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Rotational flexure stage

  • US 5,083,757 A
  • Filed: 07/05/1990
  • Issued: 01/28/1992
  • Est. Priority Date: 07/05/1990
  • Status: Expired due to Fees
First Claim
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1. A unitary flexure stage permitting essentially lossless relative small angle rotation around a central axis, said stage comprising a body of elastic material having therein:

  • three pairs of parallel slots defining three links extending radially with respect to said axis from respective points of attachment to a central portion of said body;

    cylindrical bores at each end of each of the slots of said pairs, the adjacent bores at corresponding ends of each pair being closely adjacent thereby providing a necked down region at the respective end of the link establishing a compliant region;

    located radially outwardly from each pair of slots in an outer, annular portion of said body, a respective relief slot, said relief slot extending transversely of the respective pair of radial slots and closely adjacent the respective pair of bores at substantially radially outer ends of said slots thereby to provide radial compliance for the respective link; and

    peripheral slot segments separating said central portion from said outer annular portion between said links.

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