Method and system for high-speed, high-resolution, 3-d imaging of an object at a vision station

Abstract From the Canadian patent

A method and system for high-speed high-, resolution, 3-D imaging of an object at a vision station including an anamorphic magnification and field lens system to deliver the light reflected from the object to a small area position detector having a position-sensing direction. Preferably an acousto-optic deflector having no moving parts together with associated lens elements scans a beam of modulated laser light in a scanning direction across the object to be inspected to produce a telecentric, flat field scan. The deflector has a feedback loop to enable uniform illumination of the object (i.e. flat field correction). The light scattered from the object is collected by a telecentric receiver …