Canon Patent: More RF Mount Lenses – 14mm f/1.8 & 20mm f/1.4

And yet another Canon patent application for RF mount lenses. This time we have a 14mm f/1.8 and a 20mm f/1.4.

Canon patent application 2021-184030 (Japan) discusses optical designs for a 14mm f/1.8 and a 20mm f/1.4 lens, both for full frame mirrorless cameras, i.e. for the EOS R lineup.

PROBLEM TO BE SOLVED: To provide a single focus lens which is advantageous in terms of wide angle, small size and high optical performance, for example.

An image pickup optical system used in a photographic camera and a movie camera is required to have a wide angle, a small F value, and an image pickup optical system having substantially uniform resolution from the center of the screen to the periphery of the screen over the entire object distance. ing. In order to realize such an imaging optical system, a first lens group fixed at the time of focusing is arranged on the most object side, and a plurality of negative lenses are continuously arranged from the most object side in the first lens group. A single focus lens (single focus optical system) has been proposed. Patent Document 1 describes a single focal length optical system having a focal length of 24 mm and an F value of 1.4, and Patent Document 2 describes a single focal length optical system having a focal length of 20 mm and an F value of 1.4.

Example 1

• Focal length 18.46
• F number 1.73
• Angle of view 49.53
• Image height 21.64
• Lens total length 144.17
• BF 39.17

Example 2

• Focal length 14.42
• F number 1.74
• Angle of view 56.31
• Image height 21.64
• Lens total length 151.49
• BF 37.99

Example 4

• Focal length 20.00
• F number 1.46
• Angle of view 47.25
• Image height 21.64
• Lens total length 146.11
• BF 38.99

Example 5

• Focal length 16.00
• F number 1.74
• Angle of view 53.52
• Image height 21.64
• Lens total length 127.35
• BF 35.73

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]