Canon Patent: Full Frame Lenses With Front And Rear Apodised Optical Elements

Canon Patent

A new Canon patent application for lenses with apodised optical elements on the front and back of the lens barrel. While not 100% sure I guess these are also lenses for the RF mount.

Canon patent application 20210124182 (USA) discusses optical formulas for full frame lenses with apodised elements on the fron and back of the lens. The lenses found in the patent literature:

  • 135mm f/2
  • 130mm f/4
  • 70mm f/1.2
  • 24mm f/1.4

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

Source: NL

Canon Patent: 35mm f/1.4 And 28mm f/1.4 For The EOS R System

Canon Patent

Here is one more Canon patent for RF mount lenses, another one in an already long list: 35mm f/1.4 and 28mm f/1.4 lenses for full frame mirrorless cameras, i.e. the EOS R.

Canon patent application 2021-063966 (Japan) discusses optical formulas for a 35mm f/1.4 lens and a 28mm f/1.4 lens, both for the RF mount. The patent application was spotted by Canon News.

28mm f/1.4:

Focus distance      28.00
F number             1.42
Half angle (degree) 37.69
Image height        21.64
Lens total length  140.62
BF                  21.99

35mm f/1.4:

Focus distance      34.98
F number             1.42
Half angle (degree) 31.73
Image height        21.64
Lens total length  154.45
BF                  16.17

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

Canon Patent: 35mm f/1.2 Lens For Full Frame Mirrorless Cameras

Canon Patent

And yet another Canon patent, as usual spotted by Hi Lows Note. A 35mm f/1.2 lens for the EOS R system.

Canon patent 2021-60475A (Japan) discusses various optical designs for a 35mm f/1.2 lens for the RF mount. This is definitely a lens we are going to see in the RF lens lineup. A 35mm f/1.2 for sure is going to be released.

Embodiment 1

  • Focal length: 34.00 mm
  • F number: 1.23
  • Half angle of view: 32.47
  • Image height: 21.64 mm
  • Lens length: 147.45 mm
  • Back focus: 19.82 mm

Embodiment 2

  • Focal length: 35.76 mm
  • F number: 1.23
  • Half angle of view: 31.17
  • Image height: 21.64 mm
  • Lens length: 147.45 mm
  • Back focus: 19.50 mm

Embodiment 3

  • Focal length: 34.00 mm
  • F number: 1.23
  • Half angle of view: 32.47
  • Image height: 21.64 mm
  • Lens length: 147.45 mm
  • Back focus: 20.95 mm

Embodiment 4

  • Focal length: 34.00 mm
  • F number: 1.23
  • Half angle of view: 32.47
  • Image height: 21.64 mm
  • Lens length: 149.45 mm
  • Back focus: 16.49 mm

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

Canon Patent: In Body Image Stabilization For EOS M Or PowerShot Camera

Canon Patent

After all those Canon patents referring to RF mount lenses, here is a different one: IBIS on a small camera body.

Canon patent application US20210105391 (USA) discusses In Body Image Stabilization (IBIS) for a small camera body. According to the drawings in the patent literature it’s either an EOS M camera or a PowerShot camera. IBIS coming to the EOS M system is already rumored. This patent seems to consolidate it.

Drawing seems to show an EOS M camera

This one looks more like a PowerShot camera

More Canon patents are listed here.

Source: NL

Canon Patent: Various Telephoto Zoom Lenses For The RF Mount

Telephoto Zoom

And here is another Canon patent application for telephoto zoom RF mount lenses. No doubt left that Canon is heavily investing in the EOS R full frame mirrorless system.

Canon patent application P2021-56407A (Japan) discusses optical formulas and designs for a bunch of telephoto zoom lenses for the RF mount. However, one of the optical designs listed below is for an APS-C sensor, so either for the EOS M (likely) or for Canon’s crop sensor DSLR lineup. The patent application was spotted by Hi Lows Note.

Embodiment 1

  • Zoom ratio 2.68
  • Focal length 72.27 135.02 193.89 mm
  • F number 4.08 4.08 4.12
  • Half angle of view(°) 16.67 9.10 6.37
  • Image height 21.64 21.64 21.64 mm
  • Lens length 137.50 175.84 193.12 mm
  • BF 14.44 24.23 29.66 mm

Embodiment 2

  • Zoom ratio 4.82
  • Focal length 101.59 200.00 490.00 mm
  • F number 4.60 5.09 6.80
  • Half angle of view(°) 12.02 6.17 2.53
  • Image height 21.64 21.64 21.64 mm
  • Lens length 222.29 279.43 312.29 mm
  • BF 21.06 29.20 64.12 mm

Embodiment 3

  • Zoom ratio 2.69
  • Focal length 72.13 100.00 194.06 mm
  • F number 2.89 2.89 2.91
  • Half angle of view(°) 16.70 12.21 6.36
  • Image height 21.64 21.64 21.64 mm
  • Lens length 161.59 187.06 220.03 mm
  • BF 15.86 20.68 31.81 mm

Embodiment 4 (for APS-C sensor)

  • Zoom ratio 4.24
  • Focal length 56.90 130.00 241.30 mm
  • F number 4.68 5.88 6.55
  • Half angle of view(°) 13.50 6.00 3.24
  • Image height 13.66 13.66 13.66 mm
  • Lens length 102.01 140.24 153.08 mm
  • BF 13.47 21.19 39.32 mm

Embodiment 5

  • Zoom ratio 3.75
  • Focal length 103.39 196.91 387.69 mm
  • F number 5.77 7.10 8.24
  • Half angle of view(°) 11.82 6.27 3.19
  • Image height 21.64 21.64 21.64 mm
  • Lens length 165.42 201.96 235.42 mm
  • BF 13.85 33.27 57.50 mm

Embodiment 6

  • Zoom ratio 3.88
  • Focal length 100.04 198.04 387.80 mm
  • F number 5.77 7.10 8.24
  • Half angle of view(°) 12.20 6.23 3.19
  • Image height 21.64 21.64 21.64 mm
  • Lens length 159.40 202.97 229.40 mm
  • BF 10.02 28.12 62.23 mm

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

Canon Patent: Macro Lens With Variable Soft Focus For FF Mirrorless Cameras

Soft Focus

And yet another Canon patent for RF mount lenses: a macro lens with variable soft focus.

Canon patent application P2021-47297A (Japan) discusses optical designs for a macro lens with soft focus for a full frame mirrorless camera, hence we guess for the EOS R system. The patent was spotted by the guys who spot most of the Canon patents you hear of: Hi Lows Note.

Embodiment 1

  • Magnification: -1.00E-06 -0.5 -1.4
  • Focal length: 100.81 65.87 36.01 mm
  • F number: 2.92 4.49 6.64
  • Image height: 21.64 21.64 21.64 mm
  • Lens length: 162.37 162.37 162.37 mm
  • BF: 14.66 14.66 14.66 mm

Embodiment 2

  • Magnification: -1.00E-06 -0.5 -1.4
  • Focal length: 103.01 67.67 37.04 mm
  • F number: 3.04 2.6 1.45
  • Image height: 21.64 21.64 21.64 mm
  • Lens length: 141.34 141.34 141.34 mm
  • BF: 14.70 14.70 14.70 mm

Embodiment 3

  • Magnification: -1.00E-06 -0.5 -1.4
  • Focal length: 103.02 67.96 37.17 mm
  • F number: 2.92 4.49 6.64
  • Image height: 21.64 21.64 21.64 mm
  • Lens length: 138.89 138.89 138.89 mm
  • BF: 14.70 14.70 14.70 mm

More Canon patents are listed here.