Ophthalmic lens finishing by varnish spread through spin coating

The surface of an ophthalmic lens is polished by applying a layer of resin with a surface roughness 30-800 Ra : A process for finishing the surface of a prescribed ophthalmic lens by applying a surface layer of resin of thickness 30 to 800 Ra, where Ra = the arithmetical average surface roughness, t...

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Bibliographische Detailangaben
Hauptverfasser:	DANG, HOA THIEN, OLIVER, KIMBERLY DENISE, WHITE, SIDNEY SHAW, JR, TARDIEU, PASCALE, VALERI, ROBERT ALAN, ROBERT, ANNE, JOHNSON, ERIC GLEN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY CONTACT LENSES GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The surface of an ophthalmic lens is polished by applying a layer of resin with a surface roughness 30-800 Ra : A process for finishing the surface of a prescribed ophthalmic lens by applying a surface layer of resin of thickness 30 to 800 Ra, where Ra = the arithmetical average surface roughness, to confer a polished surface. An independent claim is included for equipment to provide the surface finish comprising a resin applicator, which comprises a support (1001) in which the lens can be place and rotated and an arm (1003) carrying a nozzle (1002) which provides resin at a low pressure and can be moved vertically and horizontally with respect to the support (1001).