US 11,866,818 B2
Vapor deposition method for coating a spectacle lens, physical vapor deposition system and crucible for physical vapor deposition
Artur Laukart, Aalen (DE)
Assigned to Carl Zeiss Vision International GmbH, Aalen (DE)
Filed by Carl Zeiss Vision International GmbH, Aalen (DE)
Filed on May 2, 2023, as Appl. No. 18/310,619.
Application 18/310,619 is a continuation of application No. PCT/EP2022/054807, filed on Feb. 25, 2022.
Claims priority of application No. 21160061 (EP), filed on Mar. 1, 2021.
Prior Publication US 2023/0265553 A1, Aug. 24, 2023
Int. Cl. C23C 14/24 (2006.01); C23C 14/30 (2006.01)
CPC C23C 14/30 (2013.01) [C23C 14/243 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of physical vapor deposition for coating an optical surface of a spectacle lens, the method comprising:
providing a crucible containing a first evaporation material and a second evaporation material,
wherein the first evaporation material has a first vapor pressure and the second evaporation material has a second vapor pressure different from the first vapor pressure; and
concurrent evaporation of the first evaporation material and the second evaporation material from a same crucible,
wherein a ratio of an exposed surface of the first evaporation material and an exposed surface of the second evaporation material at a surface of the crucible is adapted to counterbalance a difference in vapor pressure between the first and the second evaporation material.