Canon Patent for RF 17-34mm f/4-5.6 Lens for EOS R Systems

Canon Patent

Hi Lows Note spotted a Canon patent application (Japan, 2019-074633) describing the optical formula for a 17-34mm f/4-5.6 lens for the Canon EOS R mirrorless system.

  • Zoom ratio: 1.94
  • Focal length: 17.50 – 27.00 – 33.95 mm
  • F number: 3.94 – 3.92 – 5.69
  • Angle of view: 51.03 – 38.71 – 32.51
  • Image height: 21.64 mm
  • Lens length: 122.00 – 119.11 – 121.87 mm
  • Back focus: 20.00 – 31.62 – 40.07 mm

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

Latest Canon Patent Applications (fast EF lenses, RF lenses, wide angle zooms)

Canon Patent

Here is a list of Canon patent applications.

Canon patent application in Japan 2019-066586 describes optical formulas for various fast prime lenses for the EOS M system.

  • 20mm 1.4
  • 14mm 1.8
  • 22mm 1.2
  • 24mm 1.2

Focal distance 20.50 20.45 20.26 
F number 1.45 1.45 1.45 
Half field angle 46.54 46.54 46.54 
Image height 21.64 21.64 21.64 
Whole length of the lens 100.04 99.55 97.71 
BF 38.32 38.81 40.65 

Focal distance 18.52 18.46 18.25 
F number 1.31 1.31 1.31 
Half field angle 49.44 49.53 49.85 
Image height 21.64 21.64 21.64 
Whole length of the lens 106.98 106.51 104.95 
BF 38.97 39.44 41.00 

Focal distance 14.69 14.68 14.64 
F number 1.85 1.85 1.85 
Half field angle 55.82 55.85 55.91 
Image height 21.64 21.64 21.64 
Whole length of the lens 104.15 103.78 102.95 
BF 38.33 38.70 39.53 

Focal distance 22.69 22.60 22.20 
F number 1.24 1.24 1.25 
Half field angle 43.63 43.75 44.27 
Image height 21.64 21.64 21.64 
Whole length of the lens 107.46 106.9 104.5 
BF 38.32 38.88 41.28 

Focal distance 24.10 24.03 23.69 
F number 1.24 1.24 1.24 
Half field angle 41.92 42.00 42.40 
Image height 21.64 21.64 21.64 
Whole length of the lens 108.28 107.72 104.96 
BF 38.33 38.89 41.65 


Canon patent application in Japan 2019-066585 describes more optical formulas for fast primes lenses for the EOS M system.

  • 20mm 1.4
  • 16mm 1.4
  • 14mm 1.8
  • 17mm 1.8
  • 16mm 1.8
  • 18mm 1.8

Focal distance 20.50 20.45 20.26 
F number 1.45 1.45 1.45 
Half field angle 46.54 46.54 46.54 
Image height 21.64 21.64 21.64 
Whole length of the lens 100.04 99.55 97.71 
BF 38.32 38.81 40.64 

Focal distance 16.40 16.36 16.21 
F number 1.45 1.45 1.45 
Half field angle 52.84 52.84 52.84 
Image height 21.64 21.64 21.64 
Whole length of the lens 98.97 98.65 97.42 
BF 38.50 38.83 40.05 

Focal distance 14.40 14.38 14.29 
F number 1.83 1.83 1.83 
Half field angle 56.35 56.35 56.35 
Image height 21.64 21.64 21.64 
Whole length of the lens 88.57 88.32 87.42 
BF 38.79 39.04 39.94 

Focal distance 17.16 17.14 17.06 
F number 1.83 1.83 1.83 
Half field angle 51.58 51.58 51.58 
Image height 21.64 21.64 21.64 
Whole length of the lens 90.00 89.66 88.39 
BF 40.51 40.86 42.12 

Focal distance 16.04 16.00 15.86 
F number 1.83 1.83 1.83 
Half field angle 53.45 53.45 53.45 
Image height 21.64 21.64 21.64 
Whole length of the lens 94.99 94.67 93.46 
BF 38.80 39.13 40.33 

Focal distance 18.81 18.75 18.52 
F number 1.83 1.83 1.83 
Half field angle 48.99 48.99 48.99 
Image height 21.64 21.64 21.64 
Whole length of the lens 93.37 93.37 93.37 
BF 39.52 39.52 39.52


Canon patent application in Japan 2019-066653 describes optical formulas for 14-40mm f/4 and 16-40mm f/4 lenses for the EOS R system.

Focal distance 14.43 21.62 40.74 
F number 4.12 4.12 4.12 
Half field angle 56.30 45.01 27.97 
Image height 21.64 21.64 21.64 
Whole length of the lens 138.31 128.15 129.29 
BF 12.84 12.84 12.84

Focal distance 16.41 23.12 38.80 
F number 4.12 4.12 4.12 
Half field angle 52.82 43.10 29.14 
Image height 21.64 21.64 21.64 
Whole length of the lens 118.88 112.53 114.89 
BF 12.78 12.78 12.78 


Canon patent application in Japan 2019-066654 describes optical formulas for 15-35mm f/4 and 16-35mm F/4 lenses for the EOS R system.

