Invention Grant
US08446672B2 Vibration reduction apparatus with a center of gravity adjusting member to reduce detection errors and optical apparatus 有权
具有重心调节构件的减振装置,以减少检测误差和光学装置

  • Patent Title: Vibration reduction apparatus with a center of gravity adjusting member to reduce detection errors and optical apparatus
  • Patent Title (中): 具有重心调节构件的减振装置,以减少检测误差和光学装置
  • Application No.: US12450679
    Application Date: 2008-03-28
  • Publication No.: US08446672B2
    Publication Date: 2013-05-21
  • Inventor: Junichi Omi
  • Applicant: Junichi Omi
  • Applicant Address: JP Tokyo
  • Assignee: Nikon Corporation
  • Current Assignee: Nikon Corporation
  • Current Assignee Address: JP Tokyo
  • Priority: JP2007-101578 20070409
  • International Application: PCT/JP2008/056096 WO 20080328
  • International Announcement: WO2008/126702 WO 20081023
  • Main IPC: G02B27/64
  • IPC: G02B27/64
Vibration reduction apparatus with a center of gravity adjusting member to reduce detection errors and optical apparatus
Abstract:
A vibration reduction apparatus to stably control the driving of a vibration reduction optical system. A vibration reduction apparatus 30 has a fixed portion 31, a moving portion 25, 32, 34-1, 35-1 having a vibration reduction optical system 25 and moves in a plane perpendicular to an optical axis, relatively with respect to the fixed portion, a first detection portion 35 detects relative movement in a first direction D1 of the moving portion and the fixed portion, a second detection portion detects relative movement in a second direction D2 of the moving portion and the fixed portion, and a center of gravity adjusting member 36 disposed at the moving portion such that a center of gravity position G1 of the moving portion can be brought close to a crossing point C of each detection direction of the first detection portion and the second detection portion.
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