Tetsuichiro Okumura — Lens Patent Author | Surface & Stop

Tetsuichiro Okumura4 related patents across 4 interactive lens diagrams.
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Canon Inc. (2)
Sony Corporation (1)
Sony Group Corporation (1)
Canon Inc.(2)US 2012/0013996 A1↗2012Assignee: Canon Inc.
Inventors: Tetsuichiro Okumura
CANON EF 8-15mm f/4 L Fisheye USM— 14 elements / 11 groups, 8-15 mm marketed; 8.05-15.14 mm design
US 2014/0211029 A1↗2014Assignee: Canon Inc.
Inventors: Tetsuichiro Okumura
CANON EF-S 55-250mm f/4-5.6 IS STM— 15 elements / 12 groups, 55-250mm f/4-5.6 marketed; 56.80-241.32mm patent design
Sony Corporation(1)WO 2020/213337 A1↗2020Assignee: Sony Corporation
Inventors: Kota Omiya, Tetsuichiro Okumura
SONY FE 20mm f/1.8 G— 14 ELEMENTS / 12 GROUPS, 20 mm (scaled from 19.5069 mm paraxial)
Sony Group Corporation(1)JP 2023-44106 A↗2023Assignee: Sony Group Corporation
Inventors: Kohei Uemura, Tetsuichiro Okumura, Naoki Miyagawa
SONY FE PZ 16-35mm f/4 G— 13 ELEMENTS / 12 GROUPS, 16.48-33.96 mm PATENT ZOOM STATES