×

Power modulation of a scanning beam for imaging, therapy, and/or diagnosis

  • US 8,216,214 B2
  • Filed: 03/12/2007
  • Issued: 07/10/2012
  • Est. Priority Date: 03/12/2007
  • Status: Active Grant
First Claim
Patent Images

1. An assembly comprising:

  • a radiation source to generate a beam of radiation;

    a modulator for modulating the power of the beam of radiation as a function of the position of the beam within a field-of-view to maintain a desired exposure level as the beam scans the field-of-view; and

    a reflector oscillating in a sinusoidal manner to direct the beam of radiation onto a field-of-view as a bi-sinusoidal scan of a target surface within the field-of-view;

    wherein the target surface is assumed to be approximately planar and the modulator continuously modulates the power of the beam according to the function [arcsine(angle)*cos3(angle)]

    1
    to account for a geometric distortion of the spot size of the beam during the bi-sinusoidal scan.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×