Patent ID: 8647710

Claim:
A method for production of a substrate having a patterned optical coating on a curved surface, comprising: applying a masking to cover a sub-area of the curved surface, wherein applying the masking comprises applying a first masking and second masking, the second masking partially overlapping the first masking, wherein the first masking defines structured contours and the second masking covers an uncovered sub-area enclosed by the structured contours, wherein applying the masking further comprises printing a varnish layer as the first masking by a computer controlled print head and readjusting a distance between the print head and the curved surface to produce the structured contours, and wherein the method for applying the first masking differs from the method for applying the second masking; applying an optical coating to the masking and the curved surface using a vacuum deposition method, wherein only an area of the sub-area is printed in order to produce the first masking, which is used to produce clear contours of the optical coating, and wherein the second masking overlaps the first masking, said first masking being precisely structured and having sharp, well defined edges, the second masking being coarser than the first masking; and removing the masking from the sub-area.