B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 33/10 (2006.01) B29D 11/00 (2006.01)
Patent
CA 2677066
This invention includes methods and systems for forming an ophthalmic lens with a free form edge. In particular, the present invention provides a mold assembly (101, 102) including a vent portion (201) around a circumference of a lens forming portion (105). A precision dose of lens forming mixture (301) can be placed within the mold assembly to fill a lens forming portion (105) of the mold assembly. Atmospheric gas may escape through the vent portion (201) during lens assembly.
L'invention concerne des procédés et des systèmes pour former une lentille ophtalmique pourvue d'un bord de forme libre. L'invention concerne en particulier un ensemble moule (101, 102) comprenant une partie de mise à l'air libre (201) autour d'une circonférence d'une partie de formation de lentille (105). Une dose précise d'un mélange de formation de lentille (301) peut être placée dans l'ensemble moule pour remplir une partie de formation de lentille (105) de l'ensemble moule. Un gaz atmosphérique peut s'échapper à travers la partie de mise à l'air libre (201) pendant l'assemblage de la lentille.
Ansell Scott F.
Hofmann Gregory J.
Katterhenry David A.
Kindt-Larsen Ture
Rooney Thomas R.
Johnson & Johnson Vision Care Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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