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Beam scanner

  • US 5,097,354 A
  • Filed: 07/27/1990
  • Issued: 03/17/1992
  • Est. Priority Date: 07/27/1989
  • Status: Expired due to Term
First Claim
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1. A beam scanner, comprising:

  • a light-emitting element;

    a lens disposed forwardly of said light emitting element;

    a rocking reflective mirror disposed forwardly of said lens;

    a displacement mechanism for said mirror comprising a dielectric electrode base, a plurality of electrode pairs with one electrode of each electrode pair being located on said dielectric electrode base and the other electrode of each electrode pair being located on the rocking reflective mirror such that each electrode of an electrode pair faces another electrode of the same electrode pair, and a plurality of torsion bars flexibly fixing said mirror in position relative to said dielectric electrode base; and

    means for applying a voltage to selected ones of said electrode pairs to produce static fields across said selected ones of said electrode pairs and a displacement of said mirror.

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