Hiromichi Ochiai — Lens Patent Author | Surface & Stop

Hiromichi Ochiai3 related patents across 3 interactive lens diagrams.
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Sigma Corporation (3)
Sigma Corporation(3)JP 2018-205527 A↗2018Assignee: Sigma Corporation
Inventors: Hiromichi Ochiai, Ryosuke Sato
Numerical Example 1SIGMA 16mm f/1.4 DC DN | Contemporary— 16 elements / 13 groups, f = 16.446 mm design; 16 mm marketed
JP 2021-92636 A↗2021Assignee: Sigma Corporation
Inventors: Hiromichi Ochiai
Numerical Example 1SIGMA 100-400mm f/5-6.3 DG DN OS | Contemporary— 22 ELEMENTS / 16 GROUPS, DESIGN f = 103.00–387.40 mm
CN 120386081 A↗2025Assignee: Sigma Corporation
Inventors: Hiromichi Ochiai
Numerical Example 1SIGMA 28-45mm f/1.8 DG DN | Art— 18 elements / 15 groups, 28.84-43.66 mm design EFL