B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
B29D 11/00 (2006.01) B32B 17/00 (2006.01) G02B 3/00 (2006.01) G02B 3/10 (2006.01) G02C 7/04 (2006.01)
Patent
CA 2083084
ABSTRACT METHOD AND PACKAGING SYSTEM FOR FACILITATING FABRICATION OF LAMINATED LENSES Fabrication of an eyeglass lens to meet a specific ophthal- mic prescription is amplified by arranging back lens wafers or different sphere powers and cylinder corrections in order of the through sphere powers of the lenses that are produced by laminat- ing each back lens wafer with front lens wafers that have the same base curve. The front lens wafers of like segment style are grouped together and include sub-groups of wafers of similar base curve which are arranged in order of add power. Each lens wafer is maintained in an individual package prior to lamination and the back wafer packages display the through sphere powers that result from laminating the wafer with different ones of the front wafers. Reference to a conventional component selection chart is unnecessary as the correct back lens wafer can be directly located from the data on the presciption and the pack- age of the back lens wafer directs the technician to the correct front lens wafer. Verification that the correct lens wafers has been selected is provides for by a component of the front wafer package that obscures the display of through sphere powers on a back wafer package when the two packages are superimposed except for the particular through sphere power that is produced by lamination of the wafers from the two packages.
Howland Mary
Porden Mark
Smart & Biggar
Sola Group Ltd.
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