which is only in focus for green light and is unintelligible for blue and red.
Credit
Shane Colburn/Alan Zhan/Arka Majumdar
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