Keita Kaifu — Lens Patent Author | Surface & Stop

Keita Kaifu2 related patents across 2 interactive lens diagrams.
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Sony Corporation (2)
Sony Corporation(2)US 2015/0226945 A1↗2015Assignee: Sony Corporation
Inventors: Takumi Matsui, Keita Kaifu
Numerical Example 1SONY FE 70-200mm f/4 G OSS— 21 elements / 15 groups, 70–200mm f/4 marketed
JP WO2019/188070 A1↗2019Assignee: Sony Corporation
Inventors: Koji Toyoda, Maya Kiyotoshi, Keita Kaifu, Kentaro Tawada
Numerical Example 3SONY ZEISS VARIO-SONNAR T* 9-72mm f/2.8-4.5 (Sony Cyber-shot RX100 VI / RX100 VII)— 15 ELEMENTS / 12 GROUPS, f ≈ 9.0–66.3 mm (DESIGN)