Masakazu Hibino — Lens Patent Author | Surface & Stop

Masakazu Hibino2 related patents across 2 interactive lens diagrams.
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Sigma Corporation (2)
Sigma Corporation(2)JP 2014-145954 A↗2014Assignee: Sigma Corporation
Inventors: Masakazu Hibino
SIGMA 60mm f/2.8 DN | Art— 8 elements / 6 groups, f = 60.00 mm patent design
JP 2017-167327 A↗2017Assignee: Sigma Corporation
Inventors: Masakazu Hibino
PANASONIC LEICA DG SUMMILUX 12mm f/1.4 ASPH.— 15 elements / 12 groups, 12 mm nominal; f = 11.9795 mm design