Patent ID: 7158241
Filing Date: 2007-01-02
Classification: B23K,G01J

Abstract:
1. A system for certifying laser beam projection accuracy comprising: a certification fixture having a pattern and a color background; and a projection apparatus configured to project a laser beam having a nominal beam width on the pattern with an accuracy to be determined, wherein the laser beam is reflected from said pattern with a first color and any portion of the laser beam projected onto said fixture but not on said pattern is reflected from said color background and is reflected with a second color different from said first color, and wherein said pattern includes a calibration test pattern for a calibration test of beam width wherein: illumination of said pattern and no illumination of said color background by said laser beam indicates passing the calibration test, and illumination of said color background by said laser beam reflecting said second color contrasting to said first color reflected from said pattern indicates one of: a) a need for iterating the calibration test, and b) failure of the calibration test.