EP 0566170 A1 19931020 - Method for manufacturing a bifocal contact lens and means to be used in this method.
Title (en)
Method for manufacturing a bifocal contact lens and means to be used in this method.
Title (de)
Verfahren zum Herstellen eines bifocale Kontaktlinse und Vorrichtung zur Anwendung desselben.
Title (fr)
Procédé pour la fabrication d'une lentille de contact bifocale et dispositif destiné à être mis en oeuvre dans ce procédé.
Publication
Application
Priority
NL 9200400 A 19920304
Abstract (en)
A contact lens comprising an optical zone shifted with respect to the axis of the contact lens, is manufactured in a first embodiment by cutting a lens basic part with the desired contact lens diameter centrically on a disc-shaped blank. The optical zone and the periphery are cut eccentrically in the lens basic part, for example by means of an auxiliary tool with a mounting part for mounting in a lathe and a receiving space for the blank mutually shifted along the desired distance, an eccentric collet or a tool mounted eccentrically with respect to the collect. In the second embodiment a lens basic part with the desired contact lens diameter is cut eccentrically on a blank. Subsequently the optical zone and the periphery are cut centrically with respect to the blank in the lens basic part. <IMAGE>
IPC 1-7
IPC 8 full level
B24B 13/00 (2006.01); B24B 13/005 (2006.01)
CPC (source: EP)
B24B 13/0012 (2013.01); B24B 13/005 (2013.01)
Citation (search report)
- [A] US 5074082 A 19911224 - CAPPELLI QUIDO A [US]
- [A] EP 0325673 A2 19890802 - KUNZLER WILHELM F
- [A] US 4202848 A 19800513 - NEEFE CHARLES W [US]
- [A] DE 3817334 A1 19891130 - HECHT GMBH KONTAKTLINSEN [DE]
- [A] US 4854089 A 19890808 - MORALES HERIBERTO [US]
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 93200527 A 19930224; NL 9200400 A 19920304