Abstract: A method of cleaning a dispenser including a faceplate, comprises emitting light over the surface of the faceplate across the width of the faceplate, measuring an intensity of the light at a plurality of points on the surface of the faceplate after the light has passed over the width, determining, based on the measured light intensity, whether an amount of accumulated formable material on the faceplate is greater than a predetermined value, and in a case that the amount of accumulated formable material is greater than a predetermined value, imparting a suction force on the surface of the faceplate using the vacuum at a distance from the faceplate to remove at least a portion of the accumulated formable material from the surface of the faceplate.

Abstract: A method of cleaning a dispenser including a faceplate, comprises emitting light over the surface of the faceplate across the width of the faceplate, measuring an intensity of the light at a plurality of points on the surface of the faceplate after the light has passed over the width, determining, based on the measured light intensity, whether an amount of accumulated formable material on the faceplate is greater than a predetermined value, and in a case that the amount of accumulated formable material is greater than a predetermined value, imparting a suction force on the surface of the faceplate using the vacuum at a distance from the faceplate to remove at least a portion of the accumulated formable material from the surface of the faceplate.

Abstract: A fluid dispenser calibration system includes a fluid dispenser having a plurality of nozzles, a balance having a balance surface, and a mask positioned between the fluid dispenser and the balance surface. A nozzle pitch is a distance between two adjacent nozzles. The balance measures mass of fluid dispensed from a single nozzle and measures a change in mass on the balance surface. The balance surface has a linear dimension that is greater than the nozzle pitch. The mask includes an aperture and a catch region. The aperture allows fluid dispensed from the single nozzle to impact the balance surface. The catch region catches fluid dispensed from remaining nozzles in the plurality of nozzles.

Abstract: A fluid dispenser calibration system includes a fluid dispenser having a plurality of nozzles, a balance having a balance surface, and a mask positioned between the fluid dispenser and the balance surface. A nozzle pitch is a distance between two adjacent nozzles. The balance measures mass of fluid dispensed from a single nozzle and measures a change in mass on the balance surface. The balance surface has a linear dimension that is greater than the nozzle pitch. The mask includes an aperture and a catch region. The aperture allows fluid dispensed from the single nozzle to impact the balance surface. The catch region catches fluid dispensed from remaining nozzles in the plurality of nozzles.

Abstract: A method and system for manufacturing a contact lens are disclosed involving aligning a male lens mold section and a female lens mold section. A picking head removes a male lens mold section from a male pallet for transfer to a female mold section on a female pallet. The picking head may move substantially freely in a plane perpendicular to the longitudinal axis of the picking head as the distance between the male and female mold sections decreases. Alignment, for example, substantially precise alignment between the male mold section, carried by the picking head, and the female mold section carried by the female pallet may be achieved before the male mold section comes in contact with the female mold section.