US Patent No. 10,336,022

MANUFACTURE OF OPHTHALMIC LENSES


Patent No. 10,336,022
Issue Date July 02, 2019
Title Manufacture Of Ophthalmic Lenses
Inventorship Robert Oag, Southampton (GB)
Gregg A. Dean
David M. Radcliffe, Southampton (GB)
Euan Ferguson, Southampton (GB)
Assignee CooperVision International Holding Company, LP, St. Michael (BB)

Claim of US Patent No. 10,336,022

1. A method of manufacturing an ophthalmic lens using a first mold portion and a puck assembly, said puck assembly comprising a carrier puck, wherein the puck assembly supports at least one of the first mold portion and the ophthalmic lens during at least two of the following ophthalmic lens manufacturing steps:a. assembling the first mold portion and a second mold portion into a mold assembly including a lens-defining cavity containing a lens precursor material;
b. curing the lens precursor material in the mold assembly to form a lens;
c. separating the mold assembly such that the lens remains attached to the first mold portion;
d. detaching the lens from the first mold portion;
e. extracting unwanted material from the lens;
f. hydrating the lens;
g. inspecting the lens;
h. packaging the lens; andcharacterised in that the carrier puck is arranged and configured to interface with a plurality of different step-specific puck elements and the method includes:i. providing a first step-specific puck element;
ii. combining the first step-specific puck element with the carrier puck and carrying out a first ophthalmic lens manufacturing step on the first mold portion and/or the lens carried by the carrier puck; and then
iii. providing a second step-specific puck element;
iv. combining the second step-specific puck element with the carrier puck and carrying out a second ophthalmic lens manufacturing step on the first mold portion and/or the lens carried by the carrier puck,wherein the puck assembly supports at least one of the first mold portion and the lens during the majority of the ophthalmic lens manufacturing steps a. to h.