Nikon latest patent filed in Japan is for a 58mm f/1.4 lens:
- Patent application: 2013-19993
- Patent release date: January 31, 2013
- Patent filing date: July 8, 2011
- Focal length: 58.0216mm
- Aperture: 1.450
- Half angle of view: 20.82°
- Image height: 21.6mm
- Lens length: 93.67772mm
- Backfocus: 38.71868mm
- Lens design: 9 elements in 5 groups, two aspherical elements

















