Apparatus and method for edging a contact lens

Details Apparatus and method for edging a contact lens Apparatus and method for edging a contact lens

B - Operations, Transporting

24

B

B24B 9/14 (2006.01) B24D 9/00 (2006.01)

Patent

CA 2431733

Apparatus and method for edging an ophthalmic lens (12) comprises a spindle (14) on which a lens is removably positioned and set rotating to engage with a web of abrasive material (16) which is secured at only one end thereof. The free end of the web is allowed to dangle and is also preferably set into an oscillating, vertical movement which edges both the anterior (22b) and posterior (22c) surfaces of the lens (12) adjacent the lens periphery to thereby smooth the periphery of the lens.

L'invention porte sur un appareil et un proc~d~ de meulage du contour d'une lentille (12) ophtalmique. Cet appareil comprend une broche (14) sur laquelle est plac~e amovible une lentille et qui est mise en rotation de fa×on ~ venir en contact avec une bande de mat~riau (16) abrasif qui est fix~e ~ une seule extr~mit~ de celle-ci. L'extr~mit~ libre de la bande est autoris~e ~ rester ballante et est de pr~f~rence mise en mouvement oscillant, vertical qui meule le contour des surfaces ant~rieure (22b) et post~rieure (22c) de la lentille (12) pr­s de la p~riph~rie de celle-ci de fa×on ~ lisser cette p~riph~rie.

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