Ryota Ogawa
Asahi Kasei
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Publication
Featured researches published by Ryota Ogawa.
International Conferences on Optical Fabrication and Testing and Applications of Optical Holography | 1995
Koichi Maruyama; Makoto Iwaki; Syunitirou Wakamiya; Ryota Ogawa
The two types of diffractive optical elements capable of compensating chromatic aberration in MO data storage optics have been developed. One is a diffractive element that has little optical power, and is used in cooperation with an aspherical objective lens separated from each other. The other is an aspherical singlet with a diffractive grating on its surface. Both have a diffraction efficiency of 100% for the first order diffraction.
1980 International Lens Design Conference | 1980
Ryota Ogawa; Satoru Tachihara
Interpolation of lateral chromatic aberration and/or Hopkins algorithm of sinc-function are adopted to reduce the numerical error of white light OTF, where lateral chromatic aberration is present.
Archive | 1986
Yasuyuki Tejima; Ryota Ogawa
Archive | 1993
Yasuyuki Tejima; Yasunori Izawa; Nobutaka Minefuji; Ryota Ogawa
Archive | 2004
Keiichi Hotta; Ryota Ogawa; Hiroyuki Kato
Archive | 2001
Masami Shirai; Ryota Ogawa; Shinichi Suzuki; Homu Takayama
Archive | 1997
Koji Tsuda; Shinichi Suzuki; Ryota Ogawa
Archive | 1989
Yasuyuki Tejima; Ryota Ogawa; Makoto Sato
Archive | 1997
Koji Tsuda; Shinichi Suzuki; Ryota Ogawa
Archive | 1993
Yasutetsu Izawa; Nobutaka Minefuji; Ryota Ogawa; Yasuyuki Tejima; 康哲 井澤; 良太 小川; 延孝 峯藤; 康幸 手島
