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The latest patents from Canon

Canon filed a patent of Canon 20-45Mm F2.8-4 , which is based on optical technology and lens design .

Description, self-interpretation of the patent literature

  • Patent Publication No. 2015-197593
  • Published 2015.11.9
  • Filing date 2014.4.1

patentCanon 25-125mm F2.8 (Super 35mm) Lens Patnet

Description, self-interpretation of the patent literature

patent 1Patent Publication No. 2015-176118

  • Published 2015.10.5
  • Filing date 2014.3.18

Example 1

  • Zoom ratio 5.00
  • Focal length 25.00 125.00
  • F-number 2.90
  • Half angle (in degrees) 29.42 6.44
  • Image height 14.10
  • Overall length of the lens 446.92
  • BF 50.00
  • Effective diameter of the front lens 118.67
  • Lens configuration 24 group 30 sheets
  • Aspherical two faces two
  • Super UD 2
  • UD 1
  • 4-group configuration of positive and negative negative-positive
  • Inner focus (part of the first group)
  • Inner Zoom (Group 2 and Group 3)

Proceed with us for more information.

 

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