Takeshi Umeda — Lens Patent Author | Surface & Stop

Takeshi Umeda3 related patents across 3 interactive lens diagrams.
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Nikon Corporation (3)
Nikon Corporation(3)WO 2019/049372 A1↗2019Assignee: Nikon Corporation
Inventors: Takeshi Umeda
NIKON NIKKOR Z 24-70mm f/4 S— 14 ELEMENTS / 11 GROUPS, f = 24.72 – 67.91 mm (2.75× zoom)
WO 2020/012638 A1↗2020Assignee: Nikon Corporation
Inventors: Yoko Komatsubara, Takeshi Umeda
NIKON NIKKOR Z DX 16-50mm f/3.5-6.3 VR— 9 ELEMENTS / 7 GROUPS, f = 16.46–48.50 mm
WO 2021/117563 A1↗2021Assignee: Nikon Corporation
Inventors: Fumiaki Ohtake, Azuna Nonaka, Yoshiharu Yuasa, Takeshi Umeda
NIKON NIKKOR Z 14-24mm f/2.8 S— 16 ELEMENTS / 11 GROUPS, f = 14.4–23.3 mm (patent) / 14–24 mm (production)