At the same time, in order to ensure the quality, TAI YEE also has all kinds of measurement  equipments in the factory.  used the ZEISS CMM, Form Talysurf PGI surface profilometer & Mitutoyo circularity instrument...to make sure the precision mold's accuracy and verify the lens parameters via Trioptics HR ,Trioptics OC and controll the lens quality by Trioptics PRO 9 & UMA MTF machine, that's to meet the requirements of our customers.