Method of minimal stress inducing ophthalmic lens blocking
AssigneeNCRx Optical Solutions, Inc.
InventorsJohn Traina, Jeremy Lehning, Edward L. McCall, William G. Moul, Jr.
Life of this patent
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Abstract
A method and associated implementing system eliminates much of the stress presently introduced by the bonding of ophthalmic lens blanks, or blanks to a holding device, namely a metal block. The method of attaching ophthalmic lens blanks to a blocking assembly comprises the steps of shaping a blocking assembly to take the shape of an ophthalmic lens blank surface of an ophthalmic lens, wherein the blocking assembly is not attached directly to the ophthalmic lens blank during shaping of the blocking assembly; and following the shaping of the blocking assembly, attaching the lens blank to the shaped blocking assembly.
Claims14
A method of attaching ophthalmic lens blanks to a blocking assembly comprises the steps of :
- shaping a blocking assembly to take the shape of an ophthalmic lens blank surface of an ophthalmic lens, wherein the blocking assembly is not attached directly to the ophthalmic lens blank during shaping of the blocking assembly;
- and
- following shaping the blocking assembly, attaching the lens blank to the shaped blocking assembly, wherein the blocking assembly includes a moldable blocking material within a flexible bladder, and
- wherein the moldable blocking material is solidified during the shaping of the blocking assembly to take the shape of an ophthalmic lens blank surface of an ophthalmic lens.
A method of attaching ophthalmic lens blanks to a blocking assembly comprises the steps of:
- shaping a blocking assembly to take the shape of an ophthalmic lens blank surface of an ophthalmic lens, wherein the blocking assembly is not attached directly to the ophthalmic lens blank during shaping of the blocking assembly, wherein the blocking assembly includes a moldable blocking material within a flexible bladder, wherein the moldable blocking material is solidified during the shaping of the blocking assembly to take the shape of an ophthalmic lens blank surface of an ophthalmic lens;
- and
- attaching the lens blank to the shaped blocking assembly.
Dependencies are inferred from the claim text.