Inflatable membrane apparatus and process for transferring a coating onto a surface of a lens blank

摘要

An inflatable membrane apparatus (10) comprising (a) a fluid accumulator (11) having an upper and a lower face and a fluid entrance (12), said lower face being partly formed by an inflatable membrane (14), and (b) a trunconical part (15) projecting outwardly from the lower face of the accumulator whose greater base is closed by at least part of the inflatable membrane (14) and smaller base forms a circular opening, whereby, when pressurized fluid is introduced into the accumulator (11), deformation of the inflatable membrane (14) is guided by the trunconical part.

主权项

1. An inflatable membrane apparatus for transferring a transferable coating onto a lens blank, the apparatus comprising:
a fluid accumulator having an upper and a lower face and a fluid entrance, said lower face being partly formed by an inflatable membrane; a trunconical part projecting outwardly from the lower face of the accumulator, wherein the greater base of the trunconical part is closed by the lower face, and wherein the smaller base of the trunconical part forms a circular opening; and a flexible carrier for receiving the transferable coating thereon and configured to be disposed between the inflatable membrane and the lens blank; where the inflatable membrane apparatus is configured such that, as pressurized fluid is introduced into the accumulator, deformation of the inflatable membrane is guided by the trunconical part to urge the transferable coating against the lens blank.