New Nikon lens Patents: 100-230mm F4.7, 18-55mm F3.5-5.6 II, 18-200mm F3.5-6.7

Nikon filed patent application 2012-141598(via egami) in Japan for three new lenses: 100-230mm F4.7, 18-55mm F3.5-5.6 II, 18-200mm F3.5-6.7.

patent: 100-230mm f/4.7

patent: 18-55mm f/3.5-5.6
patent: 18-200mm f/3.5-6.7
  • Example 1
    • 163.1 – – 226.6mm f = 95.0 focal length
    • Fno 4.68 -. 4.68 – 4.70
    • Length 259.3mm
    • FX format
    • 16 sheets 12 group lens configuration
    • 4 ED glass sheet
    • 4-group zoom negative positive positive and negative
    • Inner zoom
  • Example 2
    • 35.0 – – 53.5mm f = 18.5 focal length
    • Fno 3.6 -. 4.1 – 5.3
    • 122.3 – – 131.5mm 130.2 Length
    • DX format
    • Lens Construction 13 elements in 9 groups sheet
    • One aspherical surface a
    • 4-group zoom positive negative positive and negative
  • Example 3
    • 70.0 – – 188.0mm f = 18.7 focal length
    • Fno 3.64 -. 5.44 – 6.60
    • 180.3 – – 216.7mm 128.6 Length
    • DX format
    • Lens Construction 14 group 17 sheets
    • 2 2 aspherical surface
    • 5 ED glass sheet
    • Five-group zoom positive and negative positive positive and negative