A computer-implemented method for establishing the representation of the edge of a spectacle lens or of a left spectacle lens and a right spectacle lens for a spectacle wearer is disclosed. The method includes: providing image data relating to the spectacle wearer with a worn spectacle frame; calculating information data derived from the image data; calculating a deterministically optimizable cost function linking the information data with spectacle lens data, wherein the spectacle lens data describe the spatial extent of at least one spectacle lens held in the spectacle frame; and setting a curve of an edge of the spectacle lens or of the left spectacle lens and the right spectacle lens by optimizing the cost function.

Disclosed is an apparatus and method for processing eyeglass lens which determines the completion of the eyeglass lens processing by using a hall sensor. The eyeglass lens processing apparatus comprises: a grinding wheel mounted frame (22) mounted with a grinding wheel (20) for grinding a lens, and whose position is changed according to a predetermined grinding depth of the lens; a carriage (12) for moving the lens to contact with the grinding wheel (20), and which contacts with the grinding wheel mounted frame (22) when the lens which contacts with the grinding wheel (20) is grinded to the predetermined grinding depth; and a hall sensor detector (30) for detecting a contact of the grinding wheel mounted frame (22) and the carriage (12), wherein the hall sensor detector (30) includes a magnet (32) and a hall sensor (34) for detecting an intensity of a magnetic field generated by the magnet (32), the magnet (32) is equipped on either one of the carriage (12) and the grinding wheel mounted frame (22), and the hall sensor (34) is equipped on the other one of the carriage (12) and the grinding wheel mounted frame (22), in case an output signal of the hall sensor (34) is A when the grinding wheel mounted frame (22) and the carriage (12) are in contacts with each other, if the output signal of the hall sensor (34) is smaller or larger than A by a tolerance, it is determined that the grinding wheel mounted frame (22) and the carriage (12) are in a separated state.

Disclosed is an apparatus and method for processing eyeglass lens which determines the completion of the eyeglass lens processing by using a hall sensor. The eyeglass lens processing apparatus comprises: a grinding wheel mounted frame (22) mounted with a grinding wheel (20) for grinding a lens, and whose position is changed according to a predetermined grinding depth of the lens; a carriage (12) for moving the lens to contact with the grinding wheel (20), and which contacts with the grinding wheel mounted frame (22) when the lens which contacts with the grinding wheel (20) is grinded to the predetermined grinding depth; and a hall sensor detector (30) for detecting a contact of the grinding wheel mounted frame (22) and the carriage (12), wherein the hall sensor detector (30) includes a magnet (32) and a hall sensor (34) for detecting an intensity of a magnetic field generated by the magnet (32), the magnet (32) is equipped on either one of the carriage (12) and the grinding wheel mounted frame (22), and the hall sensor (34) is equipped on the other one of the carriage (12) and the grinding wheel mounted frame (22), in case an output signal of the hall sensor (34) is A when the grinding wheel mounted frame (22) and the carriage (12) are in contacts with each other, if the output signal of the hall sensor (34) is smaller or larger than A by a tolerance, it is determined that the grinding wheel mounted frame (22) and the carriage (12) are in a separated state.

A machine (10) for machining workpieces with optical quality has at least one workpiece spindle (12), which rotatably drives a workpiece (L) to be machines about a workpiece axis of rotation (C). A swivel head (14) located opposite the workpiece spindle, is pivotable about a pivot axis (B), and bears at least two tool spindles (16, 18), each of which rotatably driving at least one machining tool (T1, T2, T3) about a tool axis of rotation (D, D). The workpiece spindle and the swivel head (14) are adjustable relative to one another along three mutually perpendicular linear axes (X, Y, Z). One axis (Y) extends parallel to the pivot axis (B). Another axis (Z) extends parallel to the axis (C) of workpiece rotation. At least one tool spindle is attached to the swivel head with its tool axis of rotation (D) extending parallel to the pivot axis (B).

A machine (10) for machining workpieces with optical quality has at least one workpiece spindle (12), which rotatably drives a workpiece (L) to be machines about a workpiece axis of rotation (C). A swivel head (14) located opposite the workpiece spindle, is pivotable about a pivot axis (B), and bears at least two tool spindles (16, 18), each of which rotatably driving at least one machining tool (T1, T2, T3) about a tool axis of rotation (D, D). The workpiece spindle and the swivel head (14) are adjustable relative to one another along three mutually perpendicular linear axes (X, Y, Z). One axis (Y) extends parallel to the pivot axis (B). Another axis (Z) extends parallel to the axis (C) of workpiece rotation. At least one tool spindle is attached to the swivel head with its tool axis of rotation (D) extending parallel to the pivot axis (B).

There is provided a surfacing station for processing of surfaces of optical elements as workpieces, including a processing unit configured to process surfaces of optical elements; a controller unit configured to communicate with a database containing processing protocols, which can be carried out by the surfacing station, and to control operation of the processing unit in accordance with the processing protocols; and an identification tag base configured to communicate with the controller unit and configured to determine identification tags of consumable items used by the surfacing station, the controller unit being configured to enable a surfacing protocol for processing of the optical elements as workpieces in function of an identified consumable item.

There is provided a surfacing station for processing of surfaces of optical elements as workpieces, including a processing unit configured to process surfaces of optical elements; a controller unit configured to communicate with a database containing processing protocols, which can be carried out by the surfacing station, and to control operation of the processing unit in accordance with the processing protocols; and an identification tag base configured to communicate with the controller unit and configured to determine identification tags of consumable items used by the surfacing station, the controller unit being configured to enable a surfacing protocol for processing of the optical elements as workpieces in function of an identified consumable item.

A polishing device for optical elements includes: a tool shank (1), and a polishing disc base; wherein the tool shank (1) is connected to the polishing disc base and is mounted on a tool shaft of a numerical-controlled processing device; wherein a polishing film (3) is stuck on the polishing disc base; the polishing disc base is a profiling polishing disc base (7), a cylinder polishing disc base (2), a profiling polishing disc base (12) or a spherical polishing disc base (8); wherein the tool shank (1) is independent and universal, thereby reducing the processing cost of the polishing device. A polishing method for optical elements is based on the shapes mentioned above of the polishing disc base, including steps of: fixing a polishing disc connecting rod (11); sticking a polishing film (3); trimming the polishing film (3); and polishing an unprocessed work piece (6).

A polishing machine is described in which a surface treatment tool is moved across the surface of a workpiece in accordance with a predefined tool-path, in order to carry out the desired treatment process. The tool-path is non-periodic and preferably pseudo-random. Various techniques are described for generating data representing the tool-path to be followed. A technique is also described for determining optimum control parameters used to control the polishing machine for a given tool-path. The surface treatment may be a shaping technique in which material is removed from the surface, or a technique for adding material to the surface of the workpiece, or a technique for modifying the surface or a region under the surface of the workpiece.

A polishing machine is described in which a surface treatment tool is moved across the surface of a workpiece in accordance with a predefined tool-path, in order to carry out the desired treatment process. The tool-path is non-periodic and preferably pseudo-random. Various techniques are described for generating data representing the tool-path to be followed. A technique is also described for determining optimum control parameters used to control the polishing machine for a given tool-path. The surface treatment may be a shaping technique in which material is removed from the surface, or a technique for adding material to the surface of the workpiece, or a technique for modifying the surface or a region under the surface of the workpiece.