Canon New Patents: EF 85mm f/1.8 IS, 100mm f/2 IS, 135mm f/2.8 IS

EF 85mm f 1.8 IS
EF 85mm f/1.8 IS

Canon filed several new prime lens patent in Japan with image stabilizer feature. These are EF 85mm f/1.8 IS, EF 100mm f/2 IS, EF 135mm f/2.8 IS.

EF 100mm f/2 IS
EF 100mm f/2 IS
EF 135mm f/2.8 IS
EF 135mm f/2.8 IS
Description and self-interpretation of the patent literature
  • Patent Publication No. 2014-10283
    • Publication date 2014.1.20
    • Filing date 2012.6.29
  • Example 1
    • Focal length f = 85.56mm
    • Fno. 1.86
    • Angle of view 2ω = 28.4 °
    • Image height Y = 21.635mm
  • Example 2
    • Focal length f = 102.06mm
    • Fno. 2.00
    • Angle of view 2ω = 23.9 °
    • Image height Y = 21.635mm
  • Example 3
    • Focal length f = 131.00mm
    • Fno. 2.80
    • Angle of view 2ω = 18.8 °
    • Image height Y = 21.635mm
  • Canon patents
    • Positive and negative positive
    • Inner Focus (group 2)
    • (Part of the third group) antivibration

via: EG