Measurement accuracy is the key demand for both robotics and metrology industries. Noticeable to be taken into consideration is the contribution of the telecentric imaging lens in making sure that there is uniform magnification and the minimum distortion along the edge. A telecentric imaging lens would therefore be a measurement with no errors or lenses that downgrade optical errors. All pictures taken through them will be devoid of perspective distortion, and so measurements taken through them would scale. Telecentric lenses are really ideal for application in those situations where precision would become a paramount necessity, as in AOI systems, they are accurate and repeatable.