专利名称：Method and apparatus for masking
removable optical lens markings during lensgrinding
发明人：John R. Ohlin, Jr.申请号：US08/859288申请日：19970520公开号：US05792537A公开日：19980811
摘要：A method and apparatus for protecting removable markings on an optical lensduring grinding thereof to a desired prescription. A mask is placed over the markingsprior to application of an adhesive tape, to which a low temperature alloy block isbonded for holding of the lens during grinding. The mask preferably covers only themarkings, and is transparent to allow alignment thereof. Preferably the mask is held inplace on the lens surface without the use of an adhesive, although a low tack adhesivemay be used which does not remove the markings when the mask is peeled away fromthe lens. A preferred material for the mask is a static cling vinyl.
申请人：VENTURE TAPE CORP.
代理机构：Wolf, Greenfield & Sacks, P
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