Patent ID: 7632432
Filing Date: 2009-12-15
Classification: B29C,B29D,B29K,B29L

Abstract:
1. A process for forming at least one coating layer on a toric surface of an optical article which comprises: providing an optical article having a toric surface comprising a first principal meridian with a lower radius of curvature r and a second principal meridian with a higher radius of curvature R (r>R) and a periphery; depositing on said toric surface of the optical article a pre-measured amount of a liquid curable composition; applying pressure on said pre-measured amount of liquid curable composition to cause said liquid curable composition to spread over the toric surface of the optical article; curing the liquid curable composition; and recovering an optical article coated with at least one coating layer; wherein, the liquid curable composition deposition step comprises depositing on the toric surface at least two drops of the liquid curable composition, each within one of two opposite sectors centered on the first principal meridian of lower radius of curvature r and having an apex angle up to 40°.