Australia & New Zealand (03) 9540 5100

Contact lens measurement

Contact lens manufacturers conduct various material tests on clear, flexible polymer samples to ensure better quality. During the test, the material samples are submerged in a saline solution for hydration. Measuring dimensions inside a saline solution when the material is stretched or heated is a very challenging task. To perform this type of measurement effectively, non-contact sensors are preferred.

Bestech Australia provides special non-contact sensors to give accurate dimensional measurements. ThruBeam model ODC2600-40 sensors are used for this purpose with a dynamically adjustable threshold that allows the user to fine-tune the sensor enabling it to see the polymer sample’s edges with optimum clarity. A curtain of LED light is transmitted through the sample kept in the saline water enclosure and the segment mode of the sensor allows for a very distinguishing view between the enclosure walls, saline bath, and test sample edges. This ensor technology is ideal for usage in high-speed applications.