Hidetaka Maeda
Seiko Instruments
54 Papers
276 Citations
Hidetaka Maeda is an academic researcher from Seiko Instruments. The author has contributed to research in topics: Aperture & Ray. The author has an hindex of 9, co-authored 54 publications. Previous affiliations of Hidetaka Maeda include National Institute of Water and Atmospheric Research.
Chat about Author
Papers
Patent
Information recording and reproducing apparatus
Nobuyuki Kasama,Manabu Oumi,Yasuyuki Mitsuoka,Hidetaka Maeda,Kenji Kato,Takashi Niwa +5 more
- 11 Apr 2001
TL;DR: In this article, an information recording and reproducing apparatus comprising a multi-phase quadrature angular modulator for subjecting a signal to be written on a recording medium to multiphase angular modulation is described.
19
Patent
Recording medium, near field optical head, optical recording device, and method of manufacturing thereof
Manabu Oumi,Nobuyuki Kasama,Hidetaka Maeda,Kenji Kato,Takashi Niwa,Yasuyuki Mitsuoka,Yoko Shinohara +6 more
- 26 Jan 2001
TL;DR: In this article, an information recording/reproduction device for implementing high-density information recording and reading using mutual interaction of a recording medium with near field light, and particularly to a near field optical head with a high optical efficiency and a manufacturing method thereof.
14
Patent
Optical information recording and reproducing device
Arawa Takashi,Terunao Hirota,Hiroshi Hosaka,Susumu Ichihara,Kiyoshi Itao,Kasama Noboyuki,Kenji Kato,Hidetaka Maeda,Yasayuki Mitsuoka,Okubo Toshibumi,Omi Manabu,Yoko Shinohara,寛 保坂,靖幸 光岡,英孝 前田,健二 加藤,俊文 大久保,学 大海,進 市原,輝直 廣田,隆 新輪,清 板生,宣行 笠間,陽子 篠原 +23 more
- 22 Jun 2001
TL;DR: In this paper, an optical waveguide is designed to have a flexible end face of the core in the midway of the optical waveguide and at the fixed part with the near-field optical head, thereby expanding in the light beam for recording/reproducing information.
14
Patent
Method for forming optical aperture, near-field optical head, method for fabricating near-field optical head, and information recording/reading apparatus
Takashi Niwa,Kenji Kato,Yasuyuki Mitsuoka,Manabu Oumi,Nobuyuki Kasama,Susumu Ichihara,Hidetaka Maeda,Yoko Shinohara +7 more
- 23 Feb 2006
TL;DR: In this paper, a near-field optical head has a main surface confronting a recording medium during use of the near field optical head, and an opaque film covers the sharpened tip and has a plastically deformed portion in the vicinity of the optical aperture.
14
Patent
Method for forming aperture, near field optical head and method for fabricating the same and information recording/reading apparatus
Susumu Ichihara,Nobuyuki Kasama,Kenji Kato,Hidetaka Maeda,Yasuyuki Mitsuoka,Takashi Niwa,Manabu Oumi,Yoko Shinohara +7 more
- 05 Jun 2001
TL;DR: In this paper, a near field optical head capable of recording and reading high density information at high speed with excellent mass production is presented, in which stoppers having almost the same height as that of a tip of conical or pyramidal shape are disposed around the tip, a part of a pressing body covering the tip and the stoppers is displaced by an external force, and the part of the pressing body having displaced is allowed to come into contact with an opaque film near the point of the tip.
13