Canon Patent: RF 130mm f/2 Mirrorless Lens

The latest Canon patent application 2022-043436 (Japan) discusses the optical formulas for a RF 100mm f/2 mirrorless lens for the EOS R system. Just take a look at the patent details below:


  • Japan Patent Application  2022-043436
  • [Public number] P2022043436
  • [Release date] 2022-03-16
  • INDUSTRIAL APPLICABILITY The title of the invention is an optical system and an image pickup apparatus having the same.
  • [Filing date] 2020-09-04
  • [Applicant]
    [Identification number] 000001007
    [Name or name] Canon Inc.
  • PROBLEM TO BE SOLVED: To provide an optical system which is compact and has various aberrations such as chromatic aberration satisfactorily corrected.

Example 1

  • Focal length: 130.77
  • F value: 2.06
  • Half angle of view: 9.39
  • Image height: 21.64
  • Overall length: 132.51
  • Back focus: 25.26

There have been patent applications for 135mm class single focus lenses for some time, but this time it seems that the lens configuration is relatively simple and the optical system is compact and lightweight. So, this lens is expected to be a substantial successor model with an RF mount for the EF 135mm F2L USM lens.

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Via: Asobinet