Method and apparatus for imaging three-dimensional structure

  • US 8,638,447 B2
  • Filed: 09/14/2012
  • Issued: 01/28/2014
  • Est. Priority Date: 08/05/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. An apparatus for imaging at least a portion of a patient'"'"'s dentition, the apparatus comprising:

  • an illumination unit configured to transmit a parent light beam comprising a first wavelength component and a second wavelength component;

    an optical system configured to generate an illuminated region on a portion of a patient'"'"'s dentition, wherein the first wavelength component is focused at a first focal plane and the second wavelength component is focused at a second focal plane;

    a translation mechanism configured to move the position of the first focal plane and the second focal plane at the same time over a range of focal plane positions;

    a detector unit configured to measure intensity of returned light beams of the first wavelength component and the second wavelength component; and

    a processor coupled to the detector unit and configured to determine a surface topology of the patient'"'"'s dentition based at least in part on a first intensity of a first returned light beam of the first wavelength component and a second intensity of a second returned light beam of the second wavelength component.

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