VERFAHREN UND VORRICHTUNG ZUR RANDBEARBEITUNG, INSBESONDERE WEICHER KONTAKTLINSEN

摘要

Soft contact lenses, made of polymers such as silicone rubber, are machined at their edges whilst being held and roughly centred; the lens is mounted adjustably on the machine tool and viewed through a microscope. The method dispenses with registering by eye and provides reproducible accurate machining at low cost.