Axial vibration characteristics considering a moving pick-up unit for the flexible optical disk system

Jun Hyeon Jo, Yoon Chul Rhim

Research output: Contribution to journalArticlepeer-review

Abstract

The axial vibration characteristics of the flexible optical disk are investigated experimentally considering the pick-up window and the geometry of a moving pick-up. The axial runout of the disk is measured by using a laser displacement sensor along the four perpendicular radial directions. Measurements are conducted with respect to the shapes of pick-up faces, which have different radius of curvatures, as well as to the positions of the moving pick-up. A flat stabilizer with damping orifices is used in the experiment and the disk is rotated at 8,000, 10,000, and 12,000 rpm. The axial runouts and the displacements of the disk are measured for 6 different shaped pick-ups. The smallest axial runout of 10 μm, which is well manageable for the current optical disk drive technology, is obtained when we use the curved pick-up with curvatures of 400mm in the direction of disk rotation.

Original languageEnglish
Article number09MC06
JournalJapanese journal of applied physics
Volume50
Issue number9 PART 2
DOIs
Publication statusPublished - 2011 Sep

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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