An internal lighting system on a low-profile conveyor projects a light field through a translucent belt to illuminate the appearance and profiles of parts on the belt for automatic or manual inspections. Internal light sources on the AccuVision Internal Backlit Conveyor from Conveyor Technologies Ltd., Milford, Ohio (conveyortechltd.com) is rated for 16,000 hours and comes in three light tones: warm white, cool white, and daylight. Color rendering (index of 82+) is compatible with high-speed digital cameras when used with electronic high-frequency ballasts. The light source comes with isolation mounts to dampen vibration, and bulbs are easily replaced after belt removal. Light fields come in five lengths from 7 to 32 in. Field widths are customized using multiple banks of lights. Belt widths range from 2.5 to 24 in., all with a thickness of 2.28 in.

Conveyors have either fixed speed, variable speed, or indexing drives with controllable accel/decel and index, or a secondary speed selection. Single piece steel frames have aluminum extruded sides with dual tee-slots for attaching auxiliary devices. Bearings are sealed-for-life.