Yoshitsugi Ikeda — Lens Patent Author | Surface & Stop

Yoshitsugi Ikeda5 related patents across 5 interactive lens diagrams.
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Olympus Optical Co., Ltd. (5)
Olympus Optical Co., Ltd.(5)US 3,827,781↗1974Assignee: Olympus Optical Co., Ltd.
Inventors: Yoshitsugi Ikeda
Sole exampleOLYMPUS ZUIKO AUTO-T 600mm f/6.5— 6 ELEMENTS / 4 GROUPS, DESIGN f = 600.0 mm
US 3,838,911↗1974Assignee: Olympus Optical Co., Ltd.
Inventors: Yoshitsugi Ikeda
Embodiment 1OLYMPUS E.ZUIKO AUTO-T 135mm f/3.5— 5 ELEMENTS / 4 GROUPS, f ≈ 135.0 mm
US 4,025,167↗1977Assignee: Olympus Optical Co., Ltd.
Inventors: Yoshitsugi Ikeda
Embodiment 2OLYMPUS ZUIKO AUTO-ZOOM 85-250mm f/5— 15 elements / 11 groups, 85-250mm
US 4,063,802↗1977Assignee: Olympus Optical Co., Ltd.
Inventors: Toshihiro Imai, Yoshitsugi Ikeda
Embodiment 1OLYMPUS ZUIKO AUTO-T 85mm f/2— 5 ELEMENTS / 4 GROUPS, f ≈ 85.0 mm
US 4,210,388↗1980Assignee: Olympus Optical Co., Ltd.
Inventors: Yoshitsugi Ikeda
Sole exampleOLYMPUS ZUIKO AUTO-W 21mm f/2— 11 ELEMENTS / 9 GROUPS, f ≈ 21 mm (marketed) / 28.5 mm (computed)