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Canon Patent Application: Canon RF lenses
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Canon Patent Application: Canon RF lenses

In this patent application, we see what appears to be the Canon RF 35mm 1.8 Macro, however we see other embodiments that are certainly interesting from the Canon RF point of view, including a 16-35mm F4.0.  The back focus distance is a bit deep for the 16-35, so we are a little doubtful that this would actually be the actual lens when it is created.

Focal length 20.50
Fno 2.06
Half Angle of View (Degrees) 46.54
Image height 21.64
Overall lens length 90.13 
BF 13.50

Focal length 44.70
Fno 2.85
Half angle of view (degrees) 25.83
Image height 21.64
Overall lens length 62.63 
BF 13.13

Focal length 16.48 24.02 33.75
Fno 4.12 4.12 4.12
Half angle of view (degrees) 52.70 42.01 32.66
Image height 21.64 21.64 21.64
Overall lens length 117.64 109.16 110.13 
BF 11.50

US Patent Application 20190265450

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How to view Japan Patent applications.

Unfortunately, there's no direct way of linking to the patent application (sad!) however, this is the easiest process to view a japan patent or application.

  1. Go to the Japan Patent Office search page.
  2. If it's a patent application (they are usually in the format of Year-Number ie: 2017-011300) then type the patent application number into the second field down from the top where it says publication of patent application. 
  3. Click on search.
  4. Then click on the patent application number link, and there's the patent application!

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