Focal distance 15.45 24.00 34.00 
F number 4.12 4.12 4.12 
Half field angle 54.47 42.03 32.47 
Image height 21.64 21.64 21.64 
Whole length of the lens 125.38 119.21 116.89 
BF 12.00 19.66 24.40 

Focal distance 16.48 24.00 34.00 
F number 4.12 4.12 4.12 
Half field angle 52.70 42.03 32.47 
Image height 21.64 21.64 21.64 
Whole length of the lens 127.27 116.39 111.30 
BF 10.95 16.82 23.58 


And finally, Canon patent application in Japan 2019-066701 describes optical formulas for two more RF lenses:

Canon RF 15-35mm f/2.8L

Focal distance 15.30 24.20 34.00 
F number 2.91 2.91 2.91 
Field angle 54.73 41.80 32.47 
Image height 21.64 21.64 21.64 
Whole length of the lens 135.05 125.84 125.33 
BF 13.00 22.20 32.26 
 

Canon RF 17-70mm f/3.5-5.6

Focal distance 17.30 35.00 68.00 
F number 3.58 4.18 5.85 
Field angle 51.35 31.72 17.65 
Image height 21.64 21.64 21.64 
Whole length of the lens 142.70 138.53 143.42 
BF 13.32 29.60 57.62 

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

Source: Canon News

Canon Might Have a 50mm f/1.8 and a 28mm f/1.8 For The EOS R System On Their Agenda, Patent Suggests

50mm F/1.8

Canon patent application 2019-0113711 (USA) describes the optical formula for an RF 50mm f/1.8 and RF 28mm f/1.8 lens, both for the Canon EOS R full frame mirrorless system.

Focal length 48.50
F-number 1.85
Half angle of view (degrees) 24.04
Image height 21.64
Total lens length 95.00 
BF 15.80

Focal length 28.80
F-number 1.85
Half angle of view (degrees) 36.91
Image height 21.64
Total lens length 80.30 
BF 7.00 

It’s likely Canon will launch these non-L lenses sooner than later. Both are popular focal lengths on full frame, and it’s also likely Canon is set to offer some less expensive (aka budget) lenses for the EOS R system.

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production in the next few years are these:

Source: Canon News

Future Canon Cameras Might Have Pop-Up Flash With LED, Patent Suggests

Canon Patent

Interesting Canon patent application (2019-056787, Japan). The patent describes a pop-up flash with LEDs. This is interesting for videographers or anyone needing a continuous light source for their work.

From the patent literature:

[…] when using LED which carries out a continuous light as a light source of a lighting system, the measure against the heat which occurs from LED serves as problem. If the measure against heat is not performed sufficiently, LED deteriorates for a short time and there is a possibility that it may become impossible for light volume to be deteriorated or to switch on the light. If it is a lighting system removable to a camera like a Patent document 2, in order to radiate heat in the heat which occurs from LED, it is possible to provide a radiation substrate with a large area, but in the type which has a pop-up function, it is difficult to provide a radiation substrate with a large area near the LED. 

Then, in a lighting system movable to the stowed position and usage position which used LED as the light source, an object of the present invention is to enable it to radiate heat in the heat which suppresses enlargement and occurs from LED. 

[Means for solving problem] 
 
To achieve the above objects, the lighting system concerning the present invention, The radiation substrate which has a light-emitting part which uses LED as a light source, and a housing, is a lighting system with the aforementioned light-emitting part movable to the stowed position stored by the aforementioned housing and the usage position projected from the aforementioned housing, and carries out surface mounting of the aforementioned LED, It has a projection surface which ejects the light from the aforementioned LED, and a reflective surface which turns the light from the aforementioned LED to the aforementioned projection surface, and it reflects, and the aforementioned radiation substrate is arranged in the surface which is not parallel to the aforementioned projection surface. 

This patent might indeed go into production sooner than later.

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production in the next few years are these:

Source: Canon News

Canon Patent For 85mm f/1.2, 100mm f/1.4, 24-70mm f/2.8, and 28-85mm f/2-2.8 Lenses for Mirrorless

Canon Patent

Another Canon patent application spotted by Hi Lows Note.

Patent application 2019-49646A and 2019-49645A describes optical formulas for 85mm f/1.2, 100mm f/1.4, 24-70mm f/2.8, and 28-85mm f/2-2.8 lenses for mirrorless cameras.

Focal length: 86.5 mm
F number: 1.24
Image height: 21.64 mm
Lens length: 135.0 mm
Back focus: 13.5 mm

Focal length: 100.0 mm
F number: 1.46
Image height: 21.64 mm
Lens length: 142.0 mm
Back focus: 14.1 mm

Zoom ratio: 2.75
Focal length: 24.71 – 45.00 – 67.90 mm
F number: 2.88
Half angle of view: 41.21- 25.68 – 17.67
Image height: 21.64 mm
Lens length: 143.89 – 161.78 – 179.68 mm
Back focus: 13.42 – 27.34 – 38.58 mm

Zoom ratio: 3.04
Focal length: 28.00 – 53.77 – 85.00 mm
F number: 2.00 – 2.60 – 2.88
Half angle of view: 37.69 – 21.92 – 14.28
Image height: 21.64 mm
Lens length: 158.50 – 176.83 – 195.16 mm
Back focus: 16.00 – 28.52 – 41.05 mm

Canon Patent For Stacked Sensor Technology

Canon Patent

Canon patent application US20190096931 describes a stacked sensor. If you want to lear more about how a stacked sensor works, this article might help.

From the patent literature:

In CCD type and amplification-type solid-state image pickup devices used for digital still cameras, camcorders, and the like, in order to obtain high definition images, the sizes of pixels are required to be reduced. However, as the sizes of pixels are reduced more and more, a light receiving area of a photoelectric converter, in a pixel, detecting light is decreased, and the sensitivity is decreased. 

Source: Canon News