Here is a new Canon patent application, for a 24-100mm f/2.8 and a 24-70mm f/2-3.5 lens. The design seems to be agnostic, meaning no mount type is specified.

Canon patent application 2021-189218 (Japan) discusses optical formulas for two lenses: 24-100mm f/2.8 and a 24-70mm f/2-3.5.

Example 1

• Zoom ratio 3.92
• Wide-angle intermediate telephoto
• Focal length 24.72 48.69 97.00
• F number 2.90 2.90 2.90
• Half angle of view 37.60 23.96 12.57
• Lens total length 119.56 132.86 152.43
• BF 5.30 10.90 19.16

Example 2

• Zoom ratio 2.75
• Wide-angle intermediate telephoto
• Focal length 24.72 40.75 67.96
• F number 2.06 3.50 3.50
• Half angle of view 37.60 27.97 17.66
• Lens total length 105.84 115.84 131.74
• BF 13.77 21.03 28.47

Example 3

• Zoom ratio 2.75
• Wide-angle intermediate telephoto
• Focal length 24.72 40.96 67.96
• F number 2.90 2.90 2.90
• Half angle of view 37.60 27.84 17.66
• Lens total length 93.83 105.51 121.76
• BF 3.29 10.64 20.42

Example 4

• Zoom ratio 3.92
• Wide-angle intermediate telephoto
• Focal length 24.72 48.16 97.00
• F number 2.90 3.50 3.50
• Half angle of view 37.60 24.19 12.57
• Image height 19.04 21.64 21.64
• Lens total length 98.44 114.37 139.82
• BF 3.88 12.29 24.26

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

• Automatic shutter silencing based on subject and distance
• 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

[via asobinet.com]