Nikon Patents 105mm F/1.4 ED and FL Lenses

Nikon Patents 105mm F/1.4 ED and FL Lenses

A Nikon patent has been published which shows the designs for two Nikon 105mm f/1.4 Lenses, One ED and one FL. This patent is particularly interesting because only last week Nikon announced the Nikon AF-S Nikkor 105mm f/1.4E ED. The original filing date of this patent was the 23/1/2015 so it is extremely likely that we are looking at the original patent for that very lens. There are minor differences, visible in the following picture in the rear elements of the lens, but it gives you an idea of the turn around time for products from patenting to announcement, in this case over 18 months.

Nikon-AF-S-Nikkor-105mm-f1.4E-ED-lens-design

Check out the Patent details below:

  • Nikon 105mm patent
  • Patent Publication No. 2016-136211
  • Published 2016.7.28
  • Filing date 2015.1.23
  • Example 1
  • f = 104.998
  • FNO = 1.45
  • ω = 11.67
  • Y = 21.6
  • TL = 138.172
  • Bf = 39.040
  • Fluorite 2
  • 2-group configuration of positive-positive
  • Rear focus (the second group)

Via: Egami.

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