Akio Arakawa — Lens Patent Author | Surface & Stop

Akio Arakawa3 related patents across 3 interactive lens diagrams.
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Tamron Co., Ltd. (2)
No named assignee or applicant (1)
Tamron Co., Ltd.(2)JP 2003-344768 A↗2003Assignee: Tamron Co., Ltd.
Inventors: Akio Arakawa
TAMRON SP AF 200-500mm f/5-6.3 Di LD [IF]— 13 ELEMENTS / 10 GROUPS, 200-500mm f/5-6.3
US 8,228,605 B2↗2012Assignee: Tamron Co., Ltd.
Inventors: Akio Arakawa, Lai Wei
TAMRON SP 70-300mm f/4-5.6 Di VC USD— 17 ELEMENTS / 12 GROUPS, DESIGN 71.75–292.00mm
No named assignee or applicant(1)US 2008/0212200 A1↗2008Inventors: Dayong Li, Akio Arakawa
TAMRON SP AF 70-200mm f/2.8 Di LD [IF] MACRO— 18 ELEMENTS / 13 GROUPS, 70-200mm f/2.8 (MARKETING)