Apparatus and system for the production of plastic lenses

B - Operations – Transporting – 29 – D

Patent

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B29D 11/00 (2006.01) B29C 39/24 (2006.01) B29C 39/38 (2006.01) B29C 39/44 (2006.01) H05B 41/298 (2006.01)

Patent

CA 2404631

A lens forming apparatus for preparing a plastic eyeglass lens includes a first lens curing unit (810), a second lens curing unit (820) and a conveyor system (850) for moving mold assemblies between the two units. The apparatus may also include an anneal unit (830) configured to apply heat to a substantially polymerized lens. The apparatus may be used to form an eyeglass lens from a lens forming composition that may include an aromatic containing polyether polyethylenic functional monomer, a photoinitiator, and a coinitiator. The lens forming composition may be cured by the application of activating light or activating light and heat.

L'invention concerne un dispositif de formation de lentille servant à préparer une lentille de lunettes en plastique et comprenant une première unité de durcissement de lentille, une seconde unité de durcissement de lentille et un transporteur destiné à déplacer les ensembles de moulage entre ces deux unités. Ce dispositif peut également comprendre une unité de recuisson conçue pour appliquer de la chaleur à une lentille sensiblement polymérisée. Il peut servir à former une lentille de lunettes à partir d'une composition de formation de lentille pouvant comprendre un monomère fonctionnel polyéthylénique de polyéther contenant un composé aromatique, un photo-amorceur et un co-amorceur. La composition de formation de lentille peut être durcie par application de lumière d'activation ou par application de chaleur et de lumière d'activation.

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