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]