Abstract:
The invention relates to a ring comprising a hoop (1, 20) for draining and encircling the edge of the optical element, which forms an arc of more than 180 degrees and which is equipped with an outward-facing drainage nozzle (10, 30) at each of the two ends thereof.
Abstract:
The ring has a hoop (1) that has an opening through which the ring is clipped on an optical lens on which a coating is to be deposited. The hoop forms an arc of more than 180 degrees, and has two draining mouths (10) at its respective ends. The hoop has an inner face (2) connected with an edge of the optical lens, and longitudinal ridge endings (3, 4, 5) forming circular arcs to canalize flow of coating material.