Method of preparing an ophthalmic lens fitted with a memory mark

摘要

A method of preparing an ophthalmic lens (20) for mounting in an eyeglass frame, the ophthalmic lens including a memory mark (28) that is situated on one of its ophthalmic faces (22) and that forms a code storing in digital form at least one item of information relating to a mechanical, geometrical, or optical characteristic of the ophthalmic lens. The method includes three steps:
a) acquiring a raw image of at least a portion of the optical face of the ophthalmic lens on which an image of the memory mark appears;b) processing the raw image acquired in step a) in order to decode the information stored in the code; andc) centering and then shaping the ophthalmic lens as a function of the information decoded in step b).

主权项

1. A method of preparing an ophthalmic lens (20) for mounting in an eyeglass frame (10), comprising the steps of:
preparing the ophthalmic lens for a client; marking the ophthalmic lens with centering marks (24, 27); marking an optical face (22) of the ophthalmic lens with a visible memory mark (28) comprised of a code that stores, in digital form, information of geometrical and optical characteristics of the prepared ophthalmic lens; capturing a raw image of at least a portion of said optical face (22) of the ophthalmic lens (20), said raw image including an image of said memory mark (28) and of the centering marks (24, 27) of the ophthalmic lens (20), said memory mark being separate and distinct from said centering marks, said memory mark storing numerical information in non-numerical form; decoding the information stored in the code of the memory mark by processing the acquired raw image; and centering the ophthalmic lens (20) as a function of the position of said centering marks (24, 27) on the raw image, and shaping said ophthalmic lens (20) as a function of the decoded information from the code of the memory mark.