A patent showing a curved sensor equipped with DPAF has appeared, like the stacked sensor patents, curved sensors appear to be getting closer to being brought to a product.
Canon News interprets Japan Patent Application 2018-014657:
The sensor uses a piezoelectric device to drive the shape change of the curved sensor and has strain gauges (219) to measure the amount of curvature applied. This sensor would automatically change it's curve shape depending on the characteristics of the lens and also dependant upon the area of focus detection.
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