Scientists have developed a lens-free mid-infrared camera using a modern twist on pinhole imaging. The system uses nonlinear crystals to convert infrared light into visible, allowing standard sensors ...
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Ancient 4th-century pinhole concept reimagined in lens-free infrared camera design
Pinhole imaging, first described by philosopher Mozi in the 4th century BC, offered unlimited depth and no distortion. This modern adaptation extends those benefits into the mid-infrared range, where ...
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