Nikon Patent for 9-30mm f/1.8-2.8 Mirrorless Lens

Nikon has filed a new patent in Japan for a standard zoom lens for CX-mount mirrorless cameras.

The new patent describes Nikon 9-30mm f/1.8-2.8 lens designed for mirrorless cameras with 1-inch-type sensors. The mirrorless lens offers a 35mm focal length equivalent of approximately 24.5-81.5mm.

If it becomes available on the market, the Nikon 9-30mm f/1.8-2.8 lens would be a great choice for low-light photography. But the lens will probably more expensive than the f/3.5-5.6 model because of a better aperture range of f/1.8-2.8.

Nikon 9-30mm f/1.8-2.8 lens patented for mirrorless cameras


Explanation self interpretation of patent literature

  • Patent Publication No. 2015-11191
    • Published 2015.1.19
    • Filing date 2013.6.28
  • Example 1
    • Zoom ratio 3.14
    • The focal length f = 9.3-19.1-29.1mm
    • Fno. = 1.8-2.5-2.9
    • Angle of view 2ω = 85.1-44.7-29.8 °
    • Image height Y = 8.0mm
    • Total length 95.9-101.1-114.1mm
    • BF 13.8- 18.9- 18.4mm
    • 4-group zoom of positive and negative, positive
    • Inner focus

via Egami