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Optical scanner with improved scan time

  • US 7,830,575 B2
  • Filed: 04/10/2007
  • Issued: 11/09/2010
  • Est. Priority Date: 04/10/2006
  • Status: Active Grant
First Claim
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1. A method for scanning an object, the method comprising:

  • directing an incident beam through an objective lens and onto an image plane at a beam spot, the objective lens having a lens axis that extends substantially perpendicular to the image plane;

    moving the incident beam around the lens axis of the objective lens so that the beam spot moves along a substantially curved scan pattern on the image plane; and

    providing relative movement between the objective lens and the object, the object moving along the image plane in a linear object direction while the beam spot moves about the image plane in the curved scan pattern to form a two dimensional image of the object, wherein the beam spot moves generally in the object direction for a portion of the curved scan pattern and generally transverse to the object direction for another portion of the curved scan pattern.

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