Patent ID: 6171462
Filing Date: 2001-01-09
Classification: C23C

Abstract:
A device for holding lenses to be coated in a vacuum coating machine or sputtering machine, comprising a substrate holder having cap-shaped sheet-steel blanks forming a dish in the form of a spherical segment and having a plurality of drill-holes, wherein the substrate holder is rotatable around a vertical axis (R), for mounting in the vacuum chamber above a coating source (Q), the coating source (Q) being mounted to a side of the axis of rotation (R) and the drill-holes receiving the lenses to be held and centered in the drill-holes during vacuum coating, wherein the drill-holes are to enclose and center rotatable cylindrical rims of the lenses each being oriented towards the coating source (Q) when the lenses are mounted in said device, the mean perpendicular (M) of a respective drill-hole longitudinal axis (A) intersecting the axis of rotation (R) of the substrate holder at a point that lies halfway between two points that are the points of intersection (C,F) of the mean perpendiculars (M',M"") of two notional drill-holes of the same drill-hole pitch circle (T) with the axis of rotation (R), whose drill-hole longitudinal axes (A',A"") intersect the coating source (Q), one notional drill-hole having the largest and the other notional drill-hole the shortest distance from the coating source (Q).