Patent 7090670 was granted and assigned to Reliant Technologies on August, 2006 by the United States Patent and Trademark Office.
An array of light beams is swept along a main scan direction and dithered in a sub-scan direction to generate a treatment pattern of spots. The array is elongated along the sub-scan direction and the dithering has a travel that is significantly less than the length of the array in the sub-scan direction.