Nikon patent for a 55-300mm f/2.8-4 full frame lens

Just a quick update on another Nikon patent filed in Japan for a 55-300mm f/2.8-4 full frame lens that just got published by Egami:

  • Patent number: 2012-212087
  • Patent release date: November 1, 2012
  • Patent filing date: March 31, 2011
  • Zoom ratio: 5.17
  • Focal length: 56.50 - 292.00mm
  • Aperture: 2.88 - 4.12
  • Angle of view: 8.35 - 23.13°
  • Image height: 21.60mm
  • Lens length: 248.90 - 288.60mm
  • Back focus: 38.47 - 62.51mm
  • Lens design: 22 elements in 17 groups with 5 ED elements
  • VR
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