Pentax 18-55mm f/3.5-6.7 mirrorless APS-C lens patent

Pentax filed a patent 2012-10830 in Japan for a 18-55mm f/3.5-6.7 lens (28-80mm equivalent) for APS-C mirrorless camera (like the K-01 or maybe for a new mirrorless model):

  • Patent release date: June 7, 2012
  • Patent filing date: October 17, 2010
  • Zoom ratio: 2.85x
  • Aperture: 3.6 - 6.7
  • Focal length: 18.60 - 53.00mm
  • Image height: 14.24mm
  • Back Focus: 3.00mm
  • 8 lens elements in 7 groups, 1 ED glass element, three aspherical elements
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