A vacuum suction device has a transfer base, multiple suction heads, a vacuum generator, a pressure balance set, and a first pressure blow set. Each one of the suction heads has at least one channel and a withdraw end. The vacuum generator is connected with a vacuum circuit electromagnetic valve. The first end of the pressure balance set is connected with the channel of each suction head. The second pressure blow set is connected with the third pipe and has a second pressure blow electromagnetic valve, a pressure regulator, and a pressure source. The first pressure blow set is connected to the fourth pipe and has a pressure blow electromagnetic valve and a pressure source.

A gripper system comprises: a gripper shaft; a vacuum source; a first valve arranged between the vacuum source and the suction tube; a liquid reservoir; a source of pressurized gas; a second valve arranged between the source of pressurized gas and the suction tube or the liquid reservoir; a control unit for controlling the first valve and the second valve such that: for picking the ophthalmic lens up, suction is supplied to the suction tube; during transporting the ophthalmic lens, the suction tube is filled with liquid from the liquid supply tube; for releasing the ophthalmic lens from the gripper head, liquid is pressed through the fluid channel and through the suction opening of the gripper head.

A vacuum suction device has a transfer base, multiple suction heads, a vacuum generator, a pressure balance set, and a first pressure blow set. Each one of the suction heads has at least one channel and a withdraw end. The vacuum generator is connected with a vacuum circuit electromagnetic valve. The first end of the pressure balance set is connected with the channel of each suction head. The second pressure blow set is connected with the third pipe and has a second pressure blow electromagnetic valve, a pressure regulator, and a pressure source. The first pressure blow set is connected to the fourth pipe and has a pressure blow electromagnetic valve and a pressure source.

The invention provides a method producing contact lenses, including the step of: holding the molded silicone hydrogel contact lens attached to the one of the female mold half or the male mold half with a vacuum supplied with a suction cup; deforming a surface of the one of the female mold half or the male mold half having the molded silicone hydrogel contact lens attached to with a pin so as to separate the molded silicone hydrogel contact lens from the mold half attached to and to transfer the molded silicone hydrogel contact lens to the suction cup; moving the suction cup away from the pin while the suction cup continues to hold the molded silicone hydrogel contact lens remains; applying a compressed gas to blow the molded silicone hydrogel contact lens away from the suction cup into a container.

In a method of handling an ophthalmic lens contained in an inspection cuvette and immersed in an inspection liquid the lens is arranged at an actual position relative to a concave inner surface of a bottom glass of the inspection cuvette;

The method comprises the steps of: positioning the inspection cuvette in a handling position without pivoting the inspection cuvette; through the viewing glass obtaining an image of the lens; from the obtained image determining a deviation of the actual position of the lens from a set transfer position; comparing the deviation with a predetermined maximum deviation; determining that the lens is arranged at a proper transfer position when the deviation is less than the maximum deviation, in case of the proper transfer position, transferring the lens from the inspection cuvette to the primary packaging container.

An automated production line for the production of ophthalmic lenses comprises: a production line front end (1) comprising: a first injection-molding machine (10) and a second injection-molding machine (12) a casting module (14) comprising a filling station (144) and a capping station (145); a stacking module (15) and a curing module (16); a destacking module (17) and a demolding and delensing module a production line back end (2) comprising: an inspection module (21);
Wherein the inspection module comprising a rail system in which self-driving shuttles carrying the inspection cuvettes are arranged on a closed-loop rail, wherein the rail system can be adapted to the available space in the production plant/hall using curves and straight portions in the manner known from a model railway.

An automated production line for the production of ophthalmic lenses comprises: a production line front end (1) comprising: a first injection-molding machine (10) and a second injection-molding machine (12) a casting module (14) comprising a filling station (144) and a capping station (145); a stacking module (15) and a curing module (16); a destacking module (17) and a demolding and delensing module a production line back end (2) comprising: an inspection module (21);
Wherein the inspection module comprising a rail system in which self-driving shuttles carrying the inspection cuvettes are arranged on a closed-loop rail, wherein the rail system can be adapted to the available space in the production plant/hall using curves and straight portions in the manner known from a model railway.

A lens clamping device, relating to the field of optical communication devices, comprises: a base; a sliding mechanism slidably connected with the base and movable relative to the base along a first direction; a transmission mechanism connected with the sliding mechanism and having a first and a second clamping member capable of relatively away from and close to each other along a second direction perpendicular to the first direction; and a suction nozzle fixedly connected to one end of the sliding mechanism along the first direction and used for sucking a lens; wherein the suction nozzle is between the first and second clamping member which are relatively close to each other to limit the displacement of the lens in the second direction. The lens clamping device improves the reliability of picking up the lens by means of limit in two directions.

An automated production line for the production of ophthalmic lenses comprises: a production line front end comprising: a first and a second injection-molding machine, a casting module, a filling station and a capping station, a stacking module and a curing module, a destacking module and a demolding and delensing module a production line back end comprising: a treatment module, an inspection module,
wherein self-driving shuttles in the inspection module can form a queue and act as a buffer for the primary packaging module if an interruption of the primary packaging module and variations of the cycle time in the primary packaging module are buffered so that the extraction module is able to operate largely independently from the upstream and downstream components of the manufacturing line.