Takahiko Oishi — Lens Patent Author

Takahiko Oishi1 related patent across 1 interactive lens diagram.
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Ricoh Imaging Company, Ltd. (1)
Ricoh Imaging Company, Ltd.(1)JP 2015-11156 A↗2015Assignee: Ricoh Imaging Company, Ltd.
Inventors: Takahiko Oishi
HD PENTAX-DA 20-40mm f/2.8-4 ED Limited DC WR— 9 ELEMENTS / 8 GROUPS, 20–40mm f/2.8–4 (production)