Canon Files Patent for CN-E 70-200mm f/2.8 Lens

According to the Egami Blog, Canon has filed a patent for a CN-E 70-200mm f/2.8 lens for APS-C and Super 35mm sensor format cameras. Note that the lens will likely be marketed as a T2.8 lens to match their CN-E 15.5-47mm and 30-105mm lenses with the same image circle.

Description of the patent literature

Patent Publication No. 2015-230449

  • Published 2015.12.21
  • Filing date 2014.6.6

Example 1

  • Zoom ratio 2.86
  • Focal length 70.00 118.30 200.00
  • F-number 2.80 2.80 2.80
  • Half angle (in degrees) 12.52 7.49 4.45
  • Image height 15.55 15.55 15.55
  • Overall length of the lens 277.01 277.01 277.01
  • BF 44.72 44.72 44.72

Posted: 12/28/2015 5:26:26 AM CT   Posted By: Sean
Posted to: Canon News    Category: Camera and Lens Patents
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