Design and Fabrication of Aspheric Microlens Array for Optical Read-Only-Memory Card System
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概要
- 論文の詳細を見る
An optical head based on the Talbot effect with an aspheric microlens array for an optical read-only-memory (ROM) card system was designed and fabricated. The mathematical expression for the wavefield diffracted by a periodic microlens array showed that the amplitude distribution at the Talbot plane from the focal plane of the microlens array was identically equal to that at the focal plane. To use a reflow microlens array as a master pattern of an ultraviolet-imprinted (UV-imprinted) microlens array, the reflow microlens was defined as having an aspheric shape. To obtain optical probes with good optical qualities, a microlens array with the minimum spherical aberration was designed by ray tracing. The reflow condition was optimized to realize the master pattern of a microlens with a designed aspheric shape. The intensity distribution of the optical probes at the Talbot plane from the focal plane showed a diffraction-limited shape.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-08-30
著者
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Kim Young-joo
Center For Information Storage Device (cisd) Yonsei University
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Kim Hongmin
Department Of Mechanical Engineering Yonsei University
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Kang Shinill
Department of Mechanical Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul, Korea
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Jeong Gibong
Department of Mechanical Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul, Korea
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