Canon Patent: 18-270mm , 18-300mm , 18-200mm , 16-240mm , 16-200mm f/3.5-5.6 Lenses

New APS-C superzooms coming?

Egami (translated) spotted a new Canon patent. The patent refers to 18-270mm , 18-300mm , 18-200mm , 16-240mm , 16-200mm f/3.5-5.6 lenses.

Description and self-interpretation of the patent literature

• Patent Publication No. 2013-190453
  • Publication date 2013.9.26
  • Filing date 2012.3.12
• Example
  

  embodiment

  No.	Focal length	Fno.	Half angle	Lens constitution	Aspheric surface	UD glass
  One	18.75 – 59.52 – 270.67	3.18 – 4.69 – 5.88	36.08 – 12.93 – 2.89	19 pieces of 14 group	Three 3 surface	Three
  Three	18.67 – 54.99 – 299.50	3.39 – 4.79 – 5.88	36.18 – 13.95 – 2.61	21 pieces of 16 group	Four 4 surface	Three
  Four	18.54 – 49.15 – 194.16	3.22 – 4.22 – 5.66	36.36 – 15.52 – 4.02	18 pieces in 11 groups	Two 2 surface	Three
  Six	16.53 – 54.38 – 237.95	3.42 – 4.72 – 5.88	39.56 – 14.10 – 3.29	18 sheets 13 group	Four 4 surface	Two
  Seven	16.81 – 47.39 – 194.13	3.32 – 4.46 – 5.66	39.07 – 16.07 – 4.02	17 pieces of 12 group	Two 2 surface	Two

• Canon patent
  • 6-group zoom of positive and negative positive and negative positive and negative
  • Rear focus

[via Egami]