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

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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:

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

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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

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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: Macro Lens With Variable Soft Focus For FF Mirrorless Cameras

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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.

Canon Patent For A Stereo Lens For Full Frame Mirrorless Cameras (EOS R?)

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What are Canon’s labs working on? We are surprised by a Canon patent application for a stereo lens for mirrorless cameras with a full frame sensor.

Canon patent application P2021-51282A (Japan) discusses optical formulas for a stereo lens for full frame mirrorless cameras. Does Canon have a full frame stereo camera in the works? 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.

Drawing from the patent literature

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

Canon Patent: Optical Designs For Wide-Angle Primes For The EOS R System (12mm, 14mm, 20mm)

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No doubt Canon is actively working to expand the RF mount lens ecosystem. Here is another Canon patent application for RF lenses.

Canon patent application P2021-47384A discusses optical formulas for three wide-angle prime lenses: 12mm, 14mm and 20mm, all f/2.8. The patent was spotted by Hi Lows Note.

Embodiment 1 – 12mm

  • Focal length: 12.35 mm
  • F number: 2.88
  • Half angle of view: 60.28
  • Image height: 21.64 mm
  • Lens length: 80.22 mm
  • BF 16.54 mm

Embodiment 2 – 14mm

  • Focal length: 14.42 mm
  • F number: 2.88
  • Half angle of view: 56.32
  • Image height: 21.64 mm
  • Lens length: 91.61 mm
  • BF 17.29 mm

Embodiment 3 – 20mm

  • Focal length: 19.48 mm
  • F number: 2.88
  • Half angle of view: 48.02
  • Image height: 21.65 mm
  • Lens length: 90.74 mm
  • BF 19.35 mm

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