Lightfield-Forum noticed Sony patent application on lightfield camera that maintains the full image sensor resolution while providing stereo imaging. The 73-page, 43-figure US20140071244 application "
Solid-state image pickup device and camera system" by Isao Hirota proposes dual level microlens and two-sided image senosr with 45-deg rotated pixels to achieve their promise:
Thanks to DM for the link!
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