Canon Patent For RF 8mm f/4 Circular Fisheye Lens For EOS R System

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So many Canon patents for RF mount lenses. Here is another one, and it’s for a circular fisheye lens.

Canon patent application 2020-56995 (Japan) discusses the optical formula for an RF 8mm f/1.4 circular fisheye lens for the Canon EOS R full frame mirrorless camera system.

  • Focal length: 8.10 mm
  • F number: 4.00
  • Half angle of view: 90.84
  • Image height: 11.50 mm
  • Lens length: 66.13 mm
  • Back focus: 13.21 mm

This might be a patent that gets into production sooner or later. More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

The Canon EOS R System Might Be Used To Produce VR Footage, Patent Suggests

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Is Canon planning some VR (Virtual Reality) production system based on the Canon EOS R camera system? A patent application appears to suggest exactly this.

Canon patent application 2020-42197A (Japan) discusses optical formulas for a dual view anamorphic optic for 35mm full-frame mirrorless cameras (i.e. the Canon EOS R system).

  • Focal length: vertical 7.44 mm, horizontal 5,57 mm
  • F number: 4.00, 2.81
  • Half angle of view: 90, 90
  • Image height: 11,75 mm, 8.75 mm
  • Lens length: 100.00 mm
  • Back focus: 15.92 mm

Intriguing, isn’t it? What plans does Canon have with the EOS R system and the RF mount? At least it has become very clear that Canon is very committed to their new full frame mirrorless system.

canon eos r
Image from the patent literature

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

[via Hi Lows Note]

Canon Patent: RF 85mm f/1.2 (without BR elements) And RF 50mm f/1.2

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Here is a newly spotted Canon patent.

Canon patent application P2020-38295A describes the optical formulas for two RF lenses, a 85mm f/1.2 without the Blue Spectrum Refractive (BR) elements, and a 50mm f1.2.

RF 85mm f/1.2 lens

  • Focal length: 83.20 mm
  • F number: 1.24
  • Half angle of view: 14.58
  • Image height: 21.64 mm
  • Lens length: 121.31 mm
  • Back focus: 14.08 mm

RF 50mm f/1.2 lens:

  • Focal length: 51.10 mm
  • F number: 1.25
  • Half angle of view: 22.95
  • Image height: 21.64 mm
  • Lens length: 111.01 mm
  • Back focus: 14.60 mm

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

[via Hi Lows Note]

Canon Patent: RF 24-150mm f/4 Lens For EOS R System

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Here is a new Canon patent application, spotted by Hi Lows Note.

Canon patent application P2020-34631A discusses optical formulas for an RF 24-150mm lens for the Canon EOS R full frame mirrorless system.

  • Focal length: 24.70 58.34 145.80 mm
  • F number: 4.12 4.12 4.12
  • Half angle of view: 38.43 20.35 8.44
  • Lens length: 116.35 134.13 162.90 mm
  • Back focus: 18.26 15.54 24.00 mm

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

Canon Patent: Battery Grip That Works With Different Cameras

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Well that’s an interesting Canon patent application. One that might get into production.

Canon patent application 20200073213 (USA) describes a battery grip with adapter that fits various cameras.

From the abstract:

An accessory attachable to an image pickup apparatus through an adapter includes a body portion configured to contact the adapter, a screw engageable with a screw hole in the image pickup apparatus through a through-hole formed in the adapter, an operation unit configured to move the screw relative to the body portion. The screw is movable in a plurality of directions including a direction along an optical axis of the image pickup apparatus and a direction orthogonal to the optical axis in accordance with an operation of the operation unit by a user.

From the patent literature:

SUMMARY OF THE INVENTION

[0004] The present invention provides an accessory and camera system, each of which is generally attachable to a plurality of types of camera bodies.

[0005] An accessory according to one aspect of the present invention attachable to an image pickup apparatus through an adapter includes a body portion configured to contact the adapter, a screw engageable with a screw hole in the image pickup apparatus through a through-hole formed in the adapter, an operation unit configured to move the screw relative to the body portion. The screw is movable in a plurality of directions including a direction along an optical axis of the image pickup apparatus and a direction orthogonal to the optical axis in accordance with an operation of the operation unit by a user. A camera system including an image pickup apparatus, and the above accessory also constitutes another aspect of the present invention.

[0006] An accessory according to another aspect of the present invention attachable between a battery grip and an image pickup apparatus includes a body portion configured to contact the image pickup apparatus, and a first positioning member configured to position relative to the image pickup apparatus. The body portion has a through-hole into which a screw of a battery grip is inserted in order to fix the battery grip to the image pickup apparatus.

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

Canon Patent: 13-21mm f/2.8 Lens For EOS R Camera System

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Here is another Canon patent application dealing with a lens for the Canon EOS R full frame mirrorless system.

Canon patent application P2020-30251A (Japan) discusses optical formulas for a 13-21mm f/2.8 lens for a full frame mirrorless camera system, i.e. for the EOS R system.

  • Zoom ratio: 1.58
  • Focal length: 13.40 17.30 21.20 mm  
  • F number: 2.88 2.88 2.88
  • Half angle of view: 58.23 51.35 45.58  
  • Image height: 21.64 21.64 21.64 mm  
  • Lens length: 150.15 136.89 130.04 mm
  • Back focus: 20.96 25.13 29.31 mm

This might well be a lens that goes into production, sooner or later.

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

[via Hi Lows Note]