Shigenobu Sugita — Lens Patent Author | Surface & Stop

Shigenobu Sugita3 related patents across 4 interactive lens diagrams.
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Canon Inc. (3)
Canon Inc.(3)US 2011/0090576 A1↗2011Assignee: Canon Inc.
Inventors: Shigenobu Sugita
CANON EF 400mm f/2.8 L IS II USM— 15 ACTIVE ELEMENTS / 11 GROUPS (G FILTER EXCLUDED), PATENT f = 392.15 mm; COMPUTED EFL 392.2607 mmCANON EF 600mm f/4 L IS II USM— 15 ACTIVE ELEMENTS / 11 GROUPS, f = 584.82 mm (MODELED)
JP 2013-140404 A↗2013Assignee: Canon Inc.
Inventors: Shigenobu Sugita
CANON EF 70-300mm f/4-5.6 L IS USM— 19 elements / 14 groups, 72.20–290.00 mm design EFL
US 2015/0146044 A1↗2015Assignee: Canon Inc.
Inventors: Shigenobu Sugita
CANON EF 100-400mm f/4.5-5.6 L IS II USM— 21 ELEMENTS / 16 GROUPS, PATENT ZOOM POINTS 102.79-389.03 mm