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Nikon 135mm F1.8 Lens patent

Nikon 135mm F2.8 Lens
Nikon filed a patent for 135mm F1.8 Lens, more details below

Self-interpretation and summary, Patent Document (translated by google)

  • Patent Publication No. 2010-48125
    • 2012.3.8 Release Date
    • 2010.8.30 filing date
  • Example 1
    • F = 132.9mm focal length
    • Fno = 1.8
    • 18.3deg angle.
    • Image height 21.6mm
    • Length 162.5mm lens
    • BF 42.2mm
    • 15 sheets of 9 group lens configuration
    • 2 ED glass sheet
  • Nikon’s patent
    • Group 3 consists of positive and negative positive
    • InnerĀ focus
      • The second group for focusing
    • Camera shake correction
      • For anti-vibration part of the third group
      • The fluctuation of aberration when anti-vibrationĀ hold

src – egami

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