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Canon Patent 30mm F2.8 DO Fullframe Mirrorless Lens

Canon Fullframe lens patent

Canon DO optics are used in lenses to make it more light-weight and compact. Based on latest trend Canon also wants to keep its system light-weight and compact.

Description, self-interpretation of the patent literature

  • Patent Publication No. 2016-102851
    • Published 2016.6.2
    • Filing date 2014.11.27
  • Example
    • Zoom ratio 1.00
    • Focal length 31.35
    • F-number 2.86
    • Angle of view 34.61
    • Image height 21.64
    • Overall length of the lens 85.29
    • BF 29.99
  • Canon patent
    • Positive ShiboTadashi
    • Diffractive optical element (the second group of aperture stop image side)
    • Correct axial chromatic aberration and lateral chromatic aberration of the near-infrared light
  • [0001]The present invention relates to a magnification chromatic aberration correction of the imaging optical system used in a near infrared region from the visible region is suitable especially monitoring optical system.

Also see – First Canon 5D Mark IV Image Leaked ?

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