Patent ID: 11874528
Assignee: CARL ZEISS VISION INTERNATIONAL GMBH
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC G  B | IPC B  G

Claim 6:
7. A marking device for applying a first optical mark to a first spectacle lens and a second optical mark to a second spectacle lens mounted in a spectacle frame, the marking device comprising:
a support element for adjustably arranging the spectacle frame in the marking device;
an image capturing unit for capturing an image of at least such parts of the spectacle frame enclosing the first spectacle lens and the second spectacle lens mounted in the spectacle frame;
a marking appliance for applying the first optical mark to the first spectacle lens and a second optical mark to the second spectacle lens at a respective position intersecting with an actuation axis of the marking appliance; and
a control unit configured to:
capture the image of the at least parts of the spectacle frame enclosing the first spectacle lens and the second spectacle lens mounted in the spectacle frame with the image capturing unit;
determine an intended position of the first optical mark at the spectacle lens including evaluating the image captured by the image capturing unit;
control the support element to arrange the spectacle frame such that the actuation axis of the marking appliance intersects with the spectacle lens at the intended position of the first optical mark;
determine one or more of the following parameters: a center axis of the spectacle frame and a center point of the spectacle frame;
determine an intended position of the second optical mark at the second spectacle lens based on the position of the first optical mark at the first spectacle lens and based on at least one of the center axis of the spectacle frame and the center point of the spectacle frame; and
adjust the relative position of the spectacle frame and the marking appliance such that the actuation axis of the marking appliance intersects with the second spectacle lens at the intended position of the second optical mark.