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Canon Patents This Week

New Macros and Tilt Shifts Coming?
Recent patents have shown new Macro and Tilt-Shift lenses. Below I’ve listed them.

Explain a patent
You cannot patent a lens per se, but you can patent an optical formula. I think it’s safe to talk about patents, as many of them have turned into actual consumer products.


Canon 50mm 1:1 f/2.8 Macro


 


Canon 90mm f/2.8 Tilt Shift

 


Canon 35mm f/2.8 1:2 Macro

 

Patent Publication No. 2011-107313
Published 2011.6.2
Filled 2009.11.16

50mm f/2.8 1:1 Macro

  • Focal distance f=50.20mm
  • Fno=2.90
  • Half angle of view 23.32 deg.
  • Image height 21.64mm
  • Lens length 84.64mm
  • Back focus 40.01mm
  • Macro -0.950x

90mm f/2.8 Tilt Shift

  • Focal distance f=90.40mm
  • Fno=2.90
  • Half angle of view 17.90 deg.
  • Image height 29.20mm
  • Lens length 117.18mm
  • Back focus 65.43mm
  • Macro -0.480x

35mm f/2.8 1:2 Macroa

  • Focal distance f=35.20mm
  • Fno=2.90
  • Half angle of view 31.58 deg.
  • Image height 21.64mm
  • Lens length 102.44mm
  • Back focus 40.10mm
  • Macro -0.480x

 

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