A METHOD OF MANUFACTURING A MOULD FOR PRODUCING AN OPTICAL SURFACE, A METHOD OF PRODUCING A CONTACT LENS AND A DEVICE FOR USE WITH THESE METHODS

A method of manufacturing a mould for producing a customized optical surface, whereby a mould ( 1, 2 ) having a base shape is modified in order to obtain the required shape of the mould. The modificaiton is carried out by means of a lithographic process comprising coating the mould surface with a ph...

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Bibliographische Detailangaben
Hauptverfasser:	VAN DOORMALEN, HENDRIKUS, G., P., C, VAN DER PUTTEN, THEODORUS, J., M, NELLISSEN, ANTONIUS, J., M
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPARATUS SPECIALLY ADAPTED THEREFOR CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY MATERIALS THEREFOR ORIGINALS THEREFOR PERFORMING OPERATIONS PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method of manufacturing a mould for producing a customized optical surface, whereby a mould ( 1, 2 ) having a base shape is modified in order to obtain the required shape of the mould. The modificaiton is carried out by means of a lithographic process comprising coating the mould surface with a photoresist layer ( 16 ), exposing the layer to a predetermined pattern of exposure radiation ( 9 ) and developing the exposed layer whereby portions of the layer are removed to obtain the required mould shape ( 22 ). This method may be used for producing small quantities of optical surfaces, such as for individual contact lenses.