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iPhone DOLPi Polarization Camera Developed by Paul Wallace

Reader Paul Wallace contacted me to tell me about the DOLPi electro-optic polarization camera that he built for his iPhone.  His ingenious solution makes use of the iPhone’s flashlight to calibrate and synchronize the control of the polarization analyzer (hacked from a welder’s mask as described in the DOLPi whitepaper).

DOLPi-UI – a diy UVIR/Polarization Imager

I developed the DOLPi-UI filter-wheel-based all-mode camera capable of working in the infrared-visible-ultraviolet range both for imaging and polarimetric analysis. I added a FLIR Lepton® module to extend the camera’s imaging capability (though not polarimetry) to the longwave IR (“thermal” IR). DOLPi-UI is based on the Raspberry Pi NoIR camera, two servos, two filter wheels, a servo

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