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Metalenses are flat lenses that use metasurfaces to focus light. The metasurfaces are a series of artificial antennae that manipulate the optical response of the incident light, including its amplitude phase and polarization.
A new nanophotonic light-field camera can combine macro and telephoto magnification into one lens with unlimited depth of field.
For years, engineers have made microchips ever smaller and more powerful. Now they’re applying the technology to a host of miniature marvels