Ir-emitter heating device and method for demolding lenses

B - Operations – Transporting – 29 – D

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B29D 11/00 (2006.01) B29C 37/00 (2006.01) B29C 35/08 (2006.01)

Patent

CA 2443384

A method and a device for removing molded soft contact lenses, high-precision intraocular lenses and the like, from the individual molds (12 and 20) in which they are produced. Provided is an infra-red radiation or heater device (60) preferably constituted of silicon carbide IR-emitters, and which employs an individual infra-red emitter (60) for each individual mold (12 and 20), to impart a desired thermal gradient. Also provided are infra-red emitters having improved reflectors (78).

Cette invention concerne un procédé et un dispositif permettant d'enlever des lentilles de contact souples moulées, des lentilles intaocculaires à précision élevée et similaire, de moules individuels (12 et 20), dans lesquels on les a produits. Ladite invention concerne aussi un dispositif chauffant ou à rayonnements infrarouges (60) qui est constitué, de préférence, d'émetteurs de rayonnements infrarouges au carbure de silicium, et qui utilise un émetteur à rayonnements infrarouges unique (60) pour chaque moule individuel (12 et 20), de manière à allouer le gradient thermique souhaité. Cette invention a également trait à des émetteurs infrarouges pourvus des réflecteurs améliorés (78).

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