Yasuo Takahashi — Lens Patent Author | Surface & Stop

Yasuo Takahashi3 related patents across 3 interactive lens diagrams.
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Asahi Kogaku Kogyo Co., Ltd. (3)
Asahi Kogaku Kogyo Co., Ltd.(3)US 3,459,469↗1969Assignee: Asahi Kogaku Kogyo Co., Ltd.
Inventors: Yasuo Takahashi
PENTAX SUPER-TAKUMAR 135mm f/2.5— 5 ELEMENTS / 4 GROUPS, 135mm f/2.5 MARKETED
US 3,490,825↗1970Assignee: Asahi Kogaku Kogyo Co., Ltd.
Inventors: Yasuo Takahashi
PENTAX ULTRA-ACHROMATIC-TAKUMAR 85mm f/4.5— 5 ELEMENTS / 5 GROUPS, f = 85mm (PATENT f = 100mm × 0.85)
US 3,506,336↗1970Assignee: Asahi Kogaku Kogyo Co., Ltd.
Inventors: Yasuo Takahashi
PENTAX SUPER-TAKUMAR 35mm f/2— 8 ELEMENTS / 7 GROUPS, f = 35.000 mm