| 摘要 |
In a device for holding lenses for eye glasses to be coated (3,3',...) with a substrate holder (4) consisting of cap-like sheet-metal blanks (4a,b,c,d) forming a dish in the form of a spherical segment and having several drill-holes (5,5',...), rotating on a vertical axis (R) in the vacuum chamber (2) above a coating source (Q), the coating source (Q) being mounted to the side of the axis of rotation (R) and the lenses (3,3',...) being placed and held in the drill-holes (5,5',...), the mean perpendicular (M) of the respective drill-hole longitudinal axis (A) intersects the axis of rotation (R) of the substrate holder (4) at a point (O) roughly halfway between the two locations which 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), the one notional drill-hole however having the largest and the other notional drill-hole having the shortest distance from the coating source (Q).
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