With Canon several (see here and here) patents one nikon patent also surfaced, Nikon field another two lens patents (2013-019992, 2013-011831) in Japan for the new 58mm f/1.2 lens.
Nikon 58mm f/1.2 lens patent details translated by google
- Focal length: 58.0216
- Aperture: 1.229
- Half angle of view: 20.82 “
- Image height: 21.6
- Lens length: 122.05004
- Backfocus: 38.01861
- Lens design: 9 elements in 7 groups with three aspherical surfaces and possibly two ED elements (2 & 4)
source – egami
