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Canon Patent: 24-100mm f/2.8 And 24-70mm f/2-3.5

Canon Patent
Drawing from the patent literature

Here is a new Canon patent application, for a 24-100mm f/2.8 and a 24-70mm f/2-3.5 lens. The design seems to be agnostic, meaning no mount type is specified.

Canon patent application 2021-189218 (Japan) discusses optical formulas for two lenses: 24-100mm f/2.8 and a 24-70mm f/2-3.5.

Example 1

  • Zoom ratio 3.92
  • Wide-angle intermediate telephoto
  • Focal length 24.72 48.69 97.00
  • F number 2.90 2.90 2.90
  • Half angle of view 37.60 23.96 12.57
  • Lens total length 119.56 132.86 152.43
  • BF 5.30 10.90 19.16

Example 2

  • Zoom ratio 2.75
  • Wide-angle intermediate telephoto
  • Focal length 24.72 40.75 67.96
  • F number 2.06 3.50 3.50
  • Half angle of view 37.60 27.97 17.66
  • Lens total length 105.84 115.84 131.74
  • BF 13.77 21.03 28.47

Example 3

  • Zoom ratio 2.75
  • Wide-angle intermediate telephoto
  • Focal length 24.72 40.96 67.96
  • F number 2.90 2.90 2.90
  • Half angle of view 37.60 27.84 17.66
  • Lens total length 93.83 105.51 121.76
  • BF 3.29 10.64 20.42

Example 4

  • Zoom ratio 3.92
  • Wide-angle intermediate telephoto
  • Focal length 24.72 48.16 97.00
  • F number 2.90 3.50 3.50
  • Half angle of view 37.60 24.19 12.57
  • Image height 19.04 21.64 21.64
  • Lens total length 98.44 114.37 139.82
  • BF 3.88 12.29 24.26

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

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