B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
51/18, 342/42.3
B24B 13/06 (2006.01) G05B 19/418 (2006.01)
Patent
CA 2037853
A B S T R A C T "OPHTHALMIC LENS MANUFACTURE" In the manufacture of an ophthalmic lens according to a prescription P, a lens blank is ground to the desired dioptre surface and finished on a lens surfacing machine LSM. The prescription details of the lens are fed into a computer C which is programmed to determine the appropriate speed and time for lens surfacing after grinding, and produce on a printer PR a corresponding document or job sheet JS which combines visual information 1 for an operative as to the lapping die or lap to be selected and a "job" identifier 2 which provides computer identification of the particular job to which the prescription P and document JS relate. The identification of the job by the computer C results in computer control of the lens surfacing machine LSM in respect of lapping speed and time for the lens finishing operation.
Norville Optical Company Limited
Ridout & Maybee Llp
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