초록 ▼

A method for polishing an optical quality surface, such an ophthalmic lens, to finish which can accept a hardenable protective coating without using an abrasive slurry or gel, including the steps of: (a) providing an optical lens having a first major surface, the first major surface having an initia

A method for polishing an optical quality surface, such an ophthalmic lens, to finish which can accept a hardenable protective coating without using an abrasive slurry or gel, including the steps of: (a) providing an optical lens having a first major surface, the first major surface having an initial Rtm value of greater than 0.35 micrometers; (b) bringing the first major surface into a frictional contacting relationship with an abrasive article, wherein the abrasive article includes a sheet-like structure having deployed on at least one major surface thereof a plurality of individual abrasive composites, each composite having a plurality of abrasive particles dispersed in a binder; and (c) moving at least one of the contacting first major surface and abrasive article relative to each other with rotational and/or oscillatory movement in the presence of a liquid substantially free of abrasive particles in a manner and for a time effective to polish the first major surface to provide a final Rtm value in the first major surface of 0.30 micrometers or less.

대표청구항 ▼

A method for polishing an optical quality surface comprising the step of: providing an optical quality surface having a first major surface, said first major surface having an initial Rtm value of greater than 0.35 micrometers; bringing said first major surface into a frictional contacting relations

A method for polishing an optical quality surface comprising the step of: providing an optical quality surface having a first major surface, said first major surface having an initial Rtm value of greater than 0.35 micrometers; bringing said first major surface into a frictional contacting relationship with an abrasive article, wherein said abrasive article comprises a sheet-like structure having deployed on at least one major surface thereof a plurality of individual abrasive composites, each composite comprising a plurality of abrasive particles dispersed in a binder; and moving at least one of said contacting first major surface and abrasive article relative to each other in the presence of a liquid essentially free of abrasive particles in a manner and for a time effective to polish said first major surface to provide a finished surface having final Rtm value of 0.30 micrometers or less, the step of moving the first major surface and abrasive article relative to each other to erode the abrasive composites to bring a continuous supply of new abrasive particles in the abrasive composites into engagement with the first major surface; and removing essentially all abrasive particles eroded from the abrasive composites from an interface between the first major surface and the abrasive article so that polishing is substantially accomplished by the abrasive composites.