Dependence of Differential Phase Detection Signals on Astigmatism in a Focused Spot

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概要

• 論文の詳細を見る

• We have simulated the differential phase detection (DPD) signal characteristics in the presence of astigmatism in the focused spot of an optical pickup for a DVD player. Both DPD signals generated from four elements and two elements of a four-segment photo-diode have been simulated. The DPD signal level and the offset level depend on the direction of astigmatism and the type of detection. In the two-element detection, astigmatism of 45 deg against the tangential direction of an optical disk deteriorates the DPD signal characteristics more severely than that of 0 deg along the tangential direction.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2004-07-15

著者

• Nakai Kenya

  Advanced Technology R & D Center Mitsubishi Electric Corp

• Shinoda Masahisa

  Advanced Technology R & D Center Mitsubishi Electric Corp

• MORI Kazuo

  Advanced Technology R & D Center, Mitsubishi Electric Corp

• Nakai Kenya

  Advanced Technology R&D Center, Mitsubishi Electric Corporation, 1, Zusho-Baba, Nagaokakyo 617-8550, Japan

• Shinoda Masahisa

  Advanced Technology R&D Center, Mitsubishi Electric Corporation, 1, Zusho-Baba, Nagaokakyo 617-8550, Japan

関連論文

• Dependence of Tracking Error Characteristics on Objective Lens Shift for In-Line-Type Differential Push-Pull Methods Using Segmented Gratings
• First Playback of High-Definition Video Contents from Super-Resolution Near-Field Structure Optical Disc
• Bit-Error-Rate Evaluation of Super-Resolution Near-Field Structure Read-Only Memory Discs with Semiconductive Material InSb
• One-Beam Push--Pull Method with Simple Holographic Optical Element for Multilayer Blu-ray Discs
• Simulation of Differential Phase Detection Method Combined with Astigmatic Method using a Half Mirror in an Optical Pick-up
• Focusing Error Detection Using Concentrically Separated Light Beams for Multilayer Optical Discs
• Dependence of Tracking Error Characteristics of In-Line-Type Differential Push-Pull Methods on Arrangement Error of Segmented Gratings
• Dependence of Differential Phase Detection Signals on Astigmatism in a Focused Spot

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