Tokina new 70-200mm FX Lens Patent

Tokina 70 200mm lens patents

Egami posted a new Tokina 70-200mm FX lens patent. There is no info on the lens aperture.

Early this year, Tokina exhibits 70-200mm F4 FX lens at CP+ in Japan, this lens hasn’t released yet.

Description and self-interpretation of the patent literature (Translated by Google)
  • Patent Publication No. 2013-156502
    • Publication date 2013.8.15
    • Filing date 2012.1.31
    • Applicant Kenko Tokina
  • Example 1
    • Focal length f = 72-105-194mm
    • Image height 21.59mm
    • 19 pieces of 14-group lens configuration
  • Tokina patents
    • 4 group structure of the positive and negative positive positive
    • Inner zoom
    • (1 part of the first group) inner focus
    • (Part of the fourth group) correction to shake
    • Minimum focusing distance 1m

Via: Egami