A new type of pixel can steer and analyze light, paving way for devices that function as both camera and display

In 1927, the term “picture element,” later abbreviated to “pixel,” appeared for the first time in the American technology magazine Wireless World. Today, pixels are everywhere: in computer screens and television sets, where they create colorful images, but also in cameras, where they capture images. In any case, however, they do one or the other—either they control light, as in the case of a display, or they analyze it in a camera sensor. Until now, there have been no pixels that could do both.



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