Canon Patents

Patent: Optional Image Stabilization Unit

A patent showing an optional image stabilization unit that can be put into a lens without changing its focal length has been filed.

Patent Publication No. 2015-28555 (Google Translated)

  • Published 2015.2.12
  • Filing date 2013.7.30

Example 1a (master lens only)

  • Focal length 392.50
  • F-number 2.92
  • Half angle of 3.16
  • Image height 21.64
  • Overall length of the lens 379.64
  • BF 41.57
  • Effective diameter of the front lens 135.72mm
  • Lens configuration 8 groups nine

Example 1b (anti-vibration converter mounted state)

  • Focal length 392.50
  • F-number 2.92
  • Half angle of 3.16
  • Image height 21.64
  • Overall length of the lens 379.64
  • BF 41.56
  • Effective diameter of the front lens 135.72mm
  • Lens construction 12 groups 15 sheets

Canon patent

  • 3-group configuration of positive and negative positive
  • Inner focus (the second group)
  • The anti-vibration converter can be inserted on the object side of the third group

Source: [EG] via [NL]

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