Canon Patent For New Macro Lenses With Hybrid IS (180mm, 200mm, 300mm)

Egami (translated) spotted another patent filed by Canon, this time for new macro lenses with hybrid image stabilization: 180mm f/3.5 IS, 200mm f/3.5 IS, and 300mm f/3.5 IS.

• Patent Publication No. 2014-41224
  • Publication date 2014.3.6
  • Filing date 2012.8.22
• Example 1
  • Zoom ratio 1.37
  • Focal length f = 180.03-167.06-131.08mm
  • Fno (3.6-4.8-5.8 actual aperture). 3.6-3.3-2.59
  • Half angle ω = 6.85-7.38-9.37 °
  • Image height 21.64mm
  • The overall length of the lens 228.39mm
  • BF 68.14mm
• Example 2
  • Zoom ratio 1.58
  • Focal length f = 198.49-164.7-125.48mm
  • Fno (3.6-4.8-5.8 actual aperture). 3.6-2.99-2.28
  • Half angle ω = 6.22-7.48-9.78 °
  • Image height 21.64mm
  • The overall length of the lens 231.65mm
  • BF 71.4mm
• Example 3
  • Zoom ratio 1.92
  • Focal length f = 289.97-213.39-151.33mm
  • Fno (3.6-4.8-5.8 actual aperture). 3.6-2.65-2.21
  • Half angle ω = 4.27-5.79-8.14 °
  • Image height 21.64mm
  • The overall length of the lens 294.36mm
  • BF 68.05mm
• Canon patents
  • Inner focus
  • (Part of the fourth lens group) antivibration
  • Supports Shifutobure
  • Floating