Power modulation of a scanning beam for imaging, therapy, and/or diagnosis
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.
1 Assignment
0 Petitions
Accused Products
Abstract
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 the beam'"'"'s power within 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.
-
Citations
16 Claims
-
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 Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An assembly comprising:
-
a radiation source to generate a beam of radiation, the radiation source including at least one of a therapeutic beam, and a diagnostic beam; 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-power of the beam of radiation 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 reflector is at least part of a medical instrument; 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 Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
Specification