Patent ID: 11892366
Assignee: CARL ZEISS VISION INTERNATIONAL GMBH
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  B  H | IPC B  G  H

Claim 17:
18. A system for determining at least one optical parameter of at least one spectacle lens, the system comprising:
at least one camera, wherein the at least one camera is configured to capture at least one image picturing the at least one spectacle lens and to generate at least one signal related to a position of a focus of the at least one camera, and wherein at least one focus of the at least one camera is adjusted to at least one object in space in at least one first distance to the at least one optical lens and in at least one second distance to the at least one camera;
at least one evaluation unit, wherein the at least one evaluation unit is configured to determine at least one optical parameter of the at least one spectacle lens by processing the at least one image and by using the at least one signal related to the position of the focus of the at least one camera, wherein the at least one optical parameter of at least one optical lens is determined by processing the at least one image by further capturing the at least one object in space in the at least one first distance to the at least one optical lens and in the at least one second distance to the at least one camera,
wherein the at least one evaluation unit is further configured to determine the at least one optical parameter of the at least one spectacle lens by using at least one known geometric distortion in the at least one image by using the at least one camera, wherein at least one observed geometric distortion in the at least one image is related to the at least one optical parameter of the at least one spectacle lens by applying a known relationship.