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

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:

• A bunch of prime lenses for the RF mount
• An improved Electronic Viewfinder
• Patent application for RF 50mm F1.4 and an RF 35mm f/1.4 lenses
• A zoom lens that might be for an EOS R with APS-C sensor
• A smaller IBIS unit.
• A cooling adapter for the RF mount (R5 overheating?)
• A bunch of macro lenses for the RF mount.
• A 8mm f/4 circular fisheye lens for the Canon EOS R system
• A battery grip that works with differently siszed cameras
• A 100-400mm f/5.5-7.1 lens for APS-C cameras. EOS M or DSLR?
• RF 17-70mm lens for EOS R system
• IBIS coming to the EOS M and PowerShot lineup?
• Patent Application: mirrorless camera with large display and virtual control wheel
• Patent Application: IBIS and Lens IS Working Together
• Patent application for high speed mirror movement and control
• Patent application for an RF 14-28mm f/2 lens
• Patent application for an RF 50mm f/1.8 lens
• Patent application for a smart lens cap
• Patent application for celestial auto-focus
• Patent application describing a Pop-Up Flash With LED
• Patent application describing the optical formula for a RF 70-300mm F/4-5.6 IS lens for EOS R systems
• Patent application describing how to improve burst rate by compressing raw files
• Patent application describing a new way to review photos from a sequential shot
• Patent application that describes technology to improve wireless communication while reducing power consumption
• Patent application to spot and reduce moire artefacts in image data
• Patent application for weather sealed lens adapter
• Patent application for AI powered predictive camera control system
• Patent application for 18-55mm kit lens with LCD display
• Patent application to reduce noise in image files