NEUE BEARBEITUNGSTECHNIK FÜR RETROREFLEKTIVEN WÜRFELECKIGEN KÖRPER UND HERSTELLUNGSVERFAHREN DESSELBEN

摘要

A method of machining a substrate to produce a cube corner element optical array. The method includes steps of directly machining a plurality of groove sets into a directly machinable substrate to form an array having a plurality of geometric structures including cube corner elements, and machining at least two of the groove sets along the same path in the substrate but at different depths of groove to produce a geometric structure side surface having both an optical portion and a non-optical portion.