Patent ID: 6355124
Filing Date: 2002-03-12
Classification: B29D,Y10T

Abstract:
A method for the lamination of two lens blanks to form an ophthalmic lens comprising:a) placing a first ophthalmic lens blanks having two major surfaces thereon on a first lens blank support surface and placing a second ophthalmic lens blank having two major surfaces thereon on a second lens blank support surface; b) applying a hardenable liquid adhesive to less than an entire one of said at least two major surfaces of said first ophthalmic lens blank while the first ophthalmic lens blank is on said first lens blank support surface; c) removing the second ophthalmic lens blank from the second lens blank support surface and placing the second ophthalmic lens blank into contact with the hardenable liquid adhesive, forming an association of two lens blanks with the hardenable liquid adhesive between the two lens blanks; d) spreading the hardenable liquid adhesive; and e) after at least some of said hardenable liquid adhesive has spread, hardening said hardenable liquid adhesive to laminate the two lens blanks into a laminated ophthalmic lens, wherein both the first lens blank support surface and the second lens blank support surface are each recessed areas on a carriage element, so that as said carriage element moves, both the first lens blank support surface and the second lens blank support surface move, after the first ophthalmic lens blank has been placed on the first lens blank support surface, the carriage is moved to a first position where hardenable liquid adhesive is applied to the first ophthalmic lens blank and then the carriage is moved to a second position where the second ophthalmic lens blank is placed into contact with the hardenable liquid adhesive on the first ophthalmic lens blank, the second ophthalmic lens blank is placed into contact with the hardenable liquid adhesive by lifting the second ophthalmic lens blank from the second ophthalmic lens blank support surface to a stationary elevated position and then moving the carriage to a position where the first ophthalmic lens blank with hardenable liquid adhesive thereon is under the stationary elevated position of the second ophthalmic lens blank, and then the second ophthalmic lens blank is lowered into contact with the hardenable liquid adhesive, wherein after the second ophthalmic lens blank has contacted the hardenable liquid adhesive, the second ophthalmic lens blank is elevated so that some second portion of the hardenable liquid adhesive remains on the second ophthalmic lens blank, some first portion of the hardenable liquid adhesive remains on the first ophthalmic lens blank and the second portion and the first portion are not in contact with each other.