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.

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 system for monitoring the position of a blocking device on an ophthalmic lens (20) having at least one marking comprises: a mechanical structure adapted to cooperate with the blocking device; an image sensor (4) observing the ophthalmic lens (20); a control unit (10) connected to the image sensor (4) and configured to produce an image having a point of reference with a determined position with respect to the mechanical structure and at least part of the ophthalmic lens (20) including said marking; and a user interface (12) adapted to display a blocking device positional compensation proposal for an automatic positional compensation or for a manual positional compensation based on the comparison to a predetermined threshold of a distance between the point of reference and the marking on the image. A corresponding method and a method for edging an ophthalmic lens are also proposed.

A block piece (1) for blocking a lens (2), in particular an eyeglass lens, by means of a block material (3), wherein the block piece (1) has a bottom part (4) for holding the block piece (1) and an upper part (5) for a fastening of the lens (2) for processing and/or coating of an optically active surface of the lens (2). Additionally, the block piece (1) is used in a method for blocking a lens (2), in particular an eyeglass lens, and the bottom part (4) and multiple upper parts (5) for blocking a lens (2) provided as part of a kit.

An application device is configured to clean grinding surfaces in a machine for grinding ophthalmic lenses, the application device including: a central portion having so as to mount the application device in the grinding machine; and a peripheral edge configured to receive an application surface to cooperate with the grinding surface of the grinding wheel so as to clean the grinding surface. It also relates to a cleaning kit including an application device and a cleaning solution, and to a method for cleaning grinding surfaces.

A device and a method for processing, in particular edge processing, an optical lens, wherein the device has a measuring system, a processing system, a loading system, an unloading system, an intermediate conveyor, and a belt conveyor. The loading system is arranged between the measuring system and the processing system. The unloading system is arranged on the opposite side of the processing system. A lens that is to be processed is picked up and oriented at the optical reference point that is determined by the measuring system in order to determine as precisely as possible the blocking point for the subsequent processing. The loading system and unloading system each have a linearly movable swiveling system with linearly movable suction devices arranged therein. The processing system is designed for the simultaneous processing of two lenses.

A cooling lubricant supply device for supply of a cooling lubricant to a grinding wheel is rotatably mounted as a tool on a grinding spindle of a processing unit in a grinding machine. The device has a feed shoe, which is mounted at least indirectly on a grinding spindle housing and seated on a circumferential surface of the grinding wheel and which has a seating surface facing the grinding wheel. The seating surface has a shape substantially complementary with the circumferential surface of the grinding wheel and is provided centrally with a pocket-like recess into which the cooling lubricant can be fed under pressure. A spring mechanism is provided, by which the feed shoe is biased with the seating surface thereof against the circumferential surface of the grinding wheel.

The invention concerns an optical lens comprising (i) a temporary coating at least partially covering a surface of the lens, said temporary coating comprising an outermost layer mechanically degradable through friction and/or contact; (ii) a removable film having opposite first side and second sides which adhere to said outermost layer through its first side, whereinthe first side of the film has a roughness Rq lower than 750 nm and the first side of the film has a surface energy lower than 38 mJ/m.sup.2.

Provided is a block device that mounts a lens shape processing lens holder to a convex surface of a spectacle lens with two alignment reference marks for identifying a distance portion design reference point on a concave surface. The block device includes an imaging unit that images the alignment reference marks of the spectacle lens supported by a support unit from a convex surface side of the spectacle lens, an information processing unit that obtains expected imaged positions of the alignment reference marks imaged by the imaging unit, using information regarding the spectacle lens, when a posture of the spectacle lens supported by the support unit becomes a reference posture suitable for mounting the lens holder, and a display control unit that displays images of index marks indicating the expected imaged positions obtained in the information processing unit and images of the alignment reference marks.

A device and a method for processing, in particular edge processing, an optical lens, wherein the device has a measuring system, a processing system, a loading system, an unloading system, an intermediate conveyor, and a belt conveyor. The loading system is arranged between the measuring system and the processing system. The unloading system is arranged on the opposite side of the processing system. A lens that is to be processed is picked up and oriented at the optical reference point that is determined by the measuring system in order to determine as precisely as possible the blocking point for the subsequent processing. The loading system and unloading system each have a linearly movable swiveling system with linearly movable suction devices arranged therein. The processing system is designed for the simultaneous processing of two lenses.