Sadatoshi Takahashi — Lens Patent Author | Surface & Stop

Sadatoshi Takahashi5 related patents across 5 interactive lens diagrams.
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Canon Inc. (5)
Canon Inc.(5)JPS61-77818A1986Assignee: Canon Inc.
Inventors: Keiji Ikemori, Sadatoshi Takahashi, Takashi Matsushita, Tsunefumi Tanaka, Nozomi Kitagishi
CANON EF 100-300mm f/5.6— 15 ELEMENTS / 9 GROUPS, 100-300mm f/5.6 (MARKETED)
US 4,717,245↗1988Assignee: Canon Inc.
Inventors: Sadatoshi Takahashi
CANON EF 50mm f/1.0 L USM— 11 ELEMENTS / 9 GROUPS, f ≈ 50.0 mm
JP H01-102413 A↗1989Assignee: Canon Inc.
Inventors: Hideki Ogawa, Sadatoshi Takahashi
CANON EF 200mm f/1.8 L USM— 10 POWERED ELEMENTS / 8 GROUPS (PATENT CORE), f ≈ 200.017 mm
JP H01-189622 A↗1989Assignee: Canon Inc.
Inventors: Sadatoshi Takahashi
CANON EF 28-70mm f/3.5-4.5 II— 10 ELEMENTS / 9 GROUPS, DESIGN EFL 29.083-67.894 mm
US 5,000,550↗1991Assignee: Canon Inc.
Inventors: Sadatoshi Takahashi, Koutaro Yano, Hiroshi Endo
CANON EF 20-35mm f/2.8 L— 15 elements / 12 groups, 20.6-34.0 mm design zoom