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Canon Patent Application: A Canon RF superzoom
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Canon Patent Application: A Canon RF superzoom

This is a curious lens patent, while it certainly appears to be an RF lens, it's an RF lens that requires in-camera RAW manipulation at the wide end because the image circle is not big enough.  It could also be these are for more consumer CINI lenses where super-35 is "big enough", as the patent application also indicates an image that appears like a video camera.  However, 21.61 is much larger than the aytpical CINI lens as well.

Here are the embodiments;

Focal Length   25.20   125.05    294.41
F-Number        3.50     4.97       5.6
Image Height   18.80    21.61     21.61
BF             21.75    21.75     21.75

Focal Length   29.22   203.97    350.06
F-Number        2.8      4.36      4.50 
Image Height   18.36    21.61     21.61
BF             22.42    22.42     22.42

Also, there's an EF lens included in this patent application;

Focal Length   35.13   160.38    386.45
F-Number        4.50     5.27      5.60
Image Height   20.53    21.61     21.61
BF             54.68    54.68     54.68


US Patent Application 20180292627

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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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