B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
88/40
B29D 11/00 (2006.01) B24B 13/00 (2006.01) G02C 7/04 (2006.01)
Patent
CA 1106664
ABSTRACT OF THE DISCLOSURE A method for forming a plurality of optical surfaces on an optical lens precursor, desirably a "soft" contact lens button or blank, to yield a lens adapted for proximate or intimate contact with an eyeball and defined by at least one posterior surface, an edge and at least one interior surface, is comprised of forming a precision lens precursor, assembling the precursor in a microsurface generating apparatus, ultra-precisely forming the curves or geometry comprising the posterior surface and a portion of the edge to yield a semi-finished lens, blocking the semi-finished lens on an adhesively coated lens block fixture having an ultra-precisely preformed face for inti- mate precision mating with the posterior surface of the semi- finished lens, reassembling the semi-finished lens/fixture in the microsurface generating apparatus, ultra-precisely forming the curves or geometry comprising the anterior surface and another portion of the edge, and demounting a finished, ultra-precision lens from the blocking fixture. Also disclosed is a fluid-bearing automatic or semi- automatic machine for performing the instant method to ultra-precision, e.g., by computer control.
308556
Automated Optics Inc.
Osler Hoskin & Harcourt Llp
LandOfFree
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