"Kowa's TC series is short for Telecentric. Telecentric lenses have very low distortion. They produce high contrast and resolution in both the center and corners.
In a telecentric optical system, there is no change in magnification when focusing, and magnification is constant over working distances. Thus, the movement of an object does not change the magnification. Therefore, it is suitable for measuring objects with high accuracy."
In a telecentric optical system, there is no change in magnification when focusing, and magnification is constant over working distances. Thus, the movement of an object does not change the magnification. Therefore, it is suitable for measuring objects with high accuracy."