Takahiro Ishikawa — Lens Patent Author | Surface & Stop

Takahiro Ishikawa2 related patents across 2 interactive lens diagrams.
View in relationship map →
Group by
Assignees
Nikon Corporation (2)
Nikon Corporation(2)JP WO2020/105107 A1↗2020Assignee: Nikon Corporation
Inventors: Takahiro Ishikawa, Norikazu Yokoi
NIKON NIKKOR Z DX 50-250mm f/4.5-6.3 VR— Production: 50-250 mm, f/4.5-6.3, Patent Example 1: f = 51.50-242.80 mm
WO 2022/264542 A1↗2022Assignee: Nikon Corporation
Inventors: Tomoyuki Sashima, Norikazu Yokoi, Takahiro Ishikawa
NIKON NIKKOR Z DX 18-140mm f/3.5-6.3 VR— 17 ELEMENTS / 13 GROUPS, f = 18.5–135.8 mm (design)