Scanning beam device calibration

An article of manufacture comprising:

• a machine-accessible medium that provides instructions that if executed result in a machine performing operations including,
• comparing an image of a calibration pattern, which has been acquired with a scanning beam device, with a representation of the calibration pattern;
• and
• calibrating the scanning beam device based on the comparison.

An apparatus comprising:

• a light source;
• a scanning optical element to receive light from the light source, the scanning optical element to scan a beam over a calibration pattern in a scan pattern;
• a photodetector to detect light backscattered from the calibration pattern at different times during the scan pattern;
• image generation logic to generate an image of the calibration pattern by representing the backscattered light detected at each of the different times at a corresponding expected position of the beam for a respective time;
• and
• comparison logic to compare the image with a representation of the calibration pattern.