Canon Patent Application: TS-E 50mm 2.8L Macro

Even though this lens is released, this patent application is clearly for the 50mm TS-E Macro with a very large 33mm image height (66mm diameter image circle).

For those that love the TS-E 50mm, this patent application is for you.

Infinite distance-0.5 time 
Focal distance 51.40 50.30 
F number 2.88 4.0 
a half field angle (degree) -- 33.20 33.20 
Image height 33.63 33.63 
Whole length of the lens 153.42 178.54 
BF 55.96 81.07

Interestingly there was a second embodiment that Canon could have done for this lens, with a 1:1 Macro capability;

Infinite distance-1.1 time 
Focal distance 51.40 50.98 
F number 2.96 5.40 
a half field angle (degree) -- 33.20 33.20 
Image height 33.63 33.63 
Whole length of the lens 162.94 214.15 
BF 55.95 112.14 

It also shows that Canon may release a lens before it's actual patent has processed through the patent offices.

Japan Patent Application 2018-106141