Design of an Aberration : Free Spherical Micro Lens with a Diffractive Relief Grating Film on a Refractive Spherical Glass Substrate
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概要
- 論文の詳細を見る
A combined micro-objective lens for optical disc use has been developed. The lens consists of a thin relief diffraction grating film and a planoconvex glass substrate. The combined lens, which is called the spherical grating lens (SGL), is inherently a spherical lens, but has some interesting features such as high numerical aperture and "spherical aberration"-free. The aberration in the refractive substrate is canceled by a thin diffraction grating film. This paper shows the ray tracing design of the SGL and the calculation results, and finally, the experimental results show that the SGL can he used as a low-cost objective lens in the optical disc head if it is appropriately designed.
- 社団法人応用物理学会の論文
- 1992-05-30
著者
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Mori Kazuo
The Institute Of Physical And Chemical Research
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Mori K
Display Device Research And Development Department Nippondenso Co. Ltd.
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Mori K
Matsushita Technoresearch Inc.
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Mori K
Saga Univ. Saga Jpn
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Mori Koichi
Department Of Radiological Sciences Ibaraki Prefectural University Of Health Sciences
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GOTO Kenya
Department of Information and Communication Technology Tokai University
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Mori K
Department Of Radiological Sciences Ibaraki Prefectural University Of Health Sciences
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Goto Kenya
Department Of Information & Communication Technology School Of High-technology For Human Welfare
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Mori Kazushige
Electron Tube & Device Group Toshiba Corporation
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