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Jun Hirakawa

Asahi Kasei

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Publication

Featured researches published by Jun Hirakawa.

Archive | 1998

Super wide angle zoom lens

Jun Hirakawa

Archive | 1999

Adapter having a tilt and shift mechanism

Tetsuji Shono; Jun Hirakawa

Archive | 1996

Inner focus type telephoto zoom lens

Jun Hirakawa

Archive | 1989

Telephoto zoom lens system

Jun Hirakawa

Archive | 1996

Reflection-type compound optical elements

Toru Chiba; Masaki Shimizu; Jun Hirakawa

Archive | 1996

Two-group zoom lens

Jun Hirakawa

Archive | 1987

Wide angle reading lens system

Jun Hirakawa; Yasunori Arai

Archive | 1990

Wide-angle lens system of a retrofocus type

Jun Hirakawa

Archive | 1989

Telephoto lens system

Jun Hirakawa

Archive | 1994

Optical reflector, esp. e.g. a parabolic mirror

Toru Chiba; Masaki Shimizu; Jun Hirakawa

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Masaki Shimizu

Asahi Kasei

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Toru Chiba

Asahi Kasei

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Tetsuji Shono

Asahi Kasei

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Yasunori Arai

Asahi Kasei

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