Design of Compatible Optics for Solid-Immersion-Lens-Based Near-Field Recording System and Blu-ray Disc Using Relay Lens
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概要
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We designed compatible optics for a solid-immersion-lens (SIL)-based near-field recording (NFR) system and a Blu-ray disc (BD). The working distance, numerical aperture (NA), and cover layer thickness of the SIL-based NFR system differ from those of BD. Therefore, for the compatibility of a cover layer incident type NFR system of whose NA is 1.46 and BD, we use a relay lens that is composed of two low-NA lenses. The optical tolerances such as decenter, tilt, and SIL thickness tolerances are considered to ensure manufacturability. The decenter and tilt tolerances of each optical component are greater than 1.0 μm and 0.1°, respectively. The tolerance of the SIL thickness range is 14 μm at the criterion of the wavefront aberration of $0.035\,\lambda_{\text{rms}}$. We design the optical layout and simulate each focus error signal of BD and the SIL-based NFR system. From the practical design results, we confirm that the SIL-based NFR system can be compatible to BD with a simple relay lens.
- 2009-03-25
著者
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Park No-cheol
Department Of Mechanical Engineering Yonsei University
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Park Young-pil
Department Of Mechanical Engineering Yonsei University
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Kim Wan-chin
Center For Information Storage Device Yonsei University
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Park Kyoung-su
Center For Information Storage Device (cisd) Yonsei University
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Choi Hyun
Department Of Dermatology And Artificial Organ Laboratory Of The Clinical Research Institute Seoul N
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Yoon Yong-joong
Center For Information Storage Device Yonsei University
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Choi Hyun
Department of Mechanical Engineering, Yonsei University, 134 Shinchon-dong, Sudaemun-gu, Seoul 120-749, Korea
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Kim Jong-Pil
Center for Information Storage Device, Yonsei University, 134 Shinchon-dong, Sudaemun-gu, Seoul 120-749, Korea
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Kim Wan-Chin
Center for Information Storage Device (CISD), Yonsei University, 134 Shinchon-Dong, Seodaemoon-Ku, Seoul 120-749, Korea
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Yoon Yong-Joong
Center for Information Storage Device, Yonsei University, 134 Shinchon-dong, Sudaemun-gu, Seoul 120-749, Korea
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Park Kyoung-Su
Center for Information Storage Device, Yonsei University, 134 Shinchon-dong, Sudaemun-gu, Seoul 120-749, Korea
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