Canon patent application 2019-191607, spotted by Canon News, discusses optical formulas for a Canon RF 24-80mm f/4 lens for the Canon EOS R system.

• Focal length 24.72 48.09 82.45
• F number 4.12 4.12 4.12
• Half angle of view ( 41.19 24.22 14.70
• Image height 21.64 21.64 21.64
• Total lens length 119.50 134.52 149.55
• BF 13.50 18.71 22.73

The Canon patent also discusses the optical formula for an RF 24-130mm f/4 lens.

• Focal length 24.72 63.46 131.00
• F-number 4.12 4.12 4.12
• Half angle of view (degree) 41.19 18.83 9.38
• Image height 21.64 21.64 21.64
• Total lens length 137.50 168.92 200.33
• BF 13.50 24.03 28.27

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

• 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