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Light beam shaping arrangement and method in electro-optical readers

  • US 7,007,843 B2
  • Filed: 06/09/2003
  • Issued: 03/07/2006
  • Est. Priority Date: 06/09/2003
  • Status: Expired due to Fees
First Claim
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1. A beam shaping arrangement, comprising:

  • a) a light source for emitting a light beam along an optical axis, the light beam having a cross-section in a plane perpendicular to the optical axis;

    b) a drive for scanning a target;

    c) a deformable, micro-electro-mechanical system (MEMS) mirror located between the light source and the drive for reflecting the light beam along an optical path toward the drive as a reflected beam having a cross-section in a plane perpendicular to the optical path; and

    d) means for changing the cross-section of the reflected beam to be different from the cross-section of the light beam emitted by the source by deforming the MEMS mirror between curved configurations, thereby enabling the drive to scan the target with the reflected beam of different cross-section.

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