Masahiko Yatsu
Hitachi
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Publication
Featured researches published by Masahiko Yatsu.
international conference on consumer electronics | 1997
S. Ohuci; Takashi Kakuda; Masahiko Yatsu; N. Ozawa; Masaharu Deguchi; Takesuke Maruyama
In order to realize a high-brightness compact liquid crystal (LC) projector, a high-collection illumination system comprising combinational reflectors, a polarization converter, and a high efficiency multi-lens has been developed.
1990 Intl Lens Design Conf | 1991
Masahiko Yatsu; Masaharu Deguchi; Takesuke Maruyama
T types of zoan lens with aspherical surfaces for camcorder has been succssfu11y design1 . The first type has single aspherical glass lens , axx realizes sizeruction of 30% than cxxiventicxal zocxn lens. Ar the secori type consists of light-weight plastic lenses with aspherical surface in order to ru weight of zoan lens.
international conference on consumer electronics | 1999
Satoshi Ohuchi; Masahiko Yatsu; Tomohiro Miyoshi; Taro Imahase; Yasuo Ohtsuka
In order to realize high-brightness and high quality pictures for a ultra portable liquid crystal (LC) projector, a high-collection illumination system comprising a polarization converter, multi lenses, a small-size LC panel with micro lens system and a newly color-optical system has been developed.
Proceedings of SPIE | 1992
Masahiko Yatsu; Masaharu Deguchi; Kenji Kobayashi; Takesuke Maruyama
In order to realize a compact and light-weight zoom lens for video camera, we have applied the aspherical plastic lens technology. In this design, we found the methods, elimination of the lens group, and replacement from a glass lens to a aspherical plastic lens.
Archive | 2004
Nobuhiko Konuma; Hidetomo Yoshimura; Seiichi Sekiguchi; Mikiharu Kuwata; Masaharu Deguchi; Takashi Kakuda; Yutaka Matsuda; Takuya Shiaki; Futoshi Yamasaki; Atsushi Ishibashi; Koichi Umezawa; Takeshi Hoshino; Shigehisa Hagura; Makoto Fukatsu; Nobuyuki Kaku; Kenji Fuse; Satoshi Ohuchi; Tomohiro Miyoshi; Naohiro Ozawa; Masahiko Yatsu; Yasuo Otsuka; Takesuke Maruyama
Archive | 2003
Koji Hirata; Naoyuki Ogura; Masahiko Yatsu; Hidehiro Ikeda
Archive | 2006
Koji Hirata; Masahiko Yatsu
Archive | 2003
Hidehiro Ikeda; Masahiko Yatsu; Koji Hirata; Junichi Ikoma
Archive | 2005
Tsutomu Nakashima; Masahiko Yatsu; Koji Hirata
Archive | 2008
Kazuo Shikita; Masahiko Yatsu
