Hiromichi Ochiai — Lens Patent Author | Surface & Stop

Hiromichi Ochiai2 related patents across 2 interactive lens diagrams.
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Sigma Corporation (2)
Sigma Corporation(2)JP 2018-205527 A↗2018Assignee: Sigma Corporation
Inventors: Hiromichi Ochiai, Ryosuke Sato
SIGMA 16mm f/1.4 DC DN | Contemporary— 16 elements / 13 groups, f = 16.446 mm design; 16 mm marketed
CN 120386081 A↗2025Assignee: Sigma Corporation
Inventors: Hiromichi Ochiai
SIGMA 28-45mm f/1.8 DG DN | Art— 18 elements / 15 groups, 28.84-43.66 mm design EFL