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Nikon 100mm F2.5 Lens Patent

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Egami spotted a new Nikon lens patent filed in Japan. The new patent includes a new Nikon 100mm F2.5 medium format lens.

This patent shows that Nikon may also develop medium format cameras in the near future as rumored like Canon. Below are the patent details of the Nikon 100mm f/2.5 lens. (Translated by Google)


Nikon 100mm F2.5 Lens Patent

Lens Detail :

  • Patent Publication No. 2013-174794,2013-174794
    • Publication date 2013.9.5
    • Filing date 2012.2.27
  • Example 1
    • Focal length f = 100.00000mm
    • Fno. 2.46
    • Angle of view 2ω = 62.94 °
    • Image height Y = 60.00mm
    • BF 81.98720mm
    • Length 254.57217mm
    • Six 5-group lens configuration
    • Two 3 aspherical surface
  • Nikon patents
    • Negative negative negative positive positive
    • Rear focus

via: EG