Yuichi Muramatsu — Lens Patent Author | Surface & Stop

Yuichi Muramatsu3 related patents across 3 interactive lens diagrams.
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Tamron Co., Ltd. (3)
Tamron Co., Ltd.(3)JP 2003-329924 A↗2003Assignee: Tamron Co., Ltd.
Inventors: Yuichi Muramatsu
Example 2TAMRON SP AF 180mm f/3.5 Di LD [IF] MACRO 1:1 (B01)— 14 ELEMENTS / 11 GROUPS, PATENT f = 176.9587 mm; DATA SCALED TO 180 mm
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
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