发明授权
US06754153B2 Exposure apparatus for optical disc 失效
光盘曝光装置

  • 专利标题: Exposure apparatus for optical disc
  • 专利标题(中): 光盘曝光装置
  • 申请号: US09902242
    申请日: 2001-07-10
  • 公开(公告)号: US06754153B2
    公开(公告)日: 2004-06-22
  • 发明人: Takashi Obara
  • 申请人: Takashi Obara
  • 优先权: JP2000-209777 20000711; JP2000-275604 20000911
  • 主分类号: G11B700
  • IPC分类号: G11B700
Exposure apparatus for optical disc
摘要:
An exposure apparatus for an optical disc used for eliminating the vibrations in the propagating direction when a rotation mechanism rotates. The slider controller 40 and the spindle controller 41 of the exposure apparatus 1 are activated, and the then the optical disc begins to be rotated by an AC synchronized motor. Through a condensing device 9, laser beams emitted form the laser source 6 are irradiated on the optical disc for exposure. At this time, the optical disc is eccentrically chucked on the rotation mechanism, resulting a rotational vibration of the whole rotation mechanism. A measurer 17 is used for detecting a propagating component of the rotational vibration, and a vibrator controller 42 controls the vibrator 20 as the output of the measurer 17 approaches zero. Therefore, the vibration in the propagating direction of the base 2 is cancelled, and the propagation accuracy is increased and the exposure quality is enhanced.
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