Canon Patent For CN-E 20-100mm f/2.8 and 20-130mm f/2.8-3.5 Cine Lenses

Canon filed a new patent in Japan. The new patent describes a new CN-E 20-100mm f/2.8 and 20-130mm f/2.8-3.5 lenses for Cinema products.

Both Canon lenses are standart zoom models features maximum F2.8 aperture. The patent for the 20-130mm seems to share the same optical formula which has an aperture between f/2.8-3.5.

We can expect these new cinema lenses for this fall as the EOS C300 Mark II will start shipping.

Canon CN-E 20-100mm f/2.8 and 20-130mm f/2.8-3.5 Cine Lenses Patent

canon-patent-for-cn-e-20-100mm-f2-8-and-20-130mm-f2-8-3-5-cine-lenses

  • Patent Publication No. 2015-18083
    • Published 2015.1.29
    • Filing date 2013.7.10
  • Example 1
    • Zoom ratio 6.00
    • Focal length 21.00 87.93 125.94
    • F number 2.77 2.77 3.66
    • Half angle of 35.54 9.68 6.79
    • Image height 15.00
    • Overall length of the lens 314.76
    • BF 50.03
  • Example 2
    • Zoom ratio 5.00
    • Focal length 20.00 69.46 100.00
    • F number 2.76 2.77 2.77
    • Half angle of 36.50 12.03 8.42
    • Image height 14.80
    • Overall length of the lens 294.44
    • BF 50.07
  • Canon patents
    • Positive and negative positive and negative positive five-group zoom
    • Inner focus (part of the first group)
    • Inner zoom

via Egami