Hoya insight on optical lens manufacturing 

^{Keith Elliott}

Hoya regional sales manager for the North Keith Elliott delivered a keynote lecture about the optical lens manufacturing process on the OSA stand at 100% Optical on February 24-26.

Elliott highlighted some key issues associated with matching new lenses with existing prescriptions, frame selection, glazing rimless frames, making semi-finished lenses and the polymerisation and curing process.

He also discussed the stages of manufacturing optimum lenses, including preparing the lenses for processing with labelling and marking up, taping for protection and blocking with cadmium-free alloy or wax.

‘Then the real work begins in taking away the bulk of the unwanted lenses known as cribbing, moving to the finer processes of surface generation, often with dual surface optimisation,’ he said.