Apple Reveals an odd standalone camera patent figure in a patent about camera related self-mixing interferometry (SMI) sensors - Patently Apple
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Longacre 52-43520 SMI Pressure Sensor 0-100 PSI (w/out QD Lead) - Reliable Welding & Speed On-Line Store
Apple Invents an SMI Ring that Senses Physiological Conditions such as Heart Rate, Oxygen Saturation & more - Patently Apple
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