We have collected some more information about the Olympus Visible+Infrared Stacked Sensor development form Nikkei Technology. This stacked sensor is Olympus own sensor that is under development and Olympus may use this technology soon in their upcoming MFT cameras, possibly Olympus E-M10 III and Olympus E-M5 III.
“The laminated image sensor is made by combining (1) an image sensor equipped with an RGB color filter for visible light (top layer) and (2) a near-infrared image sensor (bottom layer). Each layer functions as an independent sensor and independently outputs video signals.
The visible-light image sensor is a backside-illuminated type, and its light-receiving layer (made of semiconductor) is as thin as 3μm. Each pixel measures 3.8 x 3.8μm, and the number of pixels is 4,224 x 240.”