0.8-Numerical-Aperture Two-Element Objective Lens for the Optical Disk
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概要
- 論文の詳細を見る
A high-numerical-aperture (NA) optical pick-up for an optical disk was developed using a two-element lens, a thin disk substrate and a spherical aberration compensation mechanism. We designed a two-element objective lens rather than a conventional singlet objective lens in order to increase the fabrication tolerance of the objective lens for high NA. A disk substrate which is thinner than that of the digital video disk (DVD) was adopted to increase the disk tilt tolerance. A spherical aberration compensation mechanism was realized by controlling the distance between the two lenses of the objective using an actuator in order to cancel the aberration due to the variations in the disk thickness. In the experiment, we fabricated a two-element lens according to our design and confirmed that it performed as a high-quality 0.8-NA objective lens.
- 社団法人応用物理学会の論文
- 1997-01-30
著者
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Watanabe T
Department Of Innovative And Engineered Materials Interdisciplinary Graduate School Of Science And E
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Yamamoto K
Kaneka Corporation
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MAEDA Fumisada
Development Center, Home Network Company, Sony Corporation
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Ichimura Isao
Optical Disc Development Division Av-it Development Group. Sony Corporation
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Osato K
Av-it Development Group. Sony Corporation
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Maeda Fumisada
Development Center Home Network Company Sony Corporation
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Watanabe Takeo
Univ. Hyogo Hyogo Jpn
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YAMAMOTO Kenji
Advanced Development Laboratory, Sony Corporation
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OSATO Kiyoshi
Advanced Development Laboratory, Sony Corporation
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ICHIMURA Isao
Advanced Development Laboratory, Sony Corporation
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MAEDA Fumisada
Advanced Development Laboratory, Sony Corporation
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WATANABE Toshio
Advanced Development Laboratory, Sony Corporation
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Watanabe Takayuki
Department of Innovative and Engineered Materials, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology
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