From the patent it is clear that Nikon is working on a curved sensor camera. We have seen curved sensor patent and even sample image from Sony we also know that Canon is also working on Curved sensor But it’s the first time we are seeing a Curved sensor from Nikon.
The biggest advantages of the curved sensor is it mimics human eye and with a very simple lens design you can achieve high quality images as a results of simple lens design and less obstacles present in the path of light and in-turn you get ultimate image quality.
Take a look at the Sony curved sensor patent here
Sony Compact camera lens patent for curved sensor
Sony already have 35mm F1.8 patent for a compact camera as you can see in the image above
source – mirrorlessrumors.com
I think using such sensor will increase image quality and decrease lenses cost.