Takashi Matsushita — Lens Patent Author | Surface & Stop

Takashi Matsushita3 related patents across 3 interactive lens diagrams.
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Canon Inc. (3)
Canon Inc.(3)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)
JP S62-078520 A↗1987Assignee: Canon Inc.
Inventors: Takashi Matsushita
CANON EF 28mm f/2.8— 5 ELEMENTS / 5 GROUPS, f = 28.219 mm (MODELED)
JP S63-17421 A↗1988Assignee: Canon Inc.
Inventors: Takashi Matsushita
CANON EF 15mm f/2.8 Fisheye— 8 ELEMENTS / 7 GROUPS, PATENT F = 15.3 mm