中国物理B ›› 2002, Vol. 11 ›› Issue (9): 932-939.doi: 10.1088/1009-1963/11/9/315

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Movement dynamics analysis for an optical pickup head lens actuator in a digital versatile disc system

黄磊, 巩马理, 贾维溥, 闫平, 崔瑞祯, 张海涛   

  1. Department of Precision Instruments, Tsinghua University, Beijing 100084, China
  • 收稿日期:2002-03-26 修回日期:2002-04-24 出版日期:2005-06-12 发布日期:2005-06-12

Movement dynamics analysis for an optical pickup head lens actuator in a digital versatile disc system

Huang Lei (黄磊), Gong Ma-Li (巩马理), Jia Wei-Pu (贾维溥), Yan Ping (闫平), Cui Rui-Zhen (崔瑞祯), Zhang Hai-Tao (张海涛)   

  1. Department of Precision Instruments, Tsinghua University, Beijing 100084, China
  • Received:2002-03-26 Revised:2002-04-24 Online:2005-06-12 Published:2005-06-12

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摘要： With the rapid development of CD/DVD (compact disc/digital versatile disc) technology, the disc rotation speed and the information density have increased greatly to fulfil the demand of high information bit rate transfer. As one of the most important elements in a DVD pickup head, objective lens actuators are required to provide a more precise means to accurately follow the disc deviation. The design of the lens actuator becomes all the more important and critical. In order to give complete suggestion to the design of the lens actuator, we put forward the movement differential equations as a new theoretical means to analyse the characteristics of the lens actuator reliably and rigorously. Based on the theoretical analyses, many important and effective methods are proposed. A typical experiment verifies that the performance of our lens actuator head, which adopts these methods, can satisfy the high speed and high density requirement of DVD systems.

Abstract: With the rapid development of CD/DVD (compact disc/digital versatile disc) technology, the disc rotation speed and the information density have increased greatly to fulfil the demand of high information bit rate transfer. As one of the most important elements in a DVD pickup head, objective lens actuators are required to provide a more precise means to accurately follow the disc deviation. The design of the lens actuator becomes all the more important and critical. In order to give complete suggestion to the design of the lens actuator, we put forward the movement differential equations as a new theoretical means to analyse the characteristics of the lens actuator reliably and rigorously. Based on the theoretical analyses, many important and effective methods are proposed. A typical experiment verifies that the performance of our lens actuator head, which adopts these methods, can satisfy the high speed and high density requirement of DVD systems.

Key words: optical storage, DVD, lens actuator, focusing

中图分类号:  (Optical storage systems, optical disks)

  • 42.79.Vb
42.79.Bh (Lenses, prisms and mirrors) 02.30.Hq (Ordinary differential equations)