skip to Main Content

Canon Patent For 100-400mm f/3.5-5.6 STM And 55-250mm f/4-5.6 IS STM Lenses

Canon Patent

100-400mm f/3.5-5.6 STM

Canon Patent

55-250mm f/4-5.6 IS STM

Egami (translated) spotted a patent filed by Canon for 100-400mm f/3.5-5.6 STM and 55-250mm f/4-5.6 IS STM lenses.

  • Patent Publication No. 2014-102462
    • Publication date 2014.6.5
    • Filing date 2012.11.22
  • Example 1
    • Zoom ratio 4.24
    • Focal length f = 56.90-133.00-241.28mm
    • Fno. 4.12-5.04-5.83
    • Half angle ω = 13.50-5.86-3.24 °
    • Image height 13.66mm
    • 154.33-176.38-191.20mm overall length of the lens
    • BF 41.21mm
  • Example 5
    • Zoom ratio 3.73
    • Focal length f = 104.59-199.99-389.99mm
    • Fno. 4.58-5.03-5.87
    • Half angle ω = 11.69-6.17-3.18 °
    • Image height 21.64mm
    • 245.09-285.06-308.91mm overall length of the lens
    • BF 68.73mm

 

Back To Top

Notice

This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. If you want to know more or withdraw your consent to all or some of the cookies, please refer to the cookie policy.
By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to the use of cookies.