Akio Arakawa — Lens Patent Author | Surface & Stop

Akio Arakawa5 related patents across 5 interactive lens diagrams.
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Tamron Co., Ltd. (5)
Tamron Co., Ltd.(5)JP 2003-344768 A↗2003Assignee: Tamron Co., Ltd.
Inventors: Akio Arakawa
Sole exampleTAMRON SP AF 200-500mm f/5-6.3 Di LD [IF]— 13 ELEMENTS / 10 GROUPS, 200-500mm f/5-6.3
JP 2007-133138 A↗2007Assignee: Tamron Co., Ltd.
Inventors: Akio Arakawa, Yuichi Muramatsu
Example 2TAMRON SP AF 17-50mm f/2.8 XR Di II LD Aspherical [IF] (A16)— 16 ELEMENTS / 13 GROUPS, DESIGN f = 17.40–48.50 mm
US 2008/0212200 A1↗2008Assignee: Tamron Co., Ltd.
Inventors: Dayong Li, Akio Arakawa
Example 1TAMRON SP AF 70-200mm f/2.8 Di LD [IF] MACRO— 18 ELEMENTS / 13 GROUPS, 70-200mm f/2.8 (MARKETING)
JP 2010-044103 A↗2010Assignee: Tamron Co., Ltd.
Inventors: Akio Arakawa, Yuichi Muramatsu
Sole exampleTAMRON AF 18-270mm f/3.5-6.3 Di II VC LD ASPHERICAL [IF] MACRO (B003)— 18 ELEMENTS / 13 GROUPS, DESIGN f = 18.40–264.21 mm
US 8,228,605 B2↗2012Assignee: Tamron Co., Ltd.
Inventors: Akio Arakawa, Lai Wei
Example 2TAMRON SP 70-300mm f/4-5.6 Di VC USD— 17 ELEMENTS / 12 GROUPS, DESIGN 71.75–292.00mm