Toshiba develops an image sensor that can be switched between 2D and 3D imaging modes. To get a switchable microlens array for 3D light field mode, Toshiba sensor uses a liquid crystal for 8,000 gradient-index (GRIN) lens array. The lenses have 50um pitch and can be switched between 2MP-resolving 2D and a depth-resolving 3D modes by application of +/-4V control voltage:
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