A multi-lens system with a diameter of 600 µm surrounded by four doublet lenses with a diameter of 120 µm....

A multi-lens system with a diameter of 600 µm surrounded by four doublet lenses with a diameter of 120 µm. Smartphone cameras are so small you can carry them anywhere, but what if you want a really small camera? Small enough, perhaps, to be injected into the human body with a syringe… Timo Gissibl, Simon Thiele, Alois Herkommer and Harald Giessen, researchers at the University of Stuttgart, have recently done just that. Detailing their work in Nature Photonics, the team has used 3D printing tec

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