Canon Patent: RF 9-18mm f/4 Wide Angle Zoom For EOS R System

Here is a new Canon patent application, and it is a rather interesting one.

Canon patent application P2022065383 (Japan) discusses optical formulas for a RF 9-18mm f/4 wide angle zoom lens for the Canon EOS R system.

PROBLEM TO BE SOLVED: To provide a zoom lens which is compact and has high resolving power while having a wide angle of view.

With the increase in the number of pixels of an image pickup apparatus, there is a demand for a zoom lens having a wide angle and high optical performance. Patent Document 1 discloses a wide-angle zoom lens having a focal length at a wide-angle end of about 11 mm in terms of 35 mm and an angle of view of about 120 °.

However, when the zoom lens is widened, the refractive power of each lens constituting the zoom lens increases and the resolution decreases.

The present invention provides a zoom lens having a wide angle of view, yet being compact and having high resolving power.

Example 1

• Focal length: 9.27-17.46
• F value: 4.12
• Half angle of view: 66.80-51.10
• Image height: 21.64
• Overall length: 130.07-127.77
• Back focus: 11.00

The Canon patent was spotted by Asobinet. 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