Non-Contact Center Thickness Control CTC-500
July 15, 2015
Currently in optical industry, the inspection of lens center thickness is included in international standards. Unfortunately, while tested randomly on the market, lenses from some factories often cannot meet the standard, especially those myopic lenses. The primary reason causing this problem is that most measuring instruments currently available for center thickness examination have to contact the lens to obtain results, which would easily scratch the lens. Thus, instead of checking every single lens, manufacturers are only able to exam them randomly, which further leads to those failure in random tests carried out by Bureau of Quality and Technical Supervision. The Non-Contact Center Thickness Control CTC-500 we published lately is based on the principal of white light interferometer, scanning the lens thickness without any contact. Its accuracy of measurement is able to reach 0.005mm and it will be an effective quality control tool for lens manufacturers.
