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