Flicker mitigation for multiple interspersed illumination systems

An apparatus for reading symbology, comprising:

• a housing;
• an imaging sensor;
• an illumination assembly, the illumination assembly including a first illumination source and a second illumination source, the first illumination source being configured to illuminate an illumination target with visible light, and the second illumination source being configured to illuminate the illumination target with non-visible light;
• and
• a controller configured to:
• cause the imaging sensor to operate at a predetermined framerate where each frame includes an exposure period over which the imaging sensor is active to capture image data and a non-exposure period over which the imaging sensor is not active to capture image data;
• and
• (a) during a first frame, cause the first illumination source to activate over at least a portion of the respective exposure period and activating the second illumination source over at least a portion of the respective non-exposure period such that the first illumination source is not activated at the same time as the second illumination source;
• and
• (b) during a second frame, cause the second illumination source to activate over at least a portion of the respective exposure period and cause the first illumination source to activate over at least a portion of the respective non-exposure period such that the first illumination source is not activated at the same time as the second illumination source.