Those are the latest Canon patents:

Canon 18-135mm f/3.5-5.6 lens patent for APS-C camera

Canon 18-90mm f/3.5-5.6 lens patent for APS-C camera

Canon 30mm f/2.8 lens patent for APS-C camera

Canon 500 f/4 lens patent (full frame)

Canon 500 f/5.6 lens patent (full frame)

Canon 600mm f/4 lens patent (full frame)

Canon 800mm f/5.6 lens patent (full frame)
Via Egami
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