LensFC consists of Auto-mode(LensFC-AT) and Manual-mode(LensFC-MT). Both can measure the effective focus Length(EFL) and eccentricity with non-directly contact the tested samples. The sophisticated software can record the data and show directly the testing result in required way, and make the actual measurement simply and efficiency. It would be the good tools to Lens quality before shipping or assembly, as well as the on-line contraction error monitoring for Lens barrel assembly.