44575 ⎘
Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made the contact between tool and workpiece being a line
Polishing method for optical elements
#2Polishing method for machining an optical surface of an optical lens and polishing tools suitable therefor
#3Method of manufacturing optical element having annular zones and method of manufacturing mold for forming the same