Magnetorheological finishing of edges of optical e

专利名称：Magnetorheological finishing of edges of

optical elements

发明人：Stephen D. Jacobs,Igor V. Prokhorov申请号：US08/603528申请日：19960221公开号：US05616066A公开日：19970401

摘要：Method and apparatus using magnetorheological fluid for finishing a non-image-forming edge of an optical element to a very high degree of smoothness and forremoving microscopic fissures from such edges, the method comprising positioning anoptical element near a continuous carrier surface such that a converging gap is definedbetween an edge of the optical element and the carrier surface, the element beingdisposed such that image-forming refractive and reflective surfaces thereof do notcreate a gap with the carrier surface; applying a magnetic field substantially at the gap;introducing a magnetorheological fluid onto the carrier surface; driving the

magnetorheological fluid through the gap to cause a flow of magnetic field-stiffenedmagnetorheological fluid through this gap to create a work zone and to form a transientfinishing tool for removing material from the edge of the optical element; and movingthe optical element relative to the work zone to expose different portions of the edgeto the fluid for predetermined time periods to finish the edge to a predetermineddegree. The lateral extent of fluid may be broad enough to permit polishing of aplurality of optical elements simultaneously on a single carrier surface, or a plurality offinishing stations may be ganged to finish a plurality of optical elements on a plurality of

carrier surfaces.

申请人：THE UNIVERSITY OF ROCHESTER,BYELOCORP SCIENT INC

代理人：M. LuKacher

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