| 摘要 |
The invention relates to a blocking device and a method for blocking spectacle lenses on block pieces, with a main body, with a block piece mount, arranged on the main body, for the block piece to be attached to the spectacle lens, and with a positioning unit arranged on the main body for aligning and holding the spectacle lens to be blocked, wherein the block piece mount and the positioning unit, which can be fixed on the spectacle lens by means of activation, can be moved relative to one another via a lifting axis, wherein the approaching movement between the positioning unit and the block piece mount in the direction of the lifting axis is limited in at least two positions by an adjustable stop means. |
