| abstract |
A method for labelling an identification mark (62, 70) on a lens (64) for inventory control. The identification mark (62, 70) is placed onto the facing inside surface (52) of a mold (50) by an ink jet printer and is remained there when the lens-forming liquid is cured. Once the lens (64) is formed, but before the demolding, the identification mark (62, 70) is transferred from the mold (50) to the lens (64). The identification mark (62, 70) contains information identifying properties of the lens (64) such as the power of the lens and can be used for inventory control. |