Nikon 18-55mm f/4-5.6 lens patent for a mirrorless APS-C camera

Nikon’s 18-55mm f/4-5.6 lens patent 2012123118 appears to be for a mirrorless APS-C camera. The Nikon 1 system has a sensor smaller than APS-C. Maybe Nikon is working on a camera similar to the Pentax K-01? Patents do not guarantee new product introductions, but almost every new lens fr0m the past few years has been patented first.

Patent details: