The Nikon 1 line, with exception of the J5 (which used Sony's sensor), used sensors made by Aptina.

Aptina's sensors were pretty spectacular from an AF perspective in that they had phase-shift AF on-sensor in 2011. The AF was as close as you could get to DSLRs on a mirrorless camera for quite some time. It's just too bad that Nikon came up with a weird set of 1st generation Nikon 1 cameras that made no sense to anybody.

IIRC, Aptina ended up cross-licensing their patents to Sony.