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Coating application
With the lens down in the coating application station, the coating pump draws coating material
from the reservoir and pumps it through a filter, up to the surface of the lens. The lens is being
spun during the time of application to ensure a sufficient amount of coating is applied to the
entire surface. After the coating has been applied, the pump will stop and the spin speed of the
lens changes to a new value which will generate the proper film thickness of coating, based
upon the specific coating being used. The timing and spin speeds are controlled by the system
PLC. This process is shown schematically in the following diagram.
Cure process
The 44R is designed to cure Ultra Optics’ line of UV-based coatings. After the lens has
completed the coating application cycle, the lift cylinder will raise the arm assembly, which will
then rotate 90° and then drop down into the curing station. An ultra-violet lamp resides in the
