Device Measures Quality of a Laser Beam and its Illumination Field

Laser line illumination systems may be used for numerous applications including imaging systems in which the laser line is directed toward a light modulator to reflect or transmit specific portions of the illumination field. The modulated light is then directed to an imaging surface. It is desirable that the laser line yield an illumination field that is uniform in peak power, power distribution, and spot size throughout the illumination line. If not, imaging errors result.