Disclosed is a lens blocker for attaching a leap block to a machining center of a blank lens to be machined in order to craft an eyeglass lens. The lens blocker comprises: a drive cam (30) of a cylindrical shape having a blocker arm guide groove (32) formed therein; a blocker arm (40) coupled to the drive cam (30) to be movable up and down along the drive cam (30) or to be rotatable about the drive cam (30), and having a blocker arm guide (42) formed at one end thereof, wherein the blocker arm guide (42) is inserted into the blocker arm guide groove (32) of the drive cam 30 and moves along the blocker arm guide groove (32), so as to cause the blocker arm (40) to move up and down along the drive cam (30) or to rotate about the drive cam (30); a leap block mount (50), to which a leap block to be attached to a blank lens is mounted and which is coupled to the other end of the blocker arm (40); a blocker arm base (60) configured to move the blocker arm (40) up and down along the drive cam (30); and a lens mount (70) onto which the blank lens, to which the leap block is to be attached, is mounted.

A compensating pad for applying to an ophthalmic lens blank to be blocked, or for interposing between an ophthalmic lens blank and a block piece. The compensating pad comprises a main body that is designed to be elastic having a maximum thickness corresponding to a maximum layer thickness difference of the ophthalmic lens blank, in order to locally compensate for the layer thickness difference of the blocked ophthalmic lens blank.

A compensating pad for applying to an ophthalmic lens blank to be blocked, or for interposing between an ophthalmic lens blank and a block piece. The compensating pad comprises a main body that is designed to be elastic having a maximum thickness corresponding to a maximum layer thickness difference of the ophthalmic lens blank, in order to locally compensate for the layer thickness difference of the blocked ophthalmic lens blank.

The invention concerns a method for producing an optical article suitable for edging comprising an antifouling layer on which there is deposited a temporary overlayer for assisting with edging, comprising: depositing, on an optical substrate, an organic antifouling layer comprising at least a fluorinated polymer compound comprising hydrolysable functions; and depositing, on the antifouling layer, an overlayer for assisting with edging, of mineral nature, comprising one or more metal fluorides and/or one or more metal oxides or hydroxides; method characterised in that it further comprises a step of accelerated grafting of the antifouling layer chosen from: (a) a treatment of the deposited antifouling layer in a humid atmosphere of the deposited antifouling layer and (b) a catalytic treatment in the acidic or basic vapour phase of the deposited antifouling layer.

The invention concerns a method for producing an optical article suitable for edging comprising an antifouling layer on which there is deposited a temporary overlayer for assisting with edging, comprising: depositing, on an optical substrate, an organic antifouling layer comprising at least a fluorinated polymer compound comprising hydrolysable functions; and depositing, on the antifouling layer, an overlayer for assisting with edging, of mineral nature, comprising one or more metal fluorides and/or one or more metal oxides or hydroxides; method characterised in that it further comprises a step of accelerated grafting of the antifouling layer chosen from: (a) a treatment of the deposited antifouling layer in a humid atmosphere of the deposited antifouling layer and (b) a catalytic treatment in the acidic or basic vapour phase of the deposited antifouling layer.

Implementations of a system for the manufacture of eyeglasses is disclosed. The system includes a lens-mounting block, a lens blank coupled to the lens-mounting block, a lens coupled to the lens blank, and an edger. The edger follows a perimeter of the lens-mounting block to edge a perimeter of the lens. The lens blank detaches from the lens-mounting block after the lens is edged.

A method and associated implementing system eliminates much of the stress presently introduced by the bonding of ophthalmic lens blanks, or blanks to a holding device, namely a metal block. The method of attaching ophthalmic lens blanks to a blocking assembly comprises the steps of shaping a blocking assembly to take the shape of an ophthalmic lens blank surface of an ophthalmic lens, wherein the blocking assembly is not attached directly to the ophthalmic lens blank during shaping of the blocking assembly; and following the shaping of the blocking assembly, attaching the lens blank to the shaped blocking assembly.

A method is provided to minimize travel distance and time between correction locations on a substrate when polishing a local area of a substrate, such as a semiconductor wafer, using a location specific polishing module. A correction profile is determined and a recipe based on the correction profile is used to polish a substrate. A polishing pad assembly traverses between a first correction location and a second correction location using the combined motion of a substrate support chuck and a support arm coupled at a first end thereof to the polishing pad assembly. The chuck rotates about a center axis thereof. The positioning arm may sweep about a vertical axis disposed through a second end of the support arm. The combined motion of the chuck and the positioning arm causes the polishing pad assembly to form a spiral shaped polishing path on the substrate.

A method is provided to minimize travel distance and time between correction locations on a substrate when polishing a local area of a substrate, such as a semiconductor wafer, using a location specific polishing module. A correction profile is determined and a recipe based on the correction profile is used to polish a substrate. A polishing pad assembly traverses between a first correction location and a second correction location using the combined motion of a substrate support chuck and a support arm coupled at a first end thereof to the polishing pad assembly. The chuck rotates about a center axis thereof. The positioning arm may sweep about a vertical axis disposed through a second end of the support arm. The combined motion of the chuck and the positioning arm causes the polishing pad assembly to form a spiral shaped polishing path on the substrate.

A method of preparing a lens blank for a further operation of surfacing to transform the lens blank into a surfaced lens for further transformation into a lens having a lens shape, the operation of surfacing including processing the lens blank so that the surfaced lens exhibits a crib diameter, the method being implemented using a processing module and comprising: based on input data (ID) which define the lens shape, defining a temporary crib diameter (D.sub.temp) so that said temporary crib diameter satisfies a set of constraints which includes at least: a first constraint whereby the temporary crib diameter (D.sub.temp) is large enough for the surfaced lens having said temporary crib diameter to be suitable to be processed into said lens, a second constraint whereby the temporary crib diameter is large enough for the surfaced lens having said temporary crib diameter to include a plurality of reference points defined on the lens blank and which together identify an optical center of the lens, choosing the crib diameter as a function of the temporary crib diameter (D.sub.temp), said choosing the crib diameter being configured so that, when a step cribbing configuration is destined to be applied to the operation of surfacing, said crib diameter is chosen among at least one predetermined discrete value (Val.sub.i).