METHOD OF MANUFACTURING A CONTACT LENS AND APPARATUS FOR USE IN THE METHOD

@ A contact lens is manufactured by a method involving machining a first face (2, 3) and a reference surface (4) on a blank (1); mounting the blank (1) in a work holder (10) adapted for accurate mounting on a lathe such that the blank (1) is held with its first face (2, 3) accurately positioned rela...

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Bibliographische Detailangaben
Hauptverfasser:	DENT, MICHAEL JOHN, HANDRICKS, IAN LISTER
Format:	Patent
Sprache:	eng
Schlagworte:	CONTACT LENSES DRESSING OR CONDITIONING OF ABRADING SURFACES FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GRINDING MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING OPTICS PERFORMING OPERATIONS PHYSICS POLISHING PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	@ A contact lens is manufactured by a method involving machining a first face (2, 3) and a reference surface (4) on a blank (1); mounting the blank (1) in a work holder (10) adapted for accurate mounting on a lathe such that the blank (1) is held with its first face (2, 3) accurately positioned relative to a datum point on the lathe; and machining a second face (8) on the blank (1). Such method avoids the need for skilled operatives and enables easy manufacture of accurately dimensioned contact lenses.