Canon files a patent for a 600mm f/5.6 lens

Canon's patent JPO 2010-145832 is for a 600mm f/5.6 lens:

600mm f/5.6 lens patent details:

  • Focal distance 582.48
  • F number 5.85
  • Field angle 2.13
  • Image height 21.64
  • Whole-length-of-the-lens 346.68

Canon also filed a patent for a 24-105/3.5-5.6 zoom lens:

  • Patent publication: 2010-237455
  • Patent released: 10/21/ 2010
  • Patent filed: 03/31/2009
  • Focal length f: 24.90 - 102.02mm
  • Aperture Fno: 3.62 - 5.82
  • Angle of view: 81.96 - 23.94 °
  • Image Ccrcle: 43.28mm
  • Total lens length: 119.84 - 151.84mn
  • One aspherical surface

Another Canon patent is for a sensor that can capture light with the help of micro lenses (Leica uses this technology in the M9, maybe Canon is preparing for their mirrorless camera):

  • Patent publication: 2010-243682
  • Patent released: 10/28/2010
  • Patent filed: 04/03/2009
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