Canon Patent Application: Soft focus lenses

This patent application is for a couple of soft focus lenses.  Again, with most patent applications, these will never see the light of day, but it's interesting to see what Canon is investigating.

The first embodiment is for a 16-50 F2.4 Canon EF-S lens

focal length       15.00 3 0.00  60.00 
F number            2.37   2.37   2.37 
Half angle of view 43.23  25.17  13.22 
Image height       14.10  14.10  14.10 
Lens total length 382.76 382.76 382.76 
BF                 45.29  45.29  45.29 

Another embodiment for a 35-100 2.8 Canon EF-S lens

focal length       35.00  60.01 100.01 
F number            2.80   2.80   2.80 
Half angle of view 23.95  14.53   8.84 
Image height       15.55  15.55  15.55 
Lens total length 269.06 269.06 269.06 
BF                 56.84  56.84  56.84

Japan Patent Application 2018-180132