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Canon Patent News: Six New Prime Lenses

List canon patent prime lenses published by egami, details and image are listed below,

List of patent canon lenses

  • Canon 85mm F1.2 IS
  • 85mm F1.8
  • 100mm F2.0
  • 135mm F2.0
  • 200mm F2.0
  • 50mm F1.4

Patent literature, self-interpretation and summary (translated by google)

  • Patent Publication No. 2011-253050
    • Published 2011.12.15
    • Filing date 2010.6.2
  • Example
    Example
    Example Focal length Fno Length Lens BF Lens Construction
    One 85.00 1.24 126.06 39.13 Nine elements in 7 groups
    Two 85.00 1.80 113.00 42.34 Nine elements in 7 groups
    Three 100.00 2.00 120.00 42.27 Nine elements in 7 groups
    Four 133.30 2.06 158.90 51.86 10 sheets in 7 groups
    Five 196.00 2.05 223.50 50.00 15 pieces in 10 groups
    Six 51.70 1.41 89.92 39.00 Eight elements in 7 groups

    Both the image height is 21.64mm (full size)

Canon prime lenses patent

